Chris,
Where are you located? ?I sent you an email about some VW engines I have that
you might be interested in..
Thanks,
RonSt. Louis, MO
On Thursday, January 29, 2015 1:35 PM, Chris Prata via KRnet <krnet at
list.krnet.org> wrote:
Answered some of my own question with this article on the original (which I
had seen before, and forgot about). 1200cc, 310lb empty weight, 50x38 prop, 130
cruise, 650FPM climb. The article states that 'almost half the empty weight' is
engine. That's a light VW then! The original specs (except the retracts, if it
had them) are LSA compliant. I don't like the climb rate. But a little more
engine size and a climb prop would keep the speed under 138MPH IAS and give a
stronger climb, if LSA is desired.? The artyicle remarks on the piano hinges, I
wonder if that ever became an issue (will have to look at the old newsletters
for that).
Jack Cox article 1973:It has a span of 17 feet 2 inches, the length is 12 feet
6 inches, and it only weighs 310 pounds...almost half of which is the VW engine
and prop!
He reports his creation is easy to fly and has very good performance on such a
tiny engine (36 hp). With a 50 x 38 prop the take-off run is only about 150
feet and the climb rate is 650 fpm. Cruise speed is 130 mph and the thick RAF
48 airfoil stalls at a low 42 mph.
The U-control model airplane bell cranks used in the trim tab system jolted a
few people. Ken, a Douglas design engineer for many years, says the loads on
the tabs are so light that the model parts are adequate.
Others have looked askance at the aluminum hinges for the rudder and elevator.
While strong enough, they undoubtedly will need frequent inspection for signs
of excess wear. There are those who wonder about extensive use of PS foam but
perhaps the best evidence of the strength of the KR-1 is the fact that in an
early test flight, Ken had a power failure and had to land in an unimproved
field. The little landing gear collapsed, but the airframe, foam and all, came
through like it was made of cast iron. Finally, the size of the KR-1 will
necessarily limit it to persons of average size...but that can be said of a lot
of homebuilts.
In summary, we think Ken Rand's KR-1 was one of the really significant
homebuilts at Oshkosh '72. The airplane itself is already being built in great
numbers ... the $500 total cost of the prototype and the prospect of a short
construction period are highly motivating
??? ??? ??? ? ??? ??? ?
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