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DannoXYZ · March 19th, 2018, 02:14 PM

Problem comes from mechanical nature of speedo. You've got gears in hub that spins the speedo-cable. You've got gears in the speedo that the cable connects to. There's a finite integer number of teeth possible with gears. So you can have a 30x20t combination or a 20x15t (examples, not really tooth-count). If a 25x10 gear-combo fits into hub and reads just under actual speed. The next combo up 25x11t may read just over actual speed. Can't get a 25x11.5t gear-combo to mesh. So... what is one to do? Tell people they're going too fast or tell them they're going too slow?

March 19th, 2018, 02:14 PM	#5
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	Problem comes from mechanical nature of speedo. You've got gears in hub that spins the speedo-cable. You've got gears in the speedo that the cable connects to. There's a finite integer number of teeth possible with gears. So you can have a 30x20t combination or a 20x15t (examples, not really tooth-count). If a 25x10 gear-combo fits into hub and reads just under actual speed. The next combo up 25x11t may read just over actual speed. Can't get a 25x11.5t gear-combo to mesh. So... what is one to do? Tell people they're going too fast or tell them they're going too slow?