Hey all, got a thunder tiger .46. went to fly today and wouldnt keep running at full throttle. Seemed to run out of fuel, when i come back down to idle it would clear up and i could throttle up but than would die down again. Tried richening up mixture but didnt help. Temp was only 22 degrees could it be freezing up carb. Have flown at 30 degrees and ran fine.

Could be or moisture in your pressure line freezing up would cause the same problem.
Clear both fuel lines. Check for pin holes.
Clean the nipple on your muffler.
Another thought. Try a hotter glow plug? Full throttle will pump that cold fuel into the cylinder faster?

May sound weird but it seemed to have almost full throttle at about half than the more i went it would bog down. When carb is at full throttle is throat completely open or is barrell still partially closed? I guess what I'm saying is it possible the linkage is opening it to much and giving it to much air mixture?

When at full throttle the carb is all the way open. Your carb has a stop that will not allow your pushrod to open it any farther than full throttle.

Austin

Thats what I figured cause I havent changed anything and it ran full throttle before with transmitter at full stick. Just thought maybe a linkage either slipped or who knows. Shot in the dark.

sounds like it could also be the carb oring not seating, that rubber gets really hard when it is below freezing. I have had similar problems with the orings.It doesn’t get that cold where I live here on the mid east coast I cant comment on moisture freezing but that sounds plausible also.

22 degrees is cold! Your engine is probably not able to maintain operating temps at that cold ambient temperature, especially when it's in flight. Wrap a little aluminum foil around the head (and secure it) to give it a little "jacket" to help retain some heat. Anyone serious enough to fly in 22 degrees temp deserves some good flight time! Good luck.

Sounds to me like a blockage in the high speed needle or the spray bar. Flush fuel backwards through the needle valve, and pull out the carb barrel and the fuel nipple. Clear out all the fuel pathways. I've seen this behavior on my TT Pro 46, and when I cleared things out, I found a very small piece of plastic that had come from the fuel tank. Once it was cleaned out, the engine returned to its normal reliable self.

Brad