Sender for Smiths fuel gauge

strictlypersonl · #1 (**permalink**) 08-21-2018, 04:04 PM

See down the link I posted. You should check, but it's likely your gauge is 20/220 ohms.

xb-60 · #2 (**permalink**) 08-23-2018, 01:47 AM

Thanks Dan, Bob and Gary for advice. As it turned out, the fuel sender selection ended up being more straightforward than I initially thought.
Sourced the new sender from Gauge Works Gaugeworks - Specialist Gauge Supply, Advice & Calibration Services (Albert Park, Adelaide, SA) where I was told “just plug it in and go”
and that’s how it panned out.

Here’s the sender at quarter full and gauge at quarter full (note position of float):

Here’s the sender at full and gauge at full (float is at the top of its travel):

Can now continue with the tank installation.

I'll post this on the build thread as well.

Cheers,
Glen

rsk289 · #3 (**permalink**) 08-24-2018, 12:29 AM

Just a tip: hold the sender next to the tank with the mounting flange as close as you can to the installed angle, and check that the float arm can move through its full arc without hitting any obstacles. Check inside the tank for baffles, too. And be sure to mount it in the correct orientation so it doesn't hit the sides!

Sounds obvious, but we've all been there...

Roger

xb-60 · #4 (**permalink**) 08-24-2018, 08:52 PM

Roger, it's not a rotating arm and float. The float is donut shaped (ie hole in the middle) and it just slides up and down the shaft with the fuel level.
I thought I would have to setup the sender correctly and then adjust the gauge to suit at empty/quarter/half/full, but it really was just 'plug-and-play' with no adjustment required whatsoever on my MGB fuel gauge.

Most impressed

Cheers,
Glen

rsk289 · #5 (**permalink**) 08-25-2018, 01:42 AM

Ah, sorry, I assumed it was the original MGB type (and Cobra). So you don't get the authentic 'full on right hand bends, empty on left hand bends' effect?

xb-60 · #6 (**permalink**) 08-25-2018, 03:02 AM

Don't know....but hope not.
It seems that there are at least three compartments inside the tank, and the baffling looks that good that wild swings of the gauge needle would be abnormal.
The pickup is in a baffled cup as well so that should all but eliminate starvation.
Quite impressive design detail.

Cheers
Glen