Speedo ID

[whitehillbilly64]

Hi.
Is there any info on ID the types of speedo, to suit wheel size.
I just read My Feb edition of Classis LR, I paid a 12 month subscription, as a Chrissy pressy to my self. [biggrin]
An a article gave 3 different No's for tyre size, but none match mine. I will be running 7.50/16 AT's on my SWB S3.
I want to use the speedo with 26,000 on the clock, was part of my STD sized motor and gearbox. will have to dig it out, and look at it.
Thanks
whitehillbilly

[JDNSW]

The speedos have a number on the face (in very small figures at the bottom, the number furthest right) that gives the number of revolutions per unit of measurement. On my 109, with 7.50 tyres I have the correct metric speedo and the number is 860. For miles, it would be 1.62 times that.

There are a lot of speedos. There is the difference for tyre size, as far as I am aware, only two, set for 6.00 and 7.50 tyres, then there is km/miles, trip mileage or not, warning lights in the speedo or not, six cylinder or four cylinder (six goes to a higher speed), and the attachment of the cable is screw-on for Series 1,2,2a, and clip on for Series 3, and finally the different diff ratio on the V8 gives another set of speedos.

And all that without considering the smaller 80" speedo or the FC speedos (larger tyres).

[gromit]

A thread from a few years ago might answer your question.

The Series Speedo and Tyre Sizes (https://www.aulro.com/afvb/series-land-rovers/156644-series-speedo-tyre-sizes.html)


Colin

[whitehillbilly64]

My S3,s then from an unknown Series, maybe 3.
SNT 6209/15S. 880
SNT 6209/93S. 940
Any Ideas please.

whitehillbilly

[JDNSW]

You can identify one as S3 if it has a clip on cable not a screw on. The difference between the revolutions for the two is consistent with the top one being for a lwb with 7.50 tyres and the bottom one being for a swb with 6.50 tyres.

[whitehillbilly64]

Thanks John.
Both clip on speedo cable.
Top one was fitted to Gilbert (SWB) Is in very good condition, and all works on both gauges, now shod in 7.50x16's At's
So happy to hear. [thumbsupbig]

Gilbert had 31x10.5's on Sunraisiers fitted. Maybe some cheap Chinese muddies on these to Play.
So what gives away, LWB, 7.50/16 over SWB 6.50/16 or is that just a case of Im to young as a LR owner to Know !!!! And you will tell me in 40 yrs. [bighmmm]
Thanks again

whitehillbilly

[JDNSW]

The original Landrover came with 6.00 x 16 tyres. When the 107 was introduced in 1953, it was fitted as standard with 7.00x16 to carry the heavier load. With the Series 2, the lwb, by then 109, went to 7.50x16, which was by then a more popular tyre, and had often been fitted to them after market. This remained the standard lwb tyre when the 110 was introduced and remained so into the 1990s.

There had always been a tendency for some users to fit larger tyres to the swb to increase ground clearance and to cheaply provide higher effective gearing. By the time the Series 2 was introduced in 1958, this became a factory option to fit the same tyres as the lwb. This option came with the wider (and stronger and heavier) lwb wheels and the lwb speedo, and despite the increase of the standard tyres for the swb to 6.50x16, by the end of S3 production, 7.50 tyres were fitted to the majority of swb Landrovers from the factory, almost certainly 100% in Australia.

(North American Specification Series Landrovers came with 15" wheels and larger section tyres to give the same overall diameter. Similar size tyres but with different wheels were fitted to the Australian "Game", a tarted up, limited production swb station wagon produced near the end of S3 production.)

[whitehillbilly64]

Very interesting.
Thank you.

whitehillbilly