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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › Fuel Magnets, Life expectancy + fuel magnet general discussion
07-30-2007 09:04 PM  13 years ago
DOKEY

rrProfessor

Northamptonshire UK

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i've been flying 10yrs with no more than a header tank and have never had a engine problem that the fuel magnet would have prevented.
The KISS method has a lot going for it.
LOL, kiss method.

1, main tank plus header tank = cost in a header tank! more fuel line! and now two clunk lines to have the possabilty to deteorate or give hassle!

2, one main tank, one fuel magnet, no extra fuel line, no extra tank or weight! very little to maintain aswell.

Fuel magnet must be the KISS method then ??

just my two cents of course.
Ryan.
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07-31-2007 03:17 AM  13 years ago
Costas

rrApprentice

Adelaide - AUSTRALIA

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Obviously you may not be familiar with the functioning of a header tank.

1: It does not matter if the clunk or fuel lines give up the ghost in a header tank, as it should always be full of fuel and therefore will always supply fuel whether there is fuel line in there or not...!!(unless you run the header tank dry) - The fuel line and clunk in a header tank are really only there to facilitate emptying of the tank if required.

2: Extra weight? I don't think that many header tanks pose too much of an additional weight penalty. Biggest advantage is that I can carry extra fuel without worrying about the main tank running dry - To me this is an extra safety measure during my flights.
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07-31-2007 11:21 AM  13 years ago
DS 8717

rrProfessor

Here wishing i was somewhere else

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When you consider the header tank is allways full of fuel you are eliminating 3 to 4 oz of weight when you remove it,that is unless you always fly with an empty header tank.These dont deteorate,and sucks ELD.

http://www2.towerhobbies.com/cgi-bi...clunk&search=Go
YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED
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08-01-2007 02:48 AM  13 years ago
cyclic fever

rrApprentice

Seymour Indiana

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now theres abetter idea mr10x
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08-01-2007 09:44 AM  13 years ago
Barney

rrKey Veteran

Inverness Scotland

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Hey Cyclic Fever...I see another 'bargain' in your gallery! I bet that MDS motor was a real smart buy..

Not even a fuel Magnet will help you with that
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08-01-2007 11:28 AM  13 years ago
cyclic fever

rrApprentice

Seymour Indiana

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darn! I has just about forgoten all about that POS MDS motor It was a .38 that I tried to get to run. I bought it for very little but it was still too much! Thanks for bringing it to mind again
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08-01-2007 01:12 PM  13 years ago
Barney

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Inverness Scotland

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Yeh..wev'e had our fair share of them over here too..same conclusion
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08-01-2007 06:22 PM  13 years ago
raptorheli2

rrElite Veteran

rip off britain and no changing it

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barney, please stop posting on here and get back to posting mail as i'm waiting for a new gyro coming.

MDS...must die soon, many dead sticks, may destruct soon.

brilliant engines

cheers

www.waterfoothelis.com
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08-01-2007 10:44 PM  13 years ago
Barney

rrKey Veteran

Inverness Scotland

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I MAY have to go back soon..

My stock pile of fuel is fast running out with all the extra spare time
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08-01-2007 10:50 PM  13 years ago
raptorheli2

rrElite Veteran

rip off britain and no changing it

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GOOD....spartan gyro shipped friday special del next day before 1pm and it still aint here.....have a word will ye

cheers

www.waterfoothelis.com
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09-09-2007 03:58 AM  13 years ago
tjrhodes01

rrApprentice

walkerton IN. US

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not to but in but anyway the cost factor would not be the same how often does a header tank go bad and some one must explain to me how the fuel magnet can reg fuel as well as header tank your mixture will vary more through the tank reletively through its size the header tank is designed to stay completely full eliminating fuel starve and mixture and if you are run a gov you may not even see the fluxuation but your engine will but dont get me wrong i dont disagree with the magnet it just a little backup and i am running both header and magnet in my trex header was as easy to install as on rappy as long as they last atleast a season i my continue with that setup although dont forget how much of a pain it is to get the nipple off the main tank to change filter
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09-09-2007 10:11 AM  13 years ago
raptorheli2

rrElite Veteran

rip off britain and no changing it

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absolutely zero need for a fuel magnet and a header tank and you maybe doing more damage with it this way as i assume if people use a header tank then sometimes you run the fuel mag dry while flying. if you don't do this then you really have just added more weight to the heli.

both methods do work well it's just a case of picking the one that suits you and your application best.

cheers

www.waterfoothelis.com
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09-10-2007 03:53 AM  13 years ago
tjrhodes01

rrApprentice

walkerton IN. US

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i never run main dry no need to 1 minute flight wont make me better if extending my flight time wasan issue i would fly the bergan gasser and if you think 1/4 ounce of fuel to a 7 pound machine is that important i hope your flying logitec and not 611 compare that weight i still like to know how the magnet can reg fuel pressure like header
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09-10-2007 06:25 AM  13 years ago
Paul Woodcock

rrElite Veteran

Dubai - United Arab Emirates

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Hi guys

I flew a friends Synergy today, which had a fuel magnet. It sucked up every last drop.....just like it is suposed to.....On one of the flights, i hovered in front of myself and ran the tank dry. The motor was perfect right till the end. The rpm increased just slightly and i landed. Almost nothing left in the tank. Great hey...

My question. At the end of the flying, i filled and then drained the tank, just to see it working. As soon as the fuel level got to the top of the mag, it started sucking air. As the fuel level reduced the air bubbles, well actually more like foam in the line, got worse and worse. I realise my fuel pump sucks the tank out much faster than the motor and there was no tank preasure to 'push' it out.

Is this normal ?

Regards

Paul

PS: The synergy was fantastic. Will probably go buy one today.....
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01-26-2008 07:31 PM  12 years ago
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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Fill the tank after EVERY flight. When draining the tank at the end of the day, pull the pressure line off the muffler so you dont draw smoke back into the tank. And leave just enough fuel in the tank to keep the magnet good and wet until your next flying session.

It should last a good season doing this
They will last about 3 months with muffler pressure if you purge the tank by refilling it after the flight AND keeping it soaking in a 1/2" of fuel during storage.
after all that, people say its less trouble then a header? i dont get it!

unplug the vent line? refill the tank with good fuel so it can go bad? ALL just to get the last couple drops of fuel? WHO CARES about getting every last drop? that will be the equivelant to about 1-2 seconds of full power.
and it seems a lot of people dont get these things to last longer then a year....so how do you know its going bad? when your engine dies? do you guys really like removing your tanks and fittings that often?

sorry, but i just cant see any advantages to make me switch from a header. the header works perfect. fuel up the heli, and fly the damn thing. then when im done, i take out what ever fuel is left, pack it up, and go home. i have never had an engine quit on me do to running the header. if anything, it has saved me more often then i care to count.

when an engine goes from running the main tank to a header only, it will all of a sudden run rich. a good sign you dont have fuel in the main.

extra costs to fuel line? your going to have to replace it each year anyways. how much does an extra few inches of line cost? 10 cents? how mcuh did that new fancy metal "upgrade" that adds weight and no performance cost you?

and then the issue about reduced weight...how many of you would actually notice it? how many of you fly over powered machines, and actually practice collective management? or do you just bang the sticks around, and say "well, that thar engine is bogging, it must be the weight of that header tank"

then the issue about appearance...who cares? most pilots fly raptors. in my opinion, it would take a lot more then the removal of a header tank to make a raptor look good!

last summer i pumped 12 gallons of fuel through my 90 with a header. not a single issue.
Shawn
Team Leisure-Tech
Team HelixRC
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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › Fuel Magnets, Life expectancy + fuel magnet general discussion
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