SOHC.co.uk Forums > CB350/400

Speedo inaccurate

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billywingnut:
My speedo reads  35mph when doing 30mph, I say this because I pass a camera in my car each day which I'm using for comparison. Can anybody suggest a company that can  calibrate it for me.

Nurse Julie:
Contact Kent400 on the forum here, Peter Horton, he will sort it for you.
 peterhortongauges@gmail.com

THUNDERDOWNUNDER:
I have a similar problem . My 400/4 has a speedo from 350/4 in mph . But down here in Oz we are kms . So I go past the friendly check your speed camera at 40 mph thinking I am doing 65 kms but the camera says 56 very confused!

Trigger:
Never had a accurate 40 year old clock yet. Even on a modern bike I past a speed indicator spot on 30mph on the clock and the roadside indicator showed 28mph  ;)

Moorey:
They are made to read high otherwise the manufacturer could be held libel in some accident or speeding cases . It's the manufacturers safety margin.  Tyre size and wear also effects speedo accuracy. GPS ones are more accurate but then can be out when it come to taking bends and hills into account and need a clear view of satellites .

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