I would like to know the dimensions of this, especially mount hole locations, front & rear, side & side. same as OS FS52S? If already discussed, very sorry but I cannot serch answer on my phone conditions.... Thanks.
The 52 is heavier than the 61 because they use the same crankcase and ancillaries. The cylinder liner in the 61 is thinner than than the 52 to give bigger bore. This reduces the weight. This is is common in lots of engines. The Irvine 40/46/53 2 strokes are identical externally but the 53 is lighter than both the 40 and the 46.
A .50 2 stroke will certainly be a lot faster if speed is what you want.The .61 is a great engine for cruising around in a nice realistic manner,I have a 60 " Ryan s.t.a.which is perfect with the .61F.S.
Thanks Lawrence! Finally I've gotten a second hand saito fa91. I've to buy a plane for this engine!!
48 thumbs up!
I bought two of these engines , both started straight away and run perfect even down to a low idle using 10pcnt nitro - plenty of power using a 12 x 6 propeller and economical on fuel. smooth transition from idle to full throttle. i am very happy with the motors for the price.
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27 thumbs up!
This engine is out standing. It started on the first try, no problems. It was pre set from the factory so I didn't need to do a lot of adjusting to it. It's worth the money believe me.
Great engine - very happy. Make sure you prime it until it is literally soaking in fuel and then it starts easier than any other engine I have come across. With a 500cc fuel tank I get around 15 minutes of mostly full throttle running a little on the rich side with a 11x7 prop.