.I'm hesitant to post here, but for the sake of a counter point, information, and risk of being flamed, I have to post...

Over the years, I have had great luck with K&B, Fox, Super Tiger, O.S. and MDS but have had no luck with Thunder Tiger engines. I have owned two Thunder Tiger .39 pro's which broke two connector rods in two separate engines. This happened in my Thunder Tiger Raptor running less than three tanks in each.

I eventually went with an O.S . . 37 and have run over four gallons of fuel through the engine and it still runs like brand new. I have an OS .46 in my Goldberg Cub that is 15 years old and just flew it twice last night, the engine has never been worked on. I have another O.S . . 25 in my Sig Kobra that is 20 years old and still runs great.

As far as customer support, Thunder Tiger would not repair either engine and faulted me for improper tuning, (too lean). When I set the engine up throttle response was good, there was allot of smoke, and cylinder head temp was good 160d. I get it, but I will never waist money on another TT engine, and have since given both engines away.

Pay a little now or pay allot later. Just my experience and I guess it may be just the TT helo engines, but I know from previous posts others have had similar problems with the same engine as well.

Sorry about looking like I'm bashing Thunder Tiger (I love my Rappy) but I'm just speaking of my experience.

Steve