ninjette.org - View Single Post - Sprocket change to 15/42....need a new chain?

DannoXYZ · August 21st, 2020, 11:20 AM

Odd. Are you talking about this calculator? It shows speedo-errors stays at same 8% with old gearing vs. new.

14/45t @ 8260rpm = 65mph, 70mph on speedo
15/44t @ 7540rpm = 65mph, 70mph on speedo

I put 16th in front on my bike (need to use new-gen sprocket cover). Really mellows out freeway driving. Do have to downshift 1 or 2-gears for passing sometimes, though.

16/45t @ 7230rpm = 65mph, 70mph on speedo

August 21st, 2020, 11:20 AM	#11
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Odd. Are you talking about this calculator? It shows speedo-errors stays at same 8% with old gearing vs. new. 14/45t @ 8260rpm = 65mph, 70mph on speedo 15/44t @ 7540rpm = 65mph, 70mph on speedo I put 16th in front on my bike (need to use new-gen sprocket cover). Really mellows out freeway driving. Do have to downshift 1 or 2-gears for passing sometimes, though. 16/45t @ 7230rpm = 65mph, 70mph on speedo Last futzed with by DannoXYZ; August 22nd, 2020 at 02:20 AM.