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Does anyone know the tpk for 200kmph cooper s speedo
https://www.ausmini.com/forums/viewtopic.php?f=2&t=88547		 Page 1 of 1
Author:  Lindsay_Palmer [ Sat Feb 07, 2015 8:12 am ]
Post subject:  Does anyone know the tpk for 200kmph cooper s speedo
Does anyone know the turns per kilometer for the 200 kmph cooper s speedo in the link below?

http://minisport.com.au/cooper-s-speedo-200km-smiths

I'm trying to work out which speedo drive gears I need.
Author:  drmini in aust [ Sat Feb 07, 2015 9:07 am ]
Post subject:  Re: Does anyone know the tpk for 200kmph cooper s speedo
It's made for a Cooper S with 3.444 diff, I run one in mine.
So, TPM would be 1280, therefore TPKm would be ~790.
You just need std early (pre-1980) speedo gears 6T/17T

I'm putting a 140KMH Moke one in mine instead, it is 800TPKm.
Reason I'm changing- the 200KMH one is reading slower as it gets older, however the odometer is still correct. :roll:
Author:  Lindsay_Palmer [ Sat Feb 07, 2015 12:19 pm ]
Post subject:  Re: Does anyone know the tpk for 200kmph cooper s speedo
drmini in aust wrote:
It's made for a Cooper S with 3.444 diff, I run one in mine.
So, TPM would be 1280, therefore TPKm would be ~790.
You just need std early (pre-1980) speedo gears 6T/17T

I'm putting a 140KMH Moke one in mine instead, it is 800TPKm.
Reason I'm changing- the 200KMH one is reading slower as it gets older, however the odometer is still correct. :roll:


Thanks, I'm running 12 inch wheels and 2.76 diff gears so I'll need to do some Maths.
Author:  jprior2912 [ Sat Feb 07, 2015 12:28 pm ]
Post subject:  Re: Does anyone know the tpk for 200kmph cooper s speedo
Hi there

Try using this calculator, it was very accurate when I used it.

http://www.guess-works.com/Tech/ratio.htm

regards
James
Author:  Lindsay_Palmer [ Sat Feb 07, 2015 12:32 pm ]
Post subject:  Re: Does anyone know the tpk for 200kmph cooper s speedo
jprior2912 wrote:
Hi there

Try using this calculator, it was very accurate when I used it.

http://www.guess-works.com/Tech/ratio.htm

regards
James



That's what I am using.

They now list the speedo I'm using.
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