Tail wagging

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Joined
Jul 24, 2008
Messages
193
Location
Rossendale
another thread started with this, ie tail wagging under brakeing and there was a quick piece of advice about more compression damping on the
front and more rebound damping on the rear

now i get the front compression bit, but the rear rebound??? would putting more on, not slow the extension of the shock, making it easier to lift the rear wheel????

mine does this to, so im just wondering the best way to attack it
 
Quick question, are you happy with the way everything is set up at the moment from a handling point of view? If you are, then i'd suggest using the next to useless back brake to it's full advantage here and give it a dab to settle the back before it starts wagging as it is a way of altering and slowing the weight transfer bias without touching the suspension set up.

If you think about the rebound, the spring at full extension is relieving weight from the rear of the bike to its preload setting. So if the spring rebounds too quickly, then the force of the spring moving back to full extension is actually shifting the "weight" vertically. Combine this with the front diving and your body position, and the weight transfer moves to the front and lifts the rear. This is compounded by the rebound setting as it provides a force to "lift" as it fully extends. Draw it out on a piece of paper with arrows in the direction of the forces in action and it becomes more obvious to see.

If you aren't happy with the suspension set up, then search for a thread by DaveRSV I think it was which has a good link as to how to go about setting up sag and static sag. Without these in place first, you are unlikely to achieve what you are looking for.

Personally the tail on mine wags under heavy braking, but everything else is good for me, so i'm content with the tail wagging and using the back brake to dampen the speed that the spring can rebound if needs be.

Hope all of that makes sense, and good luck with getting it sorted :thumbup
 
adding rebound damping isnt making the spring rebound quicker its slowing it down so the tail isnt extending so quickly
adding compresion damping is slowing the front down from compressing
think of adding as slowing - not increasing - as i think you are
 
adding rebound damping isnt making the spring rebound quicker its slowing it down so the tail isnt extending so quickly
adding compresion damping is slowing the front down from compressing
think of adding as slowing - not increasing - as i think you are

By the by, the explanation I gave is generalised in relation as to how rebound works. So yes, what agreat1 says is quite correct in respect of increasing rebound damping and it's effect, but to understand why, you need to understand what the forces are acting upon the spring/forks and in which directions :thumbup
 

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