I was wondering if anyone had tried out this method of making a bumbike flip/flop hub?

https://www.63xc.com/jasom/milldisc.htm

Basically the method involves using a SS disk brake hub (available for around 30$ these days), and then using a rotor as a template to mark holes on a cog, and then drilling out the holes on the cog so you can bolt the cog to the rotor mount. Then you've got a fixed/SS flip flop, for the cost of the hub and the cost of a cog. Sounds pretty neato to me, plus it would have an interesting look to it.

Anyone give this a try? Any recommendations for cheap but decent SS disk hubs?

peace,
sam

You could try it with this Nashbar SS Disc Hub?
https://www.nashbar.com/profile_morei...u=12033&brand=

Frankly I would hardly call it a bumbike setup. It's something that until recently you couldn't do at all (bolt on cogs...now at least you can buy a Level hub) and something for which there was a real need (lots of dirt fixed riders complain about stripping their hubs). It's not like the cog's gonna come off, unlike the true bum setup, the Brotherhood of the Loctite.

I'd do it if I were looking to build up a fixed offroader.

Well, I suppose its 'bumbike' in the sense that its not the intended use of the parts. You are taking something you already have, drilling some holes in it, and bolting the sucker together. Thread-on freewheel hubs are becoming more and more rare, and disc hubs (even disk freehubs) are becoming more common. This seems like the 'bumbike' of the future to me. I'm already seeing department store disk hubs and disk brake bikes at the thrift shops, and we'll just see more and more with time. Seems like a cheap way to go fixed/free, especially if you build up your own wheels.

That nashbar hub seems like it would be a good option, cheap and suitable!

peace,
sam

use a Chris King disk hub, be better than phil woods

ooo, just found this..
https://www.fixedgeargallery.com/2005...inPaquette.htm
he did what ur talking about with what i'm talking about!

I don't know, I've seen a lot come out over the last couple of years. But, to answer your original question, a couple of locals are using the disc brake mod here. They are using the high zoot Ti Boone cog made just for this purpose.

Picture of the Boone for those who are interested.
Link

Anyone have a template for the 6 hole ISO pattern? Once you have a drilled it would be easy to make more and I have a drawer of old cassettes.

that boone cog is beautifully machined.

the ramped teeth on each cog from the cassette might be a problem. i think a splined bmx cog would be a better canidate since they're non-ramped and come in .125" thickness.

Yeah, they would be better but the other ones would work for templates or to test. I also have an old busted freehub spline to line them up.

Do you have info on where to get these Boone cogs?

Actually I found this...
https://members.aol.com/bboone5619/boonetech.html

Alright heres the real one
https://www.boonerings.com/about.htm

i found a little ditty about them on the dirtrag forum. to quote from a post:

I would email Brett Brown (browntechnologies@mindspring.com), the dude who makes the Boone titanium bike stuff. Tell him you saw it in Dirt Rag.

Here's his site for bicycle parts.
https://www.booneti.com/cr/cr.html