SOHC.co.uk Forums > CB350/400

Cb400f speedometer size

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Yad:
Hi
19inch wheel,do you no what ratio I will need?
Thanks

Oddjob:
Use one off a 500-4, that had a 19” front wheel

exvalvesetdabbler:
I thought all of the Jap bikes from the 70s had the same ratio on the speedos , 2240 rpm on the speedo input shaft  for 60 mph.  Any gearing for wheel size is done at the drive housing on the axle.

Tacho's are a little different between bikes.

Honda 7:1   , newer VFR/CBR 4:1
Yamaha 5:1
Kawasakii  5:1
 

Regards
Dave

McCabe-Thiele (Ted):
Smiths speedometer clocks had the Wey speed printed on the dial face back in the 1960's.

Athame57:

--- Quote from: McCabe-Thiele (Ted) on May 20, 2025, 06:38:49 AM ---Smiths speedometer clocks had the Wey speed printed on the dial face back in the 1960's.

--- End quote ---
I've been trying to figure out what Wey speed is over my morning coffee. ;)  Mixed results on google. ::)

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