6 mm spacer

[gabi81]

too lazy for that

[thunderbolt]

You don't need to alter the air gap, you may need to adjust the preload to get to around 25mm static sag. you also imo don't need a 6mm spacer, a 3mm or maybe 4mm will be enough.

I have a Sachs rear shock unit on my VTR.



The 4-6mm spacer thing will not work for me as my shock is probably a different length eye-to-eye than the standard one. Can anyone tell me the distance eye-to-eye of the stock rear shock so I can work out if I need to jack my rear up a bit or not.

Thanks

[VTRDark]

Standard shock is 345mm centre eye to eye and don't exceed 350mm. This should be the max you go.



(:-})

[fabiostar]

to flog a dead horse as they say, is there any other bike with a shock that length or close?

[8541Hawk]

You don't need to alter the air gap, you may need to adjust the preload to get to around 25mm static sag. you also imo don't need a 6mm spacer, a 3mm or maybe 4mm will be enough.

I have a Sachs rear shock unit on my VTR.



The 4-6mm spacer thing will not work for me as my shock is probably a different length eye-to-eye than the standard one. Can anyone tell me the distance eye-to-eye of the stock rear shock so I can work out if I need to jack my rear up a bit or not.

Thanks

There is no need for a spacer as that shock has ride height adjustment on the bottom mounting eye

[8541Hawk]

For the air gap question, most likely you will not need to change it, though the pre load will change.

Don't know how versed you are on suspension set up but the air gap controls bottoming in the simplest terms.

If you bottom out, decrease the air gap, if you go "stiff" at the bottom of the fork travel increase the air gap....again in the simplest terms.

SO the extra weight on the front end "might" cause you to start bottoming out but it is easy to fix if you do have this issue

[thunderbolt]

Standard shock is 345mm centre eye to eye and don't exceed 350mm. This should be the max you go.



(:-})

So Carl if I adjusted the shock to 350mm would that be equivalent of a 5mm rise at the rear (the same effect as done by a spacer on the OEM rear suspension)?

[VTRDark]

Exactly and FYI those measurements including not going over 350 is what I was told by Roger. Centre to centre of each eye that is.

For the air gap question

Well done on the air gap answer that seemed to have got missed and it was the OP's original question I notice after going back through the thread. That's what I call cleaning up

(:-})