Hi Jonathan
My engine number is 5645672 done 380hrs so is a bit younger.
I live in Taupo NZ and use Solo Wings at Tauranga for servicing. Last year the prop & gearbox were removed to check the friction torque of the motor which whilst high was in limits.
But i feel this begs the question because once the prop and engine are hand turned two or three compressions the initial friction is always a lot less.
I will be getting Solo Wings do trhe suggested test on No2 bolts.
So will keep in touch.
Roy Marsden
What you mention below is a different issue and associated Service Bulletin from what we are talking about here. What you have below relates to an issue with the actual Crankshaft. The issue we are talking about is with the CRANKCASE.
Thanks,
Jonathan
According to Service Bulletin SB-912-059/914-042 I think all I need is to check my engine number because the cranksaft has not been replaced and engine number does't match those which are to be checked. Also there's been a lot of talking what prosedure take to check cranksaft serial number. I assume that it need's full disassembling of the engine, there perhaps is a marked place in some part along cranksaft. I'd like to hear also more from the magnetic plug. Removal, inspection and what that magic plug does including that below 3mm it's not short. Finally, within your video's is only still picture by the plane pattern with sound :huh: attleast in my computer ( problem between chair & net) :woohoo:
That is very interesting. Obviously you know these engines well and work on them regularly?? Have you seen this before at all?
It seems to me there is a clear pattern here with a small range of engine serial numbers which have all so far started with 5645***. Would appear to be a serious manufacturing or assembly flaw apparant with some crankcases around the 2005/2006 period. I certainly agree that the repair bill is significant. I am lucky enough to be able to strip, replace, and assemble my own engine so will just be paying for the parts but I would much prefer Rotax came to the party and provided some assistance.
Have not seen anyone with one of these motors making 1000 hours yet before having this issue.
DOES ANYONE KNOW HOW TO CONTACT ROTAX DIRECTLY???? I would like to speak with them about this and direct them to the topic on this forum.
Thanks,
Jonathan
Hi All,
Interesting enough that today I had a fretted engine case come into my shop. It is only 73 engine numbers from the one reported above a 2005 912ULS and has 944 hrs on it. It has all the symptoms and I'm sure it is the problem after doing some test. Unless Rotax helps with parts cost this is a $12K to $14K fix by the time it's all back on the plane and labor and shipping are figured in.
A kiwi!! Im also in New Zealand but down in Dunedin. I certainly know of Solowings. Have you spoken to Colin about this yet? I would be curious to know if he has struck it before. I have spoken to the Landing Spot in Rangiora and while they have heard of fretting, they have not seen it. The parts quote through the Landing Spot was very significant at around $13k just for parts when GST and freight were included. If you added labour on the job too it could be $15k plus I would imagine.
This is certainly a concerning issue to me. As I mentioned earlier I have just about got over the shock of having to fork out so much money on a 'half time' engine, but just keep thinking how bad the outcome could be if the symptoms were ignored for too long.
Cheers,
Jonathan
Hi Jonathan
My engine number is 5645672 done 380hrs so is a bit younger.
I live in Taupo NZ and use Solo Wings at Tauranga for servicing. Last year the prop & gearbox were removed to check the friction torque of the motor which whilst high was in limits.
But i feel this begs the question because once the prop and engine are hand turned two or three compressions the initial friction is always a lot less.
I will be getting Solo Wings do trhe suggested test on No2 bolts.
So will keep in touch.
Roy Marsden
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