Bicycle Mechanics - 1st: why the hell did shimano decide to make it so hard to adjust their hubs?!

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goldfishin
06-13-08, 12:17 AM
why?!!!!!!!!!!!! WHY WHY WHY!!?!?!?!?!??!?!?!?!

and second: how should one clean out a hub when over hauling? i just wiped the races clean but there's still a lot of old grease in the center of the hub body from the last time i did this.


Booger1
06-13-08, 12:41 AM
Practice makes perfect,there not hard to adjust.A rag and some kind of degreaser,simple green,mineral spirits,dish soap,elbow grease....

mechBgon
06-13-08, 01:19 AM
Shimano hubs aren't hard to adjust. I can think of hubs that are much harder to work on. Study the how-to guidance at Park Tool's website (parktool.com) if you're not sure what you're doing.


maddmaxx
06-13-08, 04:57 AM
I just scoop the old grease out with a bag of cotton swabs. (from the race area where I am going to regrease)

HillRider
06-13-08, 05:41 AM
I scoop out the old grease from the hub races and wipe them and the cones and axles clean with a dry rag. I either wipe off or replace the bearing balls. There is really no need for a solvent or degreaser.

The hubs aren't that hard to adjust but it requires a bit of technique. You must use two wrenches, one to hold the cone so it won't shift and one to tighten the locknut. Clamping the wheel in an axle vise held in a bench vise makes adjusting the hubs much easier.

dobber
06-13-08, 07:37 AM
A rag ripped into thin strips will suffice for cleaning the grease from the hub body. Use a thin screwdriver to shove the rag through.

goldfishin
06-13-08, 09:32 AM
i did use the park instructions. i noticed that every time i would turn the nut with the cone held in place that the axel would turn too. eventually i just kept the axel from turning so much using my knee tightned the cone all the way with my fingers and tightened the nut and it rocked as it should.

maddmaxx
06-13-08, 10:05 AM
The big advantage to this form of adjustment is that once the method is perfected, you will be able to set tollerances that are much better than the normal production ones.

With cartridge bearings for example, you get what you get........could be good or bad.........there just isn't a lot of adjustment inside the race.

tellyho
06-13-08, 11:03 AM
Is there a hub that's easier to adjust? All of the ones I've met with loose balls are pretty much the same. Pretty straightforward, I think. Wipe out, replace balls. I'd ignore the crap in between the races - not really going to affect anything. Or just push a rag through with your axle.

silver_ghost
06-13-08, 11:09 AM
Anyone have a good method for keeping the axle from spinning during cone adjustment for those of us not lucky enough to have a vice? I've used vice grips and a rag in the past but I worry about damaging threads.

AndrewP
06-13-08, 01:26 PM
In the days before I use a vise to hold the other end of the axle, I had my wife hold the other end steady with vise-grips but the bribes were a lot more expensive than a cheap vise.

melville
06-13-08, 02:15 PM
Anyone have a good method for keeping the axle from spinning during cone adjustment for those of us not lucky enough to have a vice? I've used vice grips and a rag in the past but I worry about damaging threads.

Make sure the cone and locknut on the side not being adjusted are MF tight to each other, then put a wrench on the locknut (easy if hex headed--17mm) or an extra cone wrench on the locknut or cone, whichever is easier. Use a wire tie to secure wrench to a convenient spoke crossing. Instant McGyver axle vise.

I have an (a few, actually) axle vise at home, but out and about I've done this. Seems I've always got a 17mm combination wrench in the VW toolkit, and the angle on the box end of the combination wrench puts the open end of the wrench right on the spokes. If you need to use a cone wrench, you may end up putting a bend in it, but so what?

Of course, it's always someone else's bike that I'm fixing at the trailhead.........

However, those people have cars where a toolkit and spares aren't necessary.

DMF
06-13-08, 02:20 PM
Shimano isn't hard. I suspect you're having trouble because of the quick-release changes the adjustment.

Try a hub vise that let's you adjust the hub with the QR in place: http://jastein.com/Tools_for_Wheels.htm

or here:

http://www.biketoolsetc.com/Product_Images/SN-HAV.jpg (http://www.biketoolsetc.com/index.cgi?id=737593254562&d=single&c=Tools&sc=Hub-and-Axle&tc=Axle-Vises&item_id=SN-HAV)

bellweatherman
06-13-08, 03:04 PM
I've got to stick up for this guy somewhat. Shimano lower end hubs are harder to adjust than their moderate to higher end hubs. Has anyone tried to overhaul an old Deore hub. OMG! That is terrible.

And not everybody has access to bench-mounted vise and a hub specific tool made for that vise. The most you could expext someone to have is cone wrenches.

bykerouac
06-13-08, 03:10 PM
It shouldn't be too hard to overhaul if you remove one side's cone/lock nut and do not touch the other side. This way, after you clean and regrease everything, you can put it back in the exact same position. Tighten it up and then back off a bit and you're golden.

mechBgon
06-13-08, 10:26 PM
I've got to stick up for this guy somewhat. Shimano lower end hubs are harder to adjust than their moderate to higher end hubs. Has anyone tried to overhaul an old Deore hub. OMG! That is terrible.

How is a Deore any harder than a Deore XT, XTR, Dura Ace or Ultegra? I don't get it. They're all cup-&-cone bearings adjusted using the same types of tools, and the same techniques.


And not everybody has access to bench-mounted vise and a hub specific tool made for that vise. The most you could expext someone to have is cone wrenches.

Hozan makes a hand-held axle vise, for those who really want one. Alternately, a clever person can use their rear dropout and quick-release skewer (or axle nut) as an impromptu axle vise (put the wheel outside the frame, with the QR springs removed, in a fashion similar to the illustration that DMF provided).

The axle vise, or something that serves its function, is the key. Without it, sure, adjusting a cup-&-cone hub is going to be difficult. I don't try driving nails with my bare hands, and I don't try adjusting hubs without the necessary tools, that's just how life is sometimes.

2manybikes
06-13-08, 10:34 PM
How is a Deore any harder than a Deore XT, XTR, Dura Ace or Ultegra? I don't get it. They're all cup-&-cone bearings adjusted using the same types of tools, and the same techniques.



Hozan makes a hand-held axle vise, for those who really want one. Alternately, a clever person can use their rear dropout and quick-release skewer (or axle nut) as an impromptu axle vise (put the wheel outside the frame, with the QR springs removed, in a fashion similar to the illustration that DMF provided).

The axle vise, or something that serves its function, is the key. Without it, sure, adjusting a cup-&-cone hub is going to be difficult. I don't try driving nails with my bare hands, and I don't try adjusting hubs without the necessary tools, that's just how life is sometimes.

Hello !! :)

kevbo
06-13-08, 10:47 PM
Anyone have a good method for keeping the axle from spinning during cone adjustment for those of us not lucky enough to have a vice? I've used vice grips and a rag in the past but I worry about damaging threads.


I got this from St. Sheldon's site, but don't care to go find you a link:

You need two wrenches to fit the locknuts, and two to fit the cones. One pair of appropriate "double" wrenches will work.

Get the adjustment close, then lightly lock both sides.

If it is too tight, put a wrench on each cone, and back them toward the locknuts.

If it is too loose, put a wrench on each locknut and run them toward the cones.

And remember that if the wheel uses a quick release skewer, the adjustment will tighten up some when it is installed and the skewer compresses the axle tube.

mechBgon
06-14-08, 12:10 AM
Hello !! :)

Hello yourself!! :)

/me e-pats Bailey, awww, whosa big doggie?! :love:

bellweatherman
06-14-08, 01:35 AM
How is a Deore any harder than a Deore XT, XTR, Dura Ace or Ultegra? I don't get it. They're all cup-&-cone bearings adjusted using the same types of tools, and the same techniques.



Hozan makes a hand-held axle vise, for those who really want one. Alternately, a clever person can use their rear dropout and quick-release skewer (or axle nut) as an impromptu axle vise (put the wheel outside the frame, with the QR springs removed, in a fashion similar to the illustration that DMF provided).

The axle vise, or something that serves its function, is the key. Without it, sure, adjusting a cup-&-cone hub is going to be difficult. I don't try driving nails with my bare hands, and I don't try adjusting hubs without the necessary tools, that's just how life is sometimes.


Yeah, but the method you described with clamping the wheel outside the dropout works soooooo poorly. Not all dropouts are perfectly flat enough to do this. In fact, on the frames that I have the dropouts are called Wright dropouts, or something like that. It's a stronger design and I think Paragon makes them. They are becoming quite popular on both road and mtb. So, no go on the clamp to the outside of the frame design.

On to tools. The JA Stein tool and the other one, Park I think, requires you to have a bench-mounted vise. Most people don't even have these in their garages! I've never seen the Hozan, so I have no idea how well they work. Do you know if they work well without a vise? Because I just don't see people rushing out and buying this unless they already have a bench vise, in which case they would be a bike shop and not a garage guy with some bike tools.

operator
06-14-08, 07:58 AM
There's no reason anybody needs a vise or any gizmo to adjust the hubs.

1) Undo left side locknut from cone
2) Snug them against each other
3) adjust by hand till it's a little bit loose
4) Run two 17mms to tighten
5) tighten up locknut against cone and done

mechBgon
06-14-08, 10:17 AM
Yeah, but the method you described with clamping the wheel outside the dropout works soooooo poorly. Not all dropouts are perfectly flat enough to do this. In fact, on the frames that I have the dropouts are called Wright dropouts, or something like that. It's a stronger design and I think Paragon makes them. They are becoming quite popular on both road and mtb. So, no go on the clamp to the outside of the frame design.

All right, then go to your LBS and ask if they have a scrap frame or fork that you could have the dropout from :)


On to tools. The JA Stein tool and the other one, Park I think, requires you to have a bench-mounted vise. Most people don't even have these in their garages!

I think if you go to a discount tool outlet (Harbor Freight or wherever), you can get a small bench vise for $10-$20 that'll be suitable for this role. Bolt it to a piece of wood if you don't have a workbench. You don't need a $600 Wilton for this ;)


I've never seen the Hozan, so I have no idea how well they work. Do you know if they work well without a vise?

I have a Hozan in my arsenal. In hand-held mode, it's not nearly as easy to use as a standard axle vise, but it's legit. If you want easy, get a little $10-$20 bench vise and a normal axle vise. I'd normally use the Hozan only to take along to events, where I wouldn't have a bench vise available.

bellweatherman
06-14-08, 11:22 AM
All right, then go to your LBS and ask if they have a scrap frame or fork that you could have the dropout from :)

I think if you go to a discount tool outlet (Harbor Freight or wherever), you can get a small bench vise for $10-$20 that'll be suitable for this role. Bolt it to a piece of wood if you don't have a workbench. You don't need a $600 Wilton for this ;)

I have a Hozan in my arsenal. In hand-held mode, it's not nearly as easy to use as a standard axle vise, but it's legit. If you want easy, get a little $10-$20 bench vise and a normal axle vise. I'd normally use the Hozan only to take along to events, where I wouldn't have a bench vise available.


hmmm, good advice. I didn't know you could get bench vises for so cheap. I had to sympathise with the original poster because I've also had some difficulty getting hubs adjusted just right. Maybe, I'm just too picky with my bearings or maybe I'm just ham-fisted.

Anyway, if I get a cheap vise. Is the Hozan tool that you have made to work in the vise or outside of the vise. I'm just wondering what's the best axle vise tool in case I actually do end up getting a vise.

BCRider
06-14-08, 11:54 AM
There's no reason anybody needs a vise or any gizmo to adjust the hubs.

1) Undo left side locknut from cone
2) Snug them against each other
3) adjust by hand till it's a little bit loose
4) Run two 17mms to tighten
5) tighten up locknut against cone and done

Sorry but if I tried to do it that way I'd be ripping my hair out as well. Your list ignores the fact that the axle will move around which is a big part of the trouble the OP found. It also ignores the fact that skewer tension has to be in place since the skewer tension affects the bearing preload. It also misses the point that many bearing cones are 15mm flats and that you need a special flat wrench to fit the slot style flats. And there's also no mention of the need to check the axle's spin for a very slight drag which indicates the correct preload as opposed to some free play or very tight notchy feels which are too little or too much. There's nothing actually wrong with this list but it simplifies it far too much to be used in the real world.



Getting back to the issue.....
Clamping the one side to a frame or spare dropout is a bit of genius. Kudos to the folks that came up with that as an occasional quick remedy. That tool with the plate and nut for holding the wheel in the vise is another bit of genius. Quite a few years back I made my own version of that and the method works extremely well. Again, for anyone doing much of their own hub work getting one of those or making up something equivalent to use in their vise would be a great tool to have

However if anyone is doing much of their own wrenching I would strongly recomend a vise to use as a third hand. I put the importance of a good vise up there with using the right size wrench or allen key and having the right sized hammer :D. If a person is more than a once a year mechanic or if they are doing work at the level of R&R'ing hubs then they really SHOULD have a work space with a bench and a good vise.

That bench space may be a nice heavy fixed setup with a 50 lb vise or as simple as a B&D Workmate with a clamp on vise but it should be a reasonably good clamp on vise or a small to mid size bench vise bolted to a hunk of 2x8 that can then be clamped in the Workmate. With a bit of imagination the bike stand could be on one side of the 2x8 and the vise on the other and PRESTO! You'd have a great portable apartment or small house friendly bicycle work bench setup that could be broken down and put into a closet in the blink of an eye.

.

2manybikes
06-14-08, 02:08 PM
Hello yourself!! :)

/me e-pats Bailey, awww, whosa big doggie?! :love:

http://img118.imageshack.us/img118/994/baileywink12croppedzr2.jpg :D

mechBgon
06-14-08, 05:58 PM
hmmm, good advice. I didn't know you could get bench vises for so cheap. I had to sympathise with the original poster because I've also had some difficulty getting hubs adjusted just right. Maybe, I'm just too picky with my bearings or maybe I'm just ham-fisted.

Anyway, if I get a cheap vise. Is the Hozan tool that you have made to work in the vise or outside of the vise. I'm just wondering what's the best axle vise tool in case I actually do end up getting a vise.

The Hozan works either in a vise, or hand-held, your choice. It's primo expensive, so if you do get a bench vise, don't get the Hozan.

My favorite axle vise of all time is my steel United Bicycle Tool one, hands down. I've had mine for about 11-12 years now, and it shows no signs of wearing out in the next 20-30 years either :thumb: But you can only get them via your LBS, and you'll probably have to wait a long time for your LBS to do a UBT order, so as an alternative, there's always the basic Park Tool AV-1. The AV-1 has the advantage of soft aluminum jaws so it's extra-difficult to damage your axle threads. They'll wear out faster than the UBT one, but for a home user who's not using it 9 hours a day, it's not going to be an issue.

bellweatherman
06-14-08, 07:50 PM
The Hozan works either in a vise, or hand-held, your choice. It's primo expensive, so if you do get a bench vise, don't get the Hozan.

My favorite axle vise of all time is my steel United Bicycle Tool one, hands down. I've had mine for about 11-12 years now, and it shows no signs of wearing out in the next 20-30 years either :thumb: But you can only get them via your LBS, and you'll probably have to wait a long time for your LBS to do a UBT order, so as an alternative, there's always the basic Park Tool AV-1. The AV-1 has the advantage of soft aluminum jaws so it's extra-difficult to damage your axle threads. They'll wear out faster than the UBT one, but for a home user who's not using it 9 hours a day, it's not going to be an issue.



Fantastic advice. Thanks. You sound like you got a lot of experience with these axle vise tools. Since your Harbor Freight recommendation, I think I am going to get that plus one of the axle vise tools like either the versatile Hozan, United Bike Tool, Park, etc. I guess I am just ham-fisted fixing these things, so I'm going to be a cheapskate getting the vise, but I'm not going to spare any expense with the axle vise tool.

Can I get your recommendation on that one? I'm getting the cheapie vise. So, basically barring no expense on the axle vise tool, what's the best in your opinion? Is it the Hozan or the United Tool, or even the Park or maybe Var? Thanks. I'm kinda leaning towards the Hozan because you said you can use it either in or out of the vise, but I really just want to get the best one for the vise itself.

mechBgon
06-14-08, 10:04 PM
Fantastic advice. Thanks. You sound like you got a lot of experience with these axle vise tools. Since your Harbor Freight recommendation, I think I am going to get that plus one of the axle vise tools like either the versatile Hozan, United Bike Tool, Park, etc. I guess I am just ham-fisted fixing these things, so I'm going to be a cheapskate getting the vise, but I'm not going to spare any expense with the axle vise tool.

Can I get your recommendation on that one? I'm getting the cheapie vise. So, basically barring no expense on the axle vise tool, what's the best in your opinion? Is it the Hozan or the United Tool, or even the Park or maybe Var?

My favorite is the United Bicycle Tool one. At one point I think Kingsbridge was making them, and then they stopped so UBT picked up the ball. Some might argue that the Hozan has the advantage of versatility, but in this day and age, the Hozan's threaded jaws could be a detriment since there are plenty of hubs with unthreaded axle tips nowdays (example: latest-generation Deore XT).

bellweatherman
06-14-08, 11:25 PM
My favorite is the United Bicycle Tool one. At one point I think Kingsbridge was making them, and then they stopped so UBT picked up the ball. Some might argue that the Hozan has the advantage of versatility, but in this day and age, the Hozan's threaded jaws could be a detriment since there are plenty of hubs with unthreaded axle tips nowdays (example: latest-generation Deore XT).


Great info. Thanks for the advice. I'm off to get my hubs dialed in. I can't wait for smooth spinning and no hassles adjusting the hub bearings. Peace.

BCRider
06-15-08, 01:05 AM
I don't know about $10 to $20 for a nice vise. They run a little more than that. My experience with the cheaper sub$30 vises is that the jaws wobble and don't sit parallel thanks to a lot of slop in the ram. A good vise will show very little sign of the moving jaw being able to rattle around.

Also a small vise is a poor long term investment. A vise needs to have some mass to do a good job. I've got the larger 5 inch version of this one from Grizzly tools and I've had it for over 15 years and it still brings a smile of satisfaction to my face whenever I use it. I would assume that the smaller 4 inch version linked below will do as well for most jobs. For my main bench vise I would not want to use anything that's much lighter than the 24 lbs of the 4 inch version linked here.

http://www.grizzlyindustrial.com/products/4-Multi-Purpose-Vise/H8188

If you can spare the extra $10 and don't mind the extra 20 lbs of weight go for the larger 5 inch version. Mind you this one you'll want to attach to a FIXED bench rather than something you put into a closet. A 48 lb vise is not something to be taken... er... "lightly".... :D

nitropowered
06-15-08, 10:48 AM
Campy hubs are easy to adjust. You can even adjust them while they are in the frame. And contrary to popular belief, you can get shimano splined hub bodies for campy hubs.

DMF
06-15-08, 01:40 PM
The Stein "vise" isn't an axle vise in that it doesn't clamp the axle (so it can't damage it). It's essentially a flat dropout that clamps in a bench vise (or Workmate or whatever). And only $11.50.

bellweatherman
06-15-08, 01:45 PM
The Stein "vise" isn't an axle vise in that it doesn't clamp the axle (so it can't damage it). It's essentially a flat dropout that clamps in a bench vise (or Workmate or whatever). And only $11.50.


hmmm, good point. The Hozan one appears to have threads on it and that probably wouldn't damage the axle either. Plus, you can use it outside of the vise. sigh. So many good choices out there. Well, I guess my decision will come down to if I want to use the tool outside the vise or not. All around great advice everyone. :thumb:

edogawa
06-15-08, 09:34 PM
I still don't think you need a vice to adjust a hub. Sheldon's technique works fine. Don't undo the freehub side cone and locknut and just for consistency the right side of the front hub. And as recommended above make then as tight as you reasonably can. Then the adjustments can be done from the left side only. If the right side cone/locknut are tight enough, you can make very precise adjustments by either turning the leftside locknut while holding the rightside locknut to tighten, or unscrewing the leftside cone while holding the rightside locknut to loosen.

Also, preload isn't that finicky. Spinning the wheels in your hands or in a stand doesn't really give you much information because there isn't any loading, which the preload should be set to counteract. I figure most people who are adjusting their bearings are doing it toward the too loose end of the scale. They should certainly be tighter than "barely perceivable amount of play" and probably more than "play was eliminated by this last 1/12 turn of the cone wrench." Another 1/10 turn of the wrench isn't going to slow you down once you're sitting on the bike.

rickowensis
06-15-08, 11:16 PM
I've had excellent success in the shop with this method which requires only the appropriate cone wrenches. Snug up the cone to the appropriate tightness as follows:
DO NOT CHECK THE ADJUSTMENT BY SPINNING THE AXLE AS THIS WILL RUIN YOUR ADJUSTMENT. PULL THE AXLE UP AND DOWN AND IN AND OUT TO CHECK FOR PLAY. IF CONE IS SNUG, NOT TIGHT AGAINST THE BEARINGS AND THERE IS NO PLAY, HOLD CONE ADJUSTMENT WITH A CONE WRENCH AND TIGHTEN LOCKNUT.
To finish adjustment, check by spinning the axle. To loosen adjustment, place a cone wrench on opposing sides of the hub and slightly loosen one or both cones INTO THE LOCKNUTS. If too loose, turn in opposite direction and ensure locknuts are still tight.

No extra tools required and will deliver a perfect hub adjustment.

BCRider
06-15-08, 11:28 PM
You last two guys have the right idea of what you're trying to do. But I've found that doing it in open space like you're suggesting just doesn't work. Invariably the wrong cone or nut will start turning when you're using a wrench on one of the other nuts or cones. Then you're stuck trying to tighten that one and then get back to the side you wanted to adjust.

I guess it's possible but it's just way less fussy to lock the one side firmly and then use some form of axle holding clamp setup so I can move only the cone and locknut on the other side for my adjustments knowing that the axle isn't going to twist on me. I've tried it both ways and once I made up an axle holder to use with my "third hand" (the vise) things got a lot easier and more predictable. I guess it's a classic case of YMMV.