alternate alternator

ando said:

Has anyone adapted a jap bike alternator to a Commando. I was hoping for 250W to 300W output and crankshaft mounted, similar to the standard mounting. thanks
ando

Click to expand...

comnoz said:

ando said:

Has anyone adapted a jap bike alternator to a Commando. I was hoping for 250W to 300W output and crankshaft mounted, similar to the standard mounting. thanks
ando

Click to expand...

When I was designing my fuel injection setup I needed more power to run the datalogging equipment on my bike. I mounted an alternator from an Excelsior Henderson on the end of the crankshaft. It is close to the same size as the Lucas but puts out 450 watts. It uses an external rotor so a mounting plate and an adapter for the end of the crank needed to be designed. Unfortunately the Excelsior Henderson alternator is no longer available but I suspect with some research something similar could be found. {Ducati}
I seldom use the datalogging equipment now but the alternator is great. With 3 HID headlamps and a heated vest and gloves the voltage stays at 14.5 volts even at idle. The alternator only pulls the power needed to maintain the voltage at 14.5. If the electrical load is lowered then the alternator pulls no more power than a stock alternator. Actually it is probably less. The original alternator uses a shunt type regulator so it runs at full load all the time and the excess power [if there is any] is wasted heating the footpeg mounts. Jim

Click to expand...

jeffdavison said:

do I sense a kit in tht offing?



JD

comnoz said:

ando said:

Has anyone adapted a jap bike alternator to a Commando. I was hoping for 250W to 300W output and crankshaft mounted, similar to the standard mounting. thanks
ando

Click to expand...

When I was designing my fuel injection setup I needed more power to run the datalogging equipment on my bike. I mounted an alternator from an Excelsior Henderson on the end of the crankshaft. It is close to the same size as the Lucas but puts out 450 watts. It uses an external rotor so a mounting plate and an adapter for the end of the crank needed to be designed. Unfortunately the Excelsior Henderson alternator is no longer available but I suspect with some research something similar could be found. {Ducati}
I seldom use the datalogging equipment now but the alternator is great. With 3 HID headlamps and a heated vest and gloves the voltage stays at 14.5 volts even at idle. The alternator only pulls the power needed to maintain the voltage at 14.5. If the electrical load is lowered then the alternator pulls no more power than a stock alternator. Actually it is probably less. The original alternator uses a shunt type regulator so it runs at full load all the time and the excess power [if there is any] is wasted heating the footpeg mounts. Jim

Click to expand...

Click to expand...