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MG Midget and Sprite Technical - Rear spring

Does anyone have the thicknesses of the leaves of the 6 leaf CHA493 rear spring for the 1500?
All the same or are there one or two different?
Paul Walbran

Paul, I’ve just measured mine and they’re all 4.4mm. At the centre all 6 together measure 26.5mm so dividing back gives 4.417mm. Bob
R.A Davis

Aren't they interleaved with thin nylon or similar blades? I know one set I had were, but perhaps they weren't OEM.
GuyW

Thanks for taking the trouble Bob, looks like as I suspected the one in our workshop at present has been fiddled with, much appreciated When I checked my memory against the workshop manual only the 5 leaf specs were listed.
Paul Walbran

Any help?

Malcolm

Can you read that?! Sorry.

It says:

1098 and 1275, 5 leaves @ 0.17"
1500, 6 leaves @ 0.167" - 0.177"

Does the fact that they state a range on the 1500 mean that they are not all uniform thickness?
Malcolm

ETA: Too late again, I was off checking my memory at 86lbs, sorry don't know about thickness.

"Type (1500)

Number of leaves - 6

Width of leaves - 1.5 in (38.1 mm)

Thickness of leaves - 0.167 - 0.177 in (4.24 - 4.5 mm)

Free Camber - 5.58 in (141.7 mm)"

(Spring was rated at 86lb/sq in.)


Nigel Atkins

This thread was discussed between 09/11/2020 and 10/11/2020

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