6400 RPM with a Zinger 22 x 10 and 1 gallon of fuel through it. Excellent starting hot or cold. Hovers a 16.5 pound Midwest Extra at half throttle.

Standard exhaust on your or are you using canisters or pipes at all?

I have the same prop and mine does 7200 right out of the box. It sounds like you are way rich. It should rip that prop. I get your RPM out of a Menz 24x8 and it is a TON bigger than the Zinger. I hover at just over half on a 18lb. Edge and have great pullout.

Norman Ross Jr.

mine has a gallon thur it......turns a menz S 22-10 @ 6700 pitts muffler

I'm getting 6700 on a Menz 24 x 8 with the tuned muffler, first run on new engine.

DA-50 with stock muffler, right out of the box, turned my Mejzlik 22 x 10 at 7300. Only 3/4 gallon through it right now. Will be interesting to see how many R's it picks up when broke in. Temp was about 85 degrees, and I'm at 450' above sea level.

hey guys got wildhare extra300sp.w\da50 and i just put a 24x8 menz..o my god.what a diff from a master 22x10 for the break in..
on the ground my da is running 6300-6400...
but in the air on a 45degree up line its putting out almost 8000rpm...vert its abbout 7200-7500.
i was told do not wot on down lines..it might rip the motor off..top ind.air speed is 80mph..
heres a graph of rpm on 2.1\2 flights..

I'm also getting 6,400 on 22X10 Zingers after 1-1/2 gallons of 32:1 Lawnboy. 950 ft elevation.

I'm a little disappointed.

Both engines are running clean, and I hate to push the limits on lean since they're on a P-38 and engine-out can be a real disasster.



mt

Something isn't right. I'm on my 6th gallon now and mine is turning the Mejzlik 22 x 10 at 7500 rpm. Temp was 75 degrees @ 450 ft elevation, 50:1 Stihl oil.

can't be right temp.mine is running 180-220maxtemp at base of head..
7500 is good on ground but sonds like your lean.on uplines alot of decell..then richen top.everyone say you get 1000 more rpm in air..

I checked the head several times and in several places. (Don't know if I've checked per say the base of the head though) I thought is was to cool also, but I've used this same infered gun to check electric motors that were over 200, and the DA is no where near that hot. Not lean on vertical runs at all. Can be TR'ing for a minute or so, go to full throttle till I can't see it anymore and it never sags.

What are you guys getting for a idle RPM??? Please include the prop and amount of fuel through it.

Thanks,

Norman Ross Jr.

I've only checked the idle once or twice, and it was around 2,000 rpm I believe. It's kind of touchy, I hit a spot where one beap on the trim lever really changes the idle speed. I've gone into the TX and reduced the movement on the trim lever which helped some, but I'm always just a bit too high, or two low to where it sounds like it wants to die. This is only on landing. Seems like while flying, the air keeps the prop free wheeling enough to where it won't die. I'm running a Mejzlik 22 x 10 and have 6 gal. through it.