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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › OMI Fuel Magnet Floating
05-02-2010 09:46 PM  8 years agoPost 1
Gernejr

rrKey Veteran

Miami, Fl

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I install a new OMI fuel magnet in my 600N and can't figure out way it floats... Anyone hseen this before? Been flying it with no problems but the last one i install on my 700n does not float. The foam magnet in the 600n is from my last order about month ago.. They both have the same fuel line and are OMI magnets..

Floating 600N

Sinking 700n

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05-02-2010 10:22 PM  8 years agoPost 2
Kenny Johnson

rrApprentice

12mile S/E of AMA Headquarters. IN-USA

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I have seen this before on my helis, I found that it was the "natural" curvature of the fuel line that was causing this. Try rotating the fuel bulkhead. Although, I have flown them this way with no ill effects.

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05-03-2010 12:17 AM  8 years agoPost 3
Dr.Ben

rrMaster

Richmond, VA, USA

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Take another look at 1/2 tank of fuel. It'll be floating at the same relative height and still in the fuel. As long as it's in the fuel, it'll work fine. A fuel magnet "stores" enough fuel for nearly 30 seconds of running. When they're in the fuel, they are nearly neutrally buoyant.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-03-2010 12:37 AM  8 years agoPost 4
baby_zyklon

rrElite Veteran

Singapore

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yes, it might be due to the curvature of the fuel line. The one on my 700N was constant sticking to one side of the tank and then I realised...it was the fuel line.

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05-03-2010 01:05 AM  8 years agoPost 5
Gernejr

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Miami, Fl

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Thanks guys just want to be sure it's not a problem. At half tank it sit the same fully in fuel just at the top. The line is thin wall 4mm od align that been holding up well.

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05-03-2010 01:24 AM  8 years agoPost 6
ckd

rrApprentice

Saugus CA

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mine was the same way on my 600. I think I just twisted the grommet causing the line to twist which helped with the floating. I've never had any problems with it floating.

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05-03-2010 05:20 PM  8 years agoPost 7
S76 Mech

rrElite Veteran

Hatboro, Pa.

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Had that on my 700, you could always install a stainless washer onto the magnet clunk, then install the element and the plastic lock washer. The wieght of the washer will be just enough to keep the whole assy at the bottom of the tank.

Gaui Greatness X7, X5, NX4, X3

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05-04-2010 11:00 AM  8 years agoPost 8
Gernejr

rrKey Veteran

Miami, Fl

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Pull it apart and changed the hose. I though i had the thin walled algin hose on it but it does now. Still floats but magnet moves with fuel great now...

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05-04-2010 11:36 AM  8 years agoPost 9
DS 8717

rrProfessor

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When i said mine floated someone here told me i was full of SH!t and proved it by putting a fuel magnet in a wine glass of water where it sank to the bottom,and posted the picture proving me wrong......

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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05-04-2010 02:07 PM  8 years agoPost 10
Gernejr

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Miami, Fl

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DS water does not have oil in it and just look at the gulf we know oil floats on water. i think i problem is hose as i can turn hose moving magnet from top to bottom if tank. now when no in fuel the magnet is heavy enough to bend hose in U shape mean magnet will follow around with fuel and know it will right. so it just using a good soft hose and not worry about it.

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05-04-2010 02:54 PM  8 years agoPost 11
DS 8717

rrProfessor

Here wishing i was somewhere else

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The only problem i had with the Fuel magnet was it desinagrated and fuked all my YS regulators,so i quit using the them and switched to the OS clunk,works just as good.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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05-05-2010 03:18 AM  8 years agoPost 12
whyfly

rrVeteran

Temecula C.A.

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+1
for OS clunk,works just as good.

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05-05-2010 10:59 AM  8 years agoPost 13
Gernejr

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Miami, Fl

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Works but not as good!

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05-05-2010 03:18 PM  8 years agoPost 14
DS 8717

rrProfessor

Here wishing i was somewhere else

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How does the Fuel magnet work better,the OS clunk gets every last drop of fuel just like the fuel magnet.What does the fuel magnet do that the OS klunk doesnt......i would like to know.The OS klunk doesnt come apart so it seems to me the OS klunk is actualy better than the fuel magnet,it also cheaper in the long run also.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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05-05-2010 03:59 PM  8 years agoPost 15
puma1824

rrVeteran

Maryland, USA

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How does the Fuel magnet work better,the OS clunk gets every last drop of fuel just like the fuel magnet.What does the fuel magnet do that the OS klunk doesnt......i would like to know.The OS klunk doesnt come apart so it seems to me the OS klunk is actualy better than the fuel magnet,it also cheaper in the long run also.
As Dr Ben has indicated the foam retains roughly ~30 seconds of fuel which would be beneficial in a nose down situation in which the clunk line doesn't bend enough to reach the fuel. I don't think the OS clunk retains any fuel.

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05-05-2010 04:34 PM  8 years agoPost 16
DS 8717

rrProfessor

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Mine never runs lean with the OS clunk,no matter what your doing.I could tell no difference what so ever in the way the motor runs with OS or Fuel magnet.The OS clunk is better overall,the only problem i see with OS clunk is its a little big and wont fit some tanks with smaller fuel tank openings.I have used both and prefer the OS clunk more than the magnet.The OS clunk retains fuel just like the magnet,maby not quite as much as the magnet but it holds enought to get the job done and thats all that matters...

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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05-05-2010 10:53 PM  8 years agoPost 17
Kevin Dalrymple

rrKey Veteran

Indianapolis

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Mine never runs lean with the OS clunk
Mine dose. Even with half a tank. It seems like mine can not get enough volume of fuel to the motor fast enough. I installed a fuel magnet with the same lines, and it is now golden. I have a freind with the OS clunk and it works great. Now my OS bubble less clunk picks up fuel in the bottom of my fuel jug or it was going in the trash.

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05-06-2010 02:25 AM  8 years agoPost 18
DS 8717

rrProfessor

Here wishing i was somewhere else

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Thats rediculus,the OS clunk will flow more fuel than the motor can use.....you had something else wrong.Most of the guys at our field have swithced to the OS clunk now,too much hassle dealing with the magnet when you dont have too...

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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05-06-2010 03:14 AM  8 years agoPost 19
Kevin Dalrymple

rrKey Veteran

Indianapolis

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I agree that the concept is better than the OS clunk, but when a motor keeps going lean you need to take a look. I ran this on my 600N worked fine, moved it to my N9, not fine, moved it to my 700, not fine and two different 91HX motors and fuel systems.

Like i said, one guy in my club, his is working great. Maybe i got a defective one. But there must be some reason that some of the pros dont like them and they prefer the stock clunk over the OS clunk? There was a thread here on RR about this. I will see if i can find it.

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05-06-2010 03:54 AM  8 years agoPost 20
Gernejr

rrKey Veteran

Miami, Fl

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WOW and all this because i ask about floating Magnet.. I run both and prefer the Magnet.. To each there only.. I switch over to Magnet when i no longer want to use a header tank........ No i don't think the magnet holds enough fuel to run my YS91sr for 30 seconds.. maybe at idle.

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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › OMI Fuel Magnet Floating
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