2017-01-18
Clio Batali
Clio Batali8:32 PM

@Clio Batali has joined the channel

Clio Batali
Clio Batali8:32 PM

@Clio Batali set the channel purpose: For discussing all bumper-related qualms and queries

Timo Lahtinen
Timo Lahtinen10:48 PM

@Timo Lahtinen has joined the channel

Alex Larson Freeman
Alex Larson Freeman10:48 PM

@Alex Larson Freeman has joined the channel

James Sovick
James Sovick10:48 PM

@James Sovick has joined the channel

Jeff Dalton
Jeff Dalton10:48 PM

@Jeff Dalton has joined the channel

Robert Galvin
Robert Galvin10:48 PM

@Robert Galvin has joined the channel

Harper Nalley
Harper Nalley10:48 PM

@Harper Nalley has joined the channel

Will Hobbs
Will Hobbs10:48 PM

@Will Hobbs has joined the channel

Jon Coonan
Jon Coonan10:48 PM

@Jon Coonan has joined the channel

Enrique Chee
Enrique Chee10:48 PM

@Enrique Chee has joined the channel

2017-01-20
Chris Mentzer
Chris Mentzer11:25 AM

@Chris Mentzer has joined the channel

Harper Nalley
Harper Nalley12:39 PM

I could find very little on bumpers with zippers, the best I found was that it SHOULD be possible.

Riyadth Al-Kazily
Riyadth Al-Kazily12:48 PM

@Riyadth Al-Kazily has joined the channel

James Sovick
James Sovick12:59 PM

Lots of people just use Velcro to strap flaps down. So we could do what we did last year but better and with Velcro instead of dual lock

Riyadth Al-Kazily
Riyadth Al-Kazily1:20 PM

Please remember to make "easily removable and re-attachable bumpers" a very high priority (if not the highest), because we won't be able to get the chassis through our school doorways with bumpers attached.

James Sovick
James Sovick4:04 PM

Thanks k you for the clarification riyadrh

Tom Wiggin
Tom Wiggin4:07 PM

@Tom Wiggin has joined the channel

Tom Wiggin
Tom Wiggin4:07 PM

how much glue to do we have?

Tom Wiggin
Tom Wiggin4:07 PM

and do we have any kind of force sensor?

Tom Wiggin
Tom Wiggin4:15 PM

@Tom Wiggin has left the channel

2017-01-21
Jack Chapman
Jack Chapman7:41 PM

@Jack Chapman has joined the channel

Harper Nalley
Harper Nalley8:12 PM

Force sensor? Why would he want that?

2017-01-22
Binnur Alkazily
Binnur Alkazily1:33 PM

@Binnur Alkazily has joined the channel

James Sovick
James Sovick5:29 PM

Here Robert is the link for the snap latches:
https://www.mcmaster.com/#catalog/119/2924/=lk7v9y

We need 12 snap latches with 12 10-32 bolts. Also here is the original post.

https://www.chiefdelphi.com/forums/showthread.php?t=148363

Enrique Chee
Enrique Chee5:48 PM

Did you guys check if we had 10-32 bolts ?

James Sovick
James Sovick6:00 PM

I Did not look to see if there was 10-32 bolts

Will Hobbs
Will Hobbs6:00 PM

What length do you need?

Will Hobbs
Will Hobbs6:00 PM

We have some 10-32 bolts

Enrique Chee
Enrique Chee6:02 PM

James, your link to the snap latches at McMaster is not clear. Please specific model , Quantity , price , etc

Enrique Chee
Enrique Chee6:02 PM

or did you do this with Robert via email ?

Enrique Chee
Enrique Chee6:03 PM

make sure your order enough for 2 sets of nbumpers.

James Sovick
James Sovick6:06 PM

Will, are 10-32 bolts longer then an inch because we just need them to be connected securely on the chassis.
Mr Chee, we have accounted for the 2 chassis and I will be more specific for Robert.

Will Hobbs
Will Hobbs6:06 PM

I believe we have a few 1 in bolts

Will Hobbs
Will Hobbs6:06 PM

But we have mostly 3/4 and 1/2 in bolts

Enrique Chee
Enrique Chee6:10 PM

James, Please share with me those parts ? and Go to McMaster website and place in cart and then share cart with me. If you can't figure this out, ask Lucas R. how to do this.

James Sovick
James Sovick6:10 PM

K I'm on it. Due you want the links through slack or email

Enrique Chee
Enrique Chee6:12 PM

email please, Check my email I will forward you Lucas's example from Mcmaster. As always please include RObert so he can keep track of ouri nventory. Thanks

Enrique Chee
Enrique Chee7:27 PM

BTW, great idea on the latches !!! Good job on researching in CD.

James Sovick
James Sovick8:41 PM

AM14U3 Front Mount Bumper Bracket (am-3469)

James Sovick
James Sovick8:42 PM

sorry that was an accident

Enrique Chee
Enrique Chee8:44 PM

Lucas, is the above a request ??

Harper Nalley
Harper Nalley8:44 PM

Yes

James Sovick
James Sovick8:45 PM

Lucas. write an email to chee with the list of brackets and items

Harper Nalley
Harper Nalley8:45 PM

Those are the corners

Harper Nalley
Harper Nalley8:45 PM

Okay

James Sovick
James Sovick8:45 PM

also cc robert

Will Hobbs
Will Hobbs8:46 PM

Give specific links not just a part name or number

Enrique Chee
Enrique Chee8:50 PM

Thanks James. You teach does rookie how to do it.

Enrique Chee
Enrique Chee8:51 PM

Will, you tell him.

Enrique Chee
Enrique Chee8:53 PM

So please finalize all bumper braket orders from AM.

Enrique Chee
Enrique Chee8:54 PM

10-32 bolts, don't you nuts ?

Enrique Chee
Enrique Chee8:54 PM

need

Will Hobbs
Will Hobbs8:54 PM

We have nuts

Will Hobbs
Will Hobbs8:54 PM

For 10-32

James Sovick
James Sovick8:54 PM

It's the size we needed.

Enrique Chee
Enrique Chee8:57 PM

Are the 10-32 bolts correct length ? I am assuming bolts go through slide-snap and bumper brackets ? or brackets and chassis ?

Enrique Chee
Enrique Chee8:58 PM

Will, see my email. I just forward the specs that James send me from Mcmaster request.

Enrique Chee
Enrique Chee9:02 PM

Will, are the 10-32 nuts lock-tight ?

Will Hobbs
Will Hobbs9:03 PM

The 10-32 nuts are lock nuts

Will Hobbs
Will Hobbs9:03 PM

I think we also have some non lock nuts

Will Hobbs
Will Hobbs9:04 PM

@James Sovick: according to the link you need m3 bolts

Will Hobbs
Will Hobbs9:04 PM

Please double check

Will Hobbs
Will Hobbs9:04 PM

If that is correct you will need to order m3 bolts and nuts

Enrique Chee
Enrique Chee9:05 PM

whobbs1496 where are you seeing M3 ?

Will Hobbs
Will Hobbs9:07 PM

Mounting screw is labeled as m3

Enrique Chee
Enrique Chee9:10 PM

Again where are these mounting screws for ? I am assuming bolts go through slide-snap and bumper brackets ? or brackets and chassis ? not clear. I don't see the link of slide snap in Mcmaster to M# bolts ?

Harper Nalley
Harper Nalley9:11 PM

I got the email sent

Enrique Chee
Enrique Chee9:12 PM

Thanks

James Sovick
James Sovick9:23 PM

To secure overlapping components, engage the slide and the
mating stud until they snap together. That is from their catalog. The bolt would go through the mating stud then and you could secure it with a nut

James Sovick
James Sovick9:25 PM

The bottom part is what the catalog states

Enrique Chee
Enrique Chee9:26 PM

so what is it M3 or 10-32 ?

James Sovick
James Sovick9:37 PM

Looking into it

James Sovick
James Sovick9:41 PM

Looks like M3 because of the point will brought up. The 10-32 came from the Chief Delphi post with latch design.

Enrique Chee
Enrique Chee9:52 PM

So if M3 , need lenght ? quantity, nuts ? Lets start from the beginning.

Enrique Chee
Enrique Chee9:52 PM

lenght

Enrique Chee
Enrique Chee9:52 PM

length

James Sovick
James Sovick9:53 PM

1 1/2 inch

Enrique Chee
Enrique Chee9:54 PM

nuts ? Quantity , Mcmaster ? Please go back to Mcmaster and send me the order .

Enrique Chee
Enrique Chee9:54 PM

Thanks

James Sovick
James Sovick10:14 PM

Mr chee I meant 2 boxes of nuts not 1

Enrique Chee
Enrique Chee10:16 PM

@Will Hobbs Thanks for catching the bolts as M3 and not 10-32, but it might have worked.

2017-01-23
Jeff Dalton
Jeff Dalton10:52 AM

The best I can gather from the spec regarding the space we need on the frame or each latch would be: 1.75in (latch), 5/8in. (latch open), ~1in finger space to push latch closed. Question: How much bracket material do we need between the mounting hole and the edge of the bracket such that we don't weaken the bracket (e.g., how close to the edge of the bracket can we drill a mounting hole)? With the info we have, I'd estimate .5 in. on the non sliding end of the latch for bracket and installation clearance. So that gives us 3 7/8in.(say 4in.) needed per latch. James, what size did you use for your sample cardboard spacers?

Jeff Dalton
Jeff Dalton11:24 AM

I'm just posting as a reminder of things to do on Friday. I'm not expecting responses from anyone. On the chassis side, will mounting the pin into the outside chassis frame (i.e., framing member outside of the wheels) provide sufficient strength or will we need to span chassis framing members (inside and outside of the wheels)? Looking at the slideLatch.JPG picture (Unlatched side), our mounting plate for the pin (chassis frame), would be just slightly wider than the pin.

Harper Nalley
Harper Nalley12:06 PM

The cardboard was cut to roughly 1.75x11/16x.5 inches

Harper Nalley
Harper Nalley12:11 PM

So, pretty big if you think about it.

Enrique Chee
Enrique Chee12:36 PM

Make sue your hardware does not extend outside the chassis frame perimeter. There is a certain limit equal to a bolt head that is allow . The specific dimension is in the rules.

Harper Nalley
Harper Nalley1:02 PM

It fits, the latches are going on top of the main frame.

2017-01-24
Enrique Chee
Enrique Chee4:04 PM

Jim Carr
Jim Carr4:52 PM

@Jim Carr has joined the channel

2017-01-26
Harper Nalley
Harper Nalley12:42 PM

Kenneth just put this on the Strategy group

James Sovick
James Sovick11:01 PM

The sewing machine I have is a bit old but is having some troubles. My mom will be trying to fix it. So as a back up does anyone have a sewing machine

2017-01-27
Harper Nalley
Harper Nalley7:15 AM

I'll ask my dad if his is working.

Riyadth Al-Kazily
Riyadth Al-Kazily10:18 AM

We have a sewing machine if needed. Let me know if you'd like me to bring it to school.

James Sovick
James Sovick12:30 PM

Riyadth can you bring the sewing machine please

Riyadth Al-Kazily
Riyadth Al-Kazily12:59 PM

I will bring it. I will be there between 2 and 3pm, unless you need it sooner (I can drop it off)

James Sovick
James Sovick1:16 PM

That's fine thx

2017-01-30
Kaedric Holt
Kaedric Holt12:23 PM

@Kaedric Holt has joined the channel

Kaedric Holt
Kaedric Holt4:50 PM

How far off the ground are the bumpers?

Kaedric Holt
Kaedric Holt4:57 PM

I need this pronto for the CAD. @James Sovick

James Sovick
James Sovick4:57 PM

3/4

James Sovick
James Sovick4:57 PM

Inch

Kaedric Holt
Kaedric Holt4:58 PM

K, thx

Kaedric Holt
Kaedric Holt5:35 PM

Will it work with only two brackets? As far as I can tell, the dimensions don't account for screw-heads securing the frame to the chassis.

James Sovick
James Sovick5:37 PM

What screw heads

Kaedric Holt
Kaedric Holt5:37 PM

Connecting the brackets to the wooden frame

James Sovick
James Sovick5:38 PM

All screen heads are on the outside of the frame

Kaedric Holt
Kaedric Holt5:38 PM

There will be a nut on the inside?

James Sovick
James Sovick5:39 PM

Are you talking about mounting?

Kaedric Holt
Kaedric Holt5:40 PM

I'm talking about the connection between the wooden frame for the bumpers, and the bracket that has the slide bracket on it

James Sovick
James Sovick5:40 PM

Ah ok

Kaedric Holt
Kaedric Holt5:40 PM

Will those be wood screws from the inside

James Sovick
James Sovick5:41 PM

Yes

James Sovick
James Sovick5:42 PM

We have 3 brackets on each bumper half. Six in total on the 2 half's of the bumper

Kaedric Holt
Kaedric Holt5:43 PM

Yes, but on the measurement from front to back, I don't think it accounts for the screwheads in between the bottom of the bracket and the chassis

James Sovick
James Sovick5:44 PM

It's OK the bolt heads are really small and will not add anything. I tried won't make a minor diffrence

Kaedric Holt
Kaedric Holt5:44 PM

K, thx

Kaedric Holt
Kaedric Holt5:59 PM

What is the gap between the two pieces on the back?

Riyadth Al-Kazily
Riyadth Al-Kazily6:06 PM

@James Sovick: I recommend drawing a quick sketch and sending a photo of it

Jeff Dalton
Jeff Dalton9:02 PM

The back gap should be between 0 and .25 inch. There are a number of factors which contribute to the back gap, but it will mostly be determined by the layers of fabric over squishy noodles. The bracket and screw heads mentioned above can also influence it. We'd like the plywood of the two halves to come close (<.25inch), but not touch. The gap will be filled with squishy noodle beyond the ends of the plywood such that the two halves will touch. Here's a quick sketch, top view looking down at the back.

Jeff Dalton
Jeff Dalton9:04 PM

2017-01-31
Harper Nalley
Harper Nalley12:53 PM

Just FYI; on Thursday I will be arriving about 20-30mins after the meeting starts.

James Sovick
James Sovick1:05 PM

K

2017-02-03
Jeff Dalton
Jeff Dalton8:23 AM

Let's remember to weigh the bumpers on Sunday... just to make sure. Each section needs to be under 10 lbs. It is sufficient to weigh just one unless it is really close to 10 lbs., in which case, we should weigh the set to confirm each set is under 20 lbs. Also, if it is close, be sure to include the fabric and brackets.

Harper Nalley
Harper Nalley12:02 PM

Okay, good point

2017-02-05
Jeff Dalton
Jeff Dalton6:41 PM

Ok, here we go. For those not familiar with the problem we are trying to solve, I'll restate it. I has become clear that we can't mount our brackets on the top back of the chassis near the center as pictured up above with my fine sketch. So the plan I'm putting forward is to move the top brackets (with slide latch) to the top back corners of the chassis. The rest of this discussion will be focused on how to secure the two sections of bumper where they come together in the center of the back chassis. I'll provide a sketch as above and some pictures of a cardboard prototype (I couldn't care less about the Falcons and Patriots).

Jeff Dalton
Jeff Dalton7:04 PM

The slide latch brackets are moved out to the corner, a T bracket is only fastened to one bumper section. That bumper needs to be first off, last on. The T has a draw tight latch hook on end (yellow). It is inserted thru a new hole in the chassis wall. An L bracket is added to the inside of the chassis wall, the draw tight part of the latch is attached to that L bracket.

Jeff Dalton
Jeff Dalton7:07 PM

This is the inside of the back chassis wall with L bracket and Draw Tight latch attached to L bracket. It would be accessed from under the chassis.

Jeff Dalton
Jeff Dalton7:09 PM

This is the hole cut into the back chassis. It is also somewhat visible at the corner of the L bracket in the previous photo.

Jeff Dalton
Jeff Dalton7:12 PM

This is the center line where the two bumper sections come together. The brown is the plywood, blue is a metal flat bar attached only to one side of plywood.

Jeff Dalton
Jeff Dalton7:13 PM

This is the latch hook attached to an L bracket.

Jeff Dalton
Jeff Dalton7:16 PM

This is the L bracket w/ hook inserted thru the chassis hole.

Jeff Dalton
Jeff Dalton7:19 PM

This is the latch in the closed position pulling the L bracket in tightly; consequently, pulling the two ends of plywood tightly against the chassis frame. The L bracket inserted in the chassis hole will also help with vertical and horizontal movement of the bumpers.

Jeff Dalton
Jeff Dalton7:31 PM

Analysis? GOOD: We have or can easily make brackets. The latch is a $5 part from Ace. Provides lots of support for the bumpers. Avoids the top of the chassis which will be in high demand. Is quickly and easily manipulated without needing to see what you are doing. Pulls bumpers tight to the frame. BAD/UNKNOWN: Is anyone else going to demand this space on the inside wall of the chassis? L bracket with hook cannot be attached to plywood, must be inserted after bumpers. Might get complicated and needs to be secured to the robot (chain, zip tie, etc.) so if it comes undone, it doesn't draw a penalty. Will latch open with contact with field elements/robots?

Jeff Dalton
Jeff Dalton7:46 PM

Another option for the latch is to use a pin with a big washer on the end and the same slide latch as elsewhere on the inside of the frame. GOOD: easier, smaller chassis hole. Consistent latch mechanism w/ the rest of bumper latches. Less parts. BAD: more difficult to reach latch, doesn't pull bumpers as tight to frame, need to order more slide latches.

Jeff Dalton
Jeff Dalton7:58 PM

An option that we should check out is to mount slide latches on the bottom of the chassis frame only for the latches at the center back. Since all other 3 latches are close to the chassis side, it might be possible to lift up on the bumper sides (to clear those latches) while rotating the center back down (to clear a bottom latch). This would be easiest to build, but might not work. Cart builders would need to know about this and we'd need to verify it can be easily manipulated while on the ground (i.e., is there enough room to rotate the center back down without the bumper hitting the floor?).

Harper Nalley
Harper Nalley8:13 PM

That's what I was just thinking; it should work

Enrique Chee
Enrique Chee8:30 PM

Thanks Jeff !

2017-02-10
Jeff Dalton
Jeff Dalton10:45 AM

Recessing the mounting brackets is problematic. It will move the slide latch off the desired mounting location on the chassis. We should investigate only recessing the screw attachment part of the bracket and not the corner/top. Ie., bending the bracket on the side that attaches to the bumper.

2017-02-12
James Sovick
James Sovick11:14 AM

Going to b a bit late. Be there around 11:25

James Sovick
James Sovick4:55 PM

To do list:
1. Finishing drilling holes
2.back brackets (install the bottom back bracket and drill hole in chassis for the latches)
3. Anything I missed

Harper Nalley
Harper Nalley5:18 PM

3) system checks
4) blue brackets

James Sovick
James Sovick5:21 PM

Were all clear to show up at 1:30 tomorrow. Lucas, Robert and James are clear to go

Harper Nalley
Harper Nalley5:32 PM

HIja'!

James Sovick
James Sovick5:33 PM

Yeah

Harper Nalley
Harper Nalley5:33 PM

maj

2017-02-13
Harper Nalley
Harper Nalley2:51 PM

2017-02-15
James Sovick
James Sovick9:39 PM

So should we do the extra meeting

Enrique Chee
Enrique Chee10:47 PM

Up to you.

2017-02-16
Harper Nalley
Harper Nalley8:31 AM

What do we have left to do on the Blues? Is it just the back brackets?

Harper Nalley
Harper Nalley8:32 AM

I mean, what do we have to do that doesn't require access to the robot?

James Sovick
James Sovick8:33 AM

Well maybe because we still need to look and see if everything fits

Harper Nalley
Harper Nalley8:35 AM

So that requires the robot but will mounting the BBs also require it.

Harper Nalley
Harper Nalley8:35 AM

?

James Sovick
James Sovick8:36 AM

No just the side because we still don't now if they fit on.

Harper Nalley
Harper Nalley8:36 AM

Okay.

James Sovick
James Sovick8:36 AM

But yeah. For the most point we don't need the chassis

Harper Nalley
Harper Nalley8:36 AM

So should we go in Sun?

James Sovick
James Sovick8:36 AM

I don't think we need to

Enrique Chee
Enrique Chee8:40 AM

Yes, Sun is a require meeting for all .

Jeff Dalton
Jeff Dalton8:45 AM

The bumpers are supposed to go on & off quickly. Consequently, even since we are not allocated chassis time, that doesn't mean we can't attempt fittings. A fitting test should be under 30 seconds. To me, it seems reasonable to assume we can find opportunities for this on Sunday.

James Sovick
James Sovick8:46 AM

K

Jeff Dalton
Jeff Dalton8:48 AM

A task that can be done without the chassis is to secure the fabric folds on the intake end of the bumpers. We don't want engagement/disengagement with other robots to pull out the folds.

James Sovick
James Sovick8:48 AM

:+1:

Harper Nalley
Harper Nalley8:54 AM

I meant Saturday

James Sovick
James Sovick8:55 AM

Sent u supposed to be in class?

James Sovick
James Sovick8:55 AM

Arnt

Jeff Dalton
Jeff Dalton9:14 AM

Another task could be to add basic bumpers to the 2nd chassis. Something quick that keeps our team safe. Perhaps a U shape like the real ones but with back side only as long as the front. We can let the front and back hang (no attachment) and the side will be attached with two bumper chassis kit brackets (we have 4 brackets). I think it would be good to have experience with these brackets that are custom made for the robot chassis kit that we've used this year. That experience will benefit us next year with regard to what it would take to secure the kit brackets for competition. These brackets are quick on/off so the bumpers can be removed faster than the real ones. Just an idea... I'm might be paranoid, but I think if the robot can drive, we'll drive it, and it should be safe. We can have creative fun with the fabric. I've seen a girl's competition swim suit in the lab. That would make for some wild bumpers if it can be used. Does it belong to @Adrianna Carter or @Rose Bandrowski?

Riyadth Al-Kazily
Riyadth Al-Kazily9:24 AM

Another point of view in support of the second robot having bumpers: As autonomous code is tested, we need to align the chassis against walls, etc. If we make modifications with a bumperless test robot, we may be off by a few inches when we use the actual robot in competition. So bumpers (at least of similar dimension) would be a great benefit to the programming team. (And may help keep them a bit safer...)

Harper Nalley
Harper Nalley9:42 AM

Would it be possible to put some latches on the backup? We would only need two or three per side because it wouldn't be in a competition.

Riyadth Al-Kazily
Riyadth Al-Kazily9:46 AM

We would need some way of taking bumpers off the backup, as it still needs to fit through doorways...

James Sovick
James Sovick10:01 AM

We would just have to talk with Chee to see if we could use the pool noodles and latches

James Sovick
James Sovick10:02 AM

Also would it be a good idea to make back up brackets?

Enrique Chee
Enrique Chee3:34 PM

Yes on backup brackets for competition . Temp. bumpers for second robot is good idea for programmers . Maybe take Aries bumpers and modify . This needs to be done ASAP for programmers if you decide to do it . You can angle the robot with bumpers to fit through door . I guess you guys should up sat if possible .

Harper Nalley
Harper Nalley4:31 PM

What about using the blue bumpers?

Enrique Chee
Enrique Chee6:34 PM

That is an option .

2017-02-18
Jeff Dalton
Jeff Dalton11:42 AM

I've made other plans for today (Sat.) since bumpers on the 2nd chassis have been consistently rejected even though I believe that IF it can drive, we will be driving it. I believe it should have bumpers for safety. Friday it was driving in autonomous right behind people paying attention to the other robot. I watched as it clipped the corner of the building a couple of times. That's my morning rant... moving on.... My suggestion for backup chassis bumpers is as I said above. I believe that will be fastest. Use the bumper kit brackets, only attach to the side of the chassis, no chassis down time, no latches(!). In the tray of bumper parts on the sponsor wall shelf, I put a bumper bracket with a quick wire lock. This method will be good enough for non-competition. The only difficult part will be that the bracket mounting locations will need to line-up with the existing holes on the top of the chassis. Also the brackets need to match up to the chassis at a location where there are no bolts/axles protruding out the side. I can build these on Sunday AM. Let me know if that is desired and I'll come in early with programmers.

Jeff Dalton
Jeff Dalton11:49 AM

Wood: 28.5"x5.5" x2, 6"x5.5" x4; Corner brackets: use pkg from Ace in tray, they'll be mounted sufficiently above and below the chassis so the rounded inside corner will not be in the way. Noodles: Use the junkiest ones we have. Fabric: Ask the hopper folks if they're done with that blue stuff they're using. Duct take noodles, don't waist time heating/gluing. Don't miter noodles, just run one side of corner long.

James Sovick
James Sovick1:14 PM

Captians say no because it's not worth it.also due to time and need for other things. No need to come in at 9:00.

2017-02-19
Jeff Dalton
Jeff Dalton8:37 AM

Anything happening with bumpers today (fitting blue, adjusting red)?

Will Hobbs
Will Hobbs8:38 AM

You will have a few minutes at the start of the meeting to take off the red bumpers so you can match the blue bumpers to the red

Will Hobbs
Will Hobbs8:39 AM

The red numbers are fitting great

Will Hobbs
Will Hobbs8:39 AM

But the brackets on the blue bumpers do not line up with your mounting points on the robot

Harper Nalley
Harper Nalley8:40 AM

We do have to open up the hole for one of the rear bottom brackets a bit more.

Jeff Dalton
Jeff Dalton8:42 AM

On Friday, red looked close to ground on the front port corner. Is anyone concerned?

Jeff Dalton
Jeff Dalton8:52 AM

Whoever is driving robot today, it would be nice if they can try and drive over a yellow gear. Bumpers are low to prevent that but if it isn't prevented because of the squishiness of the noodles, we might consider raising them to reduce risk of disqualification (?) due to bumpers touching ground.

Jeff Dalton
Jeff Dalton8:54 AM

Calendar say mtg starts at 1. Is that still the case or was it moved up?

James Sovick
James Sovick8:56 AM

Looks like the red bumper that's sagging is just fabric

James Sovick
James Sovick8:56 AM

I'd still want to make sure though

Clio Batali
Clio Batali8:57 AM

@Jeff Dalton: The regular meeting still starts at 1, but many mechanics (including bumpers) are meeting earlier at 9am to get a head start

Clio Batali
Clio Batali8:58 AM

Also, good point about the gear. We'll be sure to test that today with the programmers

Harper Nalley
Harper Nalley9:03 AM

Due to car trouble I am going to be 5 mins late

Harper Nalley
Harper Nalley9:04 AM

Okay, maybe more like seven

Jeff Dalton
Jeff Dalton3:30 PM

Here's what I know needs to be completed: (1) two brackets put on a blue bumper, (2) hole filed bigger as marked on bottom of chassis, (3) sew (?) intake folds down. Anything else?

James Sovick
James Sovick4:27 PM

That looks like it all

Binnur Alkazily
Binnur Alkazily10:00 PM

@Jeff Dalton @Clio Batali drove over the gears - everything looked fine, nothing exciting to report — other than our teleop code not working initially… :confused:

Riyadth Al-Kazily
Riyadth Al-Kazily10:51 PM

(She means "attempted to drive over the gears, but was unsuccessful in doing so")

2017-02-20
Harper Nalley
Harper Nalley5:02 PM

@Jeff Dalton we are planning on building a full set of backup brackets, should we get them tomorrow?

Jeff Dalton
Jeff Dalton5:08 PM

Sure. If Robert (QM) directs me to pick them up, I'll get 8 (or whatever Robert wants) from ProBuild. If someone else wants to do it, let me know and point them to the location. What time are people showing up? Calendar says 1PM.

Harper Nalley
Harper Nalley5:10 PM

Okay, thank you.

James Sovick
James Sovick5:10 PM

Thank you so much Jeff!!:grinning:

James Sovick
James Sovick10:03 PM

They said they would push the date out tonight

James Sovick
James Sovick10:03 PM

The time* sorry

Harper Nalley
Harper Nalley10:23 PM

It's 10:00-18:00

Will Hobbs
Will Hobbs11:57 PM

1 pm tommorow is the meeting

Will Hobbs
Will Hobbs11:58 PM

One of your brackets on the left blue bumper is not aligned properly. Please fix it tommorow

2017-02-21
Harper Nalley
Harper Nalley12:16 AM

Okay

Harper Nalley
Harper Nalley10:35 AM

Are we meeting at 1:00?

Harper Nalley
Harper Nalley10:38 AM

Oh, wait, nevermind

James Sovick
James Sovick10:40 AM

:stuckouttonguewinkingeye:

Jeff Dalton
Jeff Dalton1:05 PM

I'm running about 45 min late w/ brackets.

2017-02-24
Harper Nalley
Harper Nalley9:57 PM

Looks like we didn't have to spend so long on our bumpers :)

2017-02-26
James Sovick
James Sovick8:51 PM

We will see what other teams did. Idk if those are legal and if there just test bumbers

2017-02-27
Harper Nalley
Harper Nalley10:03 AM

I don't think that was legal.

Binnur Alkazily
Binnur Alkazily10:13 PM

team, thank you for not embarrassing us with our bumper :slightlysmilingface: I am loving what you guys have built this year!! Much appreciation!!

2017-02-28
Alex Larson Freeman
Alex Larson Freeman4:30 PM

Can you guys come back real quick? @Harper Nalley @James Sovick

2017-03-01
Harper Nalley
Harper Nalley3:57 PM

So, because of the fabric, we need to put those corner brackets on the inside of the wood. Do we want to countersink the screw holes?

Harper Nalley
Harper Nalley3:57 PM

Or bring the countersink.

Harper Nalley
Harper Nalley5:51 PM

That is, if we put those extra corner brackets on

Jeff Dalton
Jeff Dalton6:16 PM

Can someone please summarize the issue with bumpers?

Harper Nalley
Harper Nalley6:23 PM

Those backup corner brackets, if we need to use them, we'll need to countersink the holes because they would have to go on the robot side right?

Jeff Dalton
Jeff Dalton6:30 PM

Harper Nalley
Harper Nalley6:31 PM

Yes

Harper Nalley
Harper Nalley6:31 PM

Affirmative

Jeff Dalton
Jeff Dalton6:36 PM

I seem to remember having the opinion that they needed to go on the inside, but I can't remember why. Would the existing corner brackets get in the way of mounting these? If so, then they'd need to be removed. The fabric would need to be moved back past the corner. What other considerations are there? What is the problem that this would address? Is it that the screw heads are two tight against the frame on the existing corner brackets?

2017-03-05
Harper Nalley
Harper Nalley6:45 PM

Bumpers!!!!

Harper Nalley
Harper Nalley6:45 PM

They live!

Clio Batali
Clio Batali6:49 PM

We got another rip in the red bumpers. Currently it's taped with gaffer's tape. Please keep that in mind, and sew up at some point

Harper Nalley
Harper Nalley6:50 PM

Rats

Harper Nalley
Harper Nalley6:50 PM

Okay

Clio Batali
Clio Batali6:50 PM

Also, sweet bumpers!

Harper Nalley
Harper Nalley6:50 PM

Thanks.

2017-03-19
Harper Nalley
Harper Nalley2:33 PM

Harper Nalley
Harper Nalley2:45 PM

Harper Nalley
Harper Nalley2:45 PM

They might be these.

Harper Nalley
Harper Nalley3:56 PM

Robert and I thought more about what if the corner brackets broke, so we widened some holes in the backup outside corners and found some inside brackets.

Harper Nalley
Harper Nalley3:56 PM

And we thought about what we could do for the corners next year.

Harper Nalley
Harper Nalley3:57 PM

And finally we taped some bits of the fabric to prevent fraying.

James Sovick
James Sovick4:31 PM

Cool.

2017-03-21
Harper Nalley
Harper Nalley6:01 PM

Anything new to report with the bumpers?

James Sovick
James Sovick6:26 PM

Nah fan

James Sovick
James Sovick6:26 PM

Fsm

James Sovick
James Sovick6:26 PM

Fam

Harper Nalley
Harper Nalley10:21 PM

Okay. My mother has a spare sewing kit that I can bring and leave in engineering.

Enrique Chee
Enrique Chee10:23 PM

Great. Thanks

2017-03-25
Harper Nalley
Harper Nalley10:03 PM

Our new Spartronics sewing kit.

2017-03-26
James Sovick
James Sovick9:34 PM

Yay

2017-03-29
Harper Nalley
Harper Nalley7:48 AM

Are ether of you two going to worlds?

2017-04-01
Harper Nalley
Harper Nalley12:57 PM

I think after Cheney we will see if we should use some heavier thread for repairs

James Sovick
James Sovick1:12 PM

What do you mean heavier threads?

Harper Nalley
Harper Nalley2:56 PM

Thicker

2017-04-08
Harper Nalley
Harper Nalley7:58 PM

I think tomorrow (09/4) we (bumper team) should stitch up the fabric, and drill in some new holes.

Samantha Rosen
Samantha Rosen7:58 PM

@Samantha Rosen has joined the channel

Bo Baird
Bo Baird7:58 PM

@Bo Baird has joined the channel

Enrique Chee
Enrique Chee11:53 PM

Please do if you think it is needed.

2017-04-10
Cruz Strom
Cruz Strom12:54 PM

@Cruz Strom has joined the channel

2017-04-20
Harper Nalley
Harper Nalley3:08 PM

To anyone at worlds:
How are the bumpers holding up?

Will Hobbs
Will Hobbs3:09 PM

Holding up fine

Harper Nalley
Harper Nalley6:23 PM

Fine as in good fine? Or fine as in overall good, but there are a few new problems?

Will Hobbs
Will Hobbs6:24 PM

No issues. They are working great

Harper Nalley
Harper Nalley6:24 PM

Cöol

2017-04-21
Bo Baird
Bo Baird3:59 AM

Y'all done did good broyahz!!

2017-04-23
James Sovick
James Sovick9:32 AM

Thx bo

2017-09-07
Harper Nalley
Harper Nalley1:35 PM

So, James and Robert. Next weekend I am going to cut out the wood for the bumpers. Based on my research, the 5" height and 3/4" thickness we used last year are the standard. And then cutting the wood to 55" should give us more than enough wiggle room.

2017-09-08
Harper Nalley
Harper Nalley1:03 PM

Just in case the 2018 game IS a water game, we should think about finding new thing to replace the wood backing. I will still cut out the wood if they were joking about buoyancy.

Harper Nalley
Harper Nalley1:59 PM

I did some preliminary research, and we could use something similar to what 5803 and I think what 2471 uses. It's a honey comb aluminium piece.

2017-10-16
Darwin Clark
Darwin Clark12:49 PM

@Darwin Clark has joined the channel

2017-10-26
victoria kleiven
victoria kleiven5:58 PM

@victoria kleiven has joined the channel

2017-11-19
Peter Hall
Peter Hall12:13 PM

@Peter Hall has joined the channel

2017-11-29
Jules Blythe
Jules Blythe7:18 PM

@Jules Blythe has joined the channel

2018-01-15
Harrison
Harrison1:57 PM

@Harrison has joined the channel

Mark Tarlton
Mark Tarlton5:43 PM

@Mark Tarlton has joined the channel

2018-01-16
Violet Advani
Violet Advani11:39 AM

@Violet Advani has joined the channel

2018-01-17
Nora Wilson
Nora Wilson10:21 PM

@Nora Wilson has joined the channel

2018-01-18
Rose Bandrowski
Rose Bandrowski8:58 PM

@Rose Bandrowski has joined the channel

2018-01-20
Harper Nalley
Harper Nalley12:47 PM

Harper Nalley
Harper Nalley12:47 PM

I just got the bumpers cut, so we can start drilling tomorrow.

Enrique Chee
Enrique Chee1:46 PM

I guess we had enough wood ?

Harper Nalley
Harper Nalley2:03 PM

Affirmative

2018-01-28
Harper Nalley
Harper Nalley5:49 PM

@Nora Wilson @Harrison Bumpers should be done by Saturday February 10th. We should be getting a fourth person so we will be able to work on both sets (the red set and the blue set) at the same time interval.

Harrison
Harrison5:50 PM

Ok then who is that second person

Harper Nalley
Harper Nalley5:50 PM

Probably Jules

Nora Wilson
Nora Wilson5:51 PM

Okay.

Harper Nalley
Harper Nalley9:40 PM

Harper Nalley
Harper Nalley9:40 PM

Harper Nalley
Harper Nalley9:40 PM

Harper Nalley
Harper Nalley9:41 PM

@Kenneth Wiersema These are the CAD files for the bumpers, they don't have brackets or anything, it's just the wood and the fabric.

2018-02-01
Kenneth Wiersema
Kenneth Wiersema7:19 PM

@Kenneth Wiersema has joined the channel

Harper Nalley
Harper Nalley9:16 PM

@Nora Wilson @Harrison Remember to spend some time tonight and/or tomorrow learning how to sew on a sewing machine.

Nora Wilson
Nora Wilson9:17 PM

Wilco

2018-02-02
Nora Wilson
Nora Wilson8:05 AM

What model sewing machine do we have, out of curiosity? The one I have is a tad archaic, and may not be suitable for practice.

Harper Nalley
Harper Nalley8:36 AM

Well, mine is in many pieces, so I don’t know.

2018-02-04
Harper Nalley
Harper Nalley2:38 PM

@Nora Wilson @Harrison @Jules Blythe there is a meeting tomorrow, (Monday, February 5th) are any of you able to go?

Nora Wilson
Nora Wilson2:38 PM

When?

Harrison
Harrison2:39 PM

What time

Harper Nalley
Harper Nalley2:41 PM

1:45-5:00

Harrison
Harrison2:42 PM

I can go

Jules Blythe
Jules Blythe2:46 PM

I will be able to make it as well

Harper Nalley
Harper Nalley3:05 PM

Awesome!

Nora Wilson
Nora Wilson3:42 PM

I have violin practice at 2:00, I could come possibly come at 3:00.

Nora Wilson
Nora Wilson3:50 PM

Additionally, if I play my cards right I could stay afterwards.

Harper Nalley
Harper Nalley6:09 PM

Okay

Nora Wilson
Nora Wilson7:27 PM

I can come from 3:00 to 5:30

2018-02-05
Nora Wilson
Nora Wilson2:38 PM

How’s it coming?

Jules Blythe
Jules Blythe2:38 PM

Good

2018-02-07
Harper Nalley
Harper Nalley2:15 PM

I will be there at 4:00 at the latest

Nora Wilson
Nora Wilson3:52 PM

4:15 at the latest for me

2018-02-09
Jules Blythe
Jules Blythe8:13 AM

@Harper Nalley how far did you guys get with the sewing?

Harper Nalley
Harper Nalley10:35 AM

We finished sewing and stapling.

Harper Nalley
Harper Nalley2:20 PM

@Nora Wilson @Jules Blythe @Harrison Today we will be working on putting brackets on the robot. This will entail putting locktight on the M3 screws cutting them down (M3 screws are the ones that attach the latches to the brackets). We will be drilling some holes in the robot where the brackets will be, and attaching the latch hard-points to the bot.

2018-02-10
Nora Wilson
Nora Wilson12:53 PM

Please update me at the end of the meeting as to if we are finished/what we accomplished.

Harper Nalley
Harper Nalley12:59 PM

Will do

Nora Wilson
Nora Wilson5:39 PM

How are we?

Harper Nalley
Harper Nalley5:42 PM

We are almost done, we need to put a couple more brackets on and two more hard-points into the robot. I have worked it out with Peter and we won’t be getting in the way of him working on electronics.

2018-02-16
Declan Freeman-Gleason
Declan Freeman-Gleason4:29 PM

@Declan Freeman-Gleason has joined the channel

2018-11-04
Micah C. Glasby
Micah C. Glasby9:24 PM

@Micah C. Glasby has joined the channel

2018-11-26
Harper Nalley
Harper Nalley6:41 PM

This is the instruction manual for bumpers

2019-01-05
Jack Scheiderman
Jack Scheiderman7:23 PM

@Jack Scheiderman has joined the channel

2019-01-18
Lane Johnson
Lane Johnson7:44 PM

@Lane Johnson has joined the channel

2019-01-22
Enrique Chee
Enrique Chee12:56 AM

@Cruz Strom please get back to me on Wed. about the bumper brackets that Lucas requested . Do we have some lying around the metal scrap tray ? Have we removed from old bumpers ? If we need to order ? How many and from where ? @Harper Nalley @Micah C. Glasby @Kenneth Wiersema Lucas said he could not find on Amazon and he personally purchased them last year from what used to be called Probuild. This should have been ordered during preseason if needed .

Harper Nalley
Harper Nalley12:59 AM

@Enrique Chee Micah has the numbers for the orders. The reason we need more stuff is because of unforeseen changes to the design that this game and robot require.

Enrique Chee
Enrique Chee2:18 AM

Is the above item from Amazon correct ?

Micah C. Glasby
Micah C. Glasby7:42 AM

@Harper Nalley those look right

Harper Nalley
Harper Nalley8:16 AM

No, it’s not

Enrique Chee
Enrique Chee8:16 AM

How many ?

Harper Nalley
Harper Nalley8:17 AM

Those aren’t correct, the ones we need for the sides are longer on one end

Enrique Chee
Enrique Chee8:26 AM

Please search in Amazon . Dimensions ?

Cruz Strom
Cruz Strom8:48 AM

I will look tonight

Harper Nalley
Harper Nalley8:49 AM

I know that they are 3” wide and 1/16” thick. However, the ones we need the most of are 4” wide and 1/8” thick

Harper Nalley
Harper Nalley8:51 AM

Beyond that, I don’t know dimensions.

Harper Nalley
Harper Nalley8:52 AM

We need 4 of the 1/16” for spares

Harper Nalley
Harper Nalley8:53 AM

We need 14 of the 1/8” brackets

Harper Nalley
Harper Nalley8:54 AM

If the pricing on that bracket Mr. Chee posted from Amazon is any indication, it would be a LOT cheaper to buy at ProBuild—probably around 1/5th the cost.

Chris Rininger
Chris Rininger8:18 PM

@Chris Rininger has joined the channel

Chris Rininger
Chris Rininger8:19 PM

Hi all, I assume you already have a plan for bumpers, but in case you're interested here is a good thread on bumpers from Chief Delphi (including a how-to paper): https://www.chiefdelphi.com/t/paper-frc-robot-bumpers-guide/163091

Chris Rininger
Chris Rininger8:42 PM

Regarding possibly using the team font for our bumper numbers, would this work? (in white letters, of course)

Harper Nalley
Harper Nalley8:51 PM

@Chris Rininger I considered doing that last year, but it would have required that we paint on the numbers which, while possible, wouldn’t be very time effective. It’s up to @Micah C. Glasby, but I’d say we should use our current number system this year and use up the numbers we have, and then try this next year rather than buying new numbers.

Harper Nalley
Harper Nalley8:52 PM

@Cruz Strom do you know if we received FIRST Logos in the tote this year?

Declan Freeman-Gleason
Declan Freeman-Gleason9:46 PM

Are you aware of @Chris Rininger's offer to get the material cut into that shape using a fabric "CNC"? He posted something about it here: https://spartronics.slack.com/archives/C16U2PW1K/p1547875865259800 @Micah C. Glasby seemed to be on board.

Chris Rininger
Chris Rininger9:48 PM

What I might do is ask her to make a few sets of numbers, and then you could use them or not.

Nora Wilson
Nora Wilson9:59 PM

I know it’s not very time effective, but I’m a fairly good painter and would be more than happy to do the numbers if needed. I could probably get it done in 1-2 meetings; especially if given stencils.

Micah C. Glasby
Micah C. Glasby10:05 PM

@Chris Rininger That would be awesome! Do you need us to get a sheet of the material for her?

Chris Rininger
Chris Rininger10:11 PM

It would be a good idea to specify the preferred material at least. Are the letters iron-on fabric, vinyl, or what? If vinyl, you can actually just upload your own font and have them made online. Here's one place I found: https://www.youcustomizeit.com/p/Design-Your-Own-Graphic-Iron-On-Transfer-Up-to-6-x6-Personalized/186786?msclkid=e529af9948f613e94299f3dea30ae982&utmsource=bing&utmmedium=cpc&utmcampaign=YouCustomizeIt%20PLAs&utmterm=4576785872183964&utmcontent=All%20Products#designer

Chris Rininger
Chris Rininger10:12 PM

Come to think of it, I would bet Sound Reprographics could set us up as well. Happy to ask my mom though - she likes helping with things like that - a chance to use her machine.

Micah C. Glasby
Micah C. Glasby10:37 PM

I'll see what the numbers we have are made of, but my guess is we'll end up getting vinyl.

2019-01-23
Cruz Strom
Cruz Strom5:48 AM

@Harper Nalley, I will check during the meeting.

Nora Wilson
Nora Wilson8:42 AM

@Nora Wilson has left the channel

Chris Rininger
Chris Rininger11:15 PM

@Micah C. Glasby My mom replied and said she would enjoy contributing the bumper numbers in the team font. We need to confirm for her what material. She works at a fabric shop & they have fabric or vinyl, adhesive or iron on. Also, when would they be needed?

2019-01-24
Chris Rininger
Chris Rininger10:37 AM

Concerning bumper numbers in our team font, my mother is interested in making them. Here are the open questions:
- What material?
- Iron on or adhesive?
- How many of each number (think about future years also)?
- Needed by when?
- Look at the picture - do you like the wider or skinnier numbers? Or I could ask for some of both.

2019-01-30
Lane Johnson
Lane Johnson9:07 PM

I’m going to try to bring my sewing machine for the bumpers next meeting, but I haven’t sewn for a little while so I would like some help or if someone’s may be willing to sew our bumpers who has more experience (@Kate Swietlik or @Riyadth Al-Kazily) then by all means, sew away! P.s. do we already have supplies for the sewing in the bumpers drawer or will we have to get some?

Kate Swietlik
Kate Swietlik9:07 PM

@Kate Swietlik has joined the channel

Riyadth Al-Kazily
Riyadth Al-Kazily9:10 PM

I don't have bumper experience with sewing (I just loaned my machine the last couple of years). But I do know how to thread a needle and do some basic stitch work, so I might be able to point someone in the right direction. I recommend searching for "sewing frc bumpers" on YouTube for some good instructional videos.

Lane Johnson
Lane Johnson9:13 PM

Nice! Thanks Riyadth!

2019-02-01
Micah C. Glasby
Micah C. Glasby7:51 AM

I will be a little late.

Chris Rininger
Chris Rininger7:57 AM

There might be some tips on bumper sewing in the “how to” presentation posted on Jan 22. You can also search Chief Delphi in addition to YouTube.

Chris Rininger
Chris Rininger1:39 PM

@Micah C. Glasby Update on the numbers from my mom. She's going to work on them this weekend. She'll use iron-on vinyl from the fabric store where she works. And based on the measurements we took of the existing numbers, here is what the numbers will look like. If it is too late for this year, we'll have them for future years.

2019-02-04
Micah C. Glasby
Micah C. Glasby6:21 PM

Quick q: what all did we get done yesterday?

2019-02-05
Harper Nalley
Harper Nalley10:53 AM

@Lane Johnson will know more than I do, but he started putting the numbers on the fabric.

2019-02-21
Chris Rininger
Chris Rininger7:25 PM

Interesting discussion about solid vs. hollow pool noodles... https://www.chiefdelphi.com/t/hollow-vs-solid-noodles/166972

Apparently if defense will be a factor, solid are better. I was actually looking because I'm interested in how much bumpers compress when they impact a wall at full speed. Consensus is that solid noodle bumpers will compress less (which is better in the context of the problem I'm looking at - see the hatch channel if interested). Is it safe to assume we're using hollow pool noodles, given they're more common?

Harper Nalley
Harper Nalley7:26 PM

@Chris Rininger In the past we have used solid, I’m not sure about this year though, @Micah C. Glasby should know.

Micah C. Glasby
Micah C. Glasby9:08 PM

Hollow generally. We ran out so there is one side segment and 1 or 2 front or back segments of solid. After hitting them all I didn’t notice much of a difference. However, I don’t know how they will behave in the future.

Chris Rininger
Chris Rininger9:13 PM

Knowing what we know now, these 2 5/8 solid ones (should pass the approximately 2 1/2" thickness rule) would be good to use on that side at least. https://www.amazon.com/gp/product/B07GZZ8GTL/ref=oxscacttitle1?smid=A2HW502SC5OSR8&psc=1 Not sure if it's worth considering changing that side, but we are in a bit of a pickle with the chute being exposed to over a ton of force, and it could help a bit.

2019-03-12
Micah C. Glasby
Micah C. Glasby7:12 PM

@Harper Nalley What do bumpers need for open house? I gathered from Andrew that in the past we have shown the progression in bumpers. Is that correct? If so, should I pull down all the bumpers from past years?

2019-04-10
Justice James
Justice James3:07 PM

@Justice James has joined the channel

Justice James
Justice James3:08 PM

@Justice James has left the channel

2019-11-07
Max Morse
Max Morse12:19 AM

@Max Morse has joined the channel

2019-12-11
James Sovick
James Sovick7:59 PM

@James Sovick has joined the channel