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rebuilding Shimano R500 rear wheel

 
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kevb




Joined: 11 Aug 2010
Posts: 737

PostPosted: Sat Apr 08, 2017 12:58 pm    Post subject: rebuilding Shimano R500 rear wheel Reply with quote

Couple of spokes broke on this rear wheel, so I decided to respoke the whole thing, I've done a couple of front wheels in the past with no probelms but can't sort this rear out!

I have the correct length spokes, but I can't get the rim to pull over to the cassette side; it just sits in the middle of the hub. This is with all the drive side spokes tight and the non-driveside loose. any suggestions?
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lastoutofthepool




Joined: 03 Apr 2007
Posts: 36

PostPosted: Sun Apr 09, 2017 8:36 am    Post subject: Reply with quote

Carefully check lacing pattern.

If this is correct double check spoke lengths

I know you said lengths are correct but
1 or 2mm out can make a big difference.

Sounds like non drive side may be too long?
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kevb




Joined: 11 Aug 2010
Posts: 737

PostPosted: Sun Apr 09, 2017 12:10 pm    Post subject: Reply with quote

It's odd, but both sides are the same length, I checked the shimano tech document. I was expecting a difference.
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lastoutofthepool




Joined: 03 Apr 2007
Posts: 36

PostPosted: Sun Apr 09, 2017 1:27 pm    Post subject: Reply with quote

Hi,

Happen to have one in shed.

Non drive side measures 2mm longer than drive side.
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kevb




Joined: 11 Aug 2010
Posts: 737

PostPosted: Mon Apr 10, 2017 9:35 am    Post subject: Reply with quote

lastoutofthepool wrote:
Hi,

Happen to have one in shed.

Non drive side measures 2mm longer than drive side.


I've remeasured, and all the ones I took out were the same length.

I've read that these can done by lacing and tightening the drive side first, getting the wheel correctly round, then pulling over with the non-drive side. I'll give it another go and see how I get on.
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kevb




Joined: 11 Aug 2010
Posts: 737

PostPosted: Tue Apr 11, 2017 5:35 pm    Post subject: Reply with quote

Yay, sorted it! followed the advice here; http://www.wheelfanatyk.com/blog/wheel-building-tip-no-6-build-rears-from-right-to-left/
and worked perfectly. Don't have a truing stand, so did it on the bike and it runs nice and central to the chain stays and brakes; nice and round too!
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