Gents, this seems to be a well discussed topic but as I hold mine up and try to make them work like a suspension unit, it seems they are very hard indeed.
This is actually a continuation of the problem I was having getting the headstock to tighten up nicely around the balls on the head races. Glyn sent a pack of bearings for me to examine and the problem seems to be that when I tighten the round nut on the top of the headstock, compressing the two forks together, the sprung part of the forks didn’t want to go down to meet the balls on the frame. New brass bushes had been made for the fork bottoms when I bought it and these were too close a fit and preventing a free movement of the fork legs within.
Still though, there appears to be no springing whatsoever of the suspension cylinder and when I use a jig to try to compress it, it still seems stuck, as if rusted in place. Has anybody come across this because it is in my hand now and I might as well try to get something resembling suspension.
It appears like I might be able to get a bit of play in the bottom button to appear and then possibly cut the spring to allow it to be separated. Are these springs available if this has to happen.
There are two lengths of spring, one for the long headstock and one for the short headstock. Have you got the correct spring? If you try to fit a long spring in a short headstock fork, the whole thing will be near enough solid!
Thanks Richard and I will visit Barnet when I have been through a few more things. As for the different spring length Dave, well that might explain it. My steering races on the frame measure 8 inches ball to ball and the suspension part on the forks measures 10 1/2 inches button to button. The fat part of the suspension is 6 1/4 inches and I have a loose main spring that measures just over 6 1/2 inches which is quite bouncy. If you stick that spring into the fat part of the shock absorber I can’t imagine there would be much room for any springing of any sort and my own bike is pretty solid an affair.
How do these dimensions compare with yours Dave or others folk’s please?
How long are the mainsprings and is there a choice. Mine should be around 6 inches me thinks to offer any degree of bounce.