Technical & Reference Section > Tech and Restoration

Cog ID

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Mikku:
I was rummaging through a sale box in a Tokyo BMX shop the other day and found these 2 cogs in an unmarked bag. The only marking they have on them is the tooth size, and from what I can gather by looking at the splines and digging around online, they're either older Shimano DX cogs or Shimano-compatible ones. Being a bit of a newbie when it comes to cassette hubs, does anyone recognize 'em? Thanks in advance! :daumenhoch:

insectbones:
I'm sure early skyways had those type cogs too Mick  :daumenhoch:

Mikku:
Thanks Lee! Now I just need to work out if I can use them! ::)

monkian:
Nice little find Mick. They look like they could well fit Shimano cassette hubs. There were two different versions for BMX though and I think the cog fitting was different on them. Unfortunately I haven't got one here to check for sure. Suntour also made a BMX cassette hub. I guess they'd most likely be for a Japanese brand ;)

monkian:
Not sure if this helps Mick but here's some shots of the Shimano cassette hubs from the 81 JBM catalogue:

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