View Single Post
  #3   Spotlight this post!  
Unread 20-10-2011, 02:37
Tristan Lall's Avatar
Tristan Lall Tristan Lall is offline
Registered User
FRC #0188 (Woburn Robotics)
 
Join Date: Aug 2001
Rookie Year: 1999
Location: Toronto, ON
Posts: 2,484
Tristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond repute
Re: Alternatives to Pinion and Spur Gears

Quote:
Originally Posted by Spirator View Post
At the present moment, I have an RS395, a pinion gear and a spur gear driving a 0.5 inch hex shaft. My issue with this is that pinion gears and spur gears are hard to source.

Is there any alternative to this? I've attached a picture of the current design.

I've considered polycord, but the joining kit costs $1200 here and we don't want to spend that much.
Friction rollers could be a poor man's geartrain (the slippage could even be an asset). There's always chain too (maybe plastic chain, because it's a bit easier to deal with than metal in small sizes). Vex parts, if available, offer a lot of options as well.

If you want to weld polycord, though, you can do it with an open flame, or a hot plate and some ingenuity. The kit is fine, but not necessary for most small jobs.

See here for more ideas.