Author Topic: speedometer gear drive c11g  (Read 192 times)

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Offline edqueally

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speedometer gear drive c11g
« on: November 02, 2020, 09:12:30 pm »
Hi all,
I've just removed the speedo drive from the rear wheel of my c11G . It was a struggle to get it off because it seems to thread onto the axel bolt. Not sure of it was extremely tight and cut a thread onto itself or of it should be threaded. Does anyone know if the unit should normally just slide into the axel. If it is threaded then it will be difficult to assemble.

Online Owen

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Re: speedometer gear drive c11g
« Reply #1 on: November 02, 2020, 09:54:26 pm »
They should just slide on.  What tends to happen is when they are tightened up the speedometer drive casing gets compressed and swells into the spindle,  hence the tightness.
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11

Offline edqueally

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Re: speedometer gear drive c11g
« Reply #2 on: November 02, 2020, 09:57:31 pm »
Thanks, That's what I thought but the tread was cut in so we'll it looked like it should be there. 🙂

Online Owen

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Re: speedometer gear drive c11g
« Reply #3 on: November 02, 2020, 10:26:48 pm »
33/64" diameter hole for the speedometer drive as it's the same box as used from 1940 models onwards.
1940 C12 (350cc)
1945 C10 & C11
1953 C10 & C11

Online timsdad

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Re: speedometer gear drive c11g
« Reply #4 on: November 03, 2020, 08:03:12 am »
It's a common thing, Ed, so you just have to clean it up with a rat-tail file or whatever, so the wheel spindle slides through it nicely. I leave the nipping up of the axle until the cable is all connected up and routed properly so the speedo gear box has found its natural, unstressed position.

There's been times when I wished I could find my unstressed position!


Ray
Just a motorcyclist.

Offline edqueally

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Re: speedometer gear drive c11g
« Reply #5 on: November 03, 2020, 09:58:57 am »
Thanks,
Is there such a thing as an unstressed position   :) Ha ha