Bilstein B14 damper rates?

[sam JFM]

Does anyone know the B14 damper rates?

???/??? Format?

Cheers

 

[NorthloopCup]

I'm pretty sure they've been posted on here before somewhere mate.

 

[sam JFM]

Any idea what to search for?

 

[NorthloopCup]

Any idea what to search for?

Unfortunately you may have to search for bilstein b14 and trawl through all the related threads mate.

 

[Paprika123]

This any use?

http://www.cliosport.net/threads/ag...-rate-debate-help.747358/page-2#post-10340413

 

[sam JFM]

Unfortunately that thread just contains spring rates

 

[NorthloopCup]

Unfortunately that thread just contains spring rates

Ah my bad mate, I misread your first post and read it as spring rates not damper rates! Give bilstein UK a call. They'll give you all the info your likely to need I imagine.

 

[p@blo]

In the thread linked above, how come post #43 suggests rate equivalence for a 1:1 MR versus the platform mount on the beam would mean using a spring that was double the rate?

 

[NorthloopCup]

In the thread linked above, how come post #43 suggests rate equivalence for a 1:1 MR versus the platform mount on the beam would mean using a spring that was double the rate?

If I'm understanding what your asking mate, it's because of the lever effect of the rear beam over the spring in the oe position. When I measured it ages ago it was something like 1.7:1, so for a 500lb rear spring the wheel would only 'see' 295lbs. Most use the 1.5:1 MR though.

 

[p@blo]

Yes mate, that's what seemed odd. Wouldn't the greater effort necessary to overcome a given resistance further out from the pivot require a spring of lesser rate to achieve equivalence? Post #43 suggests the inverse.

 

[NorthloopCup]

Yes mate, that's what seemed odd. Wouldn't the greater effort necessary to overcome a given resistance further out from the pivot require a spring of lesser rate to achieve equivalence? Post #43 suggests the inverse.

Basically mate, on Ast rear coilovers, or any rear coilovers, you don't need heavy springs, but it's an easy way to cheat the handling. It's all in a bid to control the roll. The rear controls the front on a fwd car, as I'm sure your aware, so it's done to reduce understeer. Otherwise your looking at bladed arb's, so fabrication, calculation and trial and error before you get it right. Even I've said b****cks to doing them! Too much grief!

 

[p@blo]

Wasn't disagreeing with you on that mate.

Was just puzzled by the claim in the other thread that the b14 rear rates equated to a 500+lb rate on a rear coilover setup. The mk2 cup cars were only 390lb.

Speaking of bladed ARBs, do you know if that guy that posted on here from Russia ever made any headway with the one he was developing a year or so back?

 

[Steven103]

Was just puzzled by the claim in the other thread

Completely right, I'd like to think I posted #43 at 3am or something xD Using Northloop's numbers:

MR = Spring / Wheel
1.7:1 = 1/1.7 = 0.6 ish giving you
wheel rate * 0.6 = spring rate

 

[NorthloopCup]

Wasn't disagreeing with you on that mate. :smile:

Was just puzzled by the claim in the other thread that the b14 rear rates equated to a 500+lb rate on a rear coilover setup. The mk2 cup cars were only 390lb. :smiley:

Speaking of bladed ARBs, do you know if that guy that posted on here from Russia ever made any headway with the one he was developing a year or so back?

No mate not heard of anything relating to a bladed arb. I looked at making one for mine and James's car but the interest level wained! Lol

 

[NorthloopCup]

Completely right, I'd like to think I posted #43 at 3am or something xD Using Northloop's numbers:

MR = Spring / Wheel
1.7:1 = 1/1.7 = 0.6 ish giving you
wheel rate * 0.6 = spring rate

It happens to the best of us mate! Lol!

 

[p@blo]

Completely right, I'd like to think I posted #43 at 3am or something xD Using Northloop's numbers:

MR = Spring / Wheel
1.7:1 = 1/1.7 = 0.6 ish giving you
wheel rate * 0.6 = spring rate

Had me questioning my sanity there Steven!

You're posts are usually very detailed - was wondering if i'd always had the wrong appreciation of the fundamentals.

Thanks both for clarifying & apologies to Sam for going OT.

 

[sam JFM]

All good stuff to have written down!