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JDH: CB750 Conversion - Out with the old!
Submitted by jdh2550_1 on Sun, 10/14/2007 - 14:42
A big thank you to Jason and Jennifer! I picked up Jennifer's 1973 CB-750 this weekend - after a decade of no use they decided it was time to say goodbye. I promised to ride it back under electric power - but not for a while yet!
This weekend was spent stripping down the bike. It went remarkably easily - I mean I didn't even skin any knuckles! Getting the motor out was the biggest challenge but as of 3pm this afternoon the bike lost the last of it's old, loud, smelly, inefficient, oil burning, carbon dioxide belching parts. Know anyone who needs any CB-750 engine parts? Craig's list here I come...
Now that the bike is stripped down I want to weigh it and start mocking up cardboard components (batteries, motor, controller) and figure out placement. My goal is 60-65mph top speed and a 50 mile range. Not sure how close I'll get - but that's the goal.
My current plan is a 72V system. I was thinking of going with a Perm 132 motor - but Andrew has got me considering an ADC motor. The ADC's aren't as efficient or as high powered as the Perm - but they are much more robust. If I go up to 96V I could drop the amperage further - but I just don't think I can squeeze on eight batteries of sufficient Ah.
So far so good - but of course this was the easy part...
Next up: Doing some math (should make Mum proud - she's a retired math teacher!)