johnwigney(at)alltel.net
Guest
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 Posted: Fri Mar 31, 2006 7:47 am Post subject: More on constant speed props |
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Dear Europaphiles,
There has been quite a bit of correspondence lately with regard to
constant speed props. I have a Whirlwind hydraulic C/S prop which has
served me very well for 450+ hours. I have had this prop on my plane
from new after hearing Kim Prout say that it was the single biggest
improvement to his plane. I have no involvement with this company but I
can give a sincere testimonial. A few details :-
* See information at http://www.whirlwindaviation.com/series100.php.
Greg Anderson is the contact - he says current delivery timing is
~ 4 weeks.
* The prop is very light, 9.3 lbs. Engine always cranks easily on
cold starts.
* High quality spinner and mounting.
* Prop is designed for the Rotax 912/912S/914 installation. There is
a gear box shaft mod required for the oil feed to the prop.
* Hydraulic governor is very accurate and consistent.
* Price is not inexpensive but is excellent value at $3,995 plus
$1,275 for the governor.
* Excellent short field take off. Fully fine max speed is easily set
at 5,800 rpm.
* Easily set for whatever cruise RPM and manifold pressure are
desired. Excellent high speed performance - if I want to go at
full blast, I just dial in 5500 rpm and go full throttle.
* Whirlwind propellers are popular with the competitive aerobatic crowd.
* Since the governor occupies the pad which would normally mount a
vacuum pump, instrumentation must be electric only. This is not a
big problem if one uses low current draw items such as a DYNON
EFIS and LED nav/position lights.
Cheers, John
N262WF, mono XS, 912S
Mooresville, North Carolina
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