Front Fork Advice Needed

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thunderbolt
Posts: 302
Joined: Wed Apr 02, 2014 9:12 am
Location: Sydney, Australia

Re: Front Fork Advice Needed

Post by thunderbolt »

NZSpokes wrote:Im on .95 and im 102kg. Stock is .56 from memory. Way to soft.
The stock spring rate is .585 kg/mm and as you say way too soft and not linear.
Cheers
Don
____________________________________________

Bikes:
1977 Suzuki GS550/700 - modified significantly
1981 Moto Guzzi 850 T4
1990 Suzuki VX800
2003 Honda Firestorm VTR1000
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thunderbolt
Posts: 302
Joined: Wed Apr 02, 2014 9:12 am
Location: Sydney, Australia

Re: Front Fork Advice Needed

Post by thunderbolt »

sirch345 wrote:
thunderbolt wrote:
NZSpokes wrote:Thats a .85 spring.
PLEASE EXPLAIN !!! (to quote one of our politicians).

.85 kg, .85$, .85?

Thanks NZ
I'm using 0.85 fork springs, I weigh just over 13st (80.5kgs) kitted up and that suits me fine.

Chris.
I am 12.5st and when kitted up am probably a bit over the 13st mark but these springs seemed to work ok with me on board, but maybe the preload was wound in a bit to compensate.
Cheers
Don
____________________________________________

Bikes:
1977 Suzuki GS550/700 - modified significantly
1981 Moto Guzzi 850 T4
1990 Suzuki VX800
2003 Honda Firestorm VTR1000
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VTRDark
Posts: 20010
Joined: Sun Mar 18, 2012 9:24 pm

Re: Front Fork Advice Needed

Post by VTRDark »

I weight roughly 72-80 kg (11.5 st) and was recommended 0.85kg/mm linear springs measuring in total including spacer 410mm. If a spring is longer or shorter than this then adjust the spacer accordingly. This is which is what I used in the Fork Service Guide along with 7.5w oil and an air gap of 140mm.
I am 12.5st and when kitted up am probably a bit over the 13st mark but these springs seemed to work ok with me on board, but maybe the preload was wound in a bit to compensate.
I would say that .95 is about perfect for your weight. Don't forget to include full riding gear in with that weight.

(:-})
Last edited by VTRDark on Mon Sep 29, 2014 3:20 pm, edited 1 time in total.
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thunderbolt
Posts: 302
Joined: Wed Apr 02, 2014 9:12 am
Location: Sydney, Australia

Re: Front Fork Advice Needed

Post by thunderbolt »

ok thanks
Cheers
Don
____________________________________________

Bikes:
1977 Suzuki GS550/700 - modified significantly
1981 Moto Guzzi 850 T4
1990 Suzuki VX800
2003 Honda Firestorm VTR1000
User avatar
thunderbolt
Posts: 302
Joined: Wed Apr 02, 2014 9:12 am
Location: Sydney, Australia

Re: Front Fork Advice Needed

Post by thunderbolt »

Carl,

Thanks for those suspension articles you sent me. I found them very informative and interesting to read.

They were very much appreciated.
Cheers
Don
____________________________________________

Bikes:
1977 Suzuki GS550/700 - modified significantly
1981 Moto Guzzi 850 T4
1990 Suzuki VX800
2003 Honda Firestorm VTR1000
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