Magnum/ASP engine failure

Feb 08, 2009 3 Replies
T

Today my ASP 80 RFS was flying along nicely for 10 minutes and then, as I backed off the throttle after a lowish pass, the engine went bang and came to a sudden stop. I immediately lowered the landing gear and managed a reasonable dead-stick landing. On the ground it's apparent something has let go in the engine, most likely the rod/crank pin.



I've yet to disassemble the motor to assess the damage but as I've never had this type of failure before I thought it worth asking around.



Have you ever heard of this occuring on Magnum/ASP four strokes? Can you suggest any reasonable causes...noting that the engine flew perfectly for the first 10minutes?



Regards


Vote
Twitter Facebook LinkedIn
T

Ted shuffled out of his cave and grunted these great (and sometimes not so great) words of knowledge:

Without a tear down it is hard to say.

A more reasonable and likely explanation is a valve keeper let go and you dropped a valve into the engine. If that is the case, it may be cheaper to replace the engine than to try and repair/rebuild it.

I would think that a bad wrist pin (or rod) would be making some type of noise for awhile prior to it letting go.

Vote
Twitter Facebook LinkedIn
J

Try going to google groups and sezrching on "magnum". There's a ton of stuff there.

Here's the URL that appears upon searching, per above:

formatting link
Have fun.

--- Joe

Vote
Twitter Facebook LinkedIn
S

I have had an ASP 120 break a rod in half in flight.

Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required