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  #21  
Old 12-09-2020, 05:43 AM
chckwlsn@yahoo.com chckwlsn@yahoo.com is offline
 
Join Date: Mar 2005
Location: Texas
Posts: 44
Default RV 14 Heat muff

I just replaced one on the forward most muff.
Terry at Vans helped with the drawings it is Vans part number EX-00013C.
Will be watching it closely
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  #22  
Old 12-09-2020, 10:25 AM
rvbuilder2002's Avatar
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,203
Default

We have noted a lack of longevity of the heat muff end ribs and it is currently being looked at by engineering.
More info when I have it.

In the mean time, be sure to do a thorough exhaust system inspection during each condition inspection in accordance with AC43.13 Appendix D.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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  #23  
Old 12-09-2020, 10:39 AM
JDA_BTR JDA_BTR is offline
 
Join Date: Dec 2013
Location: Baton Rouge, LA
Posts: 1,218
Default

Talked with Rick Robbins. What is the diameter of the muff? If it is 2-3/4 then his endplates can work with our muff bodies.
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Ser 140142, RV-14A flying - N1463
Ser 83825, RV-8 building - N8638?
USN Ret, Urologist, AME, Repeat Offender
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  #24  
Old 12-09-2020, 04:53 PM
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jeffw@sc47 jeffw@sc47 is offline
 
Join Date: Aug 2014
Location: Simpsonville, SC (SC47)
Posts: 366
Default Priority one

So glad to hear that Van's is looking into this.

Obviously, the most serious result of a leak from the exhaust into the heat muff would be CO poisoning. And a failure would start with a very small leak that would easily go unnoticed in its early stages unless the CO in the cockpit was being monitored.

I am nearing completion and think that I may be doing first flight in a couple of months. I'll will watch this closely and look into getting a CO monitor which now has a higher priority.
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Jeff Warren
Simpsonville, SC (@SC47 > 10nm NW Triple Tree)
1946 Bellanca Cruisair 14-13-2 (74 YRS OLD 8/1/20)
RV14A (N14ZT), Ser#140195, Start 10/11/14
Contribution made 12/2/20 (USArmy 2/67-2/70)
www.mykitlog.com/jeffw@sc47
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  #25  
Old 12-09-2020, 06:25 PM
GOFT GOFT is offline
 
Join Date: Nov 2013
Location: Canada
Posts: 23
Default

Quote:
Originally Posted by JDA_BTR View Post
Talked with Rick Robbins. What is the diameter of the muff? If it is 2-3/4 then his endplates can work with our muff bodies.
Muff OD is 2-3/4".
Thanks for the lead to Rick Robbins.
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  #26  
Old 12-09-2020, 07:37 PM
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bmarvel bmarvel is offline
 
Join Date: Aug 2005
Location: Grand Junction, CO
Posts: 98
Default Follow up information

Quote:
Originally Posted by JDA_BTR View Post
Talked with Rick Robbins. What is the diameter of the muff? If it is 2-3/4 then his endplates can work with our muff bodies.
I checked today. The exhaust pipe is 1 3/4 and the muff is 2 3/4. Clint at Vetterman told me Rick Robbins is pretty much retired and has closed down his web site.

As Scott posted, Van's is working on this now and if Rick can still make up end plates, it looks like we can use the existing skins. I have a call into Rick but have not heard back yet.

I'm making up some end plate doublers and clamping angles that will work in a pinch to strengthen the Van's end plates I have on order and allow them to be clamped to the exhaust pipe. It isn't elegant but should work if I cannot get something better from Rick Robbins or Van's. I'm AOG now and neither I nor my airplane like that!
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Bill Marvel, ATP, A&P/IA
Grand Junction, CO
RV-8A N751MB -1700 hours, sold
Zenith 801 sold
RV-14A 140134, N465MM - 721 hours and climbing
Dues paid every year
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  #27  
Old 12-09-2020, 07:49 PM
JHartline JHartline is offline
 
Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 274
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Bill, did Clint mention where hes getting his heat muffs from if Rick is retired?
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James Hartline
Carrollton, GA 5GA2
RV-14 - First flight 4/7/2019. Phase I complete as of 9/11/2019!!
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  #28  
Old 12-09-2020, 07:52 PM
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bmarvel bmarvel is offline
 
Join Date: Aug 2005
Location: Grand Junction, CO
Posts: 98
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Quote:
Originally Posted by JHartline View Post
Bill, did Clint mention where hes getting his heat muffs from if Rick is retired?
No, but I never asked him either. Clearly, he needs a supplier. He did read this thread so maybe he'll pop up with an answer to that question.
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Bill Marvel, ATP, A&P/IA
Grand Junction, CO
RV-8A N751MB -1700 hours, sold
Zenith 801 sold
RV-14A 140134, N465MM - 721 hours and climbing
Dues paid every year
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  #29  
Old 12-10-2020, 07:39 AM
JHartline JHartline is offline
 
Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 274
Default

Jeffw@sc47 - check your PMs
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James Hartline
Carrollton, GA 5GA2
RV-14 - First flight 4/7/2019. Phase I complete as of 9/11/2019!!
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  #30  
Old 12-10-2020, 10:17 AM
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jeffw@sc47 jeffw@sc47 is offline
 
Join Date: Aug 2014
Location: Simpsonville, SC (SC47)
Posts: 366
Default James - got it

Thanks, looks like a good option.

I went ahead and bought a Klein Tools CO Meter - ET110 to try before I put in a mounted unit. The ET110 is nice because it displays the PPM, uses 4-AAA batteries, a clip on the back side to hang it somewhere, has a 2 yr warranty and the sensor can be expected to go for 5 years before replacement - current cost to update sensor is $50.

I had not come across the GD-40 in previous searching, I like its features, price, and that it is mounted remotely.
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Jeff Warren
Simpsonville, SC (@SC47 > 10nm NW Triple Tree)
1946 Bellanca Cruisair 14-13-2 (74 YRS OLD 8/1/20)
RV14A (N14ZT), Ser#140195, Start 10/11/14
Contribution made 12/2/20 (USArmy 2/67-2/70)
www.mykitlog.com/jeffw@sc47
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