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Old 03-11-2014, 09:02 AM
Sid Lambert Sid Lambert is offline
Join Date: Jul 2005
Location: North Atlanta
Posts: 1,120
Default Smoking RV-4's

So where did you RV-4 guys put your smoke tank?

I can't put mine between my legs because my radio is there.

Pictures would help.
Sid Lambert

RV-7 Sold
RV-4 - Flying - O-320 Fixed Pitch - Red over Yellow

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Old 03-11-2014, 12:18 PM
Saber25's Avatar
Saber25 Saber25 is offline
Join Date: Dec 2010
Location: Colorado
Posts: 261

Smoking airplanes system, mounted 3.5 gal tank behind rear seat in baggage area. You'll want to reinforce the baggage area floor to take nut plates and make the tank easily removable. Mine comes out in less than five minutes. I took up smoking three years ago
Build 'em light, keep it simple

I'd rather fly than tinker.

"There's a big difference between a pilot and an aviator. One is a technician, the other is an artist in love with flight."
- Elrey B. Jeppesen,
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Old 03-11-2014, 02:12 PM
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Capflyer Capflyer is offline
Join Date: Feb 2005
Location: Gaithersburg, MD
Posts: 1,101

My 3.5 gal tank is also mounted in the baggage compartment as far forward in there as possible. As Hans mentioned, reinforce the floor there. My tank is homebrew and held down with a cargo strap secured to the reinforced floor with eye hooks and some aluminum angle on the floor around the sides to keep it from slidding.
RV4/HRII Hybrid - Building
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Old 03-15-2014, 08:03 AM
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lukej lukej is offline
Join Date: Aug 2012
Location: Kansas
Posts: 49
Default My tank

"Luck" is an excuse for people that have failed at their mission to do something!
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Old 03-15-2014, 08:46 AM
fixnflyguy fixnflyguy is offline
Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,465
Default Baggage compartment

I also installed Smoking Planes 3.5 in baggage compt. I put a .040" doubler under the baggage pan to stiffen it between the stringers . Takes less than 5 minutes to remove the whole system, but I seldom do. I can set 2 soft bags with overnight gear right on top of it and still travel. The -4 baggage limit with 2 is so minimal anyway, and its important to always have at least a "gallon of smoke" with you at all times
Bill E.
8A7 / Advance NC
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Old 03-16-2014, 08:51 PM
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acam37 acam37 is offline
Join Date: Aug 2012
Location: Lufkin Tx
Posts: 760
Default Tank location

We are going to install a smoke tank right behind the firewall where the battery mounts and move the battery to the firewall. This should help keep the CG farther forward when carrying a passenger.
I will post pictures when it's completed.
Arlie Conner (A&P)
RV-4 (N124TT) Sold
RV-8 (N269CP) Sold
RV-4 (N684ML) completed 3-17-19
KOCH Nacogdoches
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Old 03-16-2014, 09:04 PM
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Kahuna Kahuna is offline
Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,419

Its been mentioned before but I cant find the thread. We had an RV-4, Bob Goodmans, where he put a tank behind the firewall. 2 angles were installed between the longerons. Then a saddle was made from some scrap I think .020 aluminum. Saddle strips were attached to the alum angle support arms. He had ordered a custom tank from somewhere on-line to his exact measurements with filler cap in his desired location. Made an access door in the skin. Sorry I dont have pics or more details. Ill try and get him to respond to this thread. It was a great location for the -4 as we all know baggage space is a premium in that plane as well as a more sensitive CG.
6A, S8 ,
Gold Hill, NC25
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Old 03-24-2014, 03:18 PM
Subob Subob is offline
Join Date: Sep 2010
Location: Temple, Ga.
Posts: 1
Default RV-4 smoke tank behind firewall

Tank is 6.75"x9.5"x18.5" and holds 5 gallons. All plumbing and pump from Smoking Airplanes. Support saddle is 0.030 sheet 18"x22"bent with 1/2" hooked ends and 7" sides and bottom. Hooked ends are supported by 3/4"x1/8" angles 7" apart and spanning the top fuselage longerons. The bungee is just to tighten the fit. The tank lifts up and out with removal of the bungee.
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Old 04-12-2014, 10:08 PM
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marv1121 marv1121 is offline
Join Date: Apr 2013
Location: N. Little Rock, Arkansas
Posts: 219
Default Smoke Tank Location

I make welded aluminum tanks and complete smoke system kits and the tank also mounts in the baggage area but I like the forward mounting idea. I keep 3 and 4 gallon tanks in stock that should fit either place. If you really want 5 gallons, it would be easy for me to make a 5 gallon tank. I have a website where you can see all the tanks and kits and they are also carried by Aircraft Spruce. Also have custom tanks for the RV-6 RV-7 RV-9 RV-8 P.S. My kits are less expensive than the other guys.
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Old 09-27-2014, 11:04 PM
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acam37 acam37 is offline
Join Date: Aug 2012
Location: Lufkin Tx
Posts: 760
Default Custom Smoke Tank

We installed the custom built tank hopefully for the last time. Everything was leak checked before going in and all the lines are hooked up. We still haven't decided where to route the fill line yet. The tank holds a little over three gallons and all the extra weight is in front of the wing spar, so it will help with rear passenger CG issues.
Arlie Conner (A&P)
RV-4 (N124TT) Sold
RV-8 (N269CP) Sold
RV-4 (N684ML) completed 3-17-19
KOCH Nacogdoches
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