GHEA pistons (which way up!)
 

This is probably a daft question but just got some GHEA pistons for my B44.1, which way do they go in tappered side up or down?

tapered side down :thumbsup:

Why:eh?:?

faster return :)

Either way...:lol::)

If I understand it right the spring absorbs the bump and it is the job of a damper to control the return. If a faster return was better then surely no damper would be 'best'.

I too understood (and read somewhere) that it doesn't matter which way up they go.

then you understand it wrong...

The damper works in both directions and its task is to dampen the movement/oscillations you would get if you had only a spring.

The Ghea piston is designed so that you have a slightly different damping rate in each direction.

You also understand it wrong grelland
Cause they cannot return faster cause that's impossible! They are linear in or out
Cheers

This has been done to death previously, and the man himself (ghea) confirms from testing that rebel is correct..

http://www.oople.com/forums/showthre...830#post465830

Cheers Dazzler:thumbsup:

Don't get me wrong, they defo make a difference but just not in the way people are stateing
Not sure what it is though! Lol

The taper is down to keep the piston from hydro-locking against the shock body when fully extended . By hydro-locking I mean temporaraly stuck to shock bottom. The taper leaves a little oil between the piston and shock. It makes for a smoother ride.

Moth you are wrong ! Read the link above cheers
That already been suggested
:lol:

Hehe, this has been fascinating. :lol:


So, that cleared up, what would be wrong with a shocker that had 'no' damping in upward wheel travel and only damped on downward travel? An extending spring with no damping would cause a chassis to bounce after a bump so there is clearly a case for damping in that direction but why damp the other way? Surely a wheel can move more fully up a bump with less damping, no?
For the purposes of an answer let's remove cornering from the equation.

The only reliable way of getting two stage damping on a 1/10th is to valve the piston like Richard weatherley did with the pred years ago.
I have problem with Ghea and their excellent products and yes machined (not moulded) pistons are a great idea in my opinion and do make a difference in a good way. And their service and information is great
Would be nice to see people trying the valve method as it defo makes for a quicker return with pack as desired

So, is that the universal desire then, more damping piston going in than going out?

Thank god for you being right:confused:

Thank god I was right about some thing once! And I am not letting go of it. Lol:thumbsup: cheers

can we get a graph of tapered vs non tapered dyno test to see why they work?

I stand corrected :)

At least I was right when I said the previous poster was wrong:thumbsup: