How much fork oil??

[keith_eire]

Hi lads, I just replaced the fork seals on the race bike and put some new fork oil in one of the legs but it seems a bit too hard so am thinkin I've put too much oil in (464ml). The forks have k Tec 85lb springs in them so would anyone know how much oil should be put in with those? Thanks lads.

[mick41zxr]

Fork oil is usually measured in air gap, usually in a range of 90-120mm, both legs the same. Height is part of your set up.
Regards,
MB

[keith_eire]

Thanks Mick, I've obviously used way too much oil but I think maybe the oil is too heavy also. I got it off a guy in a local bike shop and told him it was for a race bike so he said the stuff he gave me was medium? Any idea what grade oil I should be using?

[mick41zxr]

It really depends on the fork set up, 5 to 10 wt is common however you need to know how the fork has been set. If you dont know what valving & spring you are running I suggest a visit to a suspension tech.
Regards,
MB

[keith_eire]

Thanks again Mick, thought I'd be able to sort them myself but looks like I'll just have to take them to an expert like you said

[mick41zxr]

Look you may be ok, but once the fork is done a good tech will give you a build sheet with oil height & weight setting for you to do, you should get a log of everything. Fork oil fouls quickly I do mine twice a season.
Regards,
MB

[cargo]

I never touch the damn things................only one man in Ireland for that job


Clarance Bell................... PLR Suspension

[keith_eire]

Yeah I spoke to Clarance up at the Motorcycle and Scooter show in Kingshall lat feb I think it was, he serviced my white power shock for me. I have his card somewhere I'll get him to set them up for me for next year! For now it apears the dampers in the fork's were gone, we stripped them down and replaced them and they seem much better now with 120mm of 5wt oil. They'll get me through the last tract day on Sunday and then I'll get them serviced by Clarance, thanks for the advice lads

[Max4music]

If its of any help, Ive got K-tech reworked forks with with 8.5 springs. K-teck recommended 5wt oil with a 140mm airgap.

Hope you got it sorted.

Max

[keith_eire]

Yeah got sorted thanks, after stripping them down twice we discovered the dampers in both forks were seezed....replaced them and now all is perfect. Was told the bike had been stood for over a year before I got my hands on it so am in the process of giving everything a good going over, thanks again for the reply's