Sheldon Brown <
[email protected]> wrote in
news:[email protected]:
> Andy Dingley wrote:
>> There's an old nail in my workshop, hoping to turn into a bicycle.
>>
>> Front hubs are HB-RM50 (commonplace Exage from the early '90s), which you see around everywhere,
>> but I've never had one apart before. Tried to rebuild it (new cones), but the balls (10x3/16")
>> won't fit.
>>
>> Grubbing around in the parts washer tank turned up some skanky old balls that looked like 5/32"
>> instead. Is this one of those rare hubs that takes odd size balls ? How many ?
>
> I've never known a Shimano front hub to take anything other than 10
> 3/16" balls per side. I suspect you have incorrect cones if they don't fit.
>
>> Had to try three LBS yesterday before I found one that didn't think selling spare cones was
>> beneath them. 8-(
>
> Selling spare cones is an asolute nightmare for shops. There are way too many variations. You need
> the correct thread diameter and pitch, the right depth, the right curvature of the race, and the
> right outside diameter to fit the hub dustcaps.
>
> Add to this the fact that most of the hubs people want cones for are older models, no longer in
> production, often by defunct manufacturers...
>
> It can take an unreasonable amount of research time to locate a match, then the part may or may
> not be available.
>
> To top it off, you can't generally charge enough for a cone to cover your labor costs in
> identifying and locating it withoug looking like a pirate.
>
> This is an unfortunate situation, but you shouldn't blame the retailers for it.
>
> Sheldon "Can Of Worms" Brown +--------------------------------------------------------+
>| Education consists mainly in what we have unlearned. | --Mark Twain |
> +--------------------------------------------------------+ Harris Cyclery, West Newton,
> Massachusetts Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com Hard-to-find parts
> shipped Worldwide
http://captainbike.com http://sheldonbrown.com
Andy, next time let your mouse do the walking:
http://www.loosescrews.com/index.cgi?d=single&c=Hub&sc=Cones&tc=Shimano%
20Front&item_id=SH-2310400&id=150773110695
This is where I found mine. I also need to replace a cone in an older rear Exage hub (FH-HG50 drive-
side part #Y2200851). Loosescrews.com doesn't have them. Do you know where I could find this? Would
Shimano tech support hook me up? TIA,
- Boyd S.