Slight correction Amir...
It's not that manufacturers rarely - or most don't produce - 310mm...it's as you hinted at already - most shops don't order and stock 'em as most road wheels built today in the mass market are in the 286mm to 297mm range.
I import CN, and in the past have imported other brands. If I asked for 310mm threads or no threads - BAM! I get 'em.
I'm sitting on 10,000 of my most recent order of 12,000 14g right now.
I'm also sitting on 1000 13g/14g...
I'm also sitting on 1000 15g...
...each and every one - 310mm.
A person I import for is sitting on 20,000 power coat 14g in 8 different colors - 310mm.
Remember, most if not all manus for straight guage are pulling the wire off a spool - hammering the open end to form the mushroom - bending...and then cutting and threading the other end. The length is in large part trivial. You
want 180mm, they'll give 'em to you...but they'll charge you the same as a 310mm. All my manus to date have sold me by piece, not by length.
Here's the shocker...minimum order for any one specific spoke? Believe it or not...500.
...since you didn't mention whether this need is for a on-topic bike...am I off- topic?
Just had to say it..
=8-)
Robert Shackelford San Jose, CA USA
Quoting Amir Avitzur <walawalaoxenfree@gmail.com>:
> I collect bikes from the 50's,
> Mostly because of the awesome variety of parts that were available
> back then, and because of the spurt of inventiveness of that period.
>
> Take hubs for example, in the fifties you could get:
>
> - all steel hubs, three piece hubs, all aluminum hubs
> - fixed, free, double-fixed, fixed-free
> - small flange, medium flange, high flange, and grande flasque
> - flat, concave, or convex flanges
> - drilled, undrilled flange patterns
> - spoke hole with and without countersinks
> - 32/40 (UK), 36/36 (Fr), any spoke count (competition)
> - Metric, Imperial threading on axles ... with and without flats
> - 90mm through 140mm OLN
> - solid and hollow axles
> - sealed or free bearings
> - Grease ports on shell, on axle, or none
> - etc.
> - etc.
> - etc.
>
> I bring this up because, with so much variety, care must be taken when
> choosing the spokes, and building the wheels.
> Steel flanges were typically 2mm thick, aluminum flanges varied from 2
> 1/2 to 4mm (with and without countersink).
> The distance from the spoke hole to the end of the flange varied,
> significantly. Spoke hole diameter varied. Spoke pattern varied.
>
> When taking into consideration the variety of spokes, nipples, and
> rims, you can see that building wheels for these bikes is not simple.
>
> So when someone asks about 310 mm spokes, I sit up and listen.
> It is a common problem among collectors of British bikes from the 30's
> to the 60's.
> It remains a problem because very, very few shops stock 310mm spokes
> (despite what they might list on the net) and
> the major manufacturers rarely produce this size to stock.
>
> Correct me if I'm wrong. I also need some 308 & 310mm spokes.
>
>
> Amir Avitzur
> Ramat-Gan, Israel
> _______________________________________________
>
>
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