VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-10
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #21  
Old 11-16-2018, 07:02 AM
Bill.Peyton's Avatar
Bill.Peyton Bill.Peyton is offline
 
Join Date: Sep 2009
Location: St. Louis, MO
Posts: 1,658
Default

Gil, I don't remember the exact gap. Try a small piece and shoot for 25% and see what that gives you. I remember making a gap tool, I just don't remember the number...
__________________
Bill Peyton
RV-10 - 890
First Flight Oct 2012
WA0SYV
Aviation Partners, LLC
Reply With Quote
  #22  
Old 11-17-2018, 08:54 AM
az_gila's Avatar
az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 9,806
Smile

Quote:
Originally Posted by az_gila View Post
Since I'm still sanding and making dust so I can use the just under 5/16 dimension. I have the very lumpy green cabin cover so keeping the 1/4 edge thickness is going to take quite a bit of work anyway.

With your numbers, a 40% compression of the 3/8 bulb gives a 0.300 gap, just under the 0.3125 (aka 5/16) guess I made.

I think I'll simply aim for a 0.300 gap with my existing seal.
Looking further at the McMaster-Carr catalog, this seems the way to go.

If in operation the bulb is not compressed enough or loses 'squish', the next size up seal is identical except for a 7/16 bulb instead of 3/8. This would be an extremely easy change to make if needed.

https://www.mcmaster.com/1120a421

Always good to have a back-up plan...
__________________
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
  #23  
Old 11-17-2018, 10:49 AM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
Posts: 4,635
Default Sidebar

Mel, I was curious about some seals so took a piece of al sheet and attached a the seal around the perimeter, used spacers and clamped to a second sheet. Then pressurized it with a pressure regulator to see how it worked. You would not need more than 1.5 psi. Solid elastomer design guideline is 20% compression target. Like o-rings etc. A 16 in^2 test area is plenty.

My greatest issue on my tipper was the force per foot at compression. It was too much for the initial preload to fully engage the latches. So, a better seal can be too much, as you found out.
__________________
Bill

RV-7
1st Flight 1-27-18
Phase II 8-3-18
Repairman 11-15-18
Instrument Currency 12-17-18
Reply With Quote
  #24  
Old 01-06-2019, 01:09 PM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 3,419
Default

Finally got my doors fully mounted on the attached cabin top, after taking a break to do wiring, and thought I would post my results. I maintained a minimum gap of 1/4" and it varied to 5/16" is some spots. The vast majority was 1/4". I put on the 3/8" bulb seal and it was impossible to fully close the door, but none of the seal was fully compressed. I used a couple of clamps to help compress the seal in the upper part of the door and the pins went in without too much difficulty. I let it sit for 24 hours for the seal to take a "set." Next day, I am able to open and close the door without much difficulty. Over time, I expect it to get even better.

I was pretty concerned after reading and analyzing all of this, having already set up a 1/4" gap, but it worked out ok. If I was doing it again, I would shoot for a 5/16" gap with the 3/8" seal. That would leave the seal in it's optimum compressed position.

Larry
__________________
N64LR
RV-6A / IO-320, Flying as of 8/2015
RV-10 in progress
Reply With Quote
  #25  
Old 01-06-2019, 07:32 PM
majuro15's Avatar
majuro15 majuro15 is offline
 
Join Date: Feb 2013
Location: Charlotte, NC
Posts: 485
Default

I just finished my door seals and woof, I made a lot of dust. The 1/4" was no where close to being enough of a gap, as others have mentioned. Mine does vary in spots, but I found having a sacrificial seal for the whole frame was easiest. I also wound up slicing the little rubber flap from inside the channel off to provide more clearance. I'll try and get a few measurements of the actual gap and post them tomorrow.
__________________
www.N1017H.com
Tim Huneycutt, Capt, NCANG
RV-10 Finish kit under construction
N1017H Reserved
EAA #: 1106970
2019 VAF Dues Paid!
Reply With Quote
  #26  
Old 01-06-2019, 11:55 PM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 3,419
Default

Quote:
Originally Posted by majuro15 View Post
I just finished my door seals and woof, I made a lot of dust. The 1/4" was no where close to being enough of a gap, as others have mentioned. Mine does vary in spots, but I found having a sacrificial seal for the whole frame was easiest. I also wound up slicing the little rubber flap from inside the channel off to provide more clearance. I'll try and get a few measurements of the actual gap and post them tomorrow.
We must have different seal types. My seal has the rubber flap on the side of the channel opposite that of the bulb seal. Therefore it has no impact on the door to frame clearance. If the flap is on the bulb side of the channel on your seal, that may explain why you need more clearance.

Larry
__________________
N64LR
RV-6A / IO-320, Flying as of 8/2015
RV-10 in progress

Last edited by lr172 : 01-07-2019 at 12:11 AM.
Reply With Quote
  #27  
Old 01-07-2019, 07:57 AM
majuro15's Avatar
majuro15 majuro15 is offline
 
Join Date: Feb 2013
Location: Charlotte, NC
Posts: 485
Default

Larry, I have the McMaster Carr seal that fits 3/16" edge and has a 3/8" bulb. Interesting that your's has teh flap on the opposite side. Did you get your seal from Grainger?
__________________
www.N1017H.com
Tim Huneycutt, Capt, NCANG
RV-10 Finish kit under construction
N1017H Reserved
EAA #: 1106970
2019 VAF Dues Paid!
Reply With Quote
  #28  
Old 01-07-2019, 09:06 AM
az_gila's Avatar
az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 9,806
Exclamation

Quote:
Originally Posted by majuro15 View Post
Larry, I have the McMaster Carr seal that fits 3/16" edge and has a 3/8" bulb. Interesting that your's has teh flap on the opposite side. Did you get your seal from Grainger?
It's a simple part number issue.

https://www.mcmaster.com/1120A411 vs https://www.mcmaster.com/1120A413

The above numbers are for a 1/4 edge fit. There is a similar correspondence for 3/16 edge fit parts.
__________________
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
  #29  
Old 01-07-2019, 11:38 AM
rocketman1988 rocketman1988 is offline
 
Join Date: Jun 2010
Location: Sunman, IN
Posts: 1,254
Default and...

There are also different part numbers for the rubber barb being on the inside versus the outside...
__________________
Bob
Aerospace Engineer '88

RV-10
Structure - 90% Done
Cabin Top - Aaarrghhh...
EFII System 32 - Done
290 HP Barrett Hung
ShowPlanes Cowl with Skybolts Fitted - Beautiful
Wiring...

Dues Paid 2018,...Thanks DR+
Reply With Quote
  #30  
Old 01-07-2019, 05:50 PM
az_gila's Avatar
az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 9,806
Smile

Quote:
Originally Posted by rocketman1988 View Post
There are also different part numbers for the rubber barb being on the inside versus the outside...
https://www.mcmaster.com/1120A411 vs https://www.mcmaster.com/1120A413
__________________
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
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 02:49 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.