Originally Posted by
52telecaster
Notice how that 21 makes it dip? I'm sure I can't feel that but I know it's there!
Yes, I set up the spreadsheet with formulas so that I could easily sub out the chainrings and with the 20 tooth chainring the line is perfectly smooth. With 21 it comes awfully close though.
A really nice progression from 20 to 93 gear inches with an off the shelf freewheel or cluster and the trick here being the Triplizer to get that small front chainring.