View Single Post
  #5   Spotlight this post!  
Unread 30-10-2014, 07:06
TD78 TD78 is online now
Registered User
AKA: Tom Dolan
FRC #0078 (AIR Strike)
Team Role: Leadership
 
Join Date: Sep 2002
Rookie Year: 2002
Location: Middletown, RI
Posts: 361
TD78 has a brilliant futureTD78 has a brilliant futureTD78 has a brilliant futureTD78 has a brilliant futureTD78 has a brilliant futureTD78 has a brilliant futureTD78 has a brilliant futureTD78 has a brilliant futureTD78 has a brilliant futureTD78 has a brilliant futureTD78 has a brilliant future
Re: pic: FRC558's modified VEXpro Drive in a Day

Quote:
Originally Posted by Gregor View Post
If you were to use proper length spacers with the bolts, couldn't you tighten the bolt too?
In my past experience, if the bolts were tightened (to the point of them trying to act as a stiffener) with spacers, the spacers would interfere with the bearings and lock them up, making the dead axle wheel hard to rotate.

Ideally in this configuration, you would use standoffs around the axle to provide stiffness. That adds more parts, more weight, etc. Not hard to do, but you are limited to using the mounting holes provided by the DIAD, chain routing, etc.

Anyone have thoughts on using 3/8" steel rod as dead axles? Tap both ends of the axle and it'd be close to using tube axle/bolt. I wouldn't think a 1/4"-20 bolt would work...not enough thickness left in the rod. Something smaller like a #10 or #8...at which point you would have to drill all 4 holes in the DIAD sideplate, rather than using the pre-punched 1/4" hole for the outer wheels (of the 8wd)...but it could work.
__________________


FRC78: 2010-Present
FRC121: 2002-2009
Reply With Quote