Which single speed conversion kit?

Trying to fix up a bike for the gf with a mish mash of parts. Which single speed conversion kit should I get for this hub? I think it’s a uniglide hub. I’m pretty clueless when it comes to gears. Any help appreciated. Cheers.

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One with lots of thin spacers rather than 2 big ones (because that freehub body will be shorter than most modern 2 piece kits are designed for) and don’t worry about getting one with a lock ring but rather go to your lbs and ask them if they have a bottom bracket lock ring from s cheap/old cup and cone B.B. Thst should fit on those threads.

Great tip from M_V on the lock ring!

However, it is worth noting that Uniglide freehub bodies were designed with 9 identical splines, as opposed to the modern Hyperglide freehub bodies that have one thinner spline. These days, it is unlikely that you will find sprocket that will fit. You could always modify the sprocket with a bench grinder or scroll-saw, or you could replace the freehub body with a hyperglide one.

Hope that helps.

Oh yeah, forgot about that but I'm sure I've had some ss cogs where the slots were all uniform.

I guess it's possibly cheaper to machine 9 identical slots so some will be done this way?

Doubt they are gonna have that listed as a marketable feature though so no idea how you'd know which ones would fit.