Forum: General Forum
22-12-2016, 10:16
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Replies: 38
Views: 2,165
Re: Belts 9mm or 15mm?
Belt offers more advantages over chain than just weight savings. They are slightly more efficient, they are cleaner, they do not stretch, and they do not require maintenance. We have used 24 tooth...
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Forum: General Forum
06-10-2016, 12:24
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Replies: 288
Views: 6,651
Re: Registration 2017
How is it that FIRST can't seem to get this right? Didn't they have a dry run yesterday with the District Teams? Why do teams pay these people $5,000-about $15,000 a year when we can't even...
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Forum: Extra Discussion
23-06-2016, 09:28
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Replies: 52
Views: 4,569
Re: pic: Another Belt-In-Tube Drivetrain
How do you plan to attach your belly pan to this setup? We use belt in tube and I have wanted to go to a smaller tube but I always worry about the rivets rubbing the belt.
An alternative to...
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Forum: General Forum
07-04-2016, 09:54
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Replies: 190
Views: 42,704
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Forum: General Forum
04-04-2016, 08:50
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Replies: 121
Views: 18,660
Re: 20 point auto club
Team 2791 has a 20 point auto this year :)
(https://www.youtube.com/watch?v=8lUen2X_a_M&feature=youtu.be)
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Forum: Regional Competitions
27-03-2016, 13:25
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Replies: 48
Views: 6,030
Re: 2016 Finger Lakes Regional
On behalf of Shaker Robotics, Team 2791, I would like to thank the Regional Planning Committee for hosting such a great event again this year. Thank you 5254 for choosing us to be on your alliance,...
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Forum: General Forum
29-02-2016, 15:01
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Replies: 93
Views: 11,708
#25 Chain
Hi Folks,
Typically we use belt for our drive train. This year with the bigger wheels we are decided that we wanted a stronger transfer method so we switched to #25 chain. We are running 8"...
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Forum: General Forum
12-01-2016, 12:57
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Replies: 18
Views: 2,881
Re: 8" Non-Pneumatic Wheels
Yeah, you get this hub, and press it into the Colson with an arbor press. They work great. We are not using Colsons this year, but they are a much better option over the kit wheels you have linked,...
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Forum: Extra Discussion
09-12-2015, 17:28
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Replies: 20
Views: 3,415
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Forum: Extra Discussion
09-12-2015, 16:56
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Replies: 20
Views: 3,415
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Forum: Extra Discussion
05-12-2015, 09:09
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Replies: 16
Views: 3,252
Re: pic: 2823 Offseason WCD Test Chassis
That image of the belt path that you found is from our 2011 robot, it was our first attempt at a belt drive. It skipped teeth and did not work well.
We redesigned the system in 2012. We use 1 1/2"...
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Forum: Extra Discussion
04-12-2015, 14:21
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Replies: 16
Views: 3,252
Re: pic: 2823 Offseason WCD Test Chassis
It is really difficult to drop a gearbox out of the bottom of a belly pan, by the time that you pull the axle out of the tube you would need to remove most if not all of the center section of the...
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Forum: Extra Discussion
04-12-2015, 14:06
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Replies: 16
Views: 3,252
Re: pic: 2823 Offseason WCD Test Chassis
Nice job for your first attempt! A few minor points to make the system better.
First, if your chains were to break you would need to remove either your front or rear rail to access them. As of...
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Forum: General Forum
01-12-2015, 19:56
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Replies: 12
Views: 1,825
Re: Electrical 'Clutch' for winch
It think they are using a VEX Shirter Output Shaft. (http://www.vexrobotics.com/vexpro/motion/gearboxes/3cimballshifter/217-4098.html) One position the winch engages the pawl the other position it...
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Forum: Extra Discussion
02-11-2015, 15:24
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Replies: 6
Views: 1,848
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Forum: Extra Discussion
02-11-2015, 08:00
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Replies: 6
Views: 1,848
Re: pic: Follower Wheel
Jay is right, two 60 tooth gears are the smallest stock gears to clear the wheel and encoder. We may try to 3d print a smaller gear, but the additional distance between gears also allows for more...
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Forum: Extra Discussion
31-10-2015, 13:41
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Replies: 6
Views: 1,848
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Forum: Technical Discussion
30-09-2015, 15:32
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Replies: 16
Views: 3,392
Re: Belt Driven Drive Trains
Thank you for your feed back. If clearance were the only thing I was worried about I would just go with the 18 tooth pulley and not bother to ask how they would work here. :)
In my opinion, if you...
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Forum: Technical Discussion
29-09-2015, 10:43
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Replies: 16
Views: 3,392
Belt Driven Drive Trains
Hi all. We have been running belt driven drive trains for about 5 seasons now. We run 15mm belt on a 24 tooth pulley inside of a 1.5 x 3 tube. (we have never had a belt break) I am interested in...
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Forum: General Forum
02-06-2015, 11:19
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Replies: 0
Views: 744
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Forum: General Forum
13-01-2015, 10:12
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Replies: 15
Views: 4,669
Roller Intake - What wheels work best for Totes?
We are designing a roller intake to bring the totes into our robot. We have had success with BaneBot wheels but we are trying not to use them because they wear out so quickly. Who else is working...
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Forum: Electrical
13-01-2015, 10:07
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Replies: 52
Views: 11,966
Re: Encoders for 2015 Season
We use Grayhill Encoder 63R128 (http://www.digikey.com/product-detail/en/63R128/GH3069-ND/304478) They are terrific encoder, and Digi key sells them at a good price. We use 128 count encoders for...
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Forum: Technical Discussion
05-01-2015, 14:12
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Replies: 17
Views: 4,728
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Forum: Extra Discussion
22-05-2014, 11:09
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Replies: 17
Views: 6,138
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Forum: Extra Discussion
26-03-2014, 09:18
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Replies: 16
Views: 3,362
Re: pic: Bearing block idea
We use belts in our Drive Train and use exact center to center distances. That allows us to skip the tensioner all together. Although in the real world exact C to C is not recommended it is not a...
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Your robot weight goes up after you release the balloons. Re-inspection! - GaryVoshol [more] 
