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Message
You've probably mentioned it before Rusty, but I can't remember, too much
message traffic. What parts is your engine built up from? How does your porting,
rotor weights, compression ratio, etc. compare to Tracy/Ed?
My engine
started as one of the new generator engines, which was basically an 87 turbo
block. I had Bruce convert it to 9.7 rotors, and port it, so the
engine is identical to Tracy's.
When
I built my new intake manifold, I initially had the runners too long, and lost
over 100 RPM. Shortening them back to the stock length, I got the power back. So
the short intake could be robbing some power.
For all
practical purposes, my current runners are about 50 inches
long. Primary and secondary come together almost immediately, then
run through about 30 inches of 1.75" aluminum tube. The TB is
a TWM, which has two throats, so each throat is connected to one
rotor. The input air to the TB comes from two separate SCEET tubes
that run from the bottom of one radiator duct to the throat of the
TB.
Rather than
flying today (I warned you this would happen), I'll be pulling off my cowl to do
a few tests. First, I'll replace the plugs, and see if static goes
up. Next, I'll disconnect the SCEET tubes at the TB, to eliminate that
length of tubing and try again. I'll also be finishing the bulkheads
that will block off the rear of the cowl cheeks, so it's unlikely that I'll have
time to fly, though there's a chance I'll sneak in a beach run later in the
afternoon.
Rusty (gotta
go)
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