VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-12
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 07-25-2017, 01:32 AM
magiccarpet's Avatar
magiccarpet magiccarpet is offline
 
Join Date: Feb 2013
Location: Switzerland, Europe
Posts: 151
Default Clearance of exhaust pipe in lower cowl

I have noticed that I need to make the cutout for the exhaust pipe in the lower cowl a bit larger. I am unsure what minimum clearance shall be achieved around the pipe to prevent damage from heat. I don't have the assembly instruction right here, but I can not recall that Van's specified a dimension there.
I target a clearance of 1/2". Is that enough?
Thank you !
__________________
Chris, RV-12 HB-YSC
acceptance procedure in progress

Facebook: http://www.facebook.com/magic.carpet.aviation
12-Town:http://12town.com/profile/Chris
=VAF= dues paid for 2018
Reply With Quote
  #2  
Old 07-25-2017, 05:50 AM
snopercod's Avatar
snopercod snopercod is offline
 
Join Date: Aug 2016
Location: Asheville, NC
Posts: 1,200
Default

Are you worried about clearance for the heat or for the vibration?
__________________
(2018 dues paid)
Reply With Quote
  #3  
Old 07-25-2017, 06:00 AM
magiccarpet's Avatar
magiccarpet magiccarpet is offline
 
Join Date: Feb 2013
Location: Switzerland, Europe
Posts: 151
Default

Quote:
Originally Posted by snopercod View Post
Are you worried about clearance for the heat or for the vibration?
I am more concerned about the heat. For vibration I think 1/2" around the pipe is more than enough.
__________________
Chris, RV-12 HB-YSC
acceptance procedure in progress

Facebook: http://www.facebook.com/magic.carpet.aviation
12-Town:http://12town.com/profile/Chris
=VAF= dues paid for 2018
Reply With Quote
  #4  
Old 07-25-2017, 08:09 AM
DHeal DHeal is offline
 
Join Date: Sep 2006
Location: Windsor, California
Posts: 691
Default

IMHO, 1/2" clearance is sufficient. However, you may find yourself increasing this clearance somewhat to facilitate installation and removal of the lower cowling.
__________________
David Heal - Windsor, CA (near Santa Rosa)
EAA #23982 - EAA Technical Counselor and Flight Advisor; CFI - A&I
RV-12 E-LSA #120496 (SV w/ AP and ADS-B) - N124DH flying since March 2014 - 650+ hours (as of July 2018)!
VAF donation through June 2019.
Reply With Quote
  #5  
Old 07-25-2017, 04:32 PM
snopercod's Avatar
snopercod snopercod is offline
 
Join Date: Aug 2016
Location: Asheville, NC
Posts: 1,200
Default

I have no special knowledge but went with 1" of clearance on my plane. Different airplane, I know, but here's what my cowling exit looks like. The "down turns" are for two reasons. 1: Noise. The straight pipes caused a racket in the cockpit, and 2. Now the exhaust doesn't leave residue on the bottom of my plane:

__________________
(2018 dues paid)
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 01:42 PM.


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.