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  #1  
Old 12-30-2014, 03:50 PM
ccsmith51's Avatar
ccsmith51 ccsmith51 is offline
 
Join Date: Jul 2010
Location: Orlando, FL
Posts: 1,077
Default Broken exhaust

Today I went flying and, to make a long story short, part of my exhaust broke off and departed the aircraft.

I bought the RV-6 and have contacted the builder to try to learn the type of exhaust system that is on it.

It is designed that the #2 cylinder crosses over the the #1 cylinder through a heat muff. The heat muff has nipples on each side that connect to the cylinders. The #2 cylinder has a Y where one pipe goes to the muff and the other drops down and exists the center of the cowling. This is the pipe that broke at the Y and is missing.





Anyone know who makes this system? I'd love to get just the part that is broken and not have to replace the complete system.

Thanks,
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Chris Smith
Maule M5-180C (Sold)
RV-6 O-360 CS (Sold)
RV-4 O-360 FP (Sold)
Full-time in the other type of RV....
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  #2  
Old 12-30-2014, 03:54 PM
Sid Lambert Sid Lambert is offline
 
Join Date: Jul 2005
Location: North Atlanta
Posts: 1,120
Default

Looks like a Vetterman from the Pics. Call them, they are great help but he will scold you about not using Moose Milk.
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  #3  
Old 12-30-2014, 04:06 PM
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JonJay JonJay is offline
 
Join Date: Jan 2007
Location: Battleground
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Lose the wrap. Larry will school you on that too. It is impossible to inspect for cracks with that stuff on. It is also debatable on the benefit, if any...
You should inspect for cracks every time the cowl is off. It should never get
to the point of something "falling off".
Sorry about your troubles. Larry will get you fixed up.
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  #4  
Old 12-30-2014, 04:17 PM
David Paule David Paule is offline
 
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Location: Boulder, CO
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Default

Any damage from the exhaust impingement?

Dave
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  #5  
Old 12-30-2014, 04:50 PM
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AlexPeterson AlexPeterson is offline
 
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Location: Ottertail, MN
Posts: 2,458
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Replace the entire exhaust - the wrap makes the pipe run a lot hotter. Hot steel = weaker steel. Not to mention what happens if oil drips onto that wick.

Take a good look at the motor mount also - maybe it is just reflections on the photo, but it appears there was some sort of work done on it while it was in place, as evidenced by over spray of paint on the firewall.

These are friendly, but strong, suggestions relating to safety. You are lucky there was no fire.
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RV6A N66AP 1750+ hours
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  #6  
Old 12-30-2014, 05:39 PM
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ccsmith51 ccsmith51 is offline
 
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Location: Orlando, FL
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Default Thanks all...

I will send the pictures to Larry and be prepared for a scolding!!!!

There was no damage that I could see from the loss of the pipe.

I, as well as my very conservative A&P good friend, have looked over the engine mount and found nothing wrong.

I will remove all the wrap and inspect the rest of the exhaust. I will discuss a partial or full replacement with Larry.

Any other comments and suggestions are welcome. We all live, and learn, each and every day....
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Chris Smith
Maule M5-180C (Sold)
RV-6 O-360 CS (Sold)
RV-4 O-360 FP (Sold)
Full-time in the other type of RV....
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  #7  
Old 12-30-2014, 05:44 PM
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Walt Walt is offline
 
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Location: Dallas/Ft Worth, TX
Posts: 6,336
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Do yourself a favor and junk that entire exhaust system and get yourself a new one from Vetterman.
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EXP Aircraft Services LLC
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  #8  
Old 12-30-2014, 05:47 PM
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ccsmith51 ccsmith51 is offline
 
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Walt, that is what I am leaning towards. I sent Larry an e-mail with photos to learn of his opinion.
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Chris Smith
Maule M5-180C (Sold)
RV-6 O-360 CS (Sold)
RV-4 O-360 FP (Sold)
Full-time in the other type of RV....
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  #9  
Old 12-30-2014, 06:09 PM
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Lemmingman Lemmingman is offline
 
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Location: McKinney, TX
Posts: 689
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Hi Chris,
I hate to dog-pile here, but assuming you get a new exhaust and assuming you don't wrap it I would seriously look into changing the zip ties that are holding the insulation around the fuel line.
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RV7 - Working on fuse, fuel, brakes etc...
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  #10  
Old 12-30-2014, 06:16 PM
RVDan RVDan is offline
 
Join Date: Jun 2012
Location: Frederick, MD
Posts: 942
Unhappy

I might also suggest getting the old rag/ rubber type flex fuel line replaced with stainless braid over teflon (Aeroquip 666 hose or equivilent) and a lot further from the exhaust.
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Dan Morris
Frederick, MD
PA28-140
Hph 304CZ
RV6 built and sold
N199EC RV6A flying
Retired Aerospace Engineer and A&P/IA
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