Just started breakin in the engine at noon today before getting back to work.
After 20 minutes of flippin and sweatin, I got it to run the prime a few times.
It seems to flood easily but that's probably because I'm not used to it yet.
I must have lost 2 pounds today flippin the prop.
I'll try again tomorrow. Using brodaks 10-23 fuel

Would you guys use 1/2a fuel line or will the normal .35 fuel line do??

Also, do you all use fuel filters with these engines? 1/2a fuel filters??

Thanks,

-Dan

Here is a link to a discussion of the Brodak motor starting issue, no answers that I see though
http://www.rcgroups.com/forums/showthread.php?t=1804392

Hi Ray,

My question was a more general question which I am sure applies to the type of engine more than the make.
Those who have big mig, mv...

I got the engine to run a few minutes ago on regular size fuel line (.15 to .46) and a regular size fuel filter.
It's a little difficult to hold a needle setting. I'm assuming this is because its not broken in yet.

Thanks,

-Daniel

                      Our experience a few weeks ago was this on a APC 5x3 on 35% Sig  fuel.  Initial test was done with a Cox gray 5x3, I can say it didn't like that prop as it only yielded 15K. The APC is a much narrower bladed prop which thins out at the tips and it certainly improved rpm's on the ground. We never flew the engine so I can't say that this prop is the cat's meow. This was purely for fun and experimenting.  Now I know the first thing that someone will more than likely tell me is that the instructions recommend 10% fuel. I run high nitro in all of my 1/2A's period. I feel this is a high quality engine. It wasn't designed around the parameters of seeing high rpm's like some of the competition.   The crank fit was loosened slightly to assist in initially flipping the engine over. Later in the day, we were seeing 22K. Ken

                  Dan, although the engine is turning those rpm's I question on how many of those are useable rpm's or is it just beating air.  I take the APC and sand the blades a bit and radius the leading edge towards the tip. I never officially measured the prop. I'm quite sure that may make the prop slightly smaller than in stock form. I use these props for 1/2A combat. Like I said, I didn't fly the plane as we were strictly going for all out rpm's we could achieve. I highly doubt it would sustain that rpm on suction for any amount of time. All in all it was a neat experiment and I would certainly like to see what could be achieved with this engine. The Master Airscrew prop your using has quite a bit of blade area  and is loading the engine. Ken

I too wonder why guys like the high RPM and small tooth picks for props....

I can't speak for others here, but when I fly 1/2A, I like to fly balls to the wall freestyle, rather than precision stunt. Three second laps with paint peeling tight loops, and maneuvers that aren't official in any way, just making it up as I go along. That would be my reason for the 5" props and screaming RPMs. About 4 minures of controlled panic will get your circulation going.
And then there's combat, which requires pushing the little engines to astounding speeds, sometimes with even smaller props.

I couldn't agree more!

Jim

Haha, we might be out of our element here, Jim. I bet they'd like to see your Yaking Clown fly.

Rusty