Flywheel - to balance or not to balance? This is the question

[Micha]

I know that during the motorcycle production, this wheel was balanced.
The question is, today, after about 70 years, should I invest time and money and find someone who knows how to test and true it?
Or is it an unnecessary action?
Have any of you ever done this before?

[weh8127]

Based no my experience with an R75/5 where we balanced the piston and rod assemblies with each other as well as the fly wheel I can tell you that it does make a noticable difference in smooth running. However, that work is easier on a /5 than it is on a /2, and considering the sedate around town use the bike gets these days, I don't think I'd bother again. My R60/2 has new 1st over pistons with no special attention to balance and runs just fine. Unless you're doing something exotic like building a vintage racer or something, or if there is an obvious problem, I think flywheel work is overkill.

Bill Husted
Barre, MA

[Micha]

Thanks Bill.

[jwonder]

They are done at the factory and unless something happens to take metal off the flywheel I would say no. I have not balanced any of mine.