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 Post subject: Re:
PostPosted: Tue Jun 19, 2018 3:48 pm 
Old School Grand Master
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Joined: Sun Mar 14, 2010 2:33 am
Posts: 3593
Location: daaan saaaf
Quote:
Agreed, take Mavic's number and add around 3mm for the ERD.


I can't find any information directly on the Mavic website, only on some stockists and wheelbuilding web sites, and their ERD measurements range from 540mm, which is too small, to 545mm, which I reckon I could get away with. :?


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PostPosted: Tue Jun 19, 2018 4:44 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 9211
Location: New Forest, UK
Most come in (in my experience) about 543mm (XM517, XM317). The M217 I've done seemed a little smaller (more like 540) as the 317 rim I laced as a replacement left a little thread on the spoke end. M231 / MA40 are bigger at around 546-548.

If you end up with too much spoke thread, swapping the lacing to 2X instead shortens the spoke distance by around 4mm. I re-laced a wheel with an MA40 which had been M517 in this way.


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 Post subject: Re:
PostPosted: Wed Jun 20, 2018 1:18 pm 
Old School Grand Master
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Joined: Sun Mar 14, 2010 2:33 am
Posts: 3593
Location: daaan saaaf
Quote:
If you end up with too much spoke thread, swapping the lacing to 2X instead shortens the spoke distance by around 4mm.


Wouldn't going 3X to 2X lengthen the spokes?


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 Post subject: Re: Re:
PostPosted: Wed Jun 20, 2018 1:41 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader

Joined: Sat Jul 21, 2007 9:48 am
Posts: 7688
Location: Bristol
xerxes wrote:
Quote:
If you end up with too much spoke thread, swapping the lacing to 2X instead shortens the spoke distance by around 4mm.


Wouldn't going 3X to 2X lengthen the spokes?

radial spokes are shorter than 1x spokes are shorter than 2x spokes are shorter than 3x spokes

the fewer crosses, the shorter the path from the hub to the rim


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PostPosted: Wed Jun 20, 2018 1:46 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 9211
Location: New Forest, UK
Beat me to it! The more crosses the more the hub is rotated in the rim, hence needing a longer spoke.


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