|
|
|
 ...remember, this is coming from someone that spent the better part of an afternoon playing with an omniwheel--not assembling, not disassembling, just playing. - Billfred [more] |
 |
|
|||||||
|
||||||||
After posting designs for a shifting swerve drive on these forums a few days ago, I was in a CADing mood. Designs that I've done previously prioritized the horizontal compactness very highly, so in this one I tried to make it as low as possible while still having a vertical CIM motor. It's also the lightest weight module I've designed so far. It weighs in at 27.2lbs total according to inventor. (includes most hardware)
Discussion
view entire thread
10-11-2014 17:06
Bryce2471
Re: pic: Lightweight swerve Chassis
| What's the thickness of the 2x1? |
that's what I've heard a lot of good teams recommend for WCD, and this is a similar aplication.
10-11-2014 17:14
Jared
Re: pic: Lightweight swerve Chassis
|
Originally Posted by Bryce2471
It's 0.0625"
that's what I've heard a lot of good teams recommend for WCD, and this is a similar aplication. |
That said, I doubt next year's game will involve so much ramming, so you might be able to get away with it.
10-11-2014 17:50
Bryce2471
Re: pic: Lightweight swerve Chassis
|
Originally Posted by Jared
I'd be a little scared of the 1/16th wall tube for your drive base. We used 1/8th last year, and we had a strong one piece bumper protecting it, and we managed to bend our front a little bit. I would imagine that the damage would have been a lot worse if we had thinner wall thickness.
That said, I doubt next year's game will involve so much ramming, so you might be able to get away with it. |
I think that this chassis would be fine in most games because the extrusions would have strong gussets, and a large belly pan to support them.
10-11-2014 21:29
Marc S.
Re: pic: Lightweight swerve Chassis
1/16" wall tubing is plenty strong enough as long as your bumpers are built correctly. The main reason elite teams use 1/8" for WCD's is because they need the strength for the bearing block slots.
973 used exclusively 1/16" 2"x1" 6061 tubing on "Emperor Swerve" and "Encore", which were both swerve drives back when the base was 28"x38".
11-11-2014 19:53
azcalg
Re: pic: Lightweight swerve Chassis
Not really related to the design, which I think is awesome, but just out of curiosity, how long did this take to CAD? I also get in CADing moods and we've been planning on an octocanum drive train for this year and I've made countless versions of it and they usually take anywhere from 4-12 hours to hammer out all the details and assemble everything.
11-11-2014 20:21
Bryce2471
Re: pic: Lightweight swerve Chassis
|
Originally Posted by azcalg
Not really related to the design, which I think is awesome, but just out of curiosity, how long did this take to CAD? I also get in CADing moods and we've been planning on an octocanum drive train for this year and I've made countless versions of it and they usually take anywhere from 4-12 hours to hammer out all the details and assemble everything.
|
Because this model was designed almost entirely from scratch, it took good 6-ish hours of CADing to get to the point shown in the picture. When I get a chance, I'll do some other versions of this design, and those designs shouldn't take as long as this one did.
It also helps that I have some experience designing swerves, and drive trains in general.
view entire thread
Tags
loading ...