|   Super-T Oil Volume? | Photo-John
Aug 8, 2002 9:04 AM | | I'm changing the oil on my 2001 Super-T and I'd like to know how much oil to put in each leg to get the right oil height. I don't want to have to guess. Also, I can't remember what the right oil weight is. I have three quarts of 5 weight that I bought to use for the Super-T a few months ago but I was thinking of changing the weight then. Is the 5 weight normal or softer?
Photo was taken yesterday and is a little downpayment for your help :-)
John |
| Oil in a Marzocchi fork is not measured by volume but... | Squash
Aug 8, 2002 12:57 PM | | by measuring the oil height in relation to the top of the stantion tube. In the instance of the Super T the oil should be 100mm from the top of the stantion with the fork fully compressed for a 120 to 180 pound rider or 90mm from the top for a 180 to 200+ pound rider. This measurement is taken from the top of the stantion tube down to the surface of the oil. Do not exceed the maximum of 90mm. The minimum can be fudged a little down to 115mm safely, or you can set it anywhere in between. Oil height is used by Zocch to adjust how progressive the fork is near the end of it's travel. The farther the oil is away from the top (100-115mm) the less progressive, the smaller the distance (90mm) the more progressive. Make sure that after you fill the oil that you pump the fork up and down a few times to get all the air out of the cartidge or you will have zero damping. Once you pump the air out of the cartridge you will need to check the oil level again and bring it up to the height that you want. Just a suggestion, If you are happy with the way your fork performs now I would measure the current oil height in the fork and refill the fork to that measurement. As for the oil wieght, the stock oil in the fork is 7.5w. 5w oil will probably give you a little less damping than the stock oil so you'll probably have to make adjustment for the lighter weight should you descide to use it.
Good Dirt |
| Thanks, but | Photo-John
Aug 8, 2002 1:46 PM | | I already know how Marzocchi measures it and I know how to fine-tune it. But it's a lot easier to get started if you know how many cc's of oil to dump in. That's what I wanted to know. But thanks for your detailed post and thanks for the oil weight. Gotta score some 7.5 today, I guess.
I wasn't happy with the feel of my fork and that's why I'm changing the oil. After a year of riding without ever changing the oil it was starting to feel like a brick. And the oil I dumped out looked like liquid metal :-)
John |
| All done - Thanks! | Photo-John
Aug 9, 2002 7:56 AM | | Thanks again. I didn't want to appear ungrateful for your advice. I weigh about 170 so I set the oil at 95mm. We'll see how that goes. Whe you say "progressive", you mean on big hits the fork will ramp up more at the end and be less likely to bottom, correct? I never used to bottom it out so I figure I'll make it a little softer. Sound good?
Thanks again.
John |
| Sounds about right if you do drops and... | Squash
Aug 9, 2002 7:33 PM | | such. You may find it a little stiff otherwise. But yeah, by progressive I mean that it ramps up at the end of the travel and resists bottoming better. As far as the measurement in CC's for Zocch forks, I've never heard of anybody using a volumetric measure ment to fill em with. Zocch doesn't give one for any of their forks other than the Xflys. Glad you got it done, you were over due for an oil change by the way. Should have changed it out after the first couple of months. Oh well, it's done now.
Good Dirt |
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