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HelicopterCentury Radikal G20-30 N640 Hawk Predator › PMax and CSpec: 2 shims?
09-02-2003 12:44 AM  14 years agoPost 1
sreuss

rrApprentice

Ontario, Canada

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Hi all,

Did anyone else find that two shims, rather than one per the instructions, made for a smoother gear mesh with the pmax and the OS cspec engine (8.14:1 gearing)?

I found that the overall alignment of the engine, start assy, pinion and main gear went from being good to being great with an extra shim (i.e. two in total).

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09-02-2003 12:48 AM  14 years agoPost 2
choppengruven

rrKey Veteran

Flagler County, FL USA

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When I built my P-Max back a few months ago, one shim was nearly perfect. Two shims was too much.

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09-02-2003 01:47 AM  14 years agoPost 3
Zapped

rrNovice

Pensacola, Florida

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One shim seemed right for me.

Phil

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09-02-2003 03:53 AM  14 years agoPost 4
gjestico

rrApprentice

Vancouver, B.C.

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Yes. I have 2 shims under each lug on my 8:18 ratio Pred. It needs a touch more, but 3 shims was too much. The supplied shims are .5MM , mine needs about another .25MM to be perfect. It is easy to sight the bottom of the clutch at the the clutch bell for alignment.

Greg

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HelicopterCentury Radikal G20-30 N640 Hawk Predator › PMax and CSpec: 2 shims?
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