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Sunday spring rates

Daver

Daver

Monkey
Jun 1, 2005
390
0
Shiddeny
Just curious as to what exactly the spring rates should be. Using this spring rate calculator you should be using the same spring rate as per a single pivot, despite the DW link having multple pivots. I sent IH an email asking for spring rates but i am yet to receive an answer...

So... what would the spring rate be for a 90kg rider is 325 right? Or a 120kg rider- is 425 right?
 
heikkihall

heikkihall

Monkey
Dec 14, 2001
882
0
Durango, CO
I actually run quite a bit softer spring than that calculator reccomends. I weigh about 180 lbs and run a 325 spring on a Progressive 5th Element Coil. I started out the season on a 300. According to that calculator I should run a about 375 which seems like it would be too stiff when the shock is tuned to IronHorses specs.
Even though the DW- link bikes have "multiple pivots" they are designed to have very low leverage ratios. This allows you to get away with running verly light spring rates.
 
Acadian

Acadian

Born Again Newbie
Sep 5, 2001
714
2
Blah Blah and Blah
what Heikki said...

My weight varies between 145 / 155 (66kg to 70kg) and I ran a 275 all year on my progressive.

With a DHX I will probably need 300 (or maybe 325/350)
 
konabiker

konabiker

Monkey
Jun 30, 2004
669
0
Santa Barbara
Acadian said:
what Heikki said...

My weight varies between 145 / 155 (66kg to 70kg) and I ran a 275 all year on my progressive.

With a DHX I will probably need 300 (or maybe 325/350)
Click to expand...
I'm 25/20lbs heavier than you and run the same spring. Anyone want to trade for a 300 or a 325? I have a 400lb aswell;)
 
ska todd

ska todd

Turbo Monkey
Oct 10, 2001
1,776
0
A 275# Progressive spring should work best for the average rider weight of approx 180lbs. w/ a Fox DHX we recommend a 300# spring for the same rider weight.

I am approx 195-200lb and ride a 300# on the Progressive and 350# on the Fox.

-ska todd
 
D

dhrace

Chimp
Mar 17, 2005
37
0
what size spring if you run a swinger . I weigh 160 lbs. and have 350 spring on there is it to heavy?
 
ska todd

ska todd

Turbo Monkey
Oct 10, 2001
1,776
0
dhrace said:
what size spring if you run a swinger . I weigh 160 lbs. and have 350 spring on there is it to heavy?
Click to expand...
The Swinger sets up similar to the Progressive. I would recommend no more than a 300# spring for your weight.

-ska todd
 
Biscuit

Biscuit

Turbo Monkey
Feb 12, 2003
1,768
1
Pleasant Hill, CA
I'm 180 lbs and run a 275# on a progressive. About 75psi in the chamber, one full turn on the air volume adjuster.

I've been wanting to try a 300, but the it feels so perfect now, my sag is right with only a few turns on the spring. Why mess with perfection?
 
S

sbabuser

Turbo Monkey
Dec 22, 2004
1,114
55
Golden, CO
ska todd said:
A 275# Progressive spring should work best for the average rider weight of approx 180lbs. w/ a Fox DHX we recommend a 300# spring for the same rider weight.

I am approx 195-200lb and ride a 300# on the Progressive and 350# on the Fox.

-ska todd
Click to expand...
If so, what weight you running on that? Just outta curiousity...
 
Daver

Daver

Monkey
Jun 1, 2005
390
0
Shiddeny
So for a 90kg rider (~200pounds) a 300 is the go. Then, for a 120 kg (~260pound) rider, something around ~400 looks right.
 
P

Prechrysler

Chimp
Aug 6, 2004
73
0
How 'bout for a 230 (about 240 with gear) pound rider, 350 spring? Curious as I just ordered my Sunday, and I know the stock spring is going to be too weak for my large self.
 
S

SpasticJack

Monkey
Feb 25, 2002
344
0
I weigh in at ~225-235 and run a 400# Ti spring. the sag is just right with just enough turns to keep the spring from rattling. I don't know if it being Ti has anything to do with it but it still feels very plush for that high a spring weight.
 
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