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Date: Wed, 09 Jan 2002 13:58:33 -0500
To: lancair.list@olsusa.com
From: Paul Kapcin <pkapcin@olsusa.com>
Subject: V-8 engines for IV's 
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          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> 
>>
Mailed for:  Epijk@aol.com

   In a message dated 1/6/2002 12:55:20 PM Pacific Standard Time,
             gwbraly@gami.com writes:

<<<The resulting peak torsional loading on the crank and structures are 
serious engineering challenges for the prop and for any reduction gear 
box  connected to a prop....>>>

Peak torsional loading is certainly an issue for the engine subsystem, but 
if the coupling between the engine and PSRU is done properly, the 
torsional  excitation applied to the PSRU drive gear can be made to 
virtually disappear. That level of attenuation also provides the prop with 
a turbine-like vibration environment.
             For how, see:      http://www.epi-eng.com/PSRU_Tech.htm
Jack Kane


>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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Please send your photos and drawings to marvkaye@olsusa.com.
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