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XS exhaust down pipe crack

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fireflier

Joined: 24 Jun 2012
Posts: 58

Posted: Fri Apr 17, 2015 2:52 pm Post subject: XS exhaust down pipe crack

Hi



Whilst flying today my exhaust down pipe on no 4 cylinder developed a crack as shown in the attached photo. 



I have done a search of the list and found one further history of this type of failure on g-tern. This was back in 2012 but there wasn't any conclusive answers as to what has caused this type of failure. 



My exhaust is a CKT engineering system fitted to a rotax 912uls with woodcomp sr3000 vp prop, europa XS. The exhaust system has had approx 30 hrs use before this failure. 



I have sent the owner of G-tern a PM through this forum to see if he can Give me any further information as to possible cause and what soloution's he has had to rectify the problem he had back kn 2012. 



If anyone else could help or provide any possible answers to this type of failure, it would be much appreciated. 



Many thanks

Donald

G-PUPY

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Fireflier

JonSmith

Joined: 21 May 2010
Posts: 110

Posted: Sat Apr 18, 2015 12:42 am Post subject: Re: XS exhaust down pipe crack

Hi Donald,

I got your message and have sent you a pm.  If you don't receive it please let me know and I'll try again (I'm not an expert on this messaging thing!)

Cheers, Jon

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G-TERN
Classic Mono

fireflier

Joined: 24 Jun 2012
Posts: 58

Posted: Sat Apr 18, 2015 1:54 am Post subject: Re: XS exhaust down pipe crack

Hi Jon



Got your pm, thanks and I have replied some interesting points you raise and very similar symptoms to yours.



Many thanks

Donald

G-PUPY

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Fireflier

graeme bird

Joined: 15 Jul 2010
Posts: 434

Posted: Sat Apr 18, 2015 8:11 am Post subject: Re: XS exhaust down pipe crack

looks like a manufacturing defect to me. Loop weld has thinned the metal too much. Get on the the manufacturers.

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_________________
Graeme Bird
kit4 (Wagstaff) TBD
Kit3 G-CLXU (Gregory) mono 914 xs Woodcomp
Kit2 G-PATS - (kesterton) Mono Classic 912 warpdrive
Kit 1 G-UMPY - Mono Classic/XS 912S, Woodcomp G(@)gdbmk.co.uk

max8992

Joined: 28 Jul 2011
Posts: 142

Posted: Sat Apr 18, 2015 9:08 am Post subject: XS exhaust down pipe crack

Hi Donald,



FYI we had a comparable crack on our MCR. This was due to a rupture of a

bolt of fixation under the engine. 

Don't know if it helps but just have a look how the engine is maintained.

Remember also what was the level of vibration at low rotation and how the

engines topped...



Max  Cointe

mcointe(at)free.fr

F-PMLH Europa XS_TriGear

Kit #560-2003 912ULS/AirmasterAP332 540 hours



F-PLDJ Dyn’Aéro MCR 4S 

Kit #27-2002 912ULSFR/MTProp MTV7A 1660 heures

-----Message d'origine-----

De : owner-europa-list-server(at)matronics.com

[mailto:owner-europa-list-server(at)matronics.com] De la part de fireflier

Envoyé : samedi 18 avril 2015 00:52

À : europa-list(at)matronics.com

Objet : XS exhaust down pipe crack




--> <fireflier(at)btinternet.com>



Hi



Whilst flying today my exhaust down pipe on no 4 cylinder developed a crack

as shown in the attached photo. 



I have done a search of the list and found one further history of this type

of failure on g-tern. This was back in 2012 but there wasn't any conclusive

answers as to what has caused this type of failure. 



My exhaust is a CKT engineering system fitted to a rotax 912uls with

woodcomp sr3000 vp prop, europa XS. The exhaust system has had approx 30 hrs

use before this failure. 



I have sent the owner of G-tern a PM through this forum to see if he can

Give me any further information as to possible cause and what soloution's he

has had to rectify the problem he had back kn 2012. 



If anyone else could help or provide any possible answers to this type of

failure, it would be much appreciated. 



Many thanks

Donald

G-PUPY



--------

Fireflier





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_________________
Max8992
Europa XS #560 F-PMLH

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