Ultralight engines
Can't comment on the Jab's but we are trialling an ultralight manufactured in Italy with a liquid cooled Rotax engine.One thing that surprises me is the absence of a coolant temp. gauge.
I understand that oil temp will eventually indicate core temperature of the engine and the relevance of CHT's, but I would have thought a coolant temp gauge would indicate more quickly any pending overheating issues which incidently this aircraft has had.
It also has a difficult to view / access coolant surge tank and relating back to my heavy machinery backround a low coolant level indicator wouldn't cost much or add much weight.
Other than these problems it is a well built fun flying machine.
Will be interesting to see the results of the 2 Jab. failures.