New Sensenich prop planform seen at Oshkosh this year I think it was
influenced by a Paul Lipps design flown on a Reno racer bi plane a
few years ago.

Paul Lipps died about 5 years ago.

This is a ground adjustable blade I recommend.

Paul Lamar

Paul, what price are they? Neil.


I don't know but it will be high :-) I can't get over to that booth
again as I have to leave today. It is over a mile away from where I
am.

Paul Lamar


I talked to a guy there and he had no interest in hearing about a 250hp
home-built engine and a ground adjustable. Maybe someone else got more
info out of them?

Right now, I'm leaning towards the Catto fixed prop. Will send the girls
my info and see what kind of prop design they come back with. Bruce
Hammer was in the booth, and recently went to a 3-blade because his
2-blade was slipping in the air too much over 200kt.

- Matt Boiteau



Your chances of getting it right with a fixed pitch prop are very low.
We have 18 years experience with about 100 builders.
Go for ground adjustable.

Paul Lamar


BTW Matt,
Large corps like sensennich don't hire engineers to man the booths
at OshKosh. Your chances of talking to an engineer are about
as good as getting the pitch right the first time?

All they know is a given Ramp Vermin with a given Lyc :-)

I am not entirely happy with the Cato we have the TTC.

Paul Lamar

Mat,  You did enquire re a prop for a 13B.  I am currently running a
Price prop 70 inch by 90 inch pitch.  Tried many props over the years
and this matched to the 3.17 ratio g /box seems a great fit.  Full noise
static it is 7000 RPM which will climb to nearly 8000 in flight. Craig
Catto refused to sell me a prop many years back as he claimed to have 2
props that were returned that were not a good match.  I offered to buy
one if it matched my engine, but then he "couldn't" find it to send me.
I can only guess why?

Neil. Unger




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