6 replies to this topic

[Minja]

I'm thinking of building a bike engine Mini.

Since the cush drive in the rear wheel of the motorbike is no longer used when driving the diff in your rwd bike engined Mini and nothing else to in place to soften the shock loads on the motorbike transmission.

How does the motorbike transmission hold up?

Say the car will be used for autocross an tarmac with constant on-off throttle usage, will the shock loads on the bike transmission become an issue?

[OfMini&Men]

IMO bike engine'd mini's are nothing but pains, my mate has recently ditch it after going through 2 gear boxes and revesre giving up on the motor, so he's gone down the civic route much better but alot bigger.

but thats my 2p worth :)

[Minja]

What was the reason for damaging the gearboxes?
Which bike engine?

[Minja]

Does it mean that because the bike engine conversion doesn't use the cush drive anymore and nothing is done about it, that one needs to take it easy with these bike engine conversions?

I take it autocross is out of the question then for a bike engined car...

[scrapveiw]

Take a look at autograss cars , they don't seem to have too many problems with bike engines.

[Minja]

Do Autograss cars go on tarmac?

[R1mini]

The gearboxes in bikes are usually very strong but there are certain ones like the R1 which I wouldn't trust to take much abuse. I opened up my R1 and couldn't believe how small some of the gears where. The R1 gearbox used in a bike can fail so using it in even a light weight car would strain it too much I believe.

 

It all depends on which bike engine you use the cbr1000rr I believe is a very strong overall package, GSXR1000 is pretty good to

 

David