Hey Guys,
I've got a Brillelli 46cc converted Poulan on mag ignition. It has run great up until today. We started her up and since she had been sitting for awhile, tweaked the hi and lo end. Transition was good and nose up was no different. Running a Bolly 20x10 prop and fresh gas. When I took off the first time the climb out was uneventful but after I banked and leveled off the power just drained down (no sputtering) and she died. Dead sticked her back and we re-adjusted the carb and really did a good run up before trying her again. Same thing happened, good climb out but when I banked and leveled off she died again. Any suggestions?

Thanks

Loopman

Can you tach it to see what RPM's you're getting? You should be around 7000-7500 peak to keep the engine in it's power band.

too lean, i always tweak mine a bit rich to compensate for the hot weather and nasty humidy. down here in florida. that might be your problem. try a touch to the high end and richen it up a tiny bit.

Its a long shot, but could it be a clunk problem?

I was thinking the same thing, or too lean as previously suggested. Do you recall just before the engine died whether the engine rpms increased or decreased? If the engine sagged just before dying, then I would lean towards the engine being too lean. If the rpms increased, it may have run out of fuel, so it's possible the fuel pickup line in the tank slipped off the copper tube.

-Ed B.

Thanks guys, I'll check the clunk, that's easy enough. If that's okay then I'll richen it up before the next flight test. The engine did not make any sputtering or increased rpm noise. It just sagged and died. Hope I can get this sorted out soon!

Loopman

A firend of mine had the exact same thing happen with his 45cc gasser, altho it wasnt a brillelli. It would idle all day long and on the ground transition great but once he took off , got into the air and banked, his engine quit like you cut the switch off. He pancaked it and once he got home pulled the tank, and the line to the klunk was split right past where it left the brass tubing, in turn sucking air and going lean and dying. Im not saying this is your problem, but you may want to take a look at that. Hope this helps,
John

Well, I looked at the clunk and it is okay so I guess it's a carbueration problem. I will take the carb apart and clean it thoroughly with carb cleaner. I will also try richening the hi end mixture.

Thanks

Loopman

I'd check the screen in the carb. It sounds like that may be blocked abit.