morid(at)northland.lib.mi
Guest
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 Posted: Fri Jul 14, 2006 2:48 am Post subject: Early 582 broken flywheel |
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Response to Bradley's post:
Back in about 1996, my first Kitfox, a M2 582 B-box (early 90s vintage), had
the very same problem, however there was no in-flight failure. Upon
startup, the engine locked up and wouldn't move. I couldn't even move the
prop. Thinking I'd broken a piston or perhaps a seizure, which made no
sense as I flew the airplane only a couple days previously with no sign of a
problem, I folded it up, hooked up the tow bar and hauled it down to the
shop for a look see. After removing the engine I found exactly what Bradley
experienced. However, fortunately mine never came completely apart. It was
still intact, but just barely and what locked up the engine was the starter
gear tooth had lodged in the crack which was 3/16 wide at its widest point.
It was very close to flying into pieces and at 6000rpm it could have been
catastrophic. I got lucky on that one. I called Jerry at Greensky
Adventures who told me that the early 582s were having this problem and that
there was a service letter about it. I never saw the letter, but ordered
the new flywheel and bolts. Comparing the new and old flywheels, the new
one was much thicker. After installing it I never had another problem.
The reason I'm replying to Bradley's post is to advise others that if they
have one of the very old 582s is to keep an eye on this part. The flywheel
is visible in the back and underside of the engine. Check the serial number
and see if it is within those in the service letter and if so, replace it
with the new model. Rotax Owners Association should be a good source for
the information necessary.
Other than that, the 582 gave me 400 hours of trouble-free service before I
sold it in 2000. Personally, I think it's a great engine and well suited
for the lighter Foxes. It DOES require some periodic tinkering to keep it
in peak performance.
Deke Morisse
S5
Sent: Thursday, July 13, 2006 10:42 PM
snip...
| Quote: | The failure was the starter gear at the back of the motor. I simply came
apart, and started grinding the metal off of the inner case. It caught at
the bottom, and broke out a piece about 4 inches by 3 inches. The crack
started at the gear teeth, and moved to the center. Curiously, it was in
between the mounting holes. I could not understand how it didn't fail at
the
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| Quote: | holes, as this is the natural stress riser. I think the failure occur from
the way the teeth were cut, or maybe damaged at some point in its life.
The
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| Quote: | gear on the starter showed no sign of malicious contact, but...
..snip
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