I have a Supertigre .34 in my Kyosho Concept 30 SR-X. i have been haveing a problem with it lately i cant seem to fighure out. It starts and runs fine, but when I set the heli down after a a few minutes of flight or hovering when i advance the throttle it quits. I am using a OS #9 plug and Wildcat 15% Heli fuel its new fuel and it was doing the same before i bought new fuel and changed plugs. The engine runs fine with lots of power and normal smoke trails, it idles fine. it only does this after running for a while.
I kinda scared to try any manuevers requiring lots of throttle inputs as I'm afraid it may quit on me.... ie autos.
I messed around with the needle setting on hi and low ends (small adjustments) but cant seem to solve the problem.


Any suggestions. and i dont need usualy trash the engine and go to another brand stuff. this engine has been loked after since i bought it. It has just started doing this. I was thinking it may be letting to much fuel in on throttle advancd and cooling the plug.

Pete

I would guess it is running rich try leaning the low speed needle a couple of clicks
first dosn't make a OS#9 you must mean a OS#8 no problem there it is a good plug

Yeah fat fingers hit the wrong key. It's an 8. I'll try to adjust the low a little more.

thanks,

Pete

just a quick note to say it was the low end needle valve setting. I tweeked it a little this weekend and had a great day of flying no engine stutters or stops.

Thanks windspiel




Pete

I think the OS8 is the wrong plug for this engine, reason being is they are two short once installed are not level with the combustion chamber. Super Tigre do there own range of plugs (Safalero) which i found works pretty good, these are long reach plugs. Have you always used the Helimix 15, i did not think the Tigres liked that much nitro in them.