Quote:
Originally posted by iang
No, I got a length of wire and measured from where the centre of the ball joints is at the top to the centre of the ball joint at the bottom.
Is this wrong ??? about how much thread should be showing and did you have to turn the bar loads to get this length.
Also did you do this without dropping the forks or anything and did it make a difference |
cant get to my bike to check but i remove tie bar and measure it. once its set the thread is 1.5 pitch i think so a full turn would take it from 285 to 286.5 for example. remember for road use you probably have more sag and a softer setup so bike sits lower so can in theory increase ride height but if its a 749 youll also run a 180/55 tyre which if memory serves is 12mm taller than a 999 and its 190/50. i'd start at 285 on the tie rod and probably 35mm sag, maybe even 37 if you ride stuff like the keilder/newcastleton/ jedburgh roads.
on spring preload the way the tech companies measure it is by spring length, a 749 should have a 160mm spring un loaded measured from flat part of spring to flat part, usually preload is about 10 -12 mm so spring length in bike is 150 - 148mm. I'm 65 kg and run a 70 spring on my 999 with cast swingarm and 11mm of preload. it'll bottom every so often.
Forks make a big difference and its worth going to 3 or 4 lines showing
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