I have a 61 super rocket with a 59 super rocket engine ,the rev counter drive is at the bottom by pressure relief valve ,I bought a new drive cable from Supreme an a tacho drive from Lyford classics , the cable don't fit the adapter ! does anyone have the part numbers for the cable and tacho drive ?
Hi,
The 1954 to 1960 SR rev counter cable, 38" cable is part number 65-9172, the 1961 to 1962 is 34.5".
The drive housing is 42-0195 with a 42-0196 shaft.
Best wishes...
Sounds like you have a cable for a rev counter driven from the magneto. Standard for up to 1959 season.
You need a cable for rev counter driven from the oil pump. Standard for 1960 season on.
Most dealers should be able to provide one.
The mag drive setup needs a cable with a spade adaptor to fit the gearbox.
The oil pump drive takes a simple squared end on the cable inner.
The threads are different at each end - the hex connector is 1/2 inch x 26 tpi cycle and the knurled instrument end, if it is a Smiths chronometric, is a 12mm x 1mm pitch metric.
Many thanks ,that helps a lot ,the owners club confirmed the engine as a 59 super rocket !thanks again .