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 Post subject: Seized Tune Mag 170?
PostPosted: Fri Apr 19, 2013 9:20 am 
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Joined: Tue Jun 19, 2012 11:45 am
Posts: 29
Hi People.

In need of a little knowledge. I have a Tune Mag 170 hub with Campagnolo freehub body on a Focus Izalco.
The problem is that the hub does not freewheel at all when on the bike. It will freewheel in your hand albeit not the smoothest however once it is mounted on the bike it will not move at all backwards :noidea:

Any ideas on what could be causing this issue? The hub has never worked since being bought so it is not something that has come on over time.

I'm not sure how the freehub comes off however I assume it just pulls off like DT 240s as I have removed the end cap of the axle but cannot remove the free hub body

Any help would be great!
Tim.


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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Sat Apr 20, 2013 1:15 am 
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Joined: Tue Mar 10, 2009 5:27 am
Posts: 1244
Location: McCall, ID
It sounds like your cassette may be bottoming out on the frame. Have you checked the clearance between the lockring and the dropout?

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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Sat Apr 20, 2013 5:20 am 
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Joined: Tue Jun 19, 2012 11:45 am
Posts: 29
Zen Cyclery wrote:
It sounds like your cassette may be bottoming out on the frame. Have you checked the clearance between the lockring and the dropout?


Looks like you're right. I pulled the end cap off the hub on the drive side, and there is one washer before the bearing? It seems I need a thicker/more washers to space the end cap out so it clears the lockring. Any idea if this is a Tune specific washer or where I can get a hold of these particular washers?

Thanks.


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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Sat Apr 20, 2013 5:22 am 
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Joined: Tue Mar 10, 2009 5:27 am
Posts: 1244
Location: McCall, ID
Pull the cassette off and put it back on the bike. If it spins freely, then it's a cassette spacing issue. Pulling the endcaps won't fix this. Perhaps there is a spacer behind your cassette that needs to be removed?

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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Sat Apr 20, 2013 4:28 pm 
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Joined: Thu Apr 17, 2008 1:07 am
Posts: 997
Location: San Juan, Puerto Rico
Could be as mentioned cassette spacing issues...either on the hub side or the frame.
Or you have too many washers between the freehub and the end cap.
Ont he Mag 170 these washers adjut the preload ont he hub...so too many of them puts too much load on the bearings when clamped ont he frame.
If it spins freely out of the bike but not on the bike you have any of the above issues and you can discard any internal/freehub issues.

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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Sun Apr 21, 2013 4:19 am 
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Joined: Tue Jun 19, 2012 11:45 am
Posts: 29
Well I tested the wheel on the bike without the cassette, the hub seems to freewheel without slowing down the wheel. So I believe it's a cassette spacing issue? I've attached pictures if it makes any more sense. It seems the cassette sits too far outwards and hence sits further out than the axle top cap which is what should be clamping to the dropout (First picture), but instead the lock ring seems to be hitting the dropout. I'm not sure how to get the cassette to sit further in? It doesn't seem like there is a spacer to remove, the ring on the freehub body seems more like a seal with an o ring...

Image

Image

Image


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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Mon Apr 22, 2013 12:16 pm 
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Joined: Tue Jun 19, 2012 11:45 am
Posts: 29
Has no one got any ideas on why this happening? Thank you! Really want to get this wheel going!


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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Mon Apr 22, 2013 12:27 pm 
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Joined: Wed Apr 25, 2007 10:23 am
Posts: 1010
Location: Pack filler
Sounds like you've got the campag spacers all jumbled up....

(although i cant see your pics)...

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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Mon Apr 22, 2013 12:35 pm 
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Joined: Mon Jan 02, 2006 7:10 pm
Posts: 497
Are you sure you have a compatible lockring? There have been a number of generations.

Either way, it does look like you could find one with a lower profile.


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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Mon Apr 22, 2013 1:01 pm 
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Joined: Tue Jun 19, 2012 11:45 am
Posts: 29
Casette spacers are arranged exactly how they are on a fulcrum 5 wheel which works perfectly well with the same cassette and bike...The older generation lock rings have different threads no? And hence incompatible...

Is it possible I need a thicker washer behind the end cap to space it out past the lock ring? I can't understand why the cassette extends past the end cap, surely the Tune hub is missing something? :(


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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Mon Apr 22, 2013 2:37 pm 
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Joined: Sun Feb 06, 2005 4:22 pm
Posts: 3668
Location: Tucson, Az.
It's definitely not spacers as those are not used to create length but only to adjust preload. Adding spacers will just cause the axle to bind. It's possible you have the wrong end caps on the axle, measure your OLN and see if it's at 130-131mm.

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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Mon Apr 22, 2013 8:16 pm 
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Joined: Sat Mar 21, 2009 1:59 pm
Posts: 44
Location: London, England.
To my eyes - and I have a Tune Mag fitted on my race wheels - your largest cog on the cassette looks way too close to your spokes. I thought maybe it needs an extra spacer there, but you say your lockring is also too far out and is touching your dropout. LIke your cassette is too wide.

It's almost as if you have a 11-speed cassette mounted on a 9-speed hub or something.

Maybe it's time to measure the freehub?

R.


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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Tue Apr 23, 2013 11:18 am 
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Joined: Tue Jun 19, 2012 11:45 am
Posts: 29
OLN measurement I'm fairly confident is around 130~131mm (Don't have calipers at home to get exact measurement).

The other possibility I was thinking is the metal ring at the base of the free hub possibly around the the wrong way? If it faced the other way the groove would sit more flush with the rubber o ring? (Picture 2) I'm really starting to grasp at straws here!


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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Fri Nov 15, 2013 8:32 am 
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Joined: Mon Jun 02, 2003 8:17 am
Posts: 6327
Location: Drenthe, Holland
Tig, please listen to what Madcow is saying. He sees a lot of tune hubs in a year and should be quite in the know for any problems.

Thanks.

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 Post subject: Re: Seized Tune Mag 170?
PostPosted: Fri Nov 15, 2013 9:17 am 
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Joined: Tue Jan 23, 2007 11:22 am
Posts: 3657
Location: Leg hurty
What you have there appears to be 9/10 speed freehub body and end cap. An 11 speed cassette is too wide to fit it.
You need an 11 speed body and cap, which can be bought from Starbike as a kit I believe.
:wink:

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