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Thread: 40h rims?

  1. #1
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    40h rims?

    I have some Sturmy 3 speed wheels, I was thinking about replacing the rims so i didnt have to use the 26 1 3/8 tires which it uses. I counted the spokes on the current wheels and there were 40 spokes! is that normal or am i crazy??

    Furthermore there are no markings on the rims but if i used 26" rims i would probably be ok? I figure 700s would need a large fork or something.

  2. #2
    Stop reading my posts! unworthy1's Avatar
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    40 hole rear was very common on British bikes (matched to a 32-hole front) until they adopted the "Continental" mode of 36-36. If you want to use something other than the EA-3 rim (I assume you now have) and go to alloy, look for some 650A rims, they are the same diameter. 650B are just a bit smaller, and would probably fit, but you won't find them cheap.
    Sheldon has all the info in a compact form; http://www.sheldonbrown.com/tire-sizing.html

  3. #3
    aka: Mike J. treebound's Avatar
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    Peter White also has some info on 40 hole 26" rims down a ways on the page:

    http://www.peterwhitecycles.com/velocity.asp

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    30mi/day commuter
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    So I can just use a 650A or any 590mm tire? There are more 650 tires around than 26 1 3/8

    EDIT: nevermind those tires are all 650c
    Last edited by chico1st; 08-23-09 at 11:09 PM.

  5. #5
    Too many bikes bikemore's Avatar
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    These show up pretty readily.

    http://harriscyclery.net/itemdetails.cfm?ID=1350
    http://www.ebikestop.com/sun_cr_18_2...iso-RM8489.php
    http://ypsilanticycle.com/page.cfm?P...ils&sku=RM8489

    and biketiresdirect.com has 590 tires.

    I assume any of the above would too.

  6. #6
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    I have heard you can lace a 40h hub to a 32h/36h rim... can this be done safely?
    It sounds logical.

    EDIT: I found this, wheel mismatching seems to complex... i will not do it
    http://sheldonbrown.com/mismatch/
    Last edited by chico1st; 08-24-09 at 09:27 AM.

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