Hi

Can anybody advise as to what pressure to use in a Betor expert rear shock (new) & at 360mm are they the correct length (being a short a*** a 340mm would help me to reach the ground!) any thoughts, please.

SWM 320 1982

i think they are gas pressured and not for you or i to play with..

Their length is ok but as mentioned above the gas isn't intended to provide adjustment, it's pre-set. On Falcons it is 90psi but you have no hope of setting it unless you have the ccorrect type of valve attachment. Put a normal tyre inflator or gauge on it and you will lose all pressure immediately, then when you re-inflate it and remove the inflator it will lose all its pressure before you can fully remove it. They have 90psi in about 1 square inch of volume, you only have to touch the valve stem and it's gone.

Try knocking off the spring preload and get some sag in them which will lower it a little at the rear - without going too extreme which will cause it to sit low at the back and kick out the front wheel and steering angle.

The pump for pressurising cycle forks/shocks is good for at least 120psi and has a built in gauge. These generally fit onto Shreddar type valves. The pressure can be fine tuned with the pressure release button, again built into pump. All this assuming your shocks are suitable.

Edited February 2, 201115 yr by B40RT

Gilles Burgat ,on his world champion works bike;rode with 340 mm girlings ,instead of 360.and he is a tall guy.