Fork Seals

[mmattockx]

Progressive springs (talking fork springs) on the street aren't all that, you get the best benefit with progressives on the track.

That is backwards. Progressive springs allow a softer ride on the street while stiffening up to accommodate increased loads due to luggage, passenger, etc. No track bikes or race bikes use progressive springs or linkages if they can help it, the non-linear wheel rates complicate tuning significantly.


Mark

[mrbill5491]

That is backwards. Progressive springs allow a softer ride on the street while stiffening up to accommodate increased loads due to luggage, passenger, etc. No track bikes or race bikes use progressive springs or linkages if they can help it, the non-linear wheel rates complicate tuning significantly.


Mark

Uh, no it isn't. http://sonicsprings.com/catalog/stra...ch_article.php
Another article stated they are better for the tracks because the way progressive springs can react to track loading conditions.

[GSXR7ED]

I just sent request to Z1 for Sonic fork springs as well as cartridge emulator.


Ed

[Rijko]

Uh, no it isn't. http://sonicsprings.com/catalog/stra...ch_article.php
Another article stated they are better for the tracks because the way progressive springs can react to track loading conditions.

Sonic states : "I think it’s safe to say that there’s not a single reputable suspension tuner who advocates progressive springs."

i've found one in 10 seconds, Hyperpro is a reputable manufacturer.
Google is happy to provide an article for every point of view :-)

Every single suspension manufacturer makes progressive springs...
that must mean something.
Progressive springs have been hot for decades now.

We're talking road use, not track use or motorcross.
Ever try race tyres on the road ? They work like crap.

It is a known fact progressive springs are an improvement over 35+
year old straight springs for my GS.
But in combination with cartridge emulators and/or air preload, straight springs
may be better.

There are so many factors and different applications it think is not ok to try to apply
one remark from one manufacturer to all situations.

I happily accept this is complicated stuff and i am happy with an improvement
over stock suspension - and i believe the progressive springs are just that.

[mrbill5491]

Sonic states : "I think it’s safe to say that there’s not a single reputable suspension tuner who advocates progressive springs."

i've found one in 10 seconds, Hyperpro is a reputable manufacturer.
Google is happy to provide an article for every point of view :-)

Every single suspension manufacturer makes progressive springs...
that must mean something.
Progressive springs have been hot for decades now.

We're talking road use, not track use or motorcross.
Ever try race tyres on the road ? They work like crap.

It is a known fact progressive springs are an improvement over 35+
year old straight springs for my GS.
But in combination with cartridge emulators and/or air preload, straight springs
may be better.

There are so many factors and different applications it think is not ok to try to apply
one remark from one manufacturer to all situations.

I happily accept this is complicated stuff and i am happy with an improvement
over stock suspension - and i believe the progressive springs are just that.

My bike come stock with progressive front springs, I went to the straight rate springs and they work much better. Odd that it seems like so many of us here have gone to the Sonic straight rate springs on our GS bikes and like them. You do whatever you want.

[GSXR7ED]

I got a reply from Z1E; they do not carry Sonic fork springs.


Ed

[mmattockx]

I happily accept this is complicated stuff and i am happy with an improvement
over stock suspension - and i believe the progressive springs are just that.

They are an improvement because they are stiffer than the woefully soft OEM springs, but they are still too soft overall. You can get a much bigger improvement by using springs of the correct rate and currently those are all straight rate.

I got a reply from Z1E; they do not carry Sonic fork springs.

Just buy them straight from Sonic. The service is excellent and prices are very reasonable.


Mark

[GSXR7ED]

Sent Request to Sonic.

Ed