> We have balanced them before.
>
> Assuming the shaft is made retaining the rear rotor journal, the keyway
> groove in the rear counterweight needs to be re-cut 180 degrees out to

put

> BOTH counterweights on the same side, then a bunch of weight is taken

out

> of
> both of them.
>
> Mazdatrix Inc.
> 2730 Gundry Ave.
> Signal Hill, Ca. 90755
> Phone: 562-426-7960
> Fax: 562-426-9646
> www.mazdatrix.com

Not a bad guess off the top of the head, but WRONG.

It's the front keyway that needs to be cut 180 degrees, if your retaining
the rear journal. It's it your taking the front journal and turning it 180
degrees and superimposing it on the rear journal.

Both  counterweights need to be on the opposite side of the eccentric

lobe.

Richard's right again - as there's no rocking couple a static balance will
get you in the ball park. Can't say how close it will be though.
George (down under)

Yep - you are right -- I knew it was something like that. "Senior
moment"? -- or vaguely recall that one of the ones we did (MANY years ago)
was some real oddball application (even more than some of the stuff you do)
where he retained the FRONT of the eccentric and therefore had to modify the
rear counterweight "thing" he built/machined.

Mazdatrix Inc.
2730 Gundry Ave.
Signal Hill, Ca. 90755
Phone: 562-426-7960
Fax: 562-426-9646
www.mazdatrix.com


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