Mike KSEE wrote:
>>I'm sure Mark will offer more helpful info than I'm able to . . . but
from what I've picked up over the years - mainly from Steve Bennett -
the HAPI cranks were cast. If this is an original HAPI crank, better to
get rid of it. <<
Certainly if it's cast, it's junk. You don't even use those in
performance car engines! A quick search showed this:
"The best and most sure method for recognizing a forged crank is to look
for the parting lines on the counterweights. A forged piece will have a
wide, irregular rough patch. A cast component (shown) will have a very
sharp, well-defined line where the mold was separated."
It may be that a Great Plains crank and hub assembly are
interchangeable. My concern would be does GPASC still sell those prop
hubs, bearings, and cranks (which I'm pretty sure are SCAT-forged with a
3 degree taper on them).
Indeed, Steve was the expert on what was interchangeable and what
wasn't. He left a pretty big hole in the VW aircraft arena. It may be
that Joe Horvath at Revmaster would know also, or Revmaster's hub/crank
may be interchangeable.
Mark Langford
m...@n56ml.com
http://www.n56ml.com
Huntsville, AL
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