Back in the REAL old days, we had alcohol tanks in the DC-4's, but not for
water meth, for the props. Lessee - those REAL old days were back in 1985 -
the last millennium.

But back to the subject at hand - shooting nitrous into a Lycoming presents
its engineering challenges, I suppose there are other methods of increasing
acceleration at takeoff. At Sugarbush they do a modified angle takeoff roll,
the geometry of that seemes to increase the initial tow speed, very
slightly. (The towplane is on the main runway - the glider in the grass to
the right , aft of the towplane. The glider is angled towards the runway anf
rolls up onto the runway during the takeoff roll.

Jim

"Joseph L. Hyde" wrote in message
.. .
"BACK IN THE OLD DAYS" Hey I've flown planes recently using water
meth.....rolls dart and garretts.....oh wait that has been over 20 years
ago....never mind.....






"Jim Phoenix" wrote in message
...
Back in the old days water-meth worked pretty well, same basic effect. I
think Metros still use it, at least they did 10 years ago. Handy in the
Convair 580's as well - like, they needed more horsepower?

You just needed to be careful not to run out of water-meth at the wrong
time.

Jim

"Jason Payne" wrote in message
...
Just a thought. Wanted to see what you guys thought. I know that FAA
aproval would never happen, but seems like a good idea to me.

You could easily and safely run a 100hp shot of NO2 for the first
10-15
seconds of a takeoff roll in an 0-470 or similar motor, and get to 100
feet
and 65 knots a lot quicker than without, increasing safety margins.

NO2 is especially nice in a heat soaked motor because the shot cools
the
intake air a good 30-50 degrees...

From being in a ASH-25 at a full 750 kilos on a hot Uvalde day that
another
100 hp would really help getting off the ground if you are not behind
a
big
motor like Scratch.