engine problem: TT gp07
 

Im a beginner with a mini-telemaster with a thunder tiger gp07 engine. I have finished building it and the engine would not start. I think the engine is fine but I have made an guess that the fuel line is not pressured enough or the gas tank is not positioned in the right place. As for the gas tank, it is in the front end of the plane on the bottom, well below the carb. Also the gas line is very flexible and is it suppose to be like that or more rigid?

Suggestions are welcome! I really want this place to fly.

RE: engine problem: TT gp07
 

Roadman,

Welcome to RCU. Try and raise the fuel tank as high in the nose as possible as your first fix. You want the center line of the rubber stopper at the same level as the spray bar (needle valve) in the carburator. Give that a shot as it sounds like you're having to draw fuel too far for the engine to be able to start and run.

Hogflyer

Edit: You may want to pay a visit to the 1/2A forum. We specialize in .15 and below (down to .010), and the smaller planes - generally from 36" on down. There is some info on the TT .07 there that may be interesting/helpful. Also do a search on RCU for the TT .07 for more info.

RE: engine problem: TT gp07
 

Yup, Hogflyer is correct. I have one of these engines, and although I like it, it is a bit temperamental. It will not draw fuel through a filter, so tank placement is going to be very important as well. You must have the center of the tank on the same level as the carb fuel inlet.

Also, mine had a loose and poorly sealed crankcase backplate that caused all kinds of grief. I fixed it by removing the backplate (it screws into the crankcase) and sealing it with a couple of wraps of teflon plumbers tape and then screwing it back in really tightly.

The fuel line can be flexible, just make sure it hasn't kinked against anything.

Good luck,

Phil

RE: engine problem: TT gp07
 

I had a few set up problems as well. Center the tank, get rid of the fuel filter, use small fuel tubing. I found it needed to have a nice and wet prime, that turned into a flooded condition real easy. I found the following procedure worked well. Fill tank, with throttle shut- fill carb venturi. Open throttle to high idle, flip prop a few times, then apply glo and electric starter. It would usually fire and run long enough on the prime to get the fuel lines full. MA 6x3 worked best for the plane it was on.
Good luck, MikeB