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07-09-2013, 08:59 AM
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Join Date: Aug 2005
Location: Annapolis MD
Posts: 22
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RV-8 rear baggage smoke tank?
Looking for any information on experience with a low profile rear baggage area smoke tank.
Jerry
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07-09-2013, 03:00 PM
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Join Date: Jul 2007
Location: Pembrokeshire, UK
Posts: 224
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Hi Jerry. If you have your battery on the firewall you could build a custom one to go on the rear battery tray - see here
__________________
Bob Ellis
www.rv-8.co.uk
G-JBTR Having a ball flying this wonderful machine
Donation July 2016
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07-13-2013, 05:07 PM
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Join Date: Apr 2007
Location: Montgomery, TX
Posts: 43
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Tank
The previous system looks a little difficult to service. I have my battery in back and a 6 gallon tank strapped to the floor. With oil it would be dofficult to lift onto the shelf and may be a bit heavy for the shelf. Pump is attached to tank. I take it out to service or when I don't need it. Hydraulic quick disconnects on supply and vent and a molex plug for electric. Been blowing smoke for 8 years.
Just had a new issue come up. I clean my nozzles at annual but noticed weak smoke. Found the AN fitting attached to the nozzle had coked up. Makes sense. It's exposed to the same heat as the nozzle.
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Joe
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07-19-2013, 07:31 AM
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Join Date: May 2005
Location: Evergreen, CO
Posts: 48
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Smoke oil tank aft on RV-8
Just curious why the aft location? It seems to me the RV-8 front cargo is the primo location of any of the RV models, for many reasons. It's closest to the center of gravity of the airplane. I notice no difference whether the tank is installed or not, full or empty. It's MUCH easier to fill, you don't have to move a seat and who knows what else to get at it, so it's more convenient and you'll be less likely to spill oil all over your airplane. The tank is much easier to remove if you just want it out of the airplane. Front cargo offers a much shorter and easier routing for the plumbing, you don't have to find a way to get around the main spar. And with a 35 to 40 pound tank, times 6 G's, that's a lot of weight to support, right above your elevator push pull tube.
Jim Gray
www.rmrairshows.com
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07-19-2013, 08:56 AM
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Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
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Quote:
Originally Posted by panhandler1956
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Serviceability aside, a remote fill on the fuse would work fine here. However, as others have mentioned, that is pretty far back and would absolutely be a CG nightmare. IF it were a fixed weight, well it could be compensated for in other ways. However, given that the weight will go from being there, to not being there, that would greatly impact the flying characteristics over the flight envelope in a short period of time.
FWD baggage has its issues, primarily with leaks, spills, and taking up valuable useful space. I understand the logic of getting it into an otherwise unusable space.. However, I do not like this solution.
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Kahuna
6A, S8 ,
Gold Hill, NC25
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07-19-2013, 09:13 PM
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Join Date: May 2008
Location: Sacramento
Posts: 377
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Front smoke tank
I put mine in the well of the forward baggage 3 gallon tank works great. Pull it out in 3 min. quick connectors and oil and electric.
__________________
Horse Power is good, more is better and
Too Much is Just Right
RV 8 Super charged Barrett IO-390
Dues paid 2020
Dan "Nordo" West
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07-20-2013, 05:17 AM
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Join Date: Jun 2006
Location: Ohio
Posts: 1,686
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Quote:
Originally Posted by Kahuna
Serviceability aside, a remote fill on the fuse would work fine here. However, as others have mentioned, that is pretty far back and would absolutely be a CG nightmare. IF it were a fixed weight, well it could be compensated for in other ways. However, given that the weight will go from being there, to not being there, that would greatly impact the flying characteristics over the flight envelope in a short period of time.
FWD baggage has its issues, primarily with leaks, spills, and taking up valuable useful space. I understand the logic of getting it into an otherwise unusable space.. However, I do not like this solution.
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Kahuna,
Good points! I forgot to mention that I have an external filler port for this tank. My airplane runs right up against the fwd CG limit with just me in the airplane so it flies much better with the tank full. In my testing, it goes from flying great to good over the range between full and empty, which is definitely a consideration. The the other challenge I have with this location is draining it if I want to haul a larger passenger - I haven't solved this yet, just need to get it done.
You are correct, it's not the perfection solution, just another option.
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07-20-2013, 07:00 AM
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Join Date: May 2005
Location: Evergreen, CO
Posts: 48
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Quote:
Originally Posted by panhandler1956
The the other challenge I have with this location is draining it if I want to haul a larger passenger
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Put a bucket under the exhaust and pump it out.
Gringo
www.rmrairshows.com
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07-20-2013, 02:36 PM
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Join Date: Jun 2006
Location: Ohio
Posts: 1,686
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Quote:
Originally Posted by n747jg
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Good idea!
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