Keith Holm wrote:
Hello Don,
My apologies for the delay in getting back to
you. Thursday and Friday
found us busy performing a vibration analysis on
a 376HP turbo charged 20B.
We will have to wait for the data to be
analyzed, but harmful resonant
frequencies did not appear to be a problem
within the operating range of
this engine (1-6000rpm). If the final word is
favorable we will begin
selling our drive for use with the 20B.
The Mt propeller used with our 215hp engine
comes close to $10,000, plus
crating and shipping charges. This price
includes the Kevlar spinner,
wiring harness, and control unit (prop
governor). Mt has recently updated
the blade design for tractor applications, and
claim increased efficiency.
The blade design used on the Velocity has been
very successful, and I have
heard of no plans for a change there. If you
would forward me the expected
output of your 20B I would be happy to quote a
propeller to absorb that HP
level.
Our two Velocity customers have both opted for
the Mt. One propeller has
been installed, and it has proven to be much
smoother that the two blade
wood prop he previously ran.
Feel free to call or e-mail me with further
questions. (715) 294-2557
keith@powersportaviation.com
Best Regards,
Keith Holm
Powersport Aviation