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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › OMI Fuel Magnet weights
03-31-2009 09:27 PM  9 years agoPost 1
Dood

rrProfessor

Wescanson

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Anyone using weights on their fuel magnets to help ensure they stay in the fuel?

Even with the flexible Hayes clunk line, the Fuel Magnet sometimes wants to stick straight out, almost as if it's neutrally buoyant.

I put a little brass nut on there to make it sink, just curious is anyone else actually bothers with it.

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03-31-2009 09:34 PM  9 years agoPost 2
psych-lick

rrKey Veteran

Portland, OR

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i just let mine float - never been an issue.

-Jeff T.

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03-31-2009 10:22 PM  9 years agoPost 3
AMainMaker

rrKey Veteran

Nappanee,IN

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They state in the instructions that it is a light clunk but when weighted with fuel it acts the same. I haven't tried one yet but everyone I have seen used has been sitting in the bottome of the tank like its supposed to.
Jason

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03-31-2009 10:47 PM  9 years agoPost 4
Ghostrider

rrElite Veteran

San Diego, CA

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They state in the instructions that it is a light clunk but when weighted with fuel it acts the same. I haven't tried one yet but everyone I have seen used has been sitting in the bottome of the tank like its supposed to.
I was going to say the same thing. Once you get the foam filled up with fuel, it will stay in the fuel. I have never used weights and I have never had a problem.

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03-31-2009 11:08 PM  9 years agoPost 5
Dood

rrProfessor

Wescanson

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Once you get the foam filled up with fuel, it will stay in the fuel.
I know what you're saying, but they BARELY stay in the fuel.
They do sink, gradually. But for the most part, they're neutrally buoyant. with a half tank of fuel, I'm seeing the FM hanging out near the surface most of the time.

My biggest concern was if, during fast tic-tocs or something, if the fuel magnet can move as fast as a clunk.

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03-31-2009 11:09 PM  9 years agoPost 6
MooneyDriver

rrVeteran

Kent, Ohio

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I had to put a nut on mine. It pulled air without it! I think I like the OS "bubbleless" clunk a little better...

-Neil

Hey man, why does my lipo get bigger every time I charge it?

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03-31-2009 11:11 PM  9 years agoPost 7
Kelly Fairbanks

rrApprentice

Twin Falls Idaho

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I had the exact same result as you,thought something must be wrong and took it off.

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03-31-2009 11:17 PM  9 years agoPost 8
co_rotorhead

rrVeteran

Centennial, CO, USA

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You have to remember that the foam is effectively a sponge. Even if it you get it hangin' out of the fuel for a few seconds, there's plenty of fuel absorbed in the foam to keep your engine running.

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03-31-2009 11:48 PM  9 years agoPost 9
S76 Mech

rrElite Veteran

Hatboro, Pa.

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I put a heavy stainless washer on the end of mine, keeps it in the fuel at all times.

Gaui Greatness X7, X5, NX4, X3

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04-02-2009 03:14 AM  9 years agoPost 10
alex 911

rrApprentice

puerto rico

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I happend the same to me and after a while it went to the bottom ...I think the nitro made the fuel line more flexible and its working for me

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04-02-2009 04:34 AM  9 years agoPost 11
RayoVac

rrVeteran

raptor4ever is a THIEF!!!

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I had the OMI Fuel Magnet on my 600N for a bit, it sunk to the bottom right away. I never really saw it float.

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04-02-2009 12:47 PM  9 years agoPost 12
cba7824

rrApprentice

Cordova, Alaska - United States

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I've only seen mine always on the bottom and not floating when the fuel tank is full.

Charlie (Alaska)
TDR,Pyro30-12,Jive120HV,Vbar5Pro
Logo600,Xera4025-560,Jive80HV,Vbar5Pro

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04-02-2009 01:08 PM  9 years agoPost 13
Anthony.L

rrElite Veteran

Seattle, WA

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Mine has never floated, always sunk to the bottom of the tank...

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04-02-2009 05:54 PM  9 years agoPost 14
Dr.Ben

rrMaster

Richmond, VA, USA

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Actually, hard flying keeps the sponge soaked because the fuel is splashing all over the place. Remember that the sponge holds more than a few seconds of "reserve" fuel, so even if it bouces in and out of the fuel, it's of no consequence. I've never seen anyone weight an ELD pickup nor call for a need to do so, either.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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04-02-2009 09:37 PM  9 years agoPost 15
Mike Fortin

rrElite Veteran

USA

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It's impossible for the Fuel Magnet to suck air unless your tank is empty. The Fuel Magnet itself holds roughly 7 seconds worth of fuel in it (it's a sponge) so it's virtually impossible to draw air for any length of time.

All of my Fuel Magnets sit at the bottom of the tank.

Have Rotors, Will Fly!

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04-03-2009 02:09 AM  9 years agoPost 16
RayoVac

rrVeteran

raptor4ever is a THIEF!!!

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A number of people have commented now on the OMI sponge deteriorating and finding chunks of it lying in the tank. How many have expereinced this?

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04-03-2009 05:04 AM  9 years agoPost 17
BJames111

rrElite Veteran

San Diego, California

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Actually, hard flying keeps the sponge soaked because the fuel is splashing all over the place. Remember that the sponge holds more than a few seconds of "reserve" fuel, so even if it bouces in and out of the fuel, it's of no consequence. I've never seen anyone weight an ELD pickup nor call for a need to do so, either.

Ben Minor
Ben you always get there before I do ....lol..

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04-03-2009 05:26 AM  9 years agoPost 18
Wa11banger

rrElite Veteran

Huntsville, Al

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I have never seen one float they have always sunk in my tanks.. I have however had one deteriorate so far.

It was only a year and half old... Never been taken care of, no special treatment or anything. It basically disolved and was caught in my fuel filter. I noticed it right away or it wasnt desolved enough to cause a problem because the notice was visual not by engine issues. I replaced the element, cleaned out the filter and wammo back in the air.

Best damn fuel delivery money can buy, fits in every tank I own except the compass knight 3d and has never let me run lean or been heavy enough to fall off or tear my clunk line.

Things to note about them

If you have a peppy battery, and a fast electric fuel pump dont use them.. YOu will blow holes in the element and defeat the purpose of owning a fuel magnet. Unless you use your brain and install a seperate fill and drain line in your tank.. Easy

YOu can extend the life expectancy of a fuel magnet by clearing out the exhaust from the tank after the last flight of the day.. Fuel doesnt eat fuel magnets, the caustic exhaust does. Fill tank after last flight, remove pressure line from pipe, drain tank.. No stored exhaust fumes in tank and longer life expected from fuel magnet

If you dont fly regularly the fuel part of the left overs in your fuel tank evaporates leaving oil and other gooey sediment.. Fuel magnets soak up anything that is wet.. we call this oil soaked in this condition.. Just remove fuel magnet pop it into a small amount of fresh fuel and squeeze it about a little, Reinstall in model and fly the tar out of it..

Finally there are some people the fuel magnet is just not made for get another clunk LOL

Rick

Proud member of the Quick UK, Duralite Flight Systems, V-Blade, & KBDD team

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04-14-2009 07:00 AM  9 years agoPost 19
rocket_33

rrElite Veteran

Mount Pleasant, Michigan USA

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I think it is also related to how stiff your fuel line is. I just replaced the line in my tank and while at it replaced the element. The line I used now is a thicker wall (thus stiffer) and I notice it now seems to float. I might try putting a washer on it for more weight (lol or find softer line)

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04-14-2009 08:28 PM  9 years agoPost 20
AaronJohnson

rrElite Veteran

mason,MI

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I use hayes neoprene line with the fuel magnet. Rocket33, If you are worried about it then just fly it harder and make the fuel splash around more. Then you will be fine.

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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › OMI Fuel Magnet weights
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