The place for technical discussions about GA and flying.
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By lappies
#1840314
Hi There everyone.
I hope someone can help.
I am in the process to build a ultralight plane from plans. they recommend a motor that is no more than 75Lbs and up to 40Hp but I am new at this so I am not sure where to start to find a motor.
I am looking for a second motor, they suggested to get a Kawasaki 440A but can not see any in the U.K. but I suppose a Rotex motor will be more reliable.
Can someone please help?
Regards
Johannes
By Red
#1841033
The Rotax 503 would suit, but they stopped making them, might find a good second hand one but be sure to check the big end play as the crank and con rods are a press together assembly that once worn out of limits can be expensive to replace (relative to the engines worth)

I believe Hirth also make engines that would fit your needs but have no experience of them.