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 Post subject: Wheelset rim change
PostPosted: Sat Jan 04, 2020 11:48 pm 
Retro Guru

Joined: Sun Apr 25, 2010 10:07 pm
Posts: 2275
I have a DT Swiss/WCS wheelset from 2010 and as the rims are very ropey(cosmetically) I want to change them and relace to new 29er rims.The hubs are 240S and the best Ive ever had and Im terrified of damaging/cracking the flanges on the rebuild,Ive never rebuilt on older well used hubs,am I being over cautious?


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 Post subject: Re: Wheelset rim change
PostPosted: Sun Jan 05, 2020 11:13 am 
Old School Grand Master

Joined: Mon Feb 11, 2008 9:42 am
Posts: 3569
66 triumph daytona wrote:
am I being over cautious?
a little, yes.
If they have a low spoke count 24f/28r for example, you are at more risk.
If they are higher count, I'd just "unbuild" them rather than cutting spokes. And inspect closely before rebuilding.
Low spoke count 29ers are also a bugger to build.
240s aren't exactly known for cracking, so I'd have no issues rebuilding with new rims.


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 Post subject: Re:
PostPosted: Sun Jan 05, 2020 12:55 pm 
Gold Trader
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Joined: Fri Jan 23, 2009 2:30 pm
Posts: 16436
Location: Surrey
Just take your time unbuilding them, release the tension slowly and evenly.

Rebuild with the same care and you should be fine. Follow the same lacing pattern.


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 Post subject: Re:
PostPosted: Sun Jan 05, 2020 6:24 pm 
Retro Guru

Joined: Sun Apr 25, 2010 10:07 pm
Posts: 2275
Nice one lads.


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 Post subject: Re: Wheelset rim change
PostPosted: Fri Jan 10, 2020 8:55 pm 
Retro Guru
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Joined: Sat Apr 23, 2016 8:46 pm
Posts: 313
Location: Chorley
What I usually do may be controversial but here goes. Slacken the spokes to make the wheel floppy. Go round the wheel and move the spokes consecutively to the new rim, one at a time. Tighten until the spoke threads are just disappearing. Tension to the best of your ability.
Reusing spokes in this way is notorious for causing them to break later. Only it doesn't. They are as tough as brand new wheels.
It is, of course, your choice.


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 Post subject: Re: Wheelset rim change
PostPosted: Fri Jan 10, 2020 11:40 pm 
Old School Grand Master

Joined: Mon Feb 11, 2008 9:42 am
Posts: 3569
Pretty sure the op's original wheels are 26", so you're going to need to stretch those spokes quite a bit.........


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 Post subject: Re: Wheelset rim change
PostPosted: Sat Jan 11, 2020 1:25 am 
Retro Guru

Joined: Sun Apr 25, 2010 10:07 pm
Posts: 2275
Good info though,nice one.


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 Post subject: Re: Wheelset rim change
PostPosted: Sat Jan 11, 2020 4:32 pm 
Retro Guru
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Joined: Sat Apr 23, 2016 8:46 pm
Posts: 313
Location: Chorley
mattr wrote:
Pretty sure the op's original wheels are 26", so you're going to need to stretch those spokes quite a bit.........

:oops: Good point, well made! I should have read it.


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