Suspension setup and spring rate survey

[nic1894]

The difference in vertical components of bump force between 65 degrees and 63.5 degrees is about 1.2% (ie fuck all), and in addition to that, you have even MORE pro-dive from your forks under braking with the slacker head angle, as well as having a fork that actually absorbs bigger bumps MORE easily than with the steeper head angle (more rearwards axle path). However 1.5* change in head angle is IMO just not worth changing springs for, especially since an x-soft Boxxer spring is roughly 15% softer than the soft!


Also not sure why people are still bothering to reply with air-sprung stuff... mentioned more than once that it's not any use.

mate maybe just be thankful that people are bothering to post at all and just trying to help

 

[Welshy]

mate maybe just be thankful that people are bothering to post at all and just trying to help

God you are a tard. S. Is one of the VERY few people on this site that know anything about anything. You, along with many others are the ones spouting on about shit you know nothing about.

FYI Joey and his dad are pretty good with suspension tuning (mainly his dad, Joey is a moron!) and upon speaking with him you'll realize that. Also, anything Steve happens to say in regards to suspension is gospel. Shut up, sit down and be damn happy for the opporunity.

 

[nic1894]

God you are a tard. S. Is one of the VERY few people on this site that know anything about anything. You, along with many others are the ones spouting on about shit you know nothing about.

FYI Joey and his dad are pretty good with suspension tuning (mainly his dad, Joey is a moron!) and upon speaking with him you'll realize that. Also, anything Steve happens to say in regards to suspension is gospel. Shut up, sit down and be damn happy for the opporunity.

haha ok paul did my forks the other day so maybe just calm down abit especially if you dont know me

 

[littleredridinghood]

Rider weight (lbs or kg): 85kg.
Rider height (ft/in or m): 182cm (6ft).
Bike (brand/model/year): Specialized Demo 7 08 Medium.
Rear travel (in): 7.75"
Shock stroke (in): 8.75x2.75
Shock model: 08 Fox DHX 4.0
Shock spring rate (lbs/in): 500x2.8, with about 95 psi.
Fork model: Marzocchi 66 rc2x.
Fork spring: Medium, with about 60 psi.
Class you race, if you race: U 17's.

 

[Viv92]

haha ok paul did my forks the other day so maybe just calm down abit especially if you dont know me

What did he do to your forks?

 

[hucker_boy]

God you are a tard. S. Is one of the VERY few people on this site that know anything about anything. You, along with many others are the ones spouting on about shit you know nothing about.

FYI Joey and his dad are pretty good with suspension tuning (mainly his dad, Joey is a moron!) and upon speaking with him you'll realize that. Also, anything Steve happens to say in regards to suspension is gospel. Shut up, sit down and be damn happy for the opporunity.

seriously why would u even bother argue with someone hahaha

Rider weight (lbs or kg): 67kg.
Rider height (ft/in or m): 174cm
Bike (brand/model/year): Specialized Demo 8 06 Medium.
Rear travel (in): 8.2"
Shock stroke (in): 8.75x2.75
Shock model: 07 Fox DHX 5
Shock spring rate (lbs/in): 350x2.8, with about 110 psi.
Fork model: Marzocchi 888
Fork spring: Medium
Class you race, if you race: U 19's

 

[nskz]

Also not sure why people are still bothering to reply with air-sprung stuff... mentioned more than once that it's not any use.

I don't exactly know what you're doing with the data so it might be totally pointless but you could get an approximate 'spring rate' for an air spring. All you need is the diameter of the air piston. F=PA and ideal gas laws, make a few assumptions for simplicity, fit a few trend lines and bam Bob's your uncle. No?

 

[patto_15]

Rider weight (lbs or kg): 70kg
Rider height (ft/in or cm): 5'10"
Bike (brand/model/year): IH Sunday, WC 2006
Rear travel (in): 8.0
Shock stroke (in): 3
Shock model: Fox DHX5
Shock spring rate (lbs/in): 300lbs
Fork model and year: 2005 RS Boxxer WC
Fork spring: Ti Soft
Class you race: Elite

 

[S.]

I don't exactly know what you're doing with the data so it might be totally pointless but you could get an approximate 'spring rate' for an air spring. All you need is the diameter of the air piston. F=PA and ideal gas laws, make a few assumptions for simplicity, fit a few trend lines and bam Bob's your uncle. No?

If you know the volumes of the air chambers and the piston and shaft diameters it's very easy to calculate, however I don't happen to have that data unfortunately. I do appreciate people's replies but as I said, info on air-sprung forks or shocks isn't any use to me at the moment.

 

[nic1894]

What did he do to your forks?

haha he said they felt like shit so after going to clear with joey he like put more oil in them and lubed the seals i think

 

[sockman]

Rider weight (lbs or kg): 73
Rider height (ft/in or m): 5'11"
Bike (brand/model/year): Ironhorse yakuzaaa 06?
Rear travel (in): 7
Shock stroke (in): 2.75
Shock model: Swinger 3 way
Shock spring rate (lbs/in): 300lb/in 95psi SPV
Fork model: 06 Boxxer race
Fork spring: medium
Class you race, if you race: Sport when and if...

 

[Sean]

Rider weight (lbs or kg): 78kg
Rider height (ft/in or m): 6'1"
Bike (brand/model/year): 09 Norco Atomik
Rear travel (in): 9"
Shock stroke (in): 3.25
Shock model: DHX3.0
Shock spring rate (lbs/in): 350lb
Fork model: 09 Boxxer Race
Fork spring: Yellow (if that's the standard spring..?)
Class you race, if you race: Sport

 

[Dymalla]

FYI Joey and his dad are pretty good with suspension tuning (mainly his dad, Joey is a moron!).

I am no moron!

I taught dad everything he knows...

 

[powley]

Rider weight (lbs or kg): 64kg
Rider height (ft/in or m): 174cm / 5'8"
Bike (brand/model/year): 09 giant Reign X1
Rear travel (in): 6.7"
Shock stroke (in): 2.25"
Shock model: DHX3.0
Shock spring rate (lbs/in): 450lb (too stiff) 125 psi (minimum)
Fork model: 09 Fox Van 36
Fork spring: umm... black or blue
Class you race, if you race: Under 19's

 

[mic9754]

Rider weight (lbs or kg):60kg
Rider height (ft/in or m):5'8"
Bike (brand/model/year):2010 mongoose boot'r team
Rear travel (in):8"
Shock stroke (in):3"
Shock model: vivid 5.1
Shock spring rate (lbs/in):250
Fork model:2010 boxxer team
Fork spring:soft
Class you race, if you race:u17's

 

[kaotickelly]

Rider weight (lbs or kg): 82 KG
Rider height (ft/in or m): 177cm
Bike (brand/model/year): Canfield Balance 08
Rear travel (in): 6.5
Shock stroke (in): 2.5
Shock model: DHX5
Shock spring rate (lbs/in): 550 / 500 depending on terrain. (125psi)
Fork model: Shox Pike U-Turn 06
Fork spring: Firm (one above factory standard)

 

[dj3]

Rider weight (lbs or kg):70kg
Rider height (ft/in or m):6'1"
Bike (brand/model/year):2005 Specialized demo 9
Rear travel (in): 9 inches i presume
Shock stroke (in): 3.0"
Shock model: Manitou swinger 6 way
Shock spring rate (lbs/in): 400lbs ( approx 100psi)
Fork model: 08 Marzocchi 888rc
Fork spring: medium
Class you race, if you race: u17/u19

 

[a.parker]

..

Rider weight (lbs or kg):64kg
Rider height (ft/in or m):175cm
Bike (brand/model/year): Mongoose Boot'R Team 2010
Rear travel (in): 8 inches
Shock stroke (in): 3 inches
Shock model: vivid 5.1
Shock spring rate (lbs/in): 300lbs
Fork model: 07/08 Manitou Travis intrinsic 203mm
Fork spring: medium (Red)
Class you race, if you race: U19's

 

[Barrington]

Rider weight (lbs or kg): 60-65kg
Rider height (ft/in or m):180cm
Bike (brand/model/year): 06 Mongoose Black Diamond Triple
Rear travel (in): 7.5
Shock stroke (in): 2.75
Shock model: vivid 4.1
Shock spring rate (lbs/in): 500
Fork model: 05 888vf
Fork spring: soft i think
Class you race, if you race: na

 

[Atomik09]

Rider weight (lbs or kg): 75kg
Rider height (ft/in or m): 5'6"
Bike (brand/model/year): Norco Atomik, 2009
Rear travel (in): 9"
Shock stroke (in): 3"
Shock model: Fox DHX 3.0 Tuned by Tekin
Shock spring rate (lbs/in): 350lb/in
Fork model: Fox 40
Fork spring: Medium spring
Class you race, if you race: Sport