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Hello to all,
I built a 450 single using a Moretti frame.
The recommended forks are 35mm Showa from a Honda NSR 125. (And triple clamps).
The static sag is 20.6mm, loaded (me sitting on it) is 46mm. That seems to me to be somewhere I would expect, bit too much loaded sag (10mm)
Pot holes and hard breaking they compress enough for the front guard to touch the exhaust header (if doing a left turn slowly, not in a straight line)
I know I need to trim the front guard (fender), or preload the fork springs perhaps 20mm with a spacer or short springs.
I assume the correct fix is to fit heavier or progressive springs,,, this is where I start to cry poor....
Any ideas or suggestions ?
I used 318cc of 15w oil and left 130mm air gap.
Heavier weight oil ?

Regards
Graeme

Graeme, front fork springing has so many variables its a bit of a minefield......so here's my simplistic answer.....put a couple of 20mm spacers in to preload the springs and see what that does.
Cheers, George

I'm with George, try 20mm spacers. Heavier weight oil might slow down the compression but won't stop it.

Ian