bike wrench

792 readers

10 users here now

A place to ask bicycle repair questions, and for bike shop monkeys to share advanced non commercial wrenching resources (no YouTube self promotion). This is only for repair related topics.

[email protected]

founded 1 year ago

MODERATORS

j4k3

wheel hub question (self.bikewrench)

submitted 7 months ago* (last edited 7 months ago) by evasync to c/bikewrench

4 comments fedilink hide all child comments

Im building a single speed mini velo with 20inch bmx wheels.

Right now Im at the process on building its wheels and I was thinking on getting bmx hubs instead of 'normal size bike wheel hubs' because they are cheaper.

Are there any downsides on doing that? Is there a substantial difference between these two types or it is just a marketing thing?

you are viewing a single comment's thread
view the rest of the comments

[–] Paragone -1 points 7 months ago (1 children)

I've built only a few wheels, but am autistic, so geek out on getting it right.

You want several requirements met:

IF it is a drive-wheel, OR it is a hub/disc brake, THEN you want a big-enough hub spoke-circle, for the angular transmission-of-forces, and you cannot use radial-spoking on that wheel.
you want the bearings & races to be robust enough for YOUR purposes
you want enough distance between the hub's spoke-circles for any tilting-the-bike-while-upright-riding, or side-applied force from the hub's perspective, so the force has enough trigonometric geometry to not stretch/crack/bend/deform your spokes, or mangle your wheel.

I wish the thru-axles were normal in all sizes, and all standardized to a few diff diameters, front & back, with different axle-widths available, too.

Weight isn't a factor for any of the geometrics I identified, nor is cost.

Those are independent dimensions of consideration.

_ /\ _

[–] evasync 1 points 7 months ago

Any recommended reads on the subject?