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Unread 08-01-2014, 17:14
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Joe Johnson Joe Johnson is offline
Engineer at Medrobotics
AKA: Dr. Joe
FRC #0088 (TJ2)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 1996
Location: Raynham, MA
Posts: 2,648
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Re: Robot in 3 Days Robot Reveals

Quote:
Originally Posted by marccenter View Post
Dr Joe,

1) Can you also quickly comment on the Versa planetary gear ratio you used on the torro sticks and I'm thinking about ordering those today.

BTW, the motor/chain powered launch mechanism is leading me away from a winch/catapult style design for my team.

Regards,

Marc Center, FRC3548 coach
The VersaPlanetary set up is this:
  • Banebot 18V motor as input (crazy overkill but when you are building a robot in 3 days you use what you have in hand and once you find a thing that works, you don't change it unless you have to).
  • 4:1 stage 1
  • 5:1 stage 2
  • 1/2 hex output.

I love the versaplanetary system. I think they are a huge help to teams prototyping because it is so easy to change the motor or the ratio or the output shaft. I've got no financial stake in the product or company, I recommend buying a boatload of ratios and output styles (1/2" hex and 1/2" round are my preference).

Calling 'em like I see 'em.

Dr. Joe
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