SOHC.co.uk Forums > CB500/550

Whine from Speedo or Rev counter

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beardylondon:
Hi All

So I have this noise which I think is coming from the speedo or rev counter.

I recorded it, this is decelerating from 50 to 5mph and riding slowly.

https://voca.ro/14p6IR1mIR2b

I guess the cable needs lubrication, any tips?

McCabe-Thiele (Ted):
Disconnect each one in turn - when the noise stops you have the source.

Might be a bit dangerous to use a listening stick whilst riding at 50 mph.

Tomb:
I had the same, it was the speedo cable, as I pulled up at a junction it stopped, if it was tacho cable it'd keep going as the engine was still turning. I cleaned and lubed up the cable and it was fine again for 12 months. Another thing I found is its cold weather that seems to get the dry cables vibrating, so this time of year.

beardylondon:
Thanks both, I'll give it some lube.

Nurse Julie:
Yep, that's the sound my speedo made on Millie the Mongrel 550. I can't remember which way round it is but if it's an OEM cable, don't lube it as the inside swells and causes more issues, or if that applies to the aftermarket cables 🤔🤔🤔🤔 Someone will remind me.... BryanJ 😆😆😆

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