View Single Post
  #9   Spotlight this post!  
Unread 30-10-2003, 14:03
Joe Johnson's Avatar Unsung FIRST Hero
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: 2,633
Joe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond repute
bevel gears...

Berg sells miter gears that can be made to work with the EDU kit.

It will not be pretty but it can be done.

I recommend a 1 to 1 ratio with a relatively small diameter to keep "tilt" from disengaging your teeth ( like the pair M72N-1A for example).

This gear set is aluminum and has a 1/8 inch bore. You will have to make the hole square. To do that, I recommend the following broach from McMaster.com 3156A11 -- the problem is that it costs a bit more than I like -- but I have used it and they are beautiful for making EDU compatible square holes in aluminum parts).

Also, the pitch of these gears is a bit danty (72DP -- that means . You will likely have issues trying to get these gears to stay engaged reliably -- the teeth are only a little more than a half mm tall!)

To be honest, I suppose that for the most part, you could modify something from another toy set (Lego maybe) and have better success.

Good luck just the same.

Joe J.
Attached Thumbnails
Click image for larger version

Name:	broach.gif
Views:	121
Size:	37.7 KB
ID:	1573