Bike Engine Prop Shaft

[Guest Turboz]

Hi guys after just finishing my first zero my brother wants me to build him one and insists on going bike engine as I have lots of spare engine's for my busa drag bike, however how do people connect the bike engine output shaft to the prop shaft. I've looked at lots of engine bay pics but just can't tell ?

[Guest 2b cruising]

I've only ever seen one and that was through a chain driven transfer box incorporating revers gear.

He told me it was expensive but not as expensive as the diff he used.

Edited May 4, 2016 by 2b cruising

[Guest Turboz]

I've seen chain driven radicals but that's because the engine's in the back next to the rear axel.

[Guest 2b cruising]

Do that to a zero and you would without doubt need sissy bars to keep the nose down.

Can't really steer a car with the front two wheels of the ground.

[theduck]

They use an adaptor that allows them to connect a propshaft

[Guest Turboz]

I've just read that you can weld a front chain ring / sprocket to the front end of the prop shaft but that sounds a bit of a bodge job ?

[Guest mcramsay]

Welding anything to a prop shaft needs some careful thought and balancing.

[andyparry]

I used one of these on mine http://www.hoverd.org/Tim/Fury/images/sprocket_adapter_01.jpg. Can't remember who I got it from but it was less than £60 8 years ago. Once you've got the engine in and hard mounted, get baileymorris to make you a new prop. You'll need to make sure you have a shock joint in the tube somewhere else you'll strip teeth off the gears as you going down through the box. You'll also need a baffle plate in the sump to stop oil surge. A bike radiator is not big enough, so you'll need some serious cooling on the front as you won't have the same airflow over the engine.

 

Hth

 

ANdy

[Guest Turboz]

Oh I didn't mean a DIY job but by a professional prop builder but still it doesn't seem right ?

[Guest Turboz]

That looks more like it, thanks mate.

 

Cooling shouldn't be a problem I'm using the same radiator as in my car a custom 5 row aluminum jobbie it keeps my s2000 turbo engine cool.

Edited May 5, 2016 by Turboz