Peter L. Peres email (remove spam text)
On Wed, 28 Oct 1998, Sean Breheny wrote:
> At 01:37 PM 10/28/98 -0500, you wrote:
> >>Why didn't you say so ;) Is it going to be wet ? If so, a twin plastic
> >Not while I'm balancing it. It's for a dynamic balancer along the lines of
> >what is used in full-size cars. I'm sure some heli guys will like it.
> What does balance have to do with RPM? Please enlighten me! <G> It would
> seem to me that prop imbalance causes the engine to wobble, but doesn't
> significantly change the RPM.
Unbalanced devices cause vibration in the structure at various rpms. This
can be bad enough to make things fall apart. So one reason for balancing
is to get rid of the worst vibration points and to learn the others so as
not to run the boat on one of them and have it come back with a 1mm play
in the prop bearing and without the keel (if used).
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