Max_Morley wrote on 10/05/11 at 16:59:35:Spacer goes on top of the spring. Schedule 80 PCV pipe spacers could be cut to drop the preload and height some. Some sidecar drivera do this to shoten the trail for easier steering with the car on, not recommended when car is not on. Max
If danman1 wants to "lower" the forks, then he's talking about spacers that slide onto the damper rods that essentially prevent the forks from extending to their full stock length -- not the ones at the top of the fork tubes. Those are preload spacers.
danman1, use a caliper to measure the diameter of the damper rods to get the inside diameter of the spacers. Add just a bit so the spacers slide on easily. Then measure the diameter of the widest part of the damper rod, or of the small springs that fit on the damper rod. Use that for the outside diameter of the spacers. When you reassemble, the spacers go on the damper rods before the springs.
scubachef, handlebars might have the correct inside diameter to slide onto the damper rods, but I wonder if their wall thickness provides enough load bearing surface with the small springs.