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.






VAF on Twitter:
@VansAirForceNet


Go Back   VAF Forums > Model Specific > RV-6/6A
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Closed Thread
 
Thread Tools Search this Thread Display Modes
  #11  
Old 11-25-2022, 09:39 AM
MacCool's Avatar
MacCool MacCool is online now
 
Join Date: Aug 2020
Location: central Minnesota
Posts: 1,485
Default

An O-ring that looks good still might function poorly. I think that replacing the two O-rings empirically is a good idea (I’m assuming you have the usual Usher caps).

https://www.aircraftspruce.com/catal...lickkey=903068
__________________
RV-9A, 2011, bought flying
IO-320D1A (factory new), C/S
Dual Pmags
IFR equipped
AFS 5400/3500, G5, IFD440 navigator,
bunch of other stuff
  #12  
Old 11-25-2022, 09:48 AM
kenpilot kenpilot is offline
 
Join Date: Sep 2022
Location: N/A
Posts: 12
Default

Yep, I already added those o-rings to my next ACS order. Shipping is expensive, so I try to batch stuff together with oil/filters.
__________________
Kenneth
RV-6A Purchased in flying condition
RV-7A Planning to build in the next 5 years
  #13  
Old 11-25-2022, 09:50 AM
Mile High Relic Mile High Relic is offline
 
Join Date: May 2010
Location: Arvada, Colorado
Posts: 389
Default

Quote:
Originally Posted by kenpilot View Post
I do typically keep a roll of duct tape in the plane (the heavy duty stuff with the threads inside). I wonder if that would suffice in a pinch, to seal off the fill opening if I lost a cap.
I'd suggest splashing some fuel on the duct tape adhesive and observing the results.

My experience with duct tape and gas (not on an airplane) was the the gas made the duct tape adhesive turn very soft and gooey.
  #14  
Old 11-25-2022, 09:58 AM
Sam Buchanan's Avatar
Sam Buchanan Sam Buchanan is offline
been here awhile
 
Join Date: Dec 2004
Location: North Alabama
Posts: 4,681
Default

A trick that has been around a long time is to dip your finger in the fuel and spread it around the big o-ring. This quickie lube can often make the cap close better.
__________________
Sam Buchanan
RV-6
  #15  
Old 11-25-2022, 02:00 PM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 4,776
Default

Quote:
Originally Posted by Sam Buchanan View Post
A trick that has been around a long time is to dip your finger in the fuel and spread it around the big o-ring. This quickie lube can often make the cap close better.
I remember working in a gas station in the late 60's, this old guy was fueling his truck and stuck his finger in the fuel neck, and then looked over at me washing his windshield, and said "oh! feels Ethyl".....
__________________
VAF #897 Warren Moretti
2022 =VAF= Dues PAID
  #16  
Old 11-25-2022, 02:16 PM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 4,776
Default

"Krytox is a very light grease and only a thin film is required. It is chemically insoluble in nearly all solvents."

Super Lube has the same ingredients, is way cheaper and is found locally even in many ACE hardware stores and Lowes.
__________________
__________________
VAF #897 Warren Moretti
2022 =VAF= Dues PAID
  #17  
Old 11-25-2022, 07:14 PM
RV8JD's Avatar
RV8JD RV8JD is offline
 
Join Date: Jan 2005
Posts: 745
Default

Quote:
Originally Posted by kenpilot View Post
I've been trying to figure out exactly what is "fuel lube".
Fuel Lube is now called EZ Turn, but don't use it:
https://www.aircraftspruce.com/catal...ezturnlube.php
The O-rings are slightly cheaper from Van's and they will ship USPS for cheaper shipping costs. Link to Van's parts is in post #3.
__________________
Carl N.
RV-8
KAWO

Last edited by RV8JD : 11-25-2022 at 07:17 PM.
  #18  
Old 11-26-2022, 10:44 AM
BillL's Avatar
BillL BillL is online now
 
Join Date: Sep 2007
Location: Central IL
Posts: 6,916
Default Don't waste $ unless it is on hand.

Quote:
Originally Posted by gasman View Post
As you can see in the picture above, as the cap is closed, the O ring must slide on the taper to expand and hold the cap tight. If the O ring can't slide, it acts like a rubber band and pushes back.

Lube it with this..... https://www.harborfreight.com/85-gra...5a232e08734092

Attachment 34235
OK for short term, but longer term get Krytox 205 lubricant. It is the only lube that will not get dissolved by gasoline. It will stay lubricated so it will always be easy to operate and seal better.
__________________
Bill
RV-7
  #19  
Old 11-26-2022, 09:43 PM
kenpilot kenpilot is offline
 
Join Date: Sep 2022
Location: N/A
Posts: 12
Default

So lubricating the o-ring and adjusting tension did not seem to help any. The metal shoulder was already too worn out. But with the pin out, it was quite easy to file the shoulder down... not to a sharp point, but definitely squared. Now both caps have a nice click closed as I'd expect. And I have a new appreciation for fuel caps being just barely tight enough to stay in position and not over-tightened.

Thanks, all! I'll consider this resolved.
__________________
Kenneth
RV-6A Purchased in flying condition
RV-7A Planning to build in the next 5 years
Closed Thread


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 09:37 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.