Vitesse box in p6 speedo inaccurate

[Clyde Archibald]

Looking for a solution for vittese box in p6.
Speedo reading 30, I'm doing more like 45 mph..
Is there a quick change of drive size or do I need to get speedo out gor modifications?
Cheers
Chris

[stevieturbo]

Is it cable or electronic ?

I think there are drivewheels with different numbers of gear pinion teeth ?

or if electric, which is easier, you can buy electronic correction boxes. Although it says not available...I'm sure there are others out there

https://www.jaycar.com.au/speedo-correc ... s/p/AA0376?

Maybe electric only appeared on the SD1 I think ? Can't remember if it was electric or cable

Or give https://www.speedycables.com/ a shout

[Clyde Archibald]

Hi
I've got mechanical drive, probably quite tricky to go to electronic system.
Thanks for the response and links.
Rgds
Chris

[stevieturbo]

https://www.mgexp.com/forum/mgb-and-gt- ... e.4784920/

Speak to speedycables, I'm sure they can do something

[Clyde Archibald]

Thanks man. Interesting about the 3d printed gearbox

[stevieturbo]

Thanks man. Interesting about the 3d printed gearbox

Similar was available commercially a lot of years back for the mechanical speedo jap imports, to convert their kph speedo's to read mph.

DIY 3d printing....cool new version if you can do it.

[ChrisJC]

Speedy cables and Speedograph Richfield will do a 'correction gearbox' to go in the speedo cable.
Speedy cables probably your best bet.

Chris.

[Clyde Archibald]

Thanks will get round to it....thats the finishing touches......l have bigger items to snag first
Cheers Chris