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LycomingEngines-List Digest: 4 Msgs - 11/16/07

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capmrp(at)cfu.net
Guest

Posted: Sat Nov 17, 2007 6:49 pm Post subject: LycomingEngines-List Digest: 4 Msgs - 11/16/07

Thanks Guys, for all of the input.

I mentioned that I have the procedure for clocking this prop.  I got it from

a rep at Hartzell who participated in the test process referred to here

which was done last Spring on a HRII.  They clocked the prop 60 degrees

against crank rotation so that it resides closer to 3-9 o'clock when #1

cylinder is TDC.  The result was a reduction of overall vibration by 83%

between 2500 rpm down to 2200 rpm while preserving maximum top end speed vs

that of an MT 3-blade.  I also spoke with two engine shops.  The procedures

mentioned by you guys was repeated by both shops.  The main caution is that

the bushing is square to the flange before pressing it into position and

that the pressing technique is the way to go (no tapping allowed).

Thanks again.

R/

Mike

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