Wednesday, October 8, 2008

The Coupler, Our Biggest Hurtle

How to mate the motor to the transmission and spend as little money as possible. Through more extensive research, we determined that we needed a coupler to connect the transmission to the motor, a mounting plate, and a spacer plate.

The mounting plate and spacer plate were easy to acquire at a local metal shop. We bought a 60/61 (tough) 15"X15"X1/2" plate of aluminum for under $50 for the mounting plate on the transmission bell housing. We have yet to buy the spacer plate. The reason being, we'd like to verify the distance between the motor shaft and transmission shaft after the coupler is acquired.

We explored a few different options on acquiring a coupler.

1. Buying a prefabricated coupler, mounting plate, and spacer plate ($1000+)
http://www.evparts.com/
2. Creating our own coupler through local machine shops (I was quoted a minimum of $600).
3.
Using a keyed sprocket which we would weld to a thick pipe and then weld to the clutch plate. All has to be accurate to .001" (too difficult if you're not a machinist).
http://www.surpluscenter.com/
4. Use a Lovejoy connector welded to the clutch plate. Again, we'd have to be accurate to .001" (too difficult)
http://www.drillspot.com/
5. Use an Atra-Flex coupling. (less than $200)
http://www.atra-flex.com/

We're going with either the Lovejoy connector or Atra-Flex coupler. These sound like the best and most inexpensive options for our beginner needs.

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