Some more photos of the Boxer Piaggio
At the current moment, I have the ICE engine out and the Razor motor in and wired up. Using a small hub on the 500 watt motor, I'm getting about 5-8mph and not nearly enough power to make it up hills. Fortunately, this was designed as a moped and I can pedal assist whenever I need to. Also, the centrifigual clutch means I can't stall out the motor.
The problem is that I don't have enough power, the motor is running very hot (70 C after 10 minutes runtime), and the rinky dink batteries I have now won't give me enough distance.
As mentioned above, I've ordered an HXT outrunner motor from Hong Kong (per Scott @ Endless-Sphere's experience) and will wire it in once it arrives. I'm hoping to be able to go 30 mph on straightaways if I can with larger SLA batteries on it.
This is my very high-tech throttle control. The Rocket controller is not speed adjustable, you just have to short two wires. I short one pair and turn on the bike using the mini-headphone jack on the left (aka: "the key") and then turn on the motor using the switch on the right. I avoided doing anything nicer as the HXT outrunner + ESC that I'm using in Phase 2 will be an entirely different control system.
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Re: Some more photos of the Boxer Piaggio
I hooked up a Doc Wattson today to get some specs on my current electrical usage using the Razor Pocket Rocket motor.
At "stall" peak motor usage (the motor won't actually stall as I have a centrifugal clutch on it), the max Amps are 20 amps and the max wattage is 490 watts.
More data to follow as I do some more test runs. But what this is telling me is that I need about twice as much power to go the 20mph that I want this thing to go at. So 40 amps / 1000 watts -- which is what Grandpa Chas has been saying all along.
More likely, I'm going to go to 36 volts and 30 amps, though, to save on heat wastage.
Working on a Piaggio Boxer (mo-ped) EV conversion: http://gpsy.com/ev