Sprockets coaster brake + big sprocket...???

"seat-stay clearance" is about the only good mechanical reason for the roller/tensioner, in my opinion.
 
yeah, so i brought the sprockete to the machine shop i work at, and enlarged the hole a little bit, and it works great...

-pianoman
 
If I opened up hole on sprocket to 60 mm will that be enough to fit over coaster brake ?
Going to shop tomorrow, hopefully guy can machine it out for me
 
hole doesn't need to be round or centered, just take your dust cap with you to be sure the hole is big enough to clear it - if hole isn't centered, just be sure it doesn't scrape the cap on the short side - I usually just open it up with a round file when I do one
 
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