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CKT silencer crack

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JonathanMilbank

Joined: 14 Apr 2012
Posts: 388
Location: Aberdeen area

Posted: Sun Feb 26, 2023 4:09 pm Post subject: CKT silencer crack

This damage looks difficult to repair by welding. The "collar" into which the exhaust header tube is held with springs, has broken the weld most of the way around where it attaches to the silencer box. There are other broken small welds where the other header tubes get inserted.

Throughout the 300 hours total in the air since the silencer was first installed, the carburettors have been kept electronically balanced and the Airmaster propeller is also well balanced. The silencer was suspended with utmost care to avoid strains as the flange nuts got tightened, making sure to tighten the telescopic joint in #1 header tube last.

I'll probably have to replace the whole exhaust system. This topic is just FYI.

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fireflier

Joined: 24 Jun 2012
Posts: 58

Posted: Sun Feb 26, 2023 11:43 pm Post subject: CKT silencer crack

Morning Jonathan



Hope your keeping well? 



I had a very similar failure with my silencer at around the same number of hrs on my aircraft, new silencer was indeed required. 



I have just had the number 3 cylinder down pipe fail on friday afternoon whilst flying. The Number 2 down pipe had no more than 30hrs on it before the failure   



Hope you can get things fixed soon. 



Kind regard's

Donald

Donald



Sent from my iPhone



 	  Quote: 	
		   On 27 Feb 2023, at 00:10, JonathanMilbank <jdmilbank(at)yahoo.co.uk> wrote:

 

 

 

 This damage looks difficult to repair by welding. The "collar" into which the exhaust header tube is held with springs, has broken the weld most of the way around where it attaches to the silencer box. There are other broken small welds where the other header tubes get inserted.

 Throughout the 300 hours total in the air since the silencer was first installed, the carburettors have been kept electronically balanced and the Airmaster propeller is also well balanced. The silencer was suspended with utmost care to avoid strains as the flange nuts got tightened, making sure to tighten the telescopic joint in #1 header tube last.

 I'll probably have to replace the whole exhaust system. This topic is just FYI.

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=510288#510288

 

 

 

 

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 http://forums.matronics.com//files/ckt_silencer_crack_189.doc

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Fireflier

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