Bw35 Speedo cable thread??

M

mcmental

Member
I’ve got a BW35 with the right angle drive head and the cable has snapped, does anyone know the thread size please?
It’s a fine thread and approx 18mm diameter, it’s the one on the right in the photos, the cluster end is 5/8-18 (fitted into my Buick)

Thanks
Chris
 

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I was told by Ken Carter the English gentleman in Adelaide who serviced Rovers into the 90s that the fine thread down by the box was something called a "cycle thread>"

You could keep your outer cable and get the inner cable made by a speedo repair shop from your old one.
 
I have a theory about speedo cables. My Rover speedo needle always kicked and would never run smoothly. When doing 10 mph, it would read anywhere between 0 and 40. I am sure I am not the only one who has this issue. So I took the cable off and it all seemed fine. I took the inner out and cleaned and oiled it so that it turned really smoothly and easily, and refitted it. Still the same problem. So I bought a new cable and I noticed that although the cable turned freely, it was not exactly loose and took some effort to turn. I fitted it and the speedo is now fine. I think that the standard cables are greased with something quite thick as opposed to oiled and this dampens any kicking from the gearbox end so by the time it drives the speedo, the rotation is smooth. It is just a theory, but cleaning and oiling cables for me has never solved the problem. I have a TVR and a VW camper van which both have kicking speedos so when i get around to it, I am going to clean them and refit the inner with thick grease to see if my theory is right!!!
 
I was taught to lightly grease the inner cable, all apart from the top few inches, to stop the grease working it's way up into the head. I always cured windscreen wiper Speedos this way.
I've always assumed this was normal practice.
 
harveyp6 said:
I was taught to lightly grease the inner cable, all apart from the top few inches, to stop the grease working it's way up into the head. I always cured windscreen wiper Speedos this way.
I've always assumed this was normal practice.
Click to expand...
It probably is but no-one told me!!!
 
My experience is also that some damping of the cable helps.
When i have spliced the cable to indroduce a gearbox in order to correct the reading (due to V8 diff fitted) this has a considerable drag, that apparently made the speedo indication as smooth and stable as it can be, for years now.
 
Na, das ist mal eine super Info; das werde ich mal ausprobieren bei meinem Problem. Ich dachte, dass besonders leichter Lauf der Welle wichtig ist! Jetzt ist Winter, die Garage ist kalt; im Frühjahr ist das meine erste Arbeit!
 
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