Progressive Fork Springs

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maxhemacrit
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Progressive Fork Springs

Post by maxhemacrit » Tue Jul 23, 2019 8:00 pm

Has anybody installed progressive fork springs in an NC24?
And if so did it make any difference.
Thanks,
Keith

magg
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Bike owned: VFR400
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Re: Progressive Fork Springs

Post by magg » Wed Jul 24, 2019 9:04 am

Why progressive, are you trying to reduce the impact harshness of the front suspension?

maxhemacrit
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Re: Progressive Fork Springs

Post by maxhemacrit » Wed Jul 24, 2019 5:52 pm

No the opposite. The springs are very soft in the first part of travel.
I also think i'm getting some chatter in faster bumpier corners but I think that's a lack of 'real' rebound control.
Thanks
Keith

maxhemacrit
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Re: Progressive Fork Springs

Post by maxhemacrit » Wed Jul 24, 2019 9:02 pm

The only aftermarket springs I could find are Progressive.
I was hoping they would be a better spring all round compare to the 30+ year old OEM items.

magg
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Re: Progressive Fork Springs

Post by magg » Thu Jul 25, 2019 1:56 am

Have you measured the unloaded and loaded sag? Where are you located? Rick Oliver on this site supplies aftermarket springs. NC24 has damper rod forks?

radarro
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Re: Progressive Fork Springs

Post by radarro » Mon Sep 16, 2019 2:52 pm

Hi, late but still worth replying:
I've made general front forks rebuild early 2019. Fitted German Wirth Federn - model 5010 from link below:
https://www.wirth-federn.de/produkt/wir ... 500-s-ex5/

Reason was simple: to replace 30+ years old OEM ones and make front more stable for ~100kg rider.
I've put new fork tubes, springs, sealings and springs, and still plan to make DYI with gear list and pics to the forum...

Faxe400
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Re: Progressive Fork Springs

Post by Faxe400 » Thu Sep 19, 2019 8:04 am

It's like Religion, you just have to believe ….

Original springs are progressive too.

I wanted to have longer springs, but due to unequal length of dampers and the upper metal cartridges it is very difficult. I asked at Wilbers and they sent me a sheet to measure all stuff they need (Diameter of wire, turns of spring, free length. hight of fork: unloaded, only bike itself and with me, …). Outcome for me (100kg+) was they suggested to cut 10mm off from the cartridge to make it softer.


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