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#21 Re: Fibre glass leaf springs for 1200 coupe
SpatialStage Posted on: 2017/2/3 0:33
Thanks guys for the info!
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#22 Re: Fibre glass leaf springs for 1200 coupe
D Posted on: 2017/2/3 0:55
the quality looks amazing but the only thing I would change would be the alloy edges making contact on the CH should be tapered smooth with not sharp edges or corners anywhere. If you were to look at any fibre you dont want to clamp anything sharp along its length or anything that could cause a hard spot while its flexing along its length
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#23 Re: Fibre glass leaf springs for 1200 coupe
Rallytwit Posted on: 2017/2/3 4:43
Dave a note on the spring rate; the I the suspension guide but the comp springs were actually stiffer than quoted. The suspension manual has a note about removing one spring from the pack. I have notes on what the actual. Spring rates are, I'll have to look them up.

Tom
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#24 Re: Fibre glass leaf springs for 1200 coupe
ddgonzal Posted on: 2017/2/3 6:52
Thanks for the correction

Nissan Competition
* 55020-H1023 SPRING/REAR (140 LBS/IN)
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Datsun Competition Suspension Manual
Quote:
The original rear springs are replaced with modified Datsun 1200 Competition units, Part Number 55020-H1024. The competition spring assembly contains three leaves held together by a single bolt.

Before installation, both of the competition springs are modified by removing the bolt and discarding the bottom (short) leaf. Then simply bolt thetwo remaining spring leaves back together. This modification will result in a spring rate reduction of approximately 25% from the unaltered competition spring assembly, but an increas of approximately 10% over the stock 1200 assembly.
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Stock rate is 109 lbs/in. Add 10% = 120 lbs/in

Many smooth tarmac racers on this site recommend much stiffer springs, to match upgraded stiffer front springs
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#25 Re: Fibre glass leaf springs for 1200 coupe
Rallytwit Posted on: 2017/2/4 4:24
Yeah that's the blurb. The unmodified competition spring set would be 160lb range.

Tom
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