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Engines-List Digest: 9 Msgs - 03/21/06

 
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CardinalNSB(at)aol.com
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PostPosted: Wed Mar 22, 2006 5:58 am    Post subject: Engines-List Digest: 9 Msgs - 03/21/06 Reply with quote

Dan Hooper,

Would it be appropriate if you posted your private replies here on the
engine balancing question, while deleting any personally identifiable information?
For those who replied privately to Dan, would you mind if he posted the
gist of the replies for all of us to read as long as it was not identifiable?

An acquaintance of mine built/raced largest class motorcycles
professionally, worked in the engine shop of one of the nationally well known aircraft
rebuilders (saw engines coming in, built them, dealt with warranty problems,
etc.), currently builds all his own stuff, and his advice is that at the rpm
levels we are at with Lycoming 180's and for regular non-aerobatic flying, that
the "regular" (whatever that means, probably factory) limits are good enough.
He just laughed when I started talking about balancing combustion chamber
cc, rod length, etc.

On the other hand, an engineer at Powerflow told me that in order to get the
best out of their exhaust, to check the cam because the factory limits are
so loose some don't get the scavenging done even though within factory specs.
Skip Simpson


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