It sounds like a good engine for Ultralights and gyros, due to their need for lightweight engines, but I wouldn’t think it would be as useful in a KR. Our aircraft are heavier, are intended to go a lot faster, and to higher altitude than those classes of aircraft. Two stroke, geared crank, and liquid cooled - three strikes against.
If I was looking at a slower & lower puddle jumper, though, it would be near the top on my short list because of the power/weight ratio. Still, I’ve never liked 2-stokes, mixing gas, keeping it fresh … just too many details that detract and distract from actually flying. Griff P From: KRnet <[email protected]> On Behalf Of Phillip Matheson via KRnet Sent: Tuesday, February 10, 2026 12:04 AM To: KRnet <[email protected]> Cc: Phillip Matheson <[email protected]> Subject: Re: KRnet> Simonini Engines. Two cylinders???? Hmmm Less thrust than 912. Rotax? A kit fox is not anything like a KR2S Good luck Phil Sent from my iPhone On 10 Feb 2026, at 13:45, Rich Parker via KRnet <[email protected]<mailto:[email protected]>> wrote: I've been in communication with the US rep of Simonini and he thinks their engine would be a good fit for a KR2S. He is currently installing one on a Kitfox to use as a Demo aircraft. I'm interested in getting other people's thoughts. I'm not affiliated but more info on the engine can be had by contacting : Matt Haakenson President, Straight Aero, LLC PO Box 751 Anchor Point, AK 99556 Phone: +1 (907) 299-5875 www.straight-aero.com<http://www.straight-aero.com> Rich Parker <1000078414.jpg> -- KRnet mailing list [email protected]<mailto:[email protected]> https://list.krnet.org/mailman/listinfo/krnet
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