Other than the OS 1.20 AX, what is the lightest and most powerful engine in the 1.20 range?

I don't know about the lightest, but I have three of them and, in my opinion, they are the absolutely best. Great power, great performance, and start easy and fast each and every time.

So, without any other engines of that size in my inventory, I have no other opinion to offer.

Yup the O.S. are wonderful. Thanks to their tolerance in tuning, they are one of the easiest engines to set up IMHO.

That's not to say that you can't find other engine in this range for lower prices.

e.g. the GWS 1.20 is a pretty good deal for the price as it is much cheaper. But it may not be as suitable for someone w/o prior experience tuning up engines.

I like the 120 4 stroke pump

YS 110 FZ

I believe he was talking about 2 strokers.

Ok.. I'll stay 2 stroke..

BCMA or SPE 26cc Gasoline engine.
Light, powerful, reliable, turns a big prop, smaller tank, pumped carburetor
$3 per gallon gas vs $15 per gallon glow.

I'll take on a 1.20 glow slimer anyday

The SK 1.10 and 1.30 2-strokes sold by KangkeUSA are good alternatives if you're shying away from the pricetag of the O.S. Max 1.20 AX. Both SK models are slightly heavier than the 1.20 AX, but are powerful, reliable, and a great value.

The Thunder Tiger Pro 1.20 SE (Side Exhaust) is almost five ounces heavier than the 1.20 AX, but it is another very good value in a top quality engine.

The Magnum XL 1.20 AR-II is another solid choice that is very close in weight to the O.S. and a good value for the price.

Sig carries the Aviastar 1.20 2-stroke, which is almost the same weight as the 1.20 AX (within about an ounce or so). While not a well known brand here in the U.S., reviews of Aviastar/Aviatech engines have been positive. Considering the Aviastar costs almost $100 less than the O.S. Max, it would be a very tempting engine to try.

To find something lighter and more powerful than the O.S. Max 1.20 AX, you don't have very many choices here in North America. All of the commonly distributed engine lines seem to be slightly heavier than the O.S. model.

If you want power and light weight in a 1.20 2-stroke, the 1.20 AX really appears to be the best option.

I have only one two stroke glow .120 and that happens to be Webra. It a superb engine however to make it so I had to put an OS carb on it, Hmm seems to me that if I were agine in the market for a 120 agine I might just consider the entire OS engine

I think Saito's 4 stroke engines are the lightest around. But prices are heavy

Mody

thanks big ed. Avistar may be the ticket as I really am just experimenting at this point.