so, 10 weeks into waiting to get my bike back on the road (waiting for %*&^#$@! parts), I am now at loggerheads with a new problem: getting the crank balanced. I am in desperate need of the specs needed to balance the new crank to my parts (JE pistons and Carrillo rods). Does anyone know the balance factor (ie. front to rear cylinder) involved in balancing a 90-degree V-twin?

thanks in advance

 

Pm roger ditchfield on the other forum. He would know.

James

 

As Erik Marquez lightens flywheels (and states its not necessary to balance them afterward and has communicated with Roger), maybe he knows.

Erik?

 

I did, but for proprietary reasons he will not share his data. Hard to argue with that, it is his livelihood after all and his information has been earned the hard way. I wish I live closer so I could simply have him do it (without it resulting in ridiculous delays and soul-selling postage fees)....

Thankfully, my bud Jack Flash seems to have something up his sleeve so we'll see......

seeing as how I am no on my 3rd rebuild, I really wish I had just crated the engine and sent it to Roger the first time, I am sure it would still be running..... such is life when you hand your work over to incompetents......

 

Sorry no info.. What I know on the topic is I don't know enough... just that the flywheel cut and not rebalanced works.

I cant imagine any real shop that does balancing of motorcycle engine components and rotating assembly not knowing what to do.

Makes me wonder though.. Im contacting my preferred crank shop today and finding out if this is a concern of theirs as they are getting a crank from me at end of this month.