VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #1  
Old 11-21-2015, 07:45 PM
Taildrgr's Avatar
Taildrgr Taildrgr is offline
 
Join Date: Jun 2011
Location: DFW Area, TX
Posts: 229
Default Exhaust Hanger Broken

During my preflight I grab the exhaust extension below the cowl exit and give it a good shake.

At 16 hours into Phase I, my right pipe was loose.

Looking into the cowl exit with a flashlight showed a broken exhaust hanger.

My hangers are connected to the engine sump so the exhaust moves with the engine.

I called Clint at Vetterman Exhaust and he said the hanger tubes can break if they are bent for fitting during installation.
As can be seen in the pics, mine is not bent.
Clint also said they have had some rare breaks for unknown reasons, perhaps a defect in the crimped end.

I think I will move the cross piece up a bit to make sure it does not rub on the nose gear mount.

Anyway, I replaced the hanger tube and will continue checking them during preflight.

Just wanted to give a heads up to all about checking those exhaust hangers.



I put the hanger back together for this picture.....
__________________
Bob B
RV-7A Sold
RV-4 Sold
DFW TX
Dues Paid
Reply With Quote
  #2  
Old 11-21-2015, 07:51 PM
Kyle Boatright Kyle Boatright is offline
 
Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,677
Default

The components in the exhaust hangar system break frequently. I carry a spare set in my fly-away kit.
__________________
Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
Reply With Quote
  #3  
Old 11-21-2015, 09:18 PM
Infidel's Avatar
Infidel Infidel is offline
 
Join Date: Sep 2011
Location: WV22
Posts: 849
Default

A little jiggle on the exhaust pipes is always a part of my preflight and glad to see others (you) doing it as well.
__________________
RV-4 0320\D3G 160, Whirlwind 200GA 70".
Reply With Quote
  #4  
Old 11-21-2015, 09:45 PM
LifeofReiley's Avatar
LifeofReiley LifeofReiley is offline
 
Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,779
Default

It does happen, a lot going on in this area.
__________________
Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
Reply With Quote
  #5  
Old 11-21-2015, 10:22 PM
Sam Buchanan's Avatar
Sam Buchanan Sam Buchanan is offline
been here awhile
 
Join Date: Dec 2004
Location: North Alabama
Posts: 4,466
Default Been a problem for as long as RVs have had exhaust systems

Been flying my RV-6 for 16 years and broken exhaust hangars were a known issue when my plane was new. I carry a length of steel automotive brake line in the flight kit so a new hanger can be fabricated on short notice. Fortunately a broken hangar usually won't keep you from flying the plane home.
__________________
Sam Buchanan
RV-6
Reply With Quote
  #6  
Old 11-21-2015, 10:24 PM
az_gila's Avatar
az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
Smile

Quote:
Originally Posted by Kyle Boatright View Post
The components in the exhaust hangar system break frequently. I carry a spare set in my fly-away kit.
That's a good case for installing the bolts in a "backwards" from standard fashion with the nuts facing out.

Would make a replacement easier with less clamping tools involved in the field.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
Reply With Quote
  #7  
Old 11-22-2015, 07:14 AM
Taildrgr's Avatar
Taildrgr Taildrgr is offline
 
Join Date: Jun 2011
Location: DFW Area, TX
Posts: 229
Default

Hopefully, this won't be a recurring problem every 16 hours, but I did order 2 extra hanger pieces from Clint just in case!

It only took about 20 minutes to change it out.

Good idea to put one in my travel kit for long x-cntry's.
__________________
Bob B
RV-7A Sold
RV-4 Sold
DFW TX
Dues Paid
Reply With Quote
  #8  
Old 11-22-2015, 07:29 AM
turbo's Avatar
turbo turbo is offline
 
Join Date: Jan 2007
Location: Stuart, FL /Hartford, CT/Virgin Gorda,BVI
Posts: 3,176
Default

I replaced all of my with pieces made out of solid steel. I flattened out the ends of the steel rod and now have a bullet proof system that will never brake.
__________________
TURBO YES =VAF= Payed Jan2021
Ed D'Arcy
RV6-A 5,300+ hrs, R-44 1,600 hrs, Helicycle traded for 33 FFR coupe, 300 young eagles flown
Stuart, Fl / East Hampton,Ct / Virgin Gorda, BVI - villa sold.
VAF #840 EAA AOPA FAC FABA QB SPA
addicted pickle ball player
https://i.postimg.cc/tn3h4svg/IMG-3101.jpg
Reply With Quote
  #9  
Old 11-22-2015, 12:16 PM
posterman posterman is offline
 
Join Date: May 2007
Location: Redding, CA
Posts: 96
Default

I converted my upright tubing running from the exhaust to the back of the sump to very thick walled 4130 chrome moly - required MAPP gas to heat the ends sufficiently well to pound out flats for the bolts...no breakage in over 450 hours.
Reply With Quote
  #10  
Old 11-23-2015, 06:17 AM
Steve Melton's Avatar
Steve Melton Steve Melton is online now
 
Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 3,529
Default

what about a washer between the hangar and bracket to give it more room to move?
__________________
Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com

Last edited by Steve Melton : 11-23-2015 at 10:54 AM.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 08:55 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.