Petrol tank sender unit float...

[Ruairidh Dunford]

Does a modern replacement exist for the sender unit please? I have seen similar rubber floats for SU carbs but wonder if a modern replacement exists, other than a big cork?

["Slack Alice" Simon]

Float from an A7 carb, soldered on?

[Mike Costigan]

Apart from being 12 volt, I believe the Sprite/Midget sender unit is identical ... probably Morris Minor, too. Presumably some modern electronic trickery can deal with the voltage difference.

[Ruairidh Dunford]

My question was not clear - I am looking for a modern replacement float for the sender unit please.

[Pearls not a Singer]

Available at https://www.holden.co.uk/c/hardware/gaug...nk_senders
[url=https://www.holden.co.uk/c/hardware/gauges/fuel_tank_senders][/url]
I'm not sure when they started to use nylon floats but when I resurrected my gauge in 1985 I used one from a scrap maxi

[Nick Turley]

I think this should do the trick :-
https://www.amazon.com/Omix-Ada-17729-01...B003AOM17I

[Ruairidh Dunford]

Thank you both - perfect!

[Nick Salmon]

Ruaridh - the plastic float should do the trick. I recently butchered an MGB sender, which has a similar float 

I removed the porous metal float from the A7 unit, and with a bit of heating bent the arm into a circle - into which I pressed the plastic float.

It works a treat but I do know that because the arm is foreshortened an empty reading on the gauge actually means there is a fair bit of fuel in the tank.

[Ruairidh Dunford]

Good to know - thank you.

I have a plan with regards to the short arm, will let you know if it works.

[David Stepney]

When I had my tank sender unit out, I found that someone previously had shoved a cork into the skeletal remains of the float. The float finally collapsed into dust as I tried to get the cork out, so I just pushed the cork onto the angled wire where the float had been. Crude but effective. The gauge now works, but does not sink below the 1/4 mark, so when it gets anywhere near there, I add fuel.

But Ruairidh, you will probably want to do the job properly.