Originally Posted by a.graham52
pirate cycle has some for $50 i think. i saw one on there today for "walmart" bikes
Yes, they're 50. The sprocket designed to bolt up to it costs 37 more. I guess any sprocket can be drilled to work with the adapter. I noticed the center hole in their sprocket was much larger than in the chinese ones, so I wouldn't have to enlarge it. I have no access to an end mill anymore, so I went for it.
The cost might make sense when you think how easy it would be to remove/reinstall the sprocket from now on. 3 bolts.
If the new 40 tooth I bought turns out to be too tall, I will drill the 44 and enlarge the hole with a hand drill and abrasive stone or something.