The Motavia engine will be described at the forthcoming Europa Club seminar at
York next month.
Its basically aimed at the Rotax 618 rather than the 912.
I can`t wait to find out at the seminar how this engine produces 80hp at such a
ralatively (to its capacity) sedate speed; BMEP would have to be extraordinarily
high for a normally aspirated engine of this size. There`s no substitute for
cubes, as the Americans say.
The BMW programme rolls on. It comprises an excellent engine, an excellent
gearbox and an excellent prop. The challenge is to get all three working in
harmony (or to be precise, harmony without resonance if that`s not an
oxymoron!). The requirement is to produce a reliable conversion which pilots can
trust; there`s more to it than bolting on the gearbox and seeing the propellor
turn. Again, more news at the seminar.
Duncan McFadyean
|