Quote:
Originally Posted by alcyon
yes i have checked, you an get a 74 or 75T B4 spur, close or the same with the optima mid. byt the way the Mids Spur is 74T not 87T. i have to get off my lazy ass and start designing !
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ah, I think I see what Adam meant: you need a 87T 48dp B4 spur to match the original 74T 0.6M spur diameter
If you'd use a 74T 48pitch spur it would be way smaller and difficult to reach with an average sized pinion.