Fast Road


J

johnny_9

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Joined
Jan 11, 2009
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What your favourite suspension for a "fast road set-up" Touge handling and compliant ride?

Assuming you have a "matched damper" set-up, would you go for a relatively softer spring rate and firmer damper or a harder spring and softer damper.

BTW, any of you dudes heard what "seal drag" is?
 
Seal drag on a damper is the friction caused by the rubber oil seals on the damper. Good ones will have little seal drag, cheap ones will have lots.
 
johnny_9 said:
What your favourite suspension for a "fast road set-up" Touge handling and compliant ride?

Assuming you have a "matched damper" set-up, would you go for a relatively softer spring rate and firmer damper or a harder spring and softer damper.

BTW, any of you dudes heard what "seal drag" is?
Click to expand...

oem
 
Kozy said:
Seal drag on a damper is the friction caused by the rubber oil seals on the damper. Good ones will have little seal drag, cheap ones will have lots.
Click to expand...

what does seal drag feel like on the road and what does it look like on the shock dyno?
 
johnny_9 said:
what does seal drag feel like on the road and what does it look like on the shock dyno?
Click to expand...

In all honesty I have absolutely no idea. At a guess it's going to increase friction in proportion to shaft speed, so I would expect to see an increase in damper force in the high velocities in proportion to the lower velocities as seen on many cheap dampers with a progressive curve.

If we assume increased seal drag will make any damper force/velocity curve go more progressive, and that a progressive curve is bad for ride comfort, then it could be equated to it riding like crap and being rather skittish on bumpy roads. How much it affects it is anyones guess though.

I am just making this stuff up as I go along, it's only an educated guess so don't take it as gospel. :naughty:
 
OEM for fast road and track action, predictable and "Just how HONDA intended"
 
Kozy said:
In all honesty I have absolutely no idea. At a guess it's going to increase friction in proportion to shaft speed, so I would expect to see an increase in damper force in the high velocities in proportion to the lower velocities as seen on many cheap dampers with a progressive curve.

If we assume increased seal drag will make any damper force/velocity curve go more progressive, and that a progressive curve is bad for ride comfort, then it could be equated to it riding like crap and being rather skittish on bumpy roads. How much it affects it is anyones guess though.

I am just making this stuff up as I go along, it's only an educated guess so don't take it as gospel. :naughty:
Click to expand...

just read this - seal drag or "stiction" happens at low-speed. gives uneven damping curve in the low speed (driver inputs zone) see page 281/282

Suspension systems are designed to minimize stiction (which competes with damping effects)

The shock absorber handbook - Google Books

[URL=http://img685.imageshack.us/i/damperstiction.jpg/][/URL]
 
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Some more info: Highly Pressurized shocks may lead to stiction...

But the more pressure used, the harder the damper rod's seals are forced against it, creating dreaded "stiction" a momentary resistance to motion.
 
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