Free air engines don’t do well on gyros. Dad had a few and they were always right on the edge of overheating. I also heard their horses are ponies not horses. Austrian horses seem to be Clydesdales and everyone else’s are much smaller. I mean that a 80 HP Rotax I would be willing to bet is much stronger than a 80HP anything else.What about the Jabiru 2200, has anyone tried one in a pusher configuration, one of my flying buddies has one on his X air and it seems to have lots of power (80 HP) and no gearbox required.
Viking has several engines. Dad put quite a few 110’s on machines. Joe Pires not sure of spelling) has a 130 on his machine. He has a couple of problems with the gear box in the beginning but they have been solved.Viking 90 is fatter but they have hours on it now.
Lots on the old forum on Jabiru. Seemed to have a lot of cooling issues.What about the Jabiru 2200, has anyone tried one in a pusher configuration, one of my flying buddies has one on his X air and it seems to have lots of power (80 HP) and no gearbox required.
I will be building the 65hp 582,s, the 75hp 612 Big Bore , the 85hp 612 Rave & the 92hp 670 Rave for years to come. The 612 series use a 582 engine & we have a kit to take it from 76mm to 78mm. We have been building the 612's for 2 years now & have 75 flying without a single warranty issue. In the 2 years we only had 3 customers that wanted to stay with the stock 582. We also built only 5 of the 670 engines in the 2 years. To completely overhaul the 582 & install the rods to work with the 78mm 670 piston is $2850 ( All the engine overhauls from the 447 to the 670 is $2850 to have them completely overhauled ) The 612 Big Bore 75hp kit adds only $575 to the overhaul fee & uses the stock 582 exhaust. To go to the 85hp 612 Rave is $1075 & it requires my / CPI custom Rave exhaust system thats $780. We do have a exhaust that will take the 612 Rave to 110 hp. My mechanic runs one on his Airboat & has the redline at 8200 rpm. The 612 Rave & 670 Rave will save you 1gph in gas with the longer power stroke. We can get the Ducati Dual Ignition from Ducati & the Bing 54 carbs from Bing. We really do not use anything from Rotax so it has no effect on my engines. We will be building & overhauling all the Rotax 2 strokes for years to come !!!!!!!