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  #1  
Old 01-03-2019, 06:37 AM
jeffvw jeffvw is offline
 
Join Date: Jan 2019
Location: Portland, ME
Posts: 3
Default RV-12 cabin air gaps in winter flying

Our flying club in Maine just bought an RV-12. We have a pre-heat system and winterization kits, so the plane is happy enough even with -10°C. The pilots, however ...

Air flows through the cabin from the forward left and right edges of the canopy at the hinges, from along the side rails, out the rear where it curves over the roll bar, and just generally around the cabin.

What recommendations do people have for materials and how-to for closing up some of these gaps for winter flying?

Thanks in advance everyone. Such a fun plane to have in a club when the others are 172s.
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  #2  
Old 01-03-2019, 07:01 AM
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scottmillhouse scottmillhouse is offline
 
Join Date: Apr 2007
Location: Madison, AL
Posts: 266
Default Weatherstrip kit

Does it have Vans weatherstrip kit installed? If not download plans and in particular add the foam near the cowl hinges. I only get drafts from center between the seats around rear of flaperon handle. A good place to cover up with your jacket.
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Scott- 2019 dues paid
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  #3  
Old 01-03-2019, 08:37 AM
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Piper J3 Piper J3 is offline
 
Join Date: Nov 2014
Location: Hinckley, Ohio
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Default

This helps... http://www.vansairforce.com/communit...8&postcount=26

RV-12 Winterization Kit... are you blocking both oil cooler (large baffle) and water radiator (blade fully inserted)? If you do both, you should get lots of heat pouring into the cabin even below 30F.
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Hinckley, Ohio (1OA2)
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
RV-12 E-LSA #120058 AWC July 2012 N633CM
RV-12 Bought Flying Oct 2015 with 48TT - Hobbs now 421

LSRM-A Certificate 2016
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Last edited by Piper J3 : 01-03-2019 at 08:41 AM.
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  #4  
Old 01-03-2019, 08:41 PM
rk2436 rk2436 is offline
 
Join Date: Aug 2013
Location: chicago,ol
Posts: 44
Default

I switched out the Vans weatherstripping on the canopy side rails for some D section weatherstripping. I stuff a couple of shop towels in by the spars. I have different length block off plates for both the coolers. Need water temp above 190 to get any kind of effective heat. I also picked up a cheap automotive heated seat cushion this year. It works good.
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  #5  
Old 01-04-2019, 05:28 AM
BigJohn BigJohn is offline
 
Join Date: Nov 2008
Location: Gloversville, NY
Posts: 1,572
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I winterized my cockpit long ago before Van’s offered a kit. Went to the Aircraft Components and Equipment store (ACE) and bought one each of every kind of foam weather stripping they carried. Then over a succession of flights sealed every air entry location with whichever product fit best.
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  #6  
Old 01-06-2019, 11:43 AM
jeffvw jeffvw is offline
 
Join Date: Jan 2019
Location: Portland, ME
Posts: 3
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Quote:
Originally Posted by Piper J3 View Post
This helps... http://www.vansairforce.com/communit...8&postcount=26

RV-12 Winterization Kit... are you blocking both oil cooler (large baffle) and water radiator (blade fully inserted)? If you do both, you should get lots of heat pouring into the cabin even below 30F.
We do, but so much cold air leaks in it’s of little help.
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  #7  
Old 01-06-2019, 11:50 AM
jeffvw jeffvw is offline
 
Join Date: Jan 2019
Location: Portland, ME
Posts: 3
Default

Quote:
Originally Posted by scottmillhouse View Post
Does it have Vans weatherstrip kit installed? If not download plans and in particular add the foam near the cowl hinges. I only get drafts from center between the seats around rear of flaperon handle. A good place to cover up with your jacket.
I haven’t been able to find those plans. Do you have a link?
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  #8  
Old 01-06-2019, 12:43 PM
DHeal DHeal is offline
 
Join Date: Sep 2006
Location: Windsor, California
Posts: 787
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https://www.vansaircraft.com/cgi-bin...12-canopy-seal

https://www.vansaircraft.com/pdf/rev...2/RV-12_34.pdf
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  #9  
Old 01-06-2019, 05:41 PM
dpemmons dpemmons is offline
 
Join Date: Apr 2017
Location: San Francisco, CA (KDVO)
Posts: 24
Default

The canopy seal kit mentioned above really helps a lot. I recently sealed up my canopy with that kit before a cross country from California to Wisconsin for the holidays and it worked well. When installing keep in mind you're working to prevent suction pulling air out as much (or more!) as preventing ram pressure pushing air in. I'm still finding spots where there's suction; for example I left the rubber the original builder added to the canopy side rails and now that the front and back are well sealed I've noticed some suction out the sides, which I really didn't expect.

Another suggestion is the "Bender Baffle" to slow down air going through the water radiator; this makes cabin heating *much* more effective. Between the two mods I was warm (sometimes too warm!) and comfy the whole trip with just a few drafts, mostly around the wing spars.
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  #10  
Old 01-06-2019, 06:15 PM
JBPILOT JBPILOT is offline
 
Join Date: Nov 2007
Location: Jesup, Iowa
Posts: 1,627
Default Thanks Dale - -

Best mod I have done so far. Force the CHT's up to 205 - 210, and you will have lots of heat.
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