Part of your problem is that filter for sure. Way too small. Fly with out it and
    report back. Also build a cold air box and a snorkel scoop. You will be amazed.

    Paul Lamar

Paul, First congratulations on becoming airborne! Second; I totally agree
with Paul L that your air filter is restrictive. It would be small for a 1 liter
piston engine running wide open. If you must have a filter, (I'm not against
that) you need one about 4 times bigger to prevent a restriction. As
Paul mentioned try running without it. Do a run up to full throttle and
if it continues to pull beyond 1/2 throttle you won't even have to fly it
to know that is the problem.
Bill Jepson

Perry Mick wrote:

That was my problem on the first couple flights. Removed the air filter
and gained 2-3 inches of manifold pressure, and have never used a filter
since.

I have my 5 hour test period flown off now with the new prop/rd1b.

Perry

 
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