Check out this 1.20 conversion http://tech.flygsw.org/ttpro120conversion.htm Capt,n Also a up-date http://tech.flygsw.org/ttpro120conversion_b.htm

A few obvious errors, the thrust numbers are not right, he uses the ThrustHp chart..NO WAY...
The ignition is not the same as Dessert ? Aircraft uses, it's a Chinese look alike...Nothing wrong with it, just not accurate...Almost everyone is now using that Chinese ignition, rebranded ...

RCIGN1: I agree with you on the data. I noticed the mix was 16-1... that would put a lot of oil in there for the rod bearing...ect. But more oil more power. I have a Thunder Tiger pro .46 and it is one powerfull engine. Gave it to my Grandson and he loves it. I never ran the bigger 1.20 Thunder Tiger, but I suppose it may be about the same quality as the China made Super Tiger. Best Regards Capt,n

now, if only they would make a head for the super tigre .90 they would have my money in a pinch!

Talk to Keith at BME engines. They sell a gas/igniton conversion for Super Tiger engines, including the .90....

AV8TOR

HUummm. I had a like new Supertiger .90 gave to me. It has a broken off exhaust bolt. It seems like making a new gas head for it may be fun!! Capt,n

Has anyone considered a gas / glow version, further reducing the weight of the ignition system?

Do you have a rotary table?

flipflop,

Yes I have a rotary table.

I'm working on a Gas/Glow Super Tiger .90. Should be ready soon.

AV8TOR

There are typically several big glow engines (Super Tiger or other) in the classified ads at any given time. A lot of people shy away from these due to the glow fuel consumption rate (real or imagined) and carb / pump problems (real or imagined). Either way this creates an opportunity for the conversion crowd to pursue another line of conversion (from glow to gas / glow) relatively cheaply. Just one opinion...

Av8tor,

How are you going to determine which is the right carb for the conversion?

Thanks

I believe the stock glow carb on a Supertiger .90 should be ok for at least a good test. You can aways make an adapter for a small pump carb. Capt,n

A carb from a Weed Eater 21 should be about right?

I found this Webra ....sounds like it has a needle brg rod! Capt,n http://www.webra-austria.at/neu2007/...07.php?lang=EN ADDED Also like in post #11 foamcut has a very good idea....there is going to be a lot of conversion options for gas/glow or just gas. Everyhing for just about anybody!!!

I am working on a ST 2300 to gas

Foamcut I am going home and will have your mufflers ready to ship Tuesday and will thow in a couple trottle arms for you to try out

Ken,

I'm looking at a ST2300 in the classified as well. That modified head on the Thundertiger 1.20 really grabbed my interest.
I've got a ST3000, an ST2500, and an ST3250 laying around that I've avoided using on my projects until now. The Walbro carb on gas / glow ignition solves the fuel problem without adding an EI.

I'm looking forward to trying the throttle arms.

Sent you a PM as well.

Thanks

The gas/glow may not run so good with the high oil content needed for plain bearings. not sure on that????? Capt,n

I am puting needle bearings in mine I have a new one ordered 149. versus 100 for used so I went new . I had been bidding on soom on ebay but they always went for near new price.

I am also going to cut some aluminum degree wheels on this trip home they are 4" and has a long mark for the 28` line I have them drawn but not cut yet so it will be an experiment I may also anodize the before cutting that might look good, we wil see

Ken: I am real interested in your projects. The needle bearings will be great....I hope. That is something I wanted to try for a long time. Best wishes for a great turnout. Capt,n

Ken,

Keep us informed on the needle bearing swap.

Thanks

Check this website for Super Tiger gas conversions:

http://www.aero-sports.com/airhobbies/services.html

However, a good while back I e-mailed them twice about the conversions, with questions about how they were handling the fact that the crank pin wasn't hard enough to work with roller bearings. They never e-mailed me back.

Keith at BME engines is selling a converted Super Tiger .90, (That's where I got mine.) He doesn't convert customer engines however, and I'm not sure if he is going to offer more than just the .90....

Keith?

AV8TOR

I think that gas/gow fuel with 6-8% oil content should work great with these big bore engines, also maybe the stock carb will be easyer to fine tune because of the methanol content, this is just a guess.
Maybe is time to experiment again I have a Magnum 1.8 that is begging to be converted to gas/glow

Ken are you still making mufflers for conversions? Last I heard you were selling your stuff.