My, we are tetchy!
When rims are advertised for sale, that's what you get: a rim, with a
certain number of holes in it - usually 36, sometimes more, occasionally
less.
You need a hub suitable for the same number of spokes as the rim.
You then decide how you want the wheel building. Radial spokes just go
straight out from the centre to the rim, and without crossing each
other. That makes a light stiff wheel. Most wheels are "laced" with
the spokes crossing 1, 2 or 3 other spokes before reaching the rim.
That is, the spokes leave the hub at an angle, rather than going
straight out. This means slightly more weight, and slightly less
rigidity - but the lack of rigidity gives the wheel a different sort fo
strength - the old thing about reeds bending before the wind that snaps
the oak, and all that.
Then you can choose different types of spoke (plain gauge, butted,
aerodynamic, galvanised, chromed, etc.) and then there are other things
you can choose like eyelets etc.
It's all clever stuff, but for most of us, I guess a standard wheel,
well-built and tensioned is enough for most of the time.
--
Mikefule - Roland Hope School of Unicycling
Everyone should be fatuous for 15 minutes.
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