G'day

A friend has a Four Star 60 with the OS Surpass Mk 2 91 in it. It flies really well. I have one with a Saito 100 in it. It flies pretty much the same as the 91 but with a little more power. The Saito and the OS fit the same engine mount. I am using an OS engine mount with my Saito though I did have to cut part of the mount away to clear the way for the fuel lines.

Then there are the clones of the OS made by Sanye and sold as Magnum and ASP. They are pretty good too and a deal cheaper.

And then there is the new OS 95V series four stroke. Or the Saito 115.

Any of these will do the job. The YS will too and be the most powerful so long as you know what you are doing.

And then there is the Laser 100 if you want a Rolls Royce engine. I have one in a Decathlon. Brilliant and quiet too and really easy to use. Not cheap though.

I am sure others will chime in with other possibilities.

Michael from Oz

PS. That's my Four Star 60 on the left. At the time it has a Saito 72 in it which was fine for normal use but the 100 really brought it to life.