15-09-2020, 08:53 AM
It should be easy to cobble a drive, and see how wrong the speedo reading is.
Simple for my car, the speedo is above the end of the box (four speed, with the end casting inverted), so the cable is straight up and down and maybe 18" long, if that.
For the inner cable: one end soldered and filed square, and a brass or copper tube soldered on the other, then hammered over the appropriate square shape to form the female end.
The outer (as far as I can remember) wasn't attached to anything at the gearbox end, and spirals of stiff copper wire fixed the other end to the back of the speedo.
Which worked until I could save up and buy a "proper" replacement. Which still looks horribly new.
You could use little bits of sticky label on the glass of the face to re-calibrate, until you have worked out a final solution.
Simple for my car, the speedo is above the end of the box (four speed, with the end casting inverted), so the cable is straight up and down and maybe 18" long, if that.
For the inner cable: one end soldered and filed square, and a brass or copper tube soldered on the other, then hammered over the appropriate square shape to form the female end.
The outer (as far as I can remember) wasn't attached to anything at the gearbox end, and spirals of stiff copper wire fixed the other end to the back of the speedo.
Which worked until I could save up and buy a "proper" replacement. Which still looks horribly new.
You could use little bits of sticky label on the glass of the face to re-calibrate, until you have worked out a final solution.