Speedometers.
Date: Wed, 04 Jan 95 05:13:03 -0500
From: William Caloccia (caloccia@sw.stratus.com)
------- Forwarded Message
Date: 03 Jan 95 22:23:23 EST
From: WILLIAM L. LEACOCK (75473.3572@compuserve.com)
Speedometers. Most of the cars made by the former British Leyland Group used
speedos manufactured by Smiths, sometimes badged as Jaeger, the part number
written round the dial; somewhere has 3 or 4 numbers at the end. this number
represents the number of revolutions per mile of the input , for example the
swb LR has the number 1500 (some have 1503) on a vehicle with 7.50 tyres this
number changes to 1400 because of the increased circumference of the tyres,
they make fewer revolutions per mile. Thus if you change the gearing an acurate
speedo can be found by looking round other vehicles for one with a better
number,or now you know how to tell the difference between an 88 and a 109
speedo. It is often possible to find speedos suitable for LR's fitted to other
cars, some with trip meters, some with higher speed ranges for the fast boys,
the chrome bezels can be interchanged for the posers, in addition some of the
auxiliary 3 in instruments can yield some good additional instrumentation. If
you are having trouble with a speedo it is surprising how many common parts
there are, there are only a few fixed ratio's, from memory I have seen 750,
1000, 1100, 1250, 1350, 1400 and 1500.