Can you put a set of A motor wheels in a B motor? Was thinking by doing that it would eliminate the countershaft and have less rotating mass like an A motor and have a higher redline. Beside shaking more, is then any other draw backs? I put an A motor in a hardtail frame and solid mounted it, it didn't shake as bad as I thought it would. That was almost 10 years ago (a friends bike) and he hasn't had an issue with it being solid mounted as of yet. Any input?

 

No.
Scott

 

LoL, why not????

 

Because he said so!

 

Lol, not trying to be smart but if I never tried to do something just because people told me no, I would have went to collage, got a good job, maried that cute girl with the rich parents.... hay waight a min, maybe thats were my life went wrong, LoL! For real tho, no doesn't help me understand why it wont work and I'm fine if it wont work but would love to know what the problem is.

 

I know. I was just bieng a smart ***. Wouldnt mind knowing too. Cant say id want to ditch my balancers though.

 

You can take the balance cams out of a TCb motor. Stupid idea but you can. The flywheel is the crank and alternator rotor. Sort of like having a 1/8" longer *****. What it's going to help. There is a oil passage way that will need blocked also. If you need it I can post it.

 

Please explain what countershaft you think would be eliminated. If you are referring to the balancer assembly, why not just remove it and you won't have to swap cranks? If you have ever ridden a softail with the balancers removed, you most likely wouldn't do it. Furthermore and FYI, there are guys running the B motors in drag bikes, with balancers, to 7200rpms.

AFAIK, the crank assemblys are the same with the difference being the B crank has the balancer sprocket pressed on the pinion shaft. However, that doesn't necessarily mean they are interchangeable. The balancer sprocket has a flange that rides in the pinion side case and I don't believe the A case will accomodate the counterbalance sprocket flange.

 

Ok, but wouldn't the A motor flywheels be balanced to run without the balance shaft and there for be better to use then just ditching the the balance shaft on a B motor?

Why is deletteing the balance shaft a stupid idea? Less rotating mass would = faster revs, weight saveings, by deletteing the balance shaft, doesn't that alow the motor to have a higher redline? If that's true it sounds good to me.

Hay an 1/8 might not seem like much but put about 9 of those 1/8"s togheter and that like. . . . . . . . . a 15 inches I think.

A pic would be cool, is that a passage to go to oil the balance shaft? SoOo does that mean that oiling to the rest of the engine would incress once the oil passage is pluged? If so I might need some bigger boxers!

 

Yes I'm talking about the balancer assembly. Like posted above I just figured the A motor's crank would be balanced diffrent (to run without the balancer assembly) then the B motor so it would be a beter choice then just delletteing the assembly with the B crank

I never have but I have ridden a A motor solid mounted and it wasn't nearly as bad as I thought it would have been and I honestly am alittle dissapointed in how little my B motor shakes . . . . in a weird kind of way

I know but I thought you would have to upgrade the chain and tensioner assembly for the balance shaft to rev higher. Kind of why I keep going back to an A crank and deletting the balance assembly.

Me too, that's why I posted to ask the experts

Not trying to put a B crank in a A motor just press the sprocket on an A crank and put it in a B motor

Thanks for the info man!