There is a limited market for cut down motor plates with no motor mounts.
My
guess you will find less than five people willing to spend $250 to take
out
2 or 3 pounds out of a flying example.
We need things with a higher priority than water pumps. The 2nd gen and
3rd
gen engines will become more scarce as times goes on and the RX8 pump is
fine as is. Also there is a light weight low cost aluminum cartridge
already
available for the 2nd gen and 3rd gen pumps.
Now 15 pounds out of the gear box with a $1000 dollar saving is another
matter :)
Paul Lamar
Did you have Something specfic
In mind or were you just tossing out an ideal.
Clifton
I new light weight gear box design that takes the best features of the 30
pound Ross and improves upon them. It also takes advantage of the recent
drop in NC milling cost to lower the price and the weight. I am shopping
for
a supplier of some of the harder to make parts as we speak. It will bolt
to
Jeff's motor plate. Tracy's box is about 40 pounds.
Paul Lamar
--
How about a version with a hollow shaft oil fed constant speed unit? That
would sell. Marc Wiese
That would be something I would not be interesting in getting into right
now
due to the
weight of the CS props. One has to choose the largest market possible
when
one gambles
on a new product. If this one is successful in the market place well then
maybe a CS
version.
--
Paul Lamar
Paul,
Have you seen the Aerocomposites cs units?
http://www.aerocomposites.com/or
the MT, or Hoffman, for weight.....all are composite blade, oil fed
constant
speed units. Lighter weights. I've heard good reports from aerobatic (and
seaplane) pilots running some of them, esp the aerocomposite ones.
Marc Wiese
MT and Hoffman have electric versions as well.
Paul Lamar
Paul, others.
I have heard good things about Aero Composites but they are unwilling to
make a electric version.
This begs the question. Are electric C/S props adequate for non
acrobatic flying? If so it seems a shame to add the weight and
complexity of a belt driven prop governor, plus the hassles of the
hollow prop, shaft seals and hoses etc.
Doug in Japan.
Mark Steitle runs one so lets ask him. Mark how well does it work?
Paul Lamar
Paul,
Bobby Hughes and I are both running 3-blade M/T electric props and we're
both very happy with it. I get great takeoff & climb performance (6800 -
7200 rpm) and once at a safe altitude, I can dial it back for a more
economical cruise climb (6000 rpm), and finally to economy cruise
(5100-5200
engine rpm). The best feature is that I can change the prop pitch in
flight
if I want go fast.
Not having an adjustable prop would be like riding a centrifugal clutch
Cushman motor scooter, if you remember what those were like.
Mark S.
Mark,
Is you prop constant speed or electric in flight adjustable ? Are you flying
WOT all the time and regulating rpm with pitch ? This is how we flew a
Glastar with an electric NSI prop.
John
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