View Single Post
  #9   Spotlight this post!  
Unread 03-11-2014, 19:26
jman4747's Avatar
jman4747 jman4747 is offline
Just building robots
AKA: Josh
FRC #4080 (Team Reboot)
Team Role: CAD
 
Join Date: Apr 2013
Rookie Year: 2011
Location: Atlanta GA
Posts: 418
jman4747 has a reputation beyond reputejman4747 has a reputation beyond reputejman4747 has a reputation beyond reputejman4747 has a reputation beyond reputejman4747 has a reputation beyond reputejman4747 has a reputation beyond reputejman4747 has a reputation beyond reputejman4747 has a reputation beyond reputejman4747 has a reputation beyond reputejman4747 has a reputation beyond reputejman4747 has a reputation beyond repute
Re: pic: 3CIM Single stage shifter

Quote:
Originally Posted by BBray_T1296 View Post
Any reason you chose to put the higher reduction on the outside (further from the CIM)?
Your low gear would be operating at higher torques and there would be more deflecting force attempting to separate the gears.

This is probably not even a real issue but with a cantilevered shaft it is usually better to keep the net force closer to the bushing.
Your right, my only real reason was: 1 if I wanted to replace a motor I could in this configuration pull it straight out (assuming I enlarged the hole the cim shaft goes through). If the smaller cim gear was closer to the motor the 60t gear and 24t gear would block each other. Granted that is dependent on exactly how the cim gears are attached to the shaft and how easily they come off. 2 I figured it would be okay with this short of a shaft. It seems almost arbitrary and if/when we use it we'll probably try both? Maybe one is significantly better.
__________________
---------------------
Alumni, CAD Designer, machinist, and Mentor: FRC Team #4080

Mentor: Rookie FTC Team "EVE" #10458, FRC Team "Drewbotics" #5812

#banthebag
#RIBMEATS
#1620
Reply With Quote