19-08-2022, 04:27 PM
the number is turns per mile, and this may vary depending on tyre size, gearing etc...
As the gearing inside the unit is based on turns per mile, the trip meter and mileage recording will be wrong, not just the speed.
If the manky one works, you could remove the bezel and face from one of the other two and fit the insides of the 1040 speedo into the case, although it may be worth looking to see what the other two are from (Series 1 land rover and/or 30's minor possibly?), selling them on and looking out for a better 1040 TPM speedo.
As the gearing inside the unit is based on turns per mile, the trip meter and mileage recording will be wrong, not just the speed.
If the manky one works, you could remove the bezel and face from one of the other two and fit the insides of the 1040 speedo into the case, although it may be worth looking to see what the other two are from (Series 1 land rover and/or 30's minor possibly?), selling them on and looking out for a better 1040 TPM speedo.