We have 183cc boxers which have less weight and 20% more thrust.
https://www.dropbox.com/s/htftd6ttj1b2emj/Dym.mp4?dl=0Electric looks like the way to go guys....check out these 3 vids .....
700 hp electric Beaver amphibian....first flight just a few days ago.
Twin-engined electric trike...swooping and soaring....
A recent Kitplane article showed a homebuilt Strojenic S2 motor-glider powered with a Zero Electric-Motorcycle motor-battery combo! Maybe an electric single-seat Breezy(Zero motor) would be neat for 40-minute flights, and pretty inexpensive.
After reading through this thread, I couldn't understand why the ultralight community doesn't embrace this engine...until I found prices from $7k US to 13k Euro. Yeah, pretty steep for 35 HP.
Do you have a reduction unit, that would fit a 3W 342 ; i know LanitzWe have 183cc boxers which have less weight and 20% more thrust.
Exept for this we have 236, 294, 342 cc
============================================Yellowhammer.......be it Rotax,Yamaha,Cuyuna,Kawasaki,B&S,etc....the engine itself is almost never the issue unless it is being operated as a direct drive.
When you operate an engine as direct drive then that engine needs to be designed for that scenario from the very beginning.
For the most part,run any engine within its designed rpm & heat range and the engine will care less if it's on a motorcycle,snowmobile,mower,car,generator,etc.
There are so many engines out there that would make awesome aircraft engines....but there are no redrives available for those particular engines.
I'm not familiar with the Rotax 800 & 900 engines but I will Google them.
What are the redrive options for them ?
The Yamaha conversions are 4-stroke and are great engines.....but....a new Rotax box + adapter + engine + misc. = about $9-10k for an airworthy engine and redrive.
Engines are cheap and reliable.......the cost is the redrive.
Build a dependable redrive and offer it at a reasonable price.....then prices for aircraft power will come down.