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Shock Rebuilding/valving/spring Rates Etc.

Omurru
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Omurru Veteran

Omurru

Posted
Posted

Alot of the blokes I work with ride bikes and rebulding/revalving shocks seems to be a standard every day thing for them, they continously have shocks at work that their rebuilding and it doesn't seem all that hard, how come it seems to be almost black magic when it comes to doing it for cars? I don't have a huge understanding of it all yet and neither do some of them, they just say yeh we get the specs for valving/spring rates for our weight and bike of the internet and just do it.....

Now in trying to understand how all this works I am presuming there has to be some sort of relationship between spring rates and valving? I have always wondered when you buy these cheap chinese coilovers and they offer multiple spring rates for the same shock how well does that work?

_Ryan_ Grand Master

_Ryan_

Posted
Posted

koni's can be done in your shed eaily from what I know, Bilsteins require gas, so not as cheap/easy to do.

Most (push)bike forks are like a Koni, oil only, or with pressurised air provided by a hand pump.

_Ryan_ Grand Master

_Ryan_

Posted
Posted

it sounds like you are in a position to give it a shot, grab a cheap set of bilsteins etc in need of a rebuild to play with, and go from there IMO. Do some reading, learn from those around you etc. Assuming you have a shock dyno?

  • 1 month later...
CoZZm0 Apprentice

CoZZm0

Posted
Posted
Alot of the blokes I work with ride bikes and rebulding/revalving shocks seems to be a standard every day thing for them, they continously have shocks at work that their rebuilding and it doesn't seem all that hard, how come it seems to be almost black magic when it comes to doing it for cars? I don't have a huge understanding of it all yet and neither do some of them, they just say yeh we get the specs for valving/spring rates for our weight and bike of the internet and just do it.....

Now in trying to understand how all this works I am presuming there has to be some sort of relationship between spring rates and valving? I have always wondered when you buy these cheap chinese coilovers and they offer multiple spring rates for the same shock how well does that work?

Shocks are there to control the springs. If you have a stiffer spring, you need more damping to control it. That's my basic understanding of it all. I have found this pretty simple, but helpful detail on some 'home style' rebuild on a Bilstein monotube shock:

http://www.honda-tech.com/showthread.php?t=2415915

I'm trying to reserach and learn as much as i can about it as i really want to increase my knowledge of it all, but as you say, it seems to be a bit of a black art and sometimes the specialist tools required can make things harder.

I also found seraching on youtube for shock rebuild videos came in very handy for a wide variety of different types of shocks. One person on youtube has over 700 videos of just shock rebuilds, mainly for ohlins motorbike shocks.

  • 1 year later...
odessy Enthusiast

odessy

Posted
Posted

Digging up an old one. Anyone out their who has rebuilt some Bilsteins? I have seen a DUI thread and it doesn't seem all to difficult, only problem being regassing them which I have a found a bike shop that would do it (I think).

I have an old set hear I picked up for cheap that I was going to muck around with, anyone want to give me some tips?

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