Q for you bore n stoke boyz

[Paul Workman]

I've never understood the balancing act between the crank and the piston/rods. For example: Changing to lighter piston/rod configuration does what to the crank/piston-rod balance? Showing my ignorance (again) I always thought the counter balances on the crank considered the piston-rod weights too, and changing the piston-rod weight would upset the balance...NO?

TIA

P.

[Bob G]

Yes It does change the ballance , but the counter weightsare not 1to1 ratio . It is a percentage of the piston & rod weights .
Bob G

[flyin ryan]

For example: Changing to lighter piston/rod configuration does what to the crank/piston-rod balance? This would put the crank into an 'Over-balance' situation. Would need to take weight out of the counterweight(s) to compensate.

[tccrab]

It's all part of that "Magic" stuff that most all of know about but we take for granted because we have no idea how it's done.:dontknow:

TomC
"Crabs"

[Paul Workman]

It's all part of that "Magic" stuff that most all of know about but we take for granted because we have no idea how it's done.:dontknow:

TomC
"Crabs"

:iamwithst (but he ain't stooopid!)

The more I know, the more I know that I don't know...I think I'll stop learning about these "exotics" now (while I still think I know something!:mrgreen:)