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Messages - Geoff

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British Bikes / Re: Speedometer
« on: April 09, 2012, 07:30:22 PM »
Quote from: Rex on April 09, 2012, 07:20:18 PM
Doesn't really matter whether it works or not on those old bikes. Being both cheaply made and 40+ years old they soon died a death, as will the new one, should you replace it.
Not that Smiths were any worse than any other maker, and it wasn't until Nippon Denso came along that a working speedo was considered a possibility on anythinmg more than a couple of years old.

My kph speedo has worked well for the last 8 years ...

Geoff

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British Bikes / Re: Speedometer
« on: April 09, 2012, 07:28:26 PM »
Quote from: L.A.B. on April 09, 2012, 11:53:21 AM
Yes, it should only be necessary to change the speedo.

However it is wise to check the speedo drive gearbox ratio. If the ratio is 2:1 (2 cable turns to 1 wheel turn) then you'd need a MPH speedo marked "1600", if it's 1.25:1 then you need a MPH "1000" speedo. 

 

On inspection the kph face is marked "1000" ...does that indicate that a mph speedo with 1000 on the face is correct ?

Geoff

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British Bikes / Re: Speedometer
« on: April 09, 2012, 01:10:34 PM »
L.A.B

Thank you for a swift & erudite reply !

Geoff

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British Bikes / Speedometer
« on: April 09, 2012, 11:16:55 AM »
Hello from a newbie.

My '69 BSA A65 Thunderbolt has a kph speedo which I would like to change to a normal UK mph type . Is it as easy as just changing the instrument over or do I need to change a drive gear somewhere too ?

TIA

Geoff

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