RE: OS 32 SX Aircraft engine
Yep, the 28 FSR. This engine weighed 9.6 oz with muffler and put out over .9 horsepower. Had a great idle too and I had five of them. Used two on my 13 lb Twin Otter that is on my avatar. Dual ball bearings, ABC, and was just plain bullet-proof. I like the 32SX as well which is newer. The 28FSR came out around 1985 I think but never got very popular for some reason.