Raising oil level 2011 forks?

[fire1998]

Need to bring my oil level from 130 to 110 in my 2011 zones. Anyone know what that would equal in cc's?
Thanks

[swazi_matt]

I don't know the internal diameter (id) of your shocks but can tell you how to work it out
Vol=pi x id x h
So in cc that would be 3.14 x id (in cm) x 2cm

[lankydoug]

Les at LTR gave me that info for the 50mm Zokes on my Husky so I bet he could tell you what you need to know.

[wasp4banger]

Originally Posted by swazi_matt

I don't know the internal diameter (id) of your shocks but can tell you how to work it out
Vol=pi x id x h
So in cc that would be 3.14 x id (in cm) x 2cm

Sorry to correct you Matt, but the above would give the area of the internal curved surface, pi x d gives the perimeter I'm afraid. (unfortunately for me, I'm a far better mathematician than rider!)

about 100cc per leg I reckon. The volume should be pi x id x id x h / 4, remember area is (pi x id^2) /4 or pi x ir^2.
Hope this helps.

[thumperrider1]

I would just add 20cc at a time in each leg with a syringe via the bleed screw until it feels good and isn't bottoming out.

[lankydoug]

I was thinking it was about 13cc equals about 10mm in oil level but I wouldn't swear to it.

[2whlrcr]

Geez, I guess I should have stayed awake in math class after all.

[GMP]

You will also have to account for the volume of the inner tube wall and damper rod spring guide to be totally accurate in relating a volume to an oil level change as done on the bench.

[swazi_matt]

Originally Posted by wasp4banger

Sorry to correct you Matt, but the above would give the area of the internal curved surface, pi x d gives the perimeter I'm afraid. (unfortunately for me, I'm a far better mathematician than rider!)

about 100cc per leg I reckon. The volume should be pi x id x id x h / 4, remember area is (pi x id^2) /4 or pi x ir^2.
Hope this helps.

You are 100% correct. I was going to sleep when I did it and this morning it struck me! Was hoping I could sneak back in and change it without anyone knowing lol

As for deducting spring and push rod, isn't the oil height measured with all of this removed? So all you need to do is to do the calc, get a cc syringe and add through the bleed hole

[noobi]

Originally Posted by swazi_matt

You are 100% correct. I was going to sleep when I did it and this morning it struck me! Was hoping I could sneak back in and change it without anyone knowing lol

As for deducting spring and push rod, isn't the oil height measured with all of this removed? So all you need to do is to do the calc, get a cc syringe and add through the bleed hole

I think its done with no spring, but everything else present. I just do it by volume. If you knew what the oil height and the volume of oil you put in was you could work out what the ratio of volume/height is.