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Old 11-15-2006, 07:14 AM   #1
jrock
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Fork oil

How often ( if ever) do you change your fork oil? Is there any symtoms that would give you a clue as to when it would need to be changed?
And no, I am not a bike maintenance phobiac . I just like to gain some knowledge in the area of bike maintenance.

Just looking for some info. Thanks.
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Old 11-15-2006, 07:30 AM   #2
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Old 11-15-2006, 08:29 AM   #3
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For most street bikes with stock suspension, 10k is sufficient. If you're doing a lot of trackdays / racing, then I'd recommend at least once a season.

The oil used by the OEM's is not that great, and on top of that, if it has never been serviced before, there's a lot of trash floating around in there from the manufacturing / assembly process.

Whoever does it, or if you do it yourself, make sure to fully disassemble the fork and cartridges and clean them out.
I can't begin to tell you the number of forks I've pulled down that were "recently serviced", that had clean oil, but the cartridge / valving were full of sludge.

As far as performance loss, it's a gradual thing, so some riders don't really notice a change in the bikes handling until it gets really bad.

Paul Thede, the founder of Race Tech, has a saying; "If you notice a huge difference by changing your fork oil, you've waited too long."
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Old 11-15-2006, 08:34 AM   #4
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what do you mean buy your bike handling different
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Old 11-15-2006, 08:38 AM   #5
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Damping typically will be harsh, the forks will have a lot of stiction.
In extreme cases the valving can get so full of trash that a shim stack can be held open by it, creating a situation where you have no damping.
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Old 11-15-2006, 08:39 AM   #6
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I have an article in SportBikeUK magazine that covers fork oil changing and they reccomend replacing the seals as well while your there. The whole process doesnt seem that hard but I'm still a little wary of messing with any suspension component of my bike. I am not a stranger to turning wrenches.
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Old 11-15-2006, 08:57 AM   #7
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oh ok hey patrick i might go to your shop today for some parts
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Old 11-15-2006, 09:08 AM   #8
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patrick, whats the price for a suspension overhaul?

at 16k it seems pointless to get the suspension setup for me, when it sounds like its gonna need service soon.
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Old 11-15-2006, 09:12 AM   #9
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Scrapp,

I am overhauling mine this weekend.

If you want, ride her out here, we can lift her with the other 20 ton crane and change the oil out.

I am offering not to take business from Patrick, but because I know you have no job.
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Old 11-15-2006, 09:15 AM   #10
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wait wait awit wait wait....do you know what your doing?!!

also, are you gona completely clean the buzzerds out or just replace teh oil? (because I also REALLY want to learn how to do it)
also...wait...how much is the oil, my simolieons are low.
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Old 11-15-2006, 09:23 AM   #11
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Quote:
Originally Posted by scrapp
wait wait awit wait wait....do you know what your doing?!!
For the most part, yes. I have the torque settings from the 954 service manual. Our bikes are different but they were manufactured in the same model year by the same company so the 954 torque settings should work for your RC. You will just need to pick up some 10w oil and ride out this way.

Quote:
Originally Posted by scrapp
also, are you gona completely clean the buzzerds out or just replace teh oil? (because I also REALLY want to learn how to do it)
also...wait...how much is the oil, my simolieons are low.
On mine, I am changing everything out: Springs, valves, oil, ext.

I have no way at my house to lift the front end of the bike, so i am coming up to the office to strap her up to the 20 ton overhead crane.
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Old 11-15-2006, 09:27 AM   #12
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ahh i dont have the money to do all that, im SOL. Ill just have to wait another time, or go to patrick.
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Old 11-15-2006, 09:31 AM   #13
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Quote:
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ahh i dont have the money to do all that, im SOL. Ill just have to wait another time, or go to patrick.
We don't have to do all those things to yours if all you want is a fork oil change. I have plenty of varsol to make sure your stock valves are clean. All you need to do it buy the right oil and ride her out here. I am going to tackle it Sunday morning. You have been to my shop so you know where it is at right?
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Old 11-15-2006, 09:42 AM   #14
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I dont even think I have money for the oil. been to the shop...hmm...I cant remember, I dont think I have.
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