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Rotax 532 a Boat Anchor?
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dosmythe(at)cox.net
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Posted: Thu Jul 13, 2006 5:23 am Post subject: Rotax 532 a Boat Anchor?

Wayne,

    I'm always interested in hearing reports about engine failures and was 

wondering what caused your other two engine outs on the 582.  I have a 582 

in my Classic IV.  The engine has approximately 360 hours with a "total" 

rebuild  around 300 hours.  I had the engine rebuilt to try and fix a 

totally unrelated problem (another story).  At the 300 hour tear down, the 

engine spec'd out to still be within all tolerances.  In other words, it 

didn't need a rebuild.  The total rebuild was around $2400 (new crank, 

pistons and all).

    I've been on the list for about 10 years and always get interested in 

the causes of engine out's or other flight safety issues.  I used to 

document all such items and posted a "KITFOXSAFE" bulletin.  Once an item 

was documented on the bulletin, we (the list) beat it to death until a 

consensus for a field fix or recommendation was reached.

    I'm sitting here and can't remember but only a couple cases where the 

582 quit in the air.  Two that I remember were one had a seizure due to the 

absence of the sieve sleeve in the carb bowls and another guy that had a 

pump pulse line rupture.

    The only time I've had a problem was once due to excessive slow flight 

(I think), and managed to foul the plugs.  The engine started to sputter but 

cleared up after a few minutes of normal cruise.



Thanks,

Don Smythe

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kerryskyring(at)hotmail.c
Guest

Posted: Thu Jul 13, 2006 10:28 am Post subject: Rotax 532 a Boat Anchor?

This seems like a good subject line in which to contribute an experience 

with the Rotax 912S in the S5 outback which I have helped build and 

(hopefully) will soon be flying. Some may remember I reported earlier in the 

year that the plane had done some taxying and short hops along the runway 

and all was looking good for a summer of flying off the 40 hour test time. 

It was not to be. After a number of runs the motor began running roughly. I 

consulted the list and we did the obvious things. Carburettors removed, 

cleaned, set to factory spec and remounted. Problem remained and time went 

by. Eventually a compression check revealed one cylinder low. Removing the 

rocker cap it was found that a valve spring retainer had broken and it was 

likely that metal had gone into the cylinder. This was a new engine with 

just 2.5 hours running time. That's the bad news. The good news is that 

Rotax is replacing it with a brand new engine which will be picked up this 

week. It helps that the factory is just a couple of hours down the west 

autobahn.



But this is just an anecdote and does not constitute a judgement about 

Rotax. The experience of our flying club with Rotax is generally good. But I 

don't want to start another discussion about which is best, just to say we 

had a problem and the factory has done the right thing. And to say that the 

Vienna fox will one day fly and in the meantime I keep the frustrations at 

bay with an occasional flight along the Danube in the Motorfalke.

Kerry



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