Today's Message Index:
----------------------
1. 01:37 AM - Re: Re: RotaxEngines-List Digest: Squeak on Rotax 912S (MR PAUL MITCHELL)
2. 09:17 AM - Re: Re: RotaxEngines-List Digest: Squeak on Rotax 912S (NYTerminat@aol.com)
3. 01:17 PM - Re: Re: RotaxEngines-List Digest: Squeak on Rotax 912S (Duncan McFadyean)
Message 1
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| Subject: | Re: RotaxEngines-List Digest: Squeak on Rotax 912S |
--> RotaxEngines-List message posted by: "MR PAUL MITCHELL" <paul.mitchell2@homecall.co.uk>
My 20 hour old engine has the same squeak under all those conditions. I was
also told that was "How they are" I also had other concerns. It took the
intervention of the MD from the aircraft manufacturer in Italy direct to
Rotax in Austria to get the Agent in UK to even come and look. After the
intervention, a really positive visit took place. I now have a much sweeter
engine with a squeak.
Paul Mitchell
----- Original Message -----
Sent: Wednesday, July 19, 2006 10:24 PM
Rotax 912S
> --> RotaxEngines-List message posted by: "Duncan McFadyean"
> <ami@mcfadyean.freeserve.co.uk>
>
> I've had the squeak for 300 hours; either when pulling the prop trough by
> hand or on shutdown. I'm pretty sure it is the dog clutch (i.e. NOT the
> slipper clutch) that produces this.
>
> I complained to my local Rotax agent when it was new. He said I was just a
> trouble maker! This is the level of service that can be expected from
> Rotax's illegal and anti-competitive policy of 'one Country, one Agent'.
>
> Duncan McF.
> ----- Original Message -----
> Sent: Monday, July 17, 2006 10:50 PM
> 912S
>
>
>> --> RotaxEngines-List message posted by: "John M. Goodings"
>> <goodings@yorku.ca>
>>
>> After flying our CH601HD with Rotax 912S (100 hours) last weekend, we had
>> occasion to pull the prop through by hand. When pulled quickly, a squeak
>> was heard from the front of the engine; the engine was hot. When we ran
>> the engine again after lunch, the squeak was heard again for the last
>> couple of blade rotations before the prop stopped. We had heard from an
>> expert AME on Rotax engines that a few certified 912S engines had been
>> assembled with an incorrect part in the slipper clutch in the gear box.
>> (The mating surfaces of the clutch hub and the dog gear should both have
>> an angle of 7 degrees, whereas one of the parts in the faulty assemblies
>> had an angle of 0 degrees, meeting the other part at the wrong angle.)
>> There was the possibility that some uncertified engines like ours had
>> suffered a similar fate. Thus, our gear box was opened up by the expert
>> AME; however, the correct parts had been installed. It was reassembled
>> by
>> him (with great care; it had to sit overnight for the correct Loctite
>> sealant to set). When the engine was run approximately 40 hours later,
>> the squeak had disappeared. We would be interested to learn if any other
>> 912S users have encountered this characteristic squeak. If so, were they
>> able to determine a clear-cut cause?
>>
>> John Goodings, C-FGPJ, CH601HD with R912S, Toronto/Waterloo.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
> http://www.matronics.com/Navigator?RotaxEngines-List
> http://wiki.matronics.com
>
>
> --
> No virus found in this incoming message.
>
>
Message 2
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| Subject: | Re: RotaxEngines-List Digest: Squeak on Rotax 912S |
Paul,
Thanks for your reply, I am glad that I am not alone with the squeak. I have
forwarded these e-mails to Lockwood and will post their reply.
Bob Spudis
N701ZX CH701/912ULS
awaiting intervention
do not archive
In a message dated 7/20/2006 4:39:45 A.M. Eastern Daylight Time,
paul.mitchell2@homecall.co.uk writes:
--> RotaxEngines-List message posted by: "MR PAUL MITCHELL"
<paul.mitchell2@homecall.co.uk>
My 20 hour old engine has the same squeak under all those conditions. I was
also told that was "How they are" I also had other concerns. It took the
intervention of the MD from the aircraft manufacturer in Italy direct to
Rotax in Austria to get the Agent in UK to even come and look. After the
intervention, a really positive visit took place. I now have a much sweeter
engine with a squeak.
Paul Mitchell
Message 3
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| Subject: | Re: RotaxEngines-List Digest: Squeak on Rotax 912S |
--> RotaxEngines-List message posted by: "Duncan McFadyean" <ami@mcfadyean.freeserve.co.uk>
Paul,
May we benefit from the knowledge of what was otherwise done to make your
engine much sweeter?
Duncan McF.
----- Original Message -----
Sent: Thursday, July 20, 2006 9:34 AM
Rotax 912S
> --> RotaxEngines-List message posted by: "MR PAUL MITCHELL"
> <paul.mitchell2@homecall.co.uk>
>
> My 20 hour old engine has the same squeak under all those conditions. I
> was also told that was "How they are" I also had other concerns. It took
> the intervention of the MD from the aircraft manufacturer in Italy direct
> to Rotax in Austria to get the Agent in UK to even come and look. After
> the intervention, a really positive visit took place. I now have a much
> sweeter engine with a squeak.
> Paul Mitchell
>
>
> ----- Original Message -----
> Sent: Wednesday, July 19, 2006 10:24 PM
> Rotax 912S
>
>
>> --> RotaxEngines-List message posted by: "Duncan McFadyean"
>> <ami@mcfadyean.freeserve.co.uk>
>>
>> I've had the squeak for 300 hours; either when pulling the prop trough by
>> hand or on shutdown. I'm pretty sure it is the dog clutch (i.e. NOT the
>> slipper clutch) that produces this.
>>
>> I complained to my local Rotax agent when it was new. He said I was just
>> a
>> trouble maker! This is the level of service that can be expected from
>> Rotax's illegal and anti-competitive policy of 'one Country, one Agent'.
>>
>> Duncan McF.
>> ----- Original Message -----
>> Sent: Monday, July 17, 2006 10:50 PM
>> 912S
>>
>>
>>> --> RotaxEngines-List message posted by: "John M. Goodings"
>>> <goodings@yorku.ca>
>>>
>>> After flying our CH601HD with Rotax 912S (100 hours) last weekend, we
>>> had
>>> occasion to pull the prop through by hand. When pulled quickly, a
>>> squeak
>>> was heard from the front of the engine; the engine was hot. When we ran
>>> the engine again after lunch, the squeak was heard again for the last
>>> couple of blade rotations before the prop stopped. We had heard from an
>>> expert AME on Rotax engines that a few certified 912S engines had been
>>> assembled with an incorrect part in the slipper clutch in the gear box.
>>> (The mating surfaces of the clutch hub and the dog gear should both have
>>> an angle of 7 degrees, whereas one of the parts in the faulty assemblies
>>> had an angle of 0 degrees, meeting the other part at the wrong angle.)
>>> There was the possibility that some uncertified engines like ours had
>>> suffered a similar fate. Thus, our gear box was opened up by the expert
>>> AME; however, the correct parts had been installed. It was reassembled
>>> by
>>> him (with great care; it had to sit overnight for the correct Loctite
>>> sealant to set). When the engine was run approximately 40 hours later,
>>> the squeak had disappeared. We would be interested to learn if any
>>> other
>>> 912S users have encountered this characteristic squeak. If so, were
>>> they
>>> able to determine a clear-cut cause?
>>>
>>> John Goodings, C-FGPJ, CH601HD with R912S, Toronto/Waterloo.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>> http://www.matronics.com/Navigator?RotaxEngines-List
>> http://wiki.matronics.com
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> No virus found in this incoming message.
>>
>>
>
>
> http://www.matronics.com/Navigator?RotaxEngines-List
> http://wiki.matronics.com
>
>
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