QUOTE(51'er)
QUOTE(Helvet)
Hyperpro! The only fully progressive spring available.
It works great, at all speeds and loads. Not like Racetech only at high speed or load, they are very comfortable when cruising, and stiff when speeding...
You'll have to explain that to me. The force upon the spring will be the same at any speed.
I guess if you get the correct rate I would prefer the straight rate springs such as the RaceTech as would most riders and racers.
Yes, and no.....
In a straight line you are correct, but when cornering the force on your spring will increase with the speed. That is why you can tilt your bike a lot further at low speeds, and never touch the ground, and at high speeds you will touch the gound a lot sooner....
The choice for straight rate spings is the most common. It is the easiest to adjust (for adjustable shocks). That is why racers use them....
But they are not interested in comfort at low speeds. They don't have to deal with very bad roads. A progressive spring is better for road use. That is why most road bikes (and off-road bikes) have a 2 or 3 stage linear spring. The first part being soft, the second part harder, and the third part very stiff.
The problem with linear springs is that the have a frequency they vibrate in. 2 Stage linear springs have 2 of these frequencies....
You will find that those springs will become unstable at certain speeds. The damping will decrease this, but if you would not have damping, the whole bike would be jumping up and down at certain speeds....
A fully progressive spring does not have this at all.
Check out the story at:
http://www.hyperpro.com