Forum: Extra Discussion
Today, 03:25 PM
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Replies: 17
Views: 916
Re: pic: Quick-Change Chassis 2
True, which is why I said "as low as", but even at the high-end of that efficiency curve, at 90% efficiency you still have a less efficient drive system than virtually any other machine on the field,...
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Forum: Extra Discussion
Today, 11:38 AM
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Replies: 17
Views: 916
Re: pic: Quick-Change Chassis 2
This point I will grant you, however I would think you would want to consider using bevel gears instead of worm gears. While back-drive resistance is nice, worm-gear efficiency can be as low as 50%,...
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Forum: Extra Discussion
Today, 09:52 AM
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Replies: 17
Views: 916
Re: pic: Quick-Change Chassis 2
I guess I'm curious as to what scenario would require a complete removal of a drive module like this in less than 1 minutes.
Changing out wheels could certainly be done more quickly than removing...
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Forum: Extra Discussion
Yesterday, 05:13 PM
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Replies: 17
Views: 916
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Forum: General Forum
01-01-2017, 06:10 PM
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Replies: 40
Views: 4,425
Re: Robot in 3 Days 2017
Debates aside, I do hope Ri3D makes it easier to find the streams and YouTube videos from the various teams this year. The past few years you really had to go digging for content for some of the...
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Forum: General Forum
12-29-2016, 02:34 AM
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Replies: 34
Views: 2,935
Re: Rivnut Tool
Not to get too off-topic, but as someone who had never even heard of Rivnuts before seeing this thread, I'm curious... What are the actual benefits of using a Rivnut? Most of the application examples...
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Forum: General Forum
12-25-2016, 11:55 PM
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Replies: 73
Views: 11,532
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Forum: General Forum
12-23-2016, 06:12 PM
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Replies: 73
Views: 11,532
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Forum: General Forum
12-23-2016, 11:17 AM
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Replies: 5
Views: 1,161
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Forum: General Forum
12-22-2016, 05:07 PM
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Replies: 12
Views: 1,564
Re: Best use of bumpers yet
Too many engineers on this thread, everyone has overlooked the most obvious and important question...
Is it comfortable?
:rolleyes:
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Forum: General Forum
12-19-2016, 09:19 AM
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Replies: 122
Views: 11,288
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Forum: Extra Discussion
12-18-2016, 01:24 PM
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Replies: 17
Views: 1,107
Re: pic: 4143 differential swerve concept
Interesting design, one thought though:
Assuming FIRST keeps the same rules that they have the past few years, in all likelihood there will be a limit of 4-6 CIMs on a robot which would make this...
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Forum: Pneumatics
12-15-2016, 10:12 AM
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Replies: 19
Views: 1,575
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Forum: Pneumatics
12-14-2016, 12:22 PM
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Replies: 19
Views: 1,575
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Forum: Extra Discussion
12-13-2016, 04:57 PM
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Replies: 37
Views: 3,629
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Forum: Technical Discussion
12-13-2016, 04:19 PM
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Replies: 5
Views: 896
Re: Strength of Versaplanetary & PG-188
The only issue we ever ran into with a Versaplanetary was when we sheared the sun gear on a 10:1 stage of a 300:1 gearbox. In retrospect it was our fault for assembling it the way we did (we should...
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Forum: Motors
12-13-2016, 03:55 PM
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Replies: 7
Views: 832
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Forum: General Forum
12-11-2016, 11:47 AM
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Replies: 10
Views: 666
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Forum: General Forum
12-10-2016, 06:07 PM
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Replies: 11
Views: 701
Re: 5010 T-Shirt Robot Update
I share the concerns about PVC, though this particular design looks like it could easily led itself to the addition of a "Shrapnel Shield" around the barrels using polycarbonate or some other...
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Forum: Electrical
12-09-2016, 04:21 PM
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Replies: 12
Views: 1,106
Re: Powering two compressors with one PCM
Older default code (2014 and before) would have some basic examples, though it should be pretty easy to program yourself.
There should be a way to read the pressure sensors state from the PCM in...
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Forum: Extra Discussion
12-09-2016, 01:44 PM
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Replies: 37
Views: 3,629
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Forum: Extra Discussion
12-09-2016, 11:21 AM
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Replies: 37
Views: 3,629
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Forum: Electrical
12-08-2016, 08:00 PM
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Replies: 12
Views: 1,106
Re: Powering two compressors with one PCM
Just hook the second compressor up to a spike relay (or, less ideally, any other speed controller if you don't have one) and toggle it in code using the pressure switch to turn it off.
As EricH...
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Forum: General Forum
12-07-2016, 11:43 AM
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Replies: 31
Views: 3,785
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Forum: Pneumatics
12-06-2016, 03:55 PM
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Replies: 48
Views: 4,891
Re: 1.1 Pump (am-3227) Really an improvement?
Not sure if you have a thermal probe handy, but is there any chance you could test heat buildup over time as well as time to cool down to room temp with those compressors? We did some testing...
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[Programming a swerve drive] It's really really simple, unless you actually do it. - Ether [more] 
