Large Diameter Sprocket for Bird Style minicycle?

[deezildennis]

I Have a Fox sundowner that I converted to a traditional sideshaft engine and I need to get ride of the smaller rear wheel sprocket and go to the size that the Bird minicycle, speedways and others used. It has 4 or 5" diam sprocket on it now

Where would a guy get the larger diameter sprocket?
It doesnt have to bolt up I Can work around that.

 

[jimh]

McMaster-Carr or Motion Industries would be the best, unless you have a belt/bearing supplier local. Tractor Supply even sells a few sizes. Some come with little hubs that will have to be cut away. The center holes usually need bored, and your own bolt pattern drilled.

 

[I90Roadking]

Fox, Coleman and Arctic Cat all used the same rear wheel on the 10" bikes. Both Coleman bikes had the small sprocket as well as the AC 72 Prowler but the AC Ram Rod used the larger diameter sprocket ( I believe 52T). min-bike-man would be the only one that I can think of that would carry new.