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[Closed] Fox forks '15 hour service'

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The card from Mojo that came with my forks says you need Fox Float Fluid and Fox Suspension Fluid.

Do you have to buy the official Fox stuff or is there a cheaper alternative? Also what weight Fox Suspension Fluid would I need for my Fox 36 Vanillas?

Any other tips or anything else I should know before doing it (bit scared of taking them apart!)?

Ta


 
Posted : 10/10/2009 2:05 pm
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ordinary fork oil from a motorcycle shop. but your warrenty will be void. The whole purpose of the fox servicing schedule is to enable them to get out of paying for warrenty on their unsuitable products


 
Posted : 10/10/2009 2:09 pm
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Anyone without an axe to grind got an opinion? 🙂

In the manual it says you would need 7wt for the oil baths and 10wt for the damper - on the card from mojo it says you should put 5ml in before re-fitting the base nuts, but doesn't say which one.


 
Posted : 10/10/2009 2:15 pm
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you noticed that too, grumm?


 
Posted : 10/10/2009 2:25 pm
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Oil is oil, pretty much. But, viscosities and characteristics vary wildly, there's no 10 10W fork oils that perform exactly the same, mad as it seems (Belray 15W is thinner and "faster" than Silkolene 10W for instance). So, if you're going for an exact result it's not a bad idea to use the exact fluid which is recommended.

Though I'd probably cheap out 😉


 
Posted : 10/10/2009 2:45 pm
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All I do is the following...

Bike updside down, remove wheel/brake

Loosen lower bolts

Knock push rods loose from the lowers with a soft mallet

Remove lowers

Wipe clean lowers seal, keep them upside down to stop muck falling inside. Fully clean if dirt has passed the seals.

Grease seals.

Apply oil to foam rings with syringe.

Slide on lowers a minimal amount.

Pour in any weight fork oil to hand.

Reassemble.

Thats 15mins work tops.


 
Posted : 10/10/2009 2:49 pm
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Slight thread Hijack, Grum shoot me an email if you need some Fox Float Fluid.


 
Posted : 10/10/2009 2:54 pm
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The damper service doesnt have to be done every 15 hours, its just the lowers as Solamanda describes.

Its dead easy to do but is a bit of a ball ache. Definitely do it though, I knackered the stanchions on my Talas's through lack of servicing, but looking back, they were shite forks anyway.


 
Posted : 10/10/2009 3:24 pm
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at 15 hours, they shouldn't really need it. As mentioned above, turn them upside down and let the foam rings soak up some oil. When it does come time to service, the (Fox) 7wt is for the sloshing around stuff. I think it's a rebadged Torco fluid but as it's not doing any damping, the weight isn't hugely critical (still slightly significant due to the hydrodymanic bearing design).

The (Fox) 10wt is rebadged Silkolene Pro RSF is memory serves. The best way to check this is to have a look at thr wiki pages by Peter Van Deron or something similar. He has a lovely long list of oil by viscosity. Match up the numbers and you know what the likes of Fox are using. By the way, the 10wt is for the cartridge damper (depending on year). There's actually quite a good guide to fettling this on the Fox site but I don't do mine any more than once a year.

All I've ever done with any of my three Fox forks is sit them upside down for a while before riding, keep the stanchions clean and change the oil once a year and they're all fine 3 years down the line; and yes, the bikes do get ridden properly and the Peaks has a reputation for being hard on kit. One pair have had the seals swapped to Enduro seals and they've been great.


 
Posted : 10/10/2009 3:25 pm
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OK thanks very much folks.


 
Posted : 10/10/2009 3:30 pm
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[url= http://www.mojo.co.uk/Website2010/html/mtbimgs/Oil%20Volumes%20Forks.pdf ]Fork oil weights[/url]


 
Posted : 10/10/2009 4:25 pm
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[url= http://www.sram.com/rockshox ]This will do it ![/url]


 
Posted : 10/10/2009 4:42 pm
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i'm with solamanda - it takes 15 mins and they're perfect every time.
i'm not sure i do it every 15 hours though.........possibly every 30 hours or so.....guess my warranty is now void 😯


 
Posted : 10/10/2009 5:28 pm
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Do the crush washers need to be replaced or do you get away with using the ones you have taken off.


 
Posted : 04/04/2010 9:09 am
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If you take them off carefully you can re-use the crush washers - I've taken the lowers of mine countless times and haven't had to resort to new crush washers yet.


 
Posted : 04/04/2010 9:17 am
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Cheers I will give that a bash this week


 
Posted : 04/04/2010 9:25 am
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I did my first 15hr service yesterday (after about 50 hours), everything was fine inside and it was really easy to do apart from the damper rod getting pushed back inside when screwing the nut and crush washer back on. The trick is to wind the crush washer on first before the nut without applying pressure.
Used some 7wt oil from the LBS (can't remember brand) and 80-90wt gear oil for float fluid.


 
Posted : 04/04/2010 3:49 pm
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Fox 7w is torco rsf medium. £12 a litre.

Taking the lowers off is very easy indeed. Doesn't stop it being a pita though!


 
Posted : 04/04/2010 4:12 pm
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Used some 7wt oil from the LBS (can't remember brand) and 80-90wt gear oil for float fluid.

Spot on. I get mine from my local motorbike shop and it's top quality. about 7 quid a bottle. I've got a deal with the old man on gear oil where if i take a few plastic syringes in he keeps a couple and fills one up for me and thats my fox float fluid. No way i'd pay for the fox branded fluids (apparently it's just rebranded Torco RSF medium).


 
Posted : 04/04/2010 4:20 pm
 br
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15hrs...

So twice-weekly - seems a bit OTT?


 
Posted : 04/04/2010 4:48 pm
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I wouldnt touch anything made by fox with a 10ft barge pole. Overpriced, overmarketed tat imho. Magura all the way.


 
Posted : 04/04/2010 4:54 pm
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Thats helpful phoenix. Thanks


 
Posted : 04/04/2010 5:06 pm
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Glad to be of service.

Why do people like fox forks so much anyway? I had them and thought they were crap, my marzocchis were better.


 
Posted : 04/04/2010 5:08 pm
 DezB
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that's that sorted then. Fox will go out of business now.


 
Posted : 04/04/2010 5:11 pm
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They were on the bike when I bought it.


 
Posted : 04/04/2010 5:15 pm
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There's a point. How do their after market sales numbers/ ratios stand up to the likes of Rock Shox etc?


 
Posted : 04/04/2010 5:19 pm
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It seems like the depreciation is worse... I guess people are less inclined to trust used Fox kit, just because of the (maybe unfair) rep they've developed.

No axe to grind here but the service schedule does just seem absurd- take your bike on holiday for a week and have to service them after 3 days 😐 I wonder how many hours my Revs have clocked up since they were last serviced? Hard to say since they've never been serviced at all since I got them, and as far as I know were never serviced by the last owner...


 
Posted : 04/04/2010 5:33 pm
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15 hrs seems a bit of a nonsense and is one of the reasons I'll not have Fox forks. I don't recall any of the Puffer soloists servicing their forks in the middle of the night.....


 
Posted : 04/04/2010 5:52 pm
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I didn't get my Floats from Mojo so cann't comment on what the 'little card' may say....
......however if you read the manual on the CD that comes with the forks you'll see that the '15 hour service' is "clean and inspect dust wipers".
The 100 hour service is "inspect bushes, change oil & change Fox float fluid"

So I don't see why people think you need to drop the lowers/change the oil every 15 hours when it's a five minute job with a screwdriver, bit of sticky tape and an oily rag 🙄

[url= http://www.foxracingshox.com/fox_tech_center/owners_manuals/010/eng/index.html ]Fox owners manuals :)[/url]


 
Posted : 04/04/2010 6:18 pm
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>So I don't see why people think you need to drop the lowers/change the oil every 15 hours when it's a five minute job with a screwdriver, bit of sticky tape and an oily rag

Because one slip with your screwdriver and its new stanchion time. Tape on stanchions and spinning the raised seals is a poor substitute for a clean rag. And you get a chance to spot lower stanchion wear early. And change the oil more often.


 
Posted : 04/04/2010 6:33 pm
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The whole purpose of the fox servicing schedule is to enable them to get out of paying for warrenty on their unsuitable products

Or perhaps it's a service schedule designed to keep racing spec components in top condition ?

Lifting the seals and giving them a quick wipe every 15 hours is less hassle than cleaning/lubing a chain - if you don't want to do any maintenance that's fine, just buy lower spec kit and replace when it's totally trashed.


 
Posted : 04/04/2010 6:37 pm
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Because one slip with your screwdriver and its new stanchion time. Tape on stanchions and spinning the raised seals is a poor substitute for a clean rag. And you get a chance to spot lower stanchion wear early. And change the oil more often.

Fair enough, one slip and your Flooksed, just don't slip 😉

The complete oil change may be a more thorough option but it's not part of the fabled "Fox 15 hour service" that people rant on about, I'm just trying to point out that what Fox recommend isn't really that onerous....


 
Posted : 04/04/2010 6:41 pm
 hora
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This topic was posted 5months ago. Surely the grum would have paid out for £2,000 in servicing by now to Fox who would probably STILL invalid any warranty claim on a technicality? 😆

Even Manitou's would be classed as 'great' if they built their tolerances to 15hour service schedules along with the associated tight service schedules.

Buy Marzocchi, pay twice.

Buy Fox and pay the fork equivalent of child maintenance...

JOKE FELLAS 😀


 
Posted : 04/04/2010 6:46 pm
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hora - Member
Buy Fox and pay the fork equivalent of child maintenance...

Not if you're competent with basic handtools and can understand a service manual 😉

The real jokes are the hamfisted yokels who can't work out the simplest of mechanical issues themselves and end up having to slink back to the dealership with a box full of ****ted up bits as result of their bodgery.

I'm glad dealerships and service agents charge high prices and treat your warranty claims with disdain - that's the price you pay for being stupid and mechanically incompetent.
ATGNI indeed 🙄


 
Posted : 04/04/2010 7:08 pm
 hora
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The real jokes are the hamfisted yokels who can't work out the simplest of mechanical issues themselves and end up having to slink back to the dealership with a box full of ****ted up bits as result of their bodgery.

[TANNOY]hora to the forum, I repeat hora to the forum. (Thank you)[/TANNOY]


 
Posted : 04/04/2010 7:32 pm
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anyone know where i can get the talas ifp tool from?


 
Posted : 04/04/2010 8:54 pm
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or if i have 2009 talas rlc (32mm stanchions) are they talas 3 (therefore don't need it)


 
Posted : 04/04/2010 9:01 pm
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Any sheff people wanna go halves on a bucket of fork oil?

Also, do fox rear shocks require so much attention? Reason I ask is I just bought a bike wi fox front and back


 
Posted : 04/04/2010 9:12 pm
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The podge - i am just o/s sheffield and will do if its the genuine fox stuff (i need 7wt)

I have a bottle of float fluid here btw


 
Posted : 04/04/2010 9:19 pm
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Surely the grum would have paid out for £2,000 in servicing by now to Fox who would probably STILL invalid any warranty claim on a technicality?

Still not serviced them though I've barely used them since I posted this because I've been ill. I'm not gonna worry too much about it though - since I fixed my Pikes with nail varnish I don't see why I can't do the same if the Fox forks go the same way. Will probably do it at some point soon.

They are miles better than the Pikes anyway so nerr.. 🙂


 
Posted : 04/04/2010 9:31 pm
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GW, let me work out which one I need and I'll drop you a line


 
Posted : 04/04/2010 9:43 pm
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cool email in profile


 
Posted : 04/04/2010 9:43 pm
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What I find curious though is that with Fox a 85wt oil is applied to the foam rings but the oil bath, which presumably will replenish the oil on foam rings is 7.5wt---whilst RS uses an application of 15 wt to foam rings and 15wt oil bath which would seem to make more sense!!!


 
Posted : 20/06/2010 8:50 pm
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Jamesb i think thats an error personally. Its too thick and would cause the foam rings to tie themselves in knots with the movement of the forks. AFAIK float fluid is to ensure an air tight seal.


 
Posted : 20/06/2010 9:29 pm
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thats what fox recommend to use


 
Posted : 20/06/2010 9:31 pm
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I have lifted the seals 3 times in 6 months to clean under them. Not yet found any dirt and the foam rings have been nice and juicy each time. Trouble is there are a few nicks in the paint on the lowers from levering them out.

I have actually just bought some enduro seals yesterday as I have a bit of oil being drawn up onto the RH stantions so A full oil change etc wll be neccesary


 
Posted : 20/06/2010 9:42 pm
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why do you lift the seals? whip the lowers off - far easier to check everything is ok.


 
Posted : 20/06/2010 9:43 pm
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I think the offical Fox instructions say to push up the seals - whereas Mojo say whip of the lowers 🙂


 
Posted : 20/06/2010 9:47 pm
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why do you lift the seals? whip the lowers off - far easier to check everything is ok.

You are quite right of course, but I am sure everything is ok. Just want to make sure no dirt is collecting above the foam rings and it takes 5 minutes. Im quite anal and I would demand new oil every time the lowers are off 🙂 (and im a tigh arse)

TBH I am stopping the seal lifting after the enduros are fitted. Probably do an oil/ seal change at the end of winter for as long as i have the forks


 
Posted : 20/06/2010 9:50 pm
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you should put new lube oil in the air spring side anyway when you clean the seals as a matter of course. the damping oil lubes the other leg


 
Posted : 20/06/2010 9:52 pm
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I'm puzzled by the Mojo/Fox insructions to use different oil on the foam rings to that you pour into the legs. Given that there's also a recommendation to turn them upside down, and the bushings are slotted, surely as soon as the forks are used these two oils just mix together?

Pretty sure TF Tuned use the same oil for both.


 
Posted : 20/06/2010 10:02 pm
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All I do is the following...

Bike updside down, remove wheel/brake
Loosen lower bolts
Knock push rods loose from the lowers with a soft mallet
Remove lowers
Wipe clean lowers seal, keep them upside down to stop muck falling inside. Fully clean if dirt has passed the seals.
Grease seals.
Apply oil to foam rings with syringe.
Slide on lowers a minimal amount.
Pour in any weight fork oil to hand.
Reassemble.
Thats 15mins work tops.

me too! but I think I'm slower though.


 
Posted : 20/06/2010 10:09 pm
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Every 15 hours is BS, fox forks don't need servicing that often.

Just wipe the seals and flip the bike underside ever few rides to soak the seals and that will do. Unless the seals get knackered they are fine.

TF sell fox oil just badged differently.


 
Posted : 20/06/2010 10:42 pm
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The reason Fox use different oil in the foam rings to the oil bath is that the foam rings are used to suspend fine dirt that bypasses the seals before it reaches the bushings. That's why 15-25hr service intervals are advised. If the dirt gets into the bushings it becomes embedded in the DU material and scores the stanchions and ruins the fork.
The lower bushings aren't slotted so the oil bath 7wt lube can't get to the foam rings anyway, particularly as it's only 5-10ml. It's just there to lube the lower bushing.
Rockshox forks are a far more simplified design. But they still require swercing every 20hrs or so to replace the oil bath. The 15ml of 15wt oil in the bath mixed with Redrum in those is designed to migrate past the lower bushing which is a much looser fit, and the heavier redrum should stick to the lower bushing and provide lubrication and support (in race tuned forks even more so) but the 15wt can migrate up to the foam rings and replenish the oil there when the fork is inverted. These forks don't have an internal oil seal in the wiper seals, and can be considered a constant loss lubrication system. The Lyrik and Totem do have oil seals and no foam rings though, but they use a different damping cart, and require different service intervals.
On balance, the Fox forks have a better damping circuit and are stiffer across the brace for any given travel setting.
So I'll happily put up with the service regime for the performance advantage over similar forks.
But, my 2002 Z1's on my HT are still the best pair of forks I've ever owned, and the the new Ti sprung open bath forks from Marzocchi will be my 1st choice for my next fork.


 
Posted : 20/06/2010 11:25 pm
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I'd rather an open bath fork any day of the week - as that way you know the bushes will be properly lubed.


 
Posted : 20/06/2010 11:27 pm
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Fox ARE open bath TJ - just in one leg 🙂


 
Posted : 21/06/2010 6:54 am
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In 6yrs of riding on Fox forks, 32 Floats/32 Vans/36 Talas the only problem i have had was a second hand pair that needed new seals (thanks to the t#*t who put them on ebay!).

I ride on average twice a week all year and i have never serviced any of them but i always make sure my seals are clean and as others have said, i always lube after washing 😆 and tip it upside down regularly which is not really a hardship.


 
Posted : 21/06/2010 7:31 am
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----once upon a time, with my second pair of forks, set of Pace RC 36 I just injected grease every ride or so!! OK until I forgot / really muddy riding and then they didnt work very well

Moving on from then, anyone know how to do oil changes on RC 40 XCFR??, can`t really find instructions on Pace site with vols etc.
thanks


 
Posted : 21/06/2010 7:39 am
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Thanks---Looks like it!! however on this method am I right in thinking that the lube oil in stanchions is not being changed (only reference seems to be to damper oil) and the foam ring oil is just being topped up?? Is it just the damper side that has a lot of oil in it? and spring side just has foam rings oiled?


 
Posted : 21/06/2010 9:06 am
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In 6yrs of riding on Fox forks, 32 Floats/32 Vans/36 Talas the only problem i have had was a second hand pair that needed new seals (thanks to the t#*t who put them on ebay!).

I ride on average twice a week all year and i have never serviced any of them but i always make sure my seals are clean and as others have said, i always lube after washing and tip it upside down regularly which is not really a hardship

+1

I've never had any problems after years of riding Fox and never had them serviced, I ride every week sometimes twice for 4 hous min.


 
Posted : 21/06/2010 9:15 am
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There is just 20ml (or is it 30) on the air side I think.

I love my fox 32 but would never buy s/h unless the vendor doesn't mind you stripling them. Learnt my lesson after biting a pair with a ruined air-side stantion


 
Posted : 21/06/2010 9:16 am
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I guess Solo riders at 24 hour events have 2 bikes then, or do they service their forks part of the way round?


 
Posted : 21/06/2010 9:25 am
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Hmm, i tend to run with closer to 40-50ml extra fluid in both legs to aid with the splash lubrication and regularly invert them before a ride. I could be wrong but im sure my upper bushings ARE slotted, not gonna take them apart just to find that out though.


 
Posted : 21/06/2010 9:28 am
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Upper bushings are definitely slotted. Surely if you put more oil in it will bugger up travel as less space for the stanchions to move in?


 
Posted : 21/06/2010 9:30 am
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Love the chance to show off this [url= http://www.blogger.com/post-create.g?blogID=6753827003640868870 ]blog[/url] the bushes. Are plain with bearing surface adhered to them


 
Posted : 21/06/2010 10:13 am
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racing_ralph - Member

Upper bushings are definitely slotted. Surely if you put more oil in it will bugger up travel as less space for the stanchions to move in?

I have put 150 ml in a coil vanilla. It still does not ramp up (much) and gets full travel. There is so much empty space in the spring leg that you would need to put half a litre in to get ramp up / loss of travel.

the fork I did this too has a very worn stanchion - you do get oil appearing above the seal now - which shows the bush is getting oiled

racing_ralph - Member

Fox ARE open bath TJ - just in one leg

Which is why the spring leg wears out stanchions but not the damping side.

Inverting the bike to store will solve the issue as doing so allows oil to the top bush. Or put significantly more oil in


 
Posted : 21/06/2010 10:18 am
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so tj - are you saying that i can put more oil in the air spring leg with NO adverse effect on the function of my forks?


 
Posted : 21/06/2010 10:50 am
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Mine were coil but that was my experience.

I don't know the internal layout of the air for. is the air spring a separate unit in the leg or does it use the whole leg?

If you want to do this then I would measure the total volume of the leg and make sure you don't fill it totally with the extra oil. If the total volume is around 500 ml as mine was increasing the oil from 25 ml to 100 ml will not increase ramp up greatly (Boyles law)


 
Posted : 21/06/2010 10:57 am
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am I right in thinking that the lube oil in stanchions is not being changed (only reference seems to be to damper oil) and the foam ring oil is just being topped up?? Is it just the damper side that has a lot of oil in it? and spring side just has foam rings oiled?

I've no idea mate, i just googled it.

I've got Maguras and I don't feel in a huge rush to service 'em 🙂


 
Posted : 21/06/2010 11:08 am