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Unread 14-03-2014, 12:31
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TheKeeg TheKeeg is offline
Michigan Tech Engineering
AKA: Keegan Harrington
FRC #0068 (Truck Town Thunder)
Team Role: College Student
 
Join Date: Jun 2012
Rookie Year: 2013
Location: Ortonville, Michigan
Posts: 77
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Re: Gearbox Question

Quote:
Originally Posted by Ginger Power View Post
We are having trouble winching down our catapult. We currently have a toughbox mini with 2 mini cims in it. We have the ability to put 2 cims in it but we are currently pretty far from the power we want to have for our catapult (like halfway or less to our goal and the motors stall out). We also have a reduction after the toughbox mini with a 19 tooth gear driving a 48 tooth gear. I wanted to know of any gearboxes that really gear the motor down and offer a lot more force. Also if the difference in power between cims and mini cims is significant enough could this solve our problem? If you could post a link to the website for the gearbox it would be greatly appreciated.
On our winch, we used an RS 775 with a 1:100 versa planetary gearbox (1/2 inch Hex output). We estimate that it takes about 50-75 lbs to pull the catapult back and it does so in roughly 3 seconds.

P.S. Our spool has a 2 in OD
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Keegan Harrington
Truck Town Thunder
2013-2014: Mechanical Design

"Infinity: you empty out all of the coffee and there is still more orange juice"

Last edited by TheKeeg : 14-03-2014 at 12:35.