RE: Supertigre Engine issues
 

First check to see if is truely an bad engine: Check all of these and report back.

Can you crank the engine over by hand?

If you open the throttle fully and blow into a tube connected to the inlet nipple, can you hear a slight hiss as the air comes out of the carb?

Remove the glow plug, put it on the ignitor. Does it light up to almost a reddish white color?

With the glow plug out turn the engine over. Do you feel a LOT of resistance? ( hopefully only a little ).

Put the plug back on, open the throttle to about 80%, and put your finger over the intake.

Crank the engine over by hand ( no glow ignitor installed ) until you see fuel move up to the carb, then continue to crank 1-2 times more.

Let go. The fuel may seep backward. If it does it should do so somewhat SLOWLY. If it does so quickly the engine is too rich.

If it seeps back slowly, choke it again and crank it one or two turns past when the fuel gets into the carb. Then throttle it down and put the ignitor on it and turn it over to start hopefully using an electric starter...

The engine should at least fire or kick if it is getting fuel.

If it does not, remove the ignitor and while turning it over with an electric starter look down the fully open intake.

You SHOULD see fuel moving or spraying in.

Do you?

RE: Supertigre Engine issues
 

Phewwww....mate, you've been trying for 4 months now to get it running and if the guys in the shop can't get it to run either then they should have replaced it immediately for you. Admittedly they don't seem to have many clues going by the fuels they recommended you use...sheesh, an Aussie saying to use 20% nitro?...and in a Super Tigre? They must have a good mark up on their high nitro stuff :). I use zero nitro in all my engines including several ST's (ABC and ringed) and they run perfectly on it. Go tell them enough's enough and don't get talked into buying an overpriced OS :D.

RE: Supertigre Engine issues
 

the lhs should have taken that engine back 4 months ago if that is how long you have had it.normally most lhs dont warrenty engines but they should have gave you another one within a week or so of your purchase.if i cant get an engine to fire after doing all the things these fellas suggested its back to the place where i bought it.i have never had an engine not fire that didnt have serious mechanical problems.i have purchased ringed motors that the ring was left off of or was broken.i own a lot of st engines and havent had any problems with any of them.i run 10% nitre in my st engines nothing higher and they do just fine.i guess you could but 20% seems a little high.

RE: Supertigre Engine issues
 

I was reading this and I assume the fuel is good. The worst engine day I ever had was caused by a bad gallon of fuel. watch for air bubbles in the fuel line. I second the opinion to redo the tank assembly. good luck[8D] make sure the carb seal is good as well as back plate and head. the stuff you will learn solving his problem will give you skills you will never loose so keep smiling;)

RE: Supertigre Engine issues
 

lol, i have given up on the engin now i took it back to lhs and the stink i kicked up there coss they wouldent take it back, in the end i stood out the font of the shop letting everyone know that they dont have a clue about nothing there, and sure enogh they returned my money, for the engin and the plane kit... so in the end it all sort of worked out, i have decided to stick to electric planes for now till i cant a hang of flying.

thanks for all the help folks

RE: Supertigre Engine issues
 

Of late I've helped others cure their engines problems by telling them to simply switch to APC props of the right size for their engines.

I helped a guy yesterday who could NOT get his O.S. AX .55 to run reliably....

He had a 10x7 MA prop ( too small too! ) mounted on it.

He was able to get it perfectly tuned up on the ground but the second he ran it up on the runway after a taxi, it would cut out...

It was not too lean, and it was not loading up. Nose up/down tests were all fine, as were pinch tests. He had been at this for days with more experienced club members help.

When I arrived I told him to switch to an APC 12x6 he had on hand.

He didn't believe it would work, he thought I was nuts, but he tried it...


Problem gone.


The same is true of the SuperTigres, T.H., GMS, Saito, Magnums, and many other engines I've dealt with.

The increased mass of the APC prop is very helpful, especially at first, to get the engine running right and broken in.

Once the engine has a decent amount of run time on it, switching to a lighter prop does not seem to be problematic.