Hi,
I have a 2002 Rotax ULS engine with just under 700 hours. Carbs are balanced, no soft start, and I have the older black starter motor. I’ve flown 100 hours with the aircraft and it’s always been a bit of a git to start, although better since I upgraded the battery and battery cables.
My symptoms are that full choke results in juddering when trying to start with the propellor stopping, then starting again (kickback?)
If I try to start without choke but with half throttle, the prop will just spin but there’s no juddering or kickback.
When it’s not very cold (sub 5°c), having mags off but full choke on and starting for ten seconds, followed by no choke and mags on plus starting will result in immediate start. Cold starts result in the struggling start.
I suspect the sprag clutch it just wanted to pick your brains before getting someone in to check.
Cheers in advance
I have a 2002 Rotax ULS engine with just under 700 hours. Carbs are balanced, no soft start, and I have the older black starter motor. I’ve flown 100 hours with the aircraft and it’s always been a bit of a git to start, although better since I upgraded the battery and battery cables.
My symptoms are that full choke results in juddering when trying to start with the propellor stopping, then starting again (kickback?)
If I try to start without choke but with half throttle, the prop will just spin but there’s no juddering or kickback.
When it’s not very cold (sub 5°c), having mags off but full choke on and starting for ten seconds, followed by no choke and mags on plus starting will result in immediate start. Cold starts result in the struggling start.
I suspect the sprag clutch it just wanted to pick your brains before getting someone in to check.
Cheers in advance
