Replaced bearings in this bad boy recently expecting to build it into a wheel at some point, I thought it was safe to assume 135mm spacing considering the QR caps.. turns out it’s more like 157(ish)
What kind of bike would have taken such a spacing?
by Oldbikesarecool
11 Comments
Hub spacing is the distance between the knurled dropout nuts, not the total axle length. Also, you should replace that free hub. It’s very chewed up.
You should be measuring from the shelf, not the end of the qr endcaps. Thats a 135.
You measure the distance of the face of the axle where it touches the dropout, not the whole length. (Image from Sheldon Brown’s website)
https://preview.redd.it/b0qiurrldghf1.jpeg?width=800&format=pjpg&auto=webp&s=213623cca2c5ac0476697f0b2ecc1ab9a14f1944
Confusingly you measure from locknut to locknut not the actual width of the axle.
[QR spacing is measured at the outside faces of the locknuts, not the ends of the axle](https://www.sheldonbrown.com/frame-spacing.html)
My guess is one of the end caps has thru-axle, and the other has QR end cap that could explain the weird axle spacing.
Worst hub ever
Don’t even bother
That’s not how you measure hubs, and, even if it was, that doesn’t measure 157mm. A term that you’ll often hear is O.L.D, or Over Lock-nut Dimension. It’s an old term , and doesn’t necessarily always apply as a lot of hubs don’t have lock-nuts anymore, but all you need to remember when thinking about or measuring hub width is the faces on the hub that sit against the inside face of the dropouts when the wheel is installed in the frame.
Someone needs to go on a vernier training course.
You measured incorrectly. QR hubs are 135mm
A little knowledge is a dangerous thing.