Where to buy Type C sprocket?

[sanddrag]

Where can I buy a type C sprocket? (hubs both sides). I know Linn Gear makes them but I don't think they sell direct.
Thanks.

[Veselin Kolev]

Amazing.

I looked everywhere, and I found no other suppliers. If you really need them to be double hubbed… there are a few things you can do. And yes, they all involve making it yourself, as its cheaper than getting it custom ordered.

What I would do is buy the hubless sprocket, bore it out, machine a double sided hub, and weld it into the middle of the sprocket. Since everything is steel, its bound to be a very clean and strong weld. The other option (which I’m guessing Dr. Joe would like) is to EDM or CNC the sprocket. First get yourself the sprocket blank (basically the disc of the sprocket with no teeth, and the two hubs, all easy to machine) and then give it to a shop (if you don’t have a CNC) to cut the tooth pattern for you. I’ve cut sprockets on a CNC before, it is pretty easy once you get it programmed. And the sprocket quality is perfect, just like it were bought.

Hope that helps, even though I couldn’t find any suppliers.

[Justin Stiltner]

I dont have a source for double hub sprockets, however playing off what Veselin said, and it seems this would be more cost effective, buy a normal hubbed sprocket, then make another hub for the other side and weld it on using a shaft to center them up. If you have never cut the hub off most sprockets before they are only welded on the very outside of the hub, thus your sprocket would be pretty much what you would get from the factory. Just curious but what kind of application is this going into, as there may be another way of doing it without custom parts.

[Tristan Lall]

Martin makes them, but only in #40, #50, #60, #80, #100, #120 and #160. Tsubaki makes them, but again, only #40 and above, and for multi-strand chain only, unless #80 or larger are of any use (which they can't possibly be).

I assume that you want #25 or #35...so that's no help.

[sanddrag]

One of these days I'm going to start a business that makes/sells everything I've always wanted to buy but never could find for sale. LOL.

That's kind of crazy no one sells (small pitch) sprockets with hubs on both sides. When you think about it, there is usually empty space on the other side for chain clearance anyhow, so why not save some space on the normal (hub) side and chop off some hub and stick is on the other side, obtaining the same length through bore but taking up less shaft space.

[Dick Linn]

Just get two regular ones and weld them end-to-end. Use a snug fitting shaft to keep them aligned when welding. If you need, grind off one set of teeth. Or get a solid shaft collar and weld that onto the other side of the sprocket. If the sprocket and shaft collar are large enough, you could even drill and bolt or pin them together.