Reference: CMP seat back coil spring dimensions

[Jordan Baker]

There is chance that one of the guys near me is buying some spring making machines. There used to be a local guy here who made springs. His prices were a lot cheaper but his health declined badly and he is no longer in business. If the purchase of the machines can be done I'll be a to get the springs done for very very cheap. So as it stands now I'm holdoff in the hope that the machines will be sold.

[Hanno Spoelstra]

Here's another option I found.

The owner of a Ford FGT opted to restore the six seats in his FAT as per the pictures:

IMG-0874.jpg IMG-0873_resized.jpg

[Hanno Spoelstra]

Meanwhile, a Dutch guy restoring a Morris-Commercial C8 Quad sourced an off-the-shelf spring with almost identical dimensions as the original.

Here they can be seen fitted to a Chevrolet seat by Pieter Bergman.

Alex van de Wetering has sourced a rings as well, so his truck will be fitted with new seat backs shortly.

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[Jordan Baker]

I’ve still got some ring sets available. Can see my post in the for sale section.

[Phil Waterman]

Hi

But the big question is how do they work, are they comfortable? I've been lucky that two of my trucks came with good seats. But the third the cushions and the back springs were gone. I've tried various readily available springs and have not found any that are comfortable to sit against for any length of time. Generally there is not enough give across the top.

Now how to measure the give of the springs to try and find good

Cheers Phil

[David Dunlop]

Phil. Would a Fish Scale help?

Take a good spring, fasten one end to a fixed point and the other to the scale. Extend the spring a given distance and measure the pounds required to do so.

Then compare the other springs, extending them the same distance. You should get different readings if those springs are harder or softer than the one that is your bench mark.

David