Join Date: Jul 2008
Location: Railton, Tasmania, Australia
Re: Pre-load adjuster on Wilbers
The 2 screws on the cannister adjust the low and high speed compression damping rates. Rebound damping is adjusted by the wheel on the shock unit itself. Preload on the spring is necessary if you intend to buy a Wilbers shock, as you will be asked for your weight, the percentage time you operate 2-up, with/without luggage and riding style. When the shock unit is built the spring will be rated such that no preload is required for single rider operation unloaded, from there the preload is used progressively. Fully laden my bike goes just on the allowable 600 Kg and the preload is set at 8 full turns of a possible 12. Bike feels perfect in every situation and never bottoms out, I can't recommend the Wilbers highly enough, money well spent.
1987 Yamaha TY250R
1991 Aprilia Climber 280
1988 K100RT (the pack horse)
2005 K1200LTE Light yellow metallic