[Rovernet] bouncing P5 speedo

[Gordon Reddy]

Hi Bill,
    I will try the cable first, it would be great if that does it. It might
not be the cable though as I just remembered it bounced up and stuck at 50
for 10 seconds when I started moving the other day. I'm trying to get the
correct MPH to KPH conversion as the differential was changed a few years
ago. Will keep you posted!
Cheers
Gord


On Sun, 21 Apr 2024 at 17:39, magnet--- via Rovernet <rovernet at rovernet.org>
wrote:

> Hi Gord,
>
> In my experience, re-lubricating the cable with Molyslip or graphite in
> heavy oil usually helps.  Disconnect the cable from the speedo head,
> pull out the core, apply lube and feed it back into the sheath.  I don't
> know if the P5 uses a right-angle gearbox at the speedo end like the P6,
> but if it does, lubricate this also.  But sometimes a new cable is the
> only answer.
>
> Another possibility if you have a Smiths (or British Jaeger) speedo: In
> these, the mileage counter is worked by a little pawl-and-ratchet
> arrangement.  If this gets stiff, it puts an increased load on the
> speedo drive while the pawl is trying to push the ratchet wheel around
> one notch (which moves the 1/10 mile wheel), and eases the load when the
> pawl is withdrawing.  This puts a much lower frequency flicker on the
> speedo needle, and not quite so kangaroo-like.  Again, lubrication is
> the remedy.
>
> Hope this helps.
>
> Cheers,
>
> -- Bill Daddis
>
> =====================
>
> On 21-Apr-2024 8:16 p.m., Gordon Reddy via Rovernet wrote:
> > Hey Rovermaniacs,
> >    My P5's speedo is acting like a kangaroo on amphetamines, how do I
> > approach this issue (and don't say quietly, with a large net).
> > Cheers,
> > Gord
> >
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