Spoke length rounding help

Discuss light weight issues concerning road bikes & parts.
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anthonylokrn
Posts: 1
Joined: Fri Mar 23, 2012 4:17 am

by anthonylokrn

So I'm building up a pair of 50mm carbon clinchers with a 3.5mm thick bed using 14mm Sapim aluminum nipples.

From what I've read, the Sapim nipples function just like a 12mm nipple so I don't need to adjust the spoke length for that.

-50mm carbon clincher 544 ERD
-14mm sapim aluminum nipple
-CX-Ray
-Front 20 spoke Radial and Rear 24 spoke 2x both sides.
-BikeHubStore SuperLight front (wide) and rear hub.

But here are the lengths that I am ending up with with the spoke calculator:
-Front: 258.1mm both sides
-Rear: 264.3mm NDS and 259.7mm DS.

What I'm worried about is spoke stretch.

Would I be okay with 258mm for the front (radial), 264mm NDS, and 260mm DS?

Many thanks!
Anthony

yakstone
Posts: 12
Joined: Sun Jan 23, 2011 2:30 pm

by yakstone

Your rounding will be fine as long as the measurements you supplied are accurate.

Enjoy the process.

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madcow
Shop Owner
Posts: 3741
Joined: Sun Feb 06, 2005 4:22 pm
Location: Tucson, Az.
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by madcow

Sapim spokes tend to be slightly shorter than their measured counterparts. So a 258 is closer to 257.5. You'll be fine with your rounding.

NONAME
Shop Owner
Posts: 48
Joined: Fri Sep 09, 2011 7:39 pm
Location: Poland
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by NONAME

Like this wheels ?? https://picasaweb.google.com/1104808309 ... 3931369170" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
, I made :
hubs - BHS, rims ( light 360 g ) Hong Fu 50 mm, spokes Mac 424, nipples MAC alu 14 mm
front - 260
rear 258 / 262
Spoke tension max 100 kgf front and DS.

I think You can get also 258 front and 260/264 rear

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