Tony,
If it is the guy that I think you are talking about. This is his link
http://members.iquest.net/~aca/index.htm.

His work is rather hardcoe I
must say. His kit is the one that I have been thinking of using for my
bird.

Jared Humphrey
------------
That LP1 is quite a piece of work - beautifully done.  My first thought was
too bad he didn't design it around turbo 20B so he could get a better cowl
shape up front.  I'm sure they've done the math, but with that heavy engine
that far forward, and the passengers and fuel basically at the C.O.L. of the
wing, there must be a significant induced drag on the horizontal stabilizer
keeping the nose up.

Al

Good workmanship is not always good engineering.

-----------------------------------

The guy is obviously a fabulous fabricator and mold maker but apparently he
is very naive when it comes to airplanes and engines. Note the PSRU ratio
for example at 1.385:1. All the Chev V8 engines and horse powers he quotes
are in the range of 4400 to 6500 RPM. Most LS-x engines have cast iron crankshafts
and powdered metal rods. This leaves the impression that any one LS V8 engine
is just as good as any other one. Nothing could be further
from the truth. The Corvette LS-x run at Lemans probably cost GM $100,000
each to build with aircraft quality forged 4340 moving parts everywhere
and custom cast blocks and heads. I have been there and done that.

400 to 500 HP is going to require an 80 inch diameter four blade
prop roughly. 80 inches dia. is 21 feet circumference at 2400 RPM
that is 840 feet per second tip speed. Speed of sound at sea level
is 1116 feet per second. Therefor the tips are going .75 Mach at
2400 RPM which is about near the speed limit for a prop tip.

2400 prop RPM times 1.385 PSRU ratio is 3324 engine RPM. Classic!
Needless to say you are not going to make 400 HP at 3324 RPM
unless you boost the hell out of the engine. In that case you
have a really big hand grenade on your hands. Windowed
blocks are not far behind.

He quotes 485 ft pounds of torque at 4400 RPM or 406 HP.
For awhile depending on the material the internal
parts are made of. In a Corvette this is very occasionally for
a fraction of a second. The Corvette engine is probably the
lightest duty piston engine in the automotive world.
It is installed in a 3000 pound car with low frontal area
and good streamlining. He also quotes 385 foot pounds at 1600
RPM or 117 HP which is totally irrelevant to aircraft use and
hints at a lack of understanding on what makes airplanes fly.

Also it was mentioned that the wings have no ribs. Good luck.
Honey comb carbon fiber skins or no honey comb carbon fiber skins
no ribs are dangerous.

What really runs the red flag up is the investment opportunities.

"I have studied the 'Deposit into escrow' system and feel that this system
wouldn't work for this company's unique approach."

snips...

"This 6% you save as final payment reduction is non-taxable compared to
a stock purchase with profit. This ends up with a net yield of 7.32%."

Unlike the stock market there is no SEC looking over these guys shoulders.

Very slick web site. It all sounds so wonderful.

Paul Lamar ...No rotor no motor.

---------------------------------------------

Quote from the LP-1 forum:

Re: turbocalcs

Initial feedback from our new LS1 powered Pawnee is that it is using
40 liters an hour  towing flat out full throttle to top of climb, (4000rpm)
then idle to the ground incl. ground taxiing. (no turbo)

Phil

10.5 GPH. 63 pounds per hour  at .45 BSFC 140 HP!
Giving them the extreme benefit of the doubt and a
.4 BSFC the HP would be 157 HP. OK so it climbs
for 10 minutes and glides for one. 70 pounds per hour
or 155 HP at .45 BSFC.

Paul Lamar

---------------------------------------------

Very interesting with the racing turbos being so much lighter. Never
thought about it. Robinson was seeing an SFC of around .375 in closed
loop cruise at 230hp and 3400rpm. If this SFC can be maintained at
300hp, it would suggest fuel flows of around 19 gallons/ hr. on the LS1.

Unadulterated BS. So now the great god Chevrolet has developed
a gas engine with the BSFC of a diesel ROFL
Why does my sport ute get 12 MPG? Still ROFL

These guys are in a dream world.

Paul Lamar ...No rotor no motor.

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