all 2 strokes are going away in all western nations due to emissions, thats why rotax dropped it and the people in austria with rotax engineering experience have branched off to small 4 strokes like the quattro

Yamaha Phazer what’s not to like, more power, better fuel consumption, about the same weight give or take just a little. Not to mention Yamaha’s stellar reputation for incredible engines ( I. E Toyota / Lexus ). Several companies are starting to get on board with this now and making it an easier transition for UL applications. Would love to see a video with each going head to head (overall cost, TBO comparison & so on 😊 )

The new 600 cc twin would make a much better candidate smaller lighter and put out 125 hp and it’s snowmobile and set up to fly. It would make a great motor. I’ve got one sitting in a brand new sled sitting in my garage and we barely get any snow, my wife will kill me, but I plan on yanking that motor motor out and building a plane

2 words....Yamaha Phazer.

I think your missing something here…. Rotax have other 4 strokes used in PWC’s and Ski mobiles. I would imagine we will see some aero versions of those, like the Rotax 900 HO ACE

Especially when start or stop , it sounds like a broken crankshaft .

What are your thoughts on Rotax stopping production of the 582? And which engine would you replace a 582 with? Leave a comment and let me know!

Heard they started again at least for a short time

I would run the 583 on my skidoo mxz 583 over sierra mountain passes in snow storms, in the middle of the night, by myself, for fun all the time. Not once did she ever quit on me. I think that is a far more dangerous thing to do than fly an ultralight with a 583 where you have the chance to do an engine out landing at low speed in many places.

Seadoo from the 90's has comparable Rotax engines and they are plentiful and cheap. I have one in the field with a 587

Loved this! Well done Jaco

Im running Hirth F23 50hp electronic fuel injection reduction belt gear and exhaust. Runs 78 lbs and you can get it for between $5000-6500.

There is a way to bring back the powerful 2-stroke, that is by make a hybrid of it with the venerable 4-stroke - to be a D-stroke cycle (as described below).

For ultralights, 2 Bailey V5 4-stroke engines will give you 41hp at a combined weight of 34kg (about 75#). But it will cost you.

did you consider Wankel LCR-814 .... 70 HP, approx. same weight as 582

What about the Simoni Victor 2 plus or super? lot more power in the same foot print.

It looks like both Yamaha & ShinMaywa conducted an early stage test flight in what appears to be a Kitfox style 2 person aircraft.

What do you think of Viking engines ??? Car conversions. Out of Florida.

Jabaru

I heard Kawasaki snow mobile engines make great conversions