- Joined
- Nov 18, 2005
- Messages
- 922
OK guys, I've decided to turn my race bike into my road bike so I have a load of work to do, fitting lights etc, but the first thing I need to sort out is an alternator and belt drive.
The bike is an Atlas engine ( inclined forward like a Commando) in a slimline frame with a single row primary chain and AMC clutch/gearbox.
See photo:
The reason I want a belt drive is because although a single row primary chain is OK if you do short races and lube it every race, longer rides on the road would probably wear the chain out pretty quick.
I'll fit an alternator probably a Sparx unless anyone has any better suggestions.
My question is about the width of all these components. It seems that the width of my engine sprocket+spacer where the rotor used to be is about 65mm, but internet research indicates that a belt drive pulley is 37mm, the spacer 5mm and the rotor 35mm. That makes 77mm so I can't see how it will fit on the crank.
Is an Atlas crank shorter at that end than a Commando? The Commando had a triplex chain, so maybe that's the case.
The bike is an Atlas engine ( inclined forward like a Commando) in a slimline frame with a single row primary chain and AMC clutch/gearbox.
See photo:
The reason I want a belt drive is because although a single row primary chain is OK if you do short races and lube it every race, longer rides on the road would probably wear the chain out pretty quick.
I'll fit an alternator probably a Sparx unless anyone has any better suggestions.
My question is about the width of all these components. It seems that the width of my engine sprocket+spacer where the rotor used to be is about 65mm, but internet research indicates that a belt drive pulley is 37mm, the spacer 5mm and the rotor 35mm. That makes 77mm so I can't see how it will fit on the crank.
Is an Atlas crank shorter at that end than a Commando? The Commando had a triplex chain, so maybe that's the case.