Go to Post Incidentally, this is a good example of why lawyering the FIRST rules is good practice for the real world. By critically analyzing FIRST's errors, you practice for the day when you need to critically analyze legislators' errors (and deliberate trickery). - Tristan Lall [more]
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  #16   Spotlight this post!  
Unread 21-01-2016, 12:58
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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.
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Unread 21-01-2016, 13:08
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Re: pic: 823543:1 Reduction Versaplanatery

Give me enough gearboxes and I'll move the world.
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Unread 21-01-2016, 14:01
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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.
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Unread 21-01-2016, 14:06
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Re: pic: 823543:1 Reduction Versaplanatery

Efficiency? We don't need no efficiency!
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Unread 21-01-2016, 14:23
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Re: pic: 823543:1 Reduction Versaplanatery

Quote:
Originally Posted by billbo911 View Post
Efficiency? We don't need no efficiency!
Reminded me of this.
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Last edited by EmileH : 21-01-2016 at 14:52.
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Unread 21-01-2016, 15:18
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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!
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Unread 21-01-2016, 16:31
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Re: pic: 823543:1 Reduction Versaplanatery

Quote:
Originally Posted by Zebra_Fact_Man View Post
Congratulations; you almost just made yourself the world's torquiest hour hand.
and it would be about as hard to stop as actually stopping time!
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Unread 21-01-2016, 21:48
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Re: pic: 823543:1 Reduction Versaplanatery

Quote:
Originally Posted by mastachyra View Post
and it would be about as hard to stop as actually stopping time!
Unless you know of an easy way to generate 2,882,400 in-lbs of torque! (Assuming the BAG motor is stalled at an input torque of 3.5 in-lb)
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Unread 21-01-2016, 22:52
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Re: pic: 823543:1 Reduction Versaplanatery

Quote:
Originally Posted by Nathan Streeter View Post
If my quick calculations are correct, you'd have to wait 57 minutes to watch the output shaft make one revolution!
Is that accounting for any backlash (or i guess forward-lash?) in between the gears, especially on the final gears?
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Unread 22-01-2016, 15:11
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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.
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Unread 22-01-2016, 16:47
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Re: pic: 823543:1 Reduction Versaplanatery

Quote:
Originally Posted by Nathan Streeter View Post
Too funny!

If my quick calculations are correct, you'd have to wait 57 minutes to watch the output shaft make one revolution!
Still a little too fast for art:
https://www.youtube.com/watch?v=5q-BH-tvxEg
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Unread 22-01-2016, 16:53
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Re: pic: 823543:1 Reduction Versaplanatery

Maybe your student thought you folks were using it to launch real boulders.
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