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Fuel Sender
bassett - 28/9/08 at 07:07 PM

Hi ive got a random fuel sender supplied by the kit manufacturer but not supplied with a gauge probably because the owners always want something different but can any gauge be used with any sender?
Cheers
Adam


clairetoo - 28/9/08 at 07:17 PM

In my experience - no The gauge and sender should be a `matched` pair - for instance an Escort gauge wont read right with a siera sender .


blakep82 - 28/9/08 at 08:02 PM

^ unless either the gauge or sender can be calibrated in some way?

i actually haven't got a clue. i actually don't understand fuel senders at all. i don't get how you can have all that electricery in a fuel tank and its ok


bigpig - 28/9/08 at 09:29 PM

From the notes on my Acewell unit, fuel senders come in 100/ 250/ 500 Ohm ratings. IIRC VW campers come in 60 Ohm, but you can put a resistor in series to make them work.

I guess putting in on a multimeter and seeing what the range is will give you an idea of the appropriate gauge (if you can get a matched one).


Davey D - 28/9/08 at 10:31 PM

You could always make your own gauge like i have. i made the circuit from this website:

http://www.mez.co.uk/ms13.html

i have 8x led's above my R1 clocks that light up depending on the level of the fuel.. simple circuit, but it works really well


stuart_g - 29/9/08 at 08:23 AM

I'm sure the fuel level sender MNR supply is a racetech one, just buy one of their fuel gauges and it will work properly. I have this on mine and it works very well.


bassett - 29/9/08 at 04:38 PM

Cheers for the response and damn the answer i hoped for was yes

Davey D that looks really cool but i dont think my dad will go for it as he really fancies the VDO gauges and its a shared build.

Probaly best if i call MNR or just try the VDO gauge.


02GF74 - 30/9/08 at 08:40 AM

quote:
Originally posted by blakep82
^ unless either the gauge or sender can be calibrated in some way?

i actually haven't got a clue. i actually don't understand fuel senders at all. i don't get how you can have all that electricery in a fuel tank and its ok


The sender is a coiled wire wound onto a former over which a contact slides - i.e. a variable resistor but the resistance can vary hence incompatability issues.

Fitting a resistor may help it work better with a gauge but it will not be accurate.

The current passing though the wire is quite smal so unlikley to cause sparks; even so, air/fuel needs to be in a specific ratio for combustion - read explosion - to occur. The air will be forced out of the tank by petrol vapour.

Anyone who has ever had to call the AA out to start a car will realise how hard it is to ignite petrol.