Reference: CMP seat back coil spring dimensions

[Phil Waterman]

Hi Grant

Add enough for (two seat) sets for me if you can get reasonable price. Will check the other two trucks to see if either of those needs a set.

Cheers Phi

[Bob Carriere]

Standard heavy duty key FOB rings work perfectly.

Or make your own........ we have seen on a few trucks that the rings were actually washers of approx. 1/2 inch that had been drilled at four location 90 degrees apart......noon..3..6..9 on the clock.

Spring stock is available from US distributor in 3 or 4 foot length...... the user needs to cut them to size and open up one ring/turn to create the hook.

We also luck out at a flea market and got a lot of springs, supposedly used for furnace dampers, and they are the right size and stiffness and using key FOB rings made a few of our own seats. Key FOB rings were available by the bags on EBay........ cheaper than buying by the item at a leather shop.

Cheers

[Grant Bowker]

Originally Posted by Bob Carriere

Standard heavy duty key FOB rings work perfectly.

Or make your own........ we have seen on a few trucks that the rings were actually washers of approx. 1/2 inch that had been drilled at four location 90 degrees apart......noon..3..6..9 on the clock.

In the perfect world, we need to be looking at one piece, closed rings (originals look like they were welded) so that they can't open up under load.
Drilling washers is a bit fiddly, but easy. Done it.

[Hanno Spoelstra]

Hello Jordan,

I have not been able to find these as a catalog item. So I would be interested in two sets if you have them made to order. It of course does depend on the price, so a ball-park figure would be good to know first.

Thanks,
Hanno

[Jordan Baker]

I realize it's hard to gauge interest without a price. I plan on stopping by the place tomorrow during my travels. I will let everyone know. I need 5 sets for the Wire3 truck alone.

[Jordan Baker]

I stopped by with my samples today. After careful measuring of both springs the shops computer spotted out a price of $3.25 Cnd per spring. This price was also based on an order qty of 10-15 sets. Each set would therefore be $78 plus tax plus a little extra for the rings.

I feel that it is rather expensive. Maybe I'm out of touch with what it costs for springs to be made.

[Lang]

The key ring sounds like a sensible idea. Why bother drilling holes in the washers, the original did not have 90deg positioning. Just get a suitable size washer and hook through the centre hole like the original rings.

Lang

[Hanno Spoelstra]

Originally Posted by Jordan Baker

I stopped by with my samples today. After careful measuring of both springs the shops computer spotted out a price of $3.25 Cnd per spring. This price was also based on an order qty of 10-15 sets. Each set would therefore be $78 plus tax plus a little extra for the rings.

I feel that it is rather expensive. Maybe I'm out of touch with what it costs for springs to be made.

Jordan,

Thanks for checking the prices. I found an off-the-shelf spring with comparable dimensions (but a little too long which would mean the back would sag), and the price for it was in the same ball park. It all adds up a little too fast...

Maybe the only cheaper option is to make them oneself from spring stock as Bob did?

Hanno