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 Yes ONE blue banner would be nice one of these days, but I've never lost focus of why we as mentors do what we do. It's about preparing the students for "defense" in life, and laugh when your robot gets scored into a goal. - Chris_Elston [more] |
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By: Owen Busler
New: 21-01-2016 01:32
Updated: 21-01-2016 01:32
Views: 2340 times
I guess I didn't give enough instruction when I asked an inexperienced team member to assemble a versa planetary with a 1:7 reduction. Once he reached this step he asked where he could find bolts long enough to hold it together.
It ended up as a 7^7:1 (823543:1) reduction.
Discussion
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21-01-2016 10:05
Nathan Streeter
Re: pic: 823543:1 Reduction Versaplanatery
Too funny!
If my quick calculations are correct, you'd have to wait 57 minutes to watch the output shaft make one revolution!
21-01-2016 10:06
Ryan Caldwell
Re: pic: 823543:1 Reduction Versaplanatery
this will resolve any issue with back drive.
21-01-2016 10:06
CalTran
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by Nathan Streeter
Too funny!
If my quick calculations are correct, you'd have to wait 57 minutes to watch the output shaft make one revolution! |
21-01-2016 10:12
PayneTrain
Re: pic: 823543:1 Reduction Versaplanatery
Just *barely* falls off the load rating chart.
However you can always ship it back to Paul if you break it; you know, see what happens.
21-01-2016 10:13
Tim Sharp
Re: pic: 823543:1 Reduction Versaplanatery
Should be fine if you ever need to pick up a truck...or a house.
21-01-2016 10:16
Nathan Streeter
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by CalTran
But man, think of the torque implications that has!
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261,000 foot-pounds of torque could lift every single robot in FRC together... still with a 12" spool. Of course, you'd want to use like a 3" spool so it could still lift at peak power, not stall... and it'd take about 2 and a half hours... and 254's stockpile of batteries.
21-01-2016 10:19
carpedav000
Re: pic: 823543:1 Reduction Versaplanatery
This looks like something 71 would be responsible for 
21-01-2016 11:06
Sperkowsky
Re: pic: 823543:1 Reduction Versaplanatery
So have you found the screws yet? Reminds me of this https://www.youtube.com/watch?v=VUbpb23yTK8
21-01-2016 12:09
HunterS
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by Tim Sharp
Should be fine if you ever need to pick up a truck...or a house.
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21-01-2016 12:34
Zebra_Fact_Man
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by Nathan Streeter
Too funny!
If my quick calculations are correct, you'd have to wait 57 minutes to watch the output shaft make one revolution! |
21-01-2016 12:37
marshall
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by Nathan Streeter
Too funny!
If my quick calculations are correct, you'd have to wait 57 minutes to watch the output shaft make one revolution! |
21-01-2016 12:57
marcusbernstein
Re: pic: 823543:1 Reduction Versaplanatery
Why climb up to the scaling rungs when you can move the entire field down to your robot's height?
21-01-2016 12:57
D_Price
Re: pic: 823543:1 Reduction Versaplanatery
Too funny. At least that team member is learning the idea of gear ratios. haha
21-01-2016 12:58
EmileH
Re: pic: 823543:1 Reduction Versaplanatery
You might draw enough current just turning all those gears to actually brown out your RoboRIO. At free speed.
21-01-2016 13:08
SenorZ
Re: pic: 823543:1 Reduction Versaplanatery
Give me enough gearboxes and I'll move the world.
21-01-2016 14:01
Richard Wallace
Re: pic: 823543:1 Reduction Versaplanatery
I wonder how much voltage you can apply before a sun gear shears off? Also which one will shear?
I imagine this will happen even if nothing is connected to the output shaft.
21-01-2016 14:06
billbo911
Re: pic: 823543:1 Reduction Versaplanatery
Efficiency? We don't need no efficiency!
21-01-2016 14:23
EmileH
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by billbo911
Efficiency? We don't need no efficiency!
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21-01-2016 15:18
Foster
Re: pic: 823543:1 Reduction Versaplanatery
Cool, looks like it's a good start to the 10,000 year clock construction.
A few more stages, some threaded rod and a pointer and you can mark it DONE!
21-01-2016 16:31
mastachyra
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by Zebra_Fact_Man
Congratulations; you almost just made yourself the world's torquiest hour hand.
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21-01-2016 21:48
theCADguy
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by mastachyra
and it would be about as hard to stop as actually stopping time!
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21-01-2016 22:52
Oslim1999
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by Nathan Streeter
If my quick calculations are correct, you'd have to wait 57 minutes to watch the output shaft make one revolution!
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22-01-2016 15:11
gpetilli
Re: pic: 823543:1 Reduction Versaplanatery
Reminds me of the time I asked a freshman to grease the gears in the gearbox they had assembled. I came back 5 minutes later to find an absolutely perfectly even coat of grease on both sides of the 50T gears - none on the teeth. A true artist.
22-01-2016 16:47
IKE
Re: pic: 823543:1 Reduction Versaplanatery
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Originally Posted by Nathan Streeter
Too funny!
If my quick calculations are correct, you'd have to wait 57 minutes to watch the output shaft make one revolution! |
https://www.youtube.com/watch?v=5q-BH-tvxEg
22-01-2016 16:53
waialua359
Re: pic: 823543:1 Reduction Versaplanatery
Maybe your student thought you folks were using it to launch real boulders.
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