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  #11  
Old 04-10-2012, 06:59 PM
gossend gossend is offline
 
Join Date: Dec 2011
Location: Georgetown, Texas
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Hope you know about copper and 'flexing'. Ordinary copper tubing will work harden with flexing and eventually (soon, actually) crack or split. I'm not proud to say I 'been there'. Also managed to land in at a nearby field drenched and near blinded by Avgas. No fire (obviously).
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  #12  
Old 04-10-2012, 08:37 PM
tim walter tim walter is offline
 
Join Date: Apr 2011
Location: san rafael
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Quote:
Originally Posted by JonJay View Post
Funny, well no, and priming the inside would be hard to do, and not very wise.
Interesting side note. All of the lines are painted on my G.46 projects. They are copper lines, yes, copper throughout, and they are painted for identification. I do not know what the standard is but it is well documented in the manuals and schematics, I just have to learn to read Italian better. Hydraulic lines are one color, fuel another, static, pitot, etc....
It is quite pretty.
interesting.
what color are the fuel lines?
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  #13  
Old 04-10-2012, 08:39 PM
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JonJay JonJay is offline
 
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Location: Battleground
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Quote:
Originally Posted by gossend View Post
Hope you know about copper and 'flexing'. Ordinary copper tubing will work harden with flexing and eventually (soon, actually) crack or split. I'm not proud to say I 'been there'. Also managed to land in at a nearby field drenched and near blinded by Avgas. No fire (obviously).
Scary experience. Glad the outcome was not a tragedy.
Yes, these lines will be changed out to aluminum due more to age and unkown condition than the fact they are copper. Where they are used there is no relative motion other than potential vibration and they are extremely well supported.
For what its worth, my copper primer lines in the Bucker are going on 20 years in service with no issues. They are properly supported and installed with a "loop" to isolate. However, I expect some day they will fail. Not as big of a concern as a primary fuel line for sure.
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  #14  
Old 04-10-2012, 08:47 PM
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JonJay JonJay is offline
 
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Quote:
Originally Posted by tim walter View Post
interesting.
what color are the fuel lines?
Giallo "Yellow"
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  #15  
Old 04-10-2012, 09:54 PM
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Neal@F14 Neal@F14 is offline
 
Join Date: Aug 2007
Location: Wichita Falls, TX
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Quote:
Originally Posted by JonJay View Post
For what its worth, my copper primer lines in the Bucker are going on 20 years in service with no issues. They are properly supported and installed with a "loop" to isolate. However, I expect some day they will fail. Not as big of a concern as a primary fuel line for sure.
Also FWIW, my old Cherokee had copper lines for the fuel pressure and oil pressure gauges running from the engine compartment, thru the firewall, and to the gauges on the instrument panel... all from the factory. After over 45 years, no signs of failure or leakage from them.
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