You see that on a lot of cheap, early 2000s MTBs and BMXs.Top cone on cheap Mtn. bike made super duper thick!View attachment 109170 View attachment 109171
When running silly sized tires and gearing I have used the small ring bolted to a coaster sprocket to reach an acceptable ratio. The biggest coaster I find is 23 tooth...Tearing apart some junky bikes. Found this wierd 2 piece chainwheel on a Mexican built Roadmaster mtn. bike.
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The small chainwheel might be cool for a klunker build...
Pulled a one piece 52t crank from an old Sears exercise bike...
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