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Speedometer
Posted: Fri Feb 18, 2011 3:27 pm
by mike.perry
Could anyone tell me the serial no. and TPM of a speedo fitted to an 8cwt van with wide wheels and 165 sect tyres please?
Thanks
Re: Speedometer
Posted: Fri Feb 18, 2011 5:32 pm
by bmcecosse
Depends on the final drive ratio - and the aspect ratio of the tyres. Since most Minor speedos were ~ 8% fast as standard - you may find the standard speedo is actually more correct now with the wider tyres - if they are 70 aspect.
Re: Speedometer
Posted: Fri Feb 18, 2011 8:10 pm
by mike.perry
I was after the standard fitted speedo serial and TPM for an 8cwt van which would have 165x80 tyres and 4.55 diff. Presumably as the overall gearing is slightly higher than a 6cwt on 145 tyres it would have a different speedo.
I am trying to add some more info to the speedo table on the Series MM website.
I am also interested in any info on KPH speedos fitted to export Minors.
Re: Speedometer
Posted: Tue Feb 22, 2011 8:03 pm
by bmcecosse
I didn't think any Minors had 165 X80 X 14 tyres as standard? Did they ? I thought all production was on cross-ply tyres! Maybe they had 5.90 X14 tyres ? That's what I used on my Rally Minor.
Re: Speedometer
Posted: Tue Feb 22, 2011 10:39 pm
by mike.perry
As 8cwt vans came in towards the end of Minor production it is quite likely that they had 165 tyres to fit the wider rims
Re: Speedometer
Posted: Tue Feb 22, 2011 10:45 pm
by bmcecosse
Any evidence to support this ? Personally think it's HIGHLY unlikely!!