Electrical systems, Instruments etc.
EXCHANGE ORIGINAL SPEEDOMETERS
Speedometer Calibration
Should you wish to have your speedometer calibrated to suit your car, proceed as follows:
Ensure the rear tyres are at the correct pressure. Disconnect the speedometer cable from the instrument and attach a paper clip to the end of the inner cable. Push the car forwards a little to take up any backlash. Mark the road vertically down from the centre of the rear wheel and push the car forward 6 turns of the speedometer cable. Again mark the road directly below the centre of the same rear wheel and measure the distance between these marks in metres. Then apply the following formula, where D is the measured distance in metres, and Tm is the final number of turns required for miles per hour instrument.
D x 1.09361 = Y.
Then: 10560/Y = Tm (Turns per mile)
Should your instrument be a KPH version, convert Tm to Tk (Turns per kilometre) by multiplying Tm by 0.6213712.
Provide us with this number and your speedometer can be calibrated to this figure. The part numbers below are used for our exchange speedometer units.
If you have an MPH speedometer and would like it to be refaced and converted to read KPH (or vice versa), we can do this too at extra cost. The cost of changing the instrument mechanically is covered in the overhaul cost, the refacing of the instrument attracts an additional cost. See RTR8585 below.
Axle ratio
The Axle ratio affect's the reading of your speedometer as the drive for the speedometer is taken off the back of the gearbox (or overdrive if fitted) which is before the axle in the transmission chain.
| Part No. | Description and Comments | Price | Add to Cart | |
|---|---|---|---|---|
 |
108192EX |
SPEEDOMETER MPH TR2-3B EXCHANGERevington TR information: Exchange domed glass TR2-3B Speedometer. We offer this service as an exchange for your old instrument, or we can refurbish your instrument if you prefer. Part number 108192 was in fact Triumph’s part number for a... READ MORE |
£330.06 Ex VAT @ 20% |
|
 |
108193EX |
SPEEDOMETER KPH TR2-3B EXCHANGERevington TR information: Exchange domed glass TR2-3B Speedometer. We offer this service as an exchange for your old instrument, or we can refurbish your instrument if you prefer. Part number 108193 was in fact Triumph’s part number for a... READ MORE |
£330.06 Ex VAT @ 20% |
|
|
208062EX |
EXCHANGE SPEEDO MPH TR4 DOMEDRevington TR information: Exchange domed glass TR4 Miles Per Hour (MPH) Speedometer. We offer this service as an exchange for your old instrument or we can refurbish your instrument if you prefer. Part number 208062 was in fact Triumph's... READ MORE |
£330.06 Ex VAT @ 20% |
|
|
208063EX |
EXCHANGE SPEEDO KPH TR4 DOMEDRevington TR information: Exchange domed glass TR4 Speedometer, Kilometres Per Hour (KPH) Speedometer. We offer this service as an exchange for your old instrument or we can refurbish your instrument if you prefer. Part number 208063 was in fact... READ MORE |
£330.06 Ex VAT @ 20% |
|
 |
209188EX |
EXCHANGE SPEEDO TR4-4A MPH FLAT glassRevington TR information: Exchange flat glass TR4-4A Miles Per Hour (MPH) Speedometer. We offer this service as an exchange for your old instrument or we can refurbish your instrument if you prefer. Part number 209188 was in fact... READ MORE |
£330.06 Ex VAT @ 20% |
|
|
209189EX |
EXCHANGE SPEEDO TR4-4A KPH flat glassRevington TR information: Exchange TR4-4A flat glass Kilometres Per Hour (KPH) Speedometer. We offer this service as an exchange for your old instrument or we can refurbish your instrument if you prefer. Part number 209189 was in fact Triumph's... READ MORE |
£330.06 Ex VAT @ 20% |
|
|
RTR8585
|
REPRINT SPEEDO or TACHO FACERevington TR information: This part number covers the cost to reprint the face of a TR2-6 large instrument, speedometer or tachometer. This includes the refacing element of changing a speedometer from Miles Per Hour (MPH) to Kilometres Per hour... READ MORE |
£186.54 Ex VAT @ 20% |
