Update...now it's a hybrid!

I posted this bike last year when it was all electric. Added gas but also wanted to keep the electric, and have it even more functional. Now has regenerative charging of the battery when running on gas, can run on gas, electric, pedal, or any combination. With both gas and electric I even have both front and rear wheel drive (only one rear wheel is driven). I really don't know if it would make it, but it should go pretty close to 55 or sixty. It turns 1560 rpm at 30 mph.

Worksman Mover 26" bike with rear box to hold the battery and my ice chest
Predator 212cc with Stage 1 improvements
Comet TAV2 torque converter
Custom jackshaft and sprockets/chains (shown in picture)
Front and rear lights, brake lights, turn signals
 

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Sidewinder Jerry

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I would have the tendency to ride it on gas all the time. Good job on the jack shaft set up, if you want, you can easily change gearing. With the TAV though there isn't a need. I've made a few exhaust systems using that screw together black pipe in the past, but ever since I bought my pipe bender it's more fun to bend a pipe.
The electric motor can be used on greenways and nature paths where a gas engine can't. The electric motor can also add assist to the gas engine when needed.
 

Chainlube

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The electric motor can be used on greenways and nature paths where a gas engine can't. The electric motor can also add assist to the gas engine when needed.
I have a race cart with a 212 on it, it weighs in at 260lbs, with me in it, it's just shy of 500lbs. It doesn't need any electrical assist.
 

scalewiz

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If my switch in is the regenerative charging position then as I ride on gas it recharges the battery. When the switch is in the normal position, no charging occurs, but when the brakes are applied the regenerative braking kicks in and slows the bike quickly. Really saves on brake pads. My electric throttle is a thumb throttle right next to the gas twist throttle. When taking off, I can not only rotate the gas throttle, but by extending my thumb and applying the electric throttle at the same time, the bike will really take off. Most vehicles behind me are not expecting it as I leave them in the dust. This dual motor operation will only operate properly when in the normal position. I quite often kill the gas motor and operate solely on electric. This allows me to be a little more legal if I put it off the road and onto the sidewalk or into the park; nobody looks at it like a gas powered vehicle.
 

darwin

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Didn't know V on OP's bike but this is an example. That 212cc motor could spin this with no problem to recharge the batts.
 

scalewiz

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Yep, it's got enough power. Realize that when recharging batteries you need to use the recommended voltage. Lithium batteries are rather specific about it. With a 12 volt alternator, you would need a boost converter to bump the 12 volts back up to the recommended battery recharge voltage. Even on my system, when recharging I must switch the display to show me battery volts. Then I can adjust my ground speed to charge the battery properly without overcharging or overvolting. I can also adjust the amount of regeneration from 1 to 5 to control the amount of power production (and corresponding power from the motor) to properly recharge my battery. I'm not sure if this method is more hassle, or to build a proper boost converter and battery charging circuit. With a lithium battery, it is a MUST to kill the charging when the battery reaches full charge.
 

Karl Snarl

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Yep, it's got enough power. Realize that when recharging batteries you need to use the recommended voltage. Lithium batteries are rather specific about it. With a 12 volt alternator, you would need a boost converter to bump the 12 volts back up to the recommended battery recharge voltage. Even on my system, when recharging I must switch the display to show me battery volts. Then I can adjust my ground speed to charge the battery properly without overcharging or overvolting. I can also adjust the amount of regeneration from 1 to 5 to control the amount of power production (and corresponding power from the motor) to properly recharge my battery. I'm not sure if this method is more hassle, or to build a proper boost converter and battery charging circuit. With a lithium battery, it is a MUST to kill the charging when the battery reaches full charge.
Why not just buy a buck boost converter lithium smart charge controller, instead of risking the batteries?
 

rawly old

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I posted this bike last year when it was all electric. Added gas but also wanted to keep the electric, and have it even more functional. Now has regenerative charging of the battery when running on gas, can run on gas, electric, pedal, or any combination. With both gas and electric I even have both front and rear wheel drive (only one rear wheel is driven). I really don't know if it would make it, but it should go pretty close to 55 or sixty. It turns 1560 rpm at 30 mph.

Worksman Mover 26" bike with rear box to hold the battery and my ice chest
Predator 212cc with Stage 1 improvements
Comet TAV2 torque converter
Custom jackshaft and sprockets/chains (shown in picture)
Front and rear lights, brake lights, turn signals
Just finished A hybrid too. Modified GEBE kit, PF-4000 tanaka with stock tank + 3 liter jerry can, & a 500w bafang front whi. kit.
Boocoo mileage & range/ will post pics as soon as I can take some
 
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