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Unread 14-10-2015, 20:18
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Joe G. Joe G. is offline
Taking a few years (mostly) off
AKA: Josepher
no team (Formerly 1687, 5400)
Team Role: Mentor
 
Join Date: Sep 2006
Rookie Year: 2007
Location: Worcester, MA
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Re: Where to buy dog shifting parts?

Quote:
Originally Posted by SerpentEagle View Post
Does anyone now where I can buy shifting dogs (the part that locks onto the gear) other than from andymark?

Also, can anyone tell me if and how this axle could be machined (this is off of a WCP DS shifting gearbox):


I'm attempting to design a 2 speed gearbox for the first time, so any pointers would be appreciated.
You would need both a mill and a lathe the machine a stepped hex shaft like that. Start with a piece of hex stock (make sure it's the proper alloy!) the largest size required, clamp it to a flat surface, and sequentially face mill each edge down to the smaller size. The mill would also be used to put the slot in the shaft. Following this, a lathe would be used to round down the other end, bore the pin hole, and put the snap ring groove in.
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FIRST is not about doing what you can with what you know. It is about doing what you thought impossible, with what you were inspired to become.

2007-2010: Student, FRC 1687, Highlander Robotics
2012-2014: Technical Mentor, FRC 1687, Highlander Robotics
2015-2016: Lead Mentor, FRC 5400, Team WARP
2016-???: Volunteer and freelance mentor-for-hire

Last edited by Joe G. : 14-10-2015 at 20:22.