diff change - speedo issue?

Post by **wibble_puppy** » Wed May 21, 2008 10:32 am

can we have a link to it, roni?

Post by **AndrewSkinner** » Wed May 21, 2008 12:02 pm

I think this is what Roni is refering to?
http://www.sterlingbritishmotoringsociety.org/

And this is the link to the actual spedo work:
http://www.sterlingbritishmotoringsocie ... Repair.pdf

Post by **alex_holden** » Wed May 21, 2008 12:32 pm

Thanks Andrew, that's an excellent article. The Minor speedo is pretty much the same construction apart from the missing trip odometer.

Post by **wibble_puppy** » Wed May 21, 2008 8:36 pm

Peetee wrote:The diff should have a marking on the crownwheel that will tell you the ratio, expressed as the number of teeth on each gear eg 9/38. Divide the big No by the small No and that gives you the ratio.

Hi again! Ok the markings on the crownwheel say 9/38, so the new diff ratio is 4.22, right? So my black-faced speedo should be a-ok?

Post by **alex_holden** » Wed May 21, 2008 8:40 pm

wibble_puppy wrote:Ok the markings on the crownwheel say 9/38, so the new diff ratio is 4.22, right? So my black-faced speedo should be a-ok?

Didn't you say the speedo is calibrated for a 4.55 diff? Just try it and see.

Post by **wibble_puppy** » Wed May 21, 2008 9:08 pm

ooh yes you are right. Alex thank you for being my brain - someone has to.

yup I'll try it out and see

thanks again

Post by **Roni** » Wed May 21, 2008 9:16 pm

I learnt my lesson on posting too late at night. Still getting over the flight back from the UK.
Here is the link -http://home.comcast.net/~rhodes/
The speedo article is the one I had seen but there are other ones there of interest too.

Post by **IslipMinor** » Fri May 23, 2008 12:34 pm

WP,

Is it the black faced speedo that has the 1504?

Post by **wibble_puppy** » Sat May 24, 2008 11:29 am

IslipMinor wrote:Is it the black faced speedo that has the 1504?

Yeah

It's the speedo out of my van - I only have the one (if you discount the one I bought for 5p at last year's autojumble because it had pretty sparkly glass on the front

)

Post by **twincamman** » Sat May 24, 2008 2:20 pm

MarkyB wrote:If you have or can borrow a GPS you can check how far out it is.
If you are lucky it might be more accurate than before as car speedometers seem to invariably read faster than you are actually going.

I read somewhere that on A35's you need the 4.22 diff to make the speedo accurate, even though the 4.55 is the correct ratio for the car. Perhaps it's the same for Minors.
As for pulling heavy loads, what's the difference between a fully laden van and a fully laden traveller?

Post by **bigginger** » Sat May 24, 2008 2:42 pm

The fully laden van can carry more weight
a