Paul, Ed & Rick,
I took the speedo out and left the 90 deg gear connected to the cable.
Went for a drive and the square tip went spinning at a regular pace.
No interrupts were noticed, even when I tried to put some friction on the
square tip with my fingers.
So the cable and 90 deg gear seems to be o.k.
The gear makes some noise when going up to speed - not much though.
Afterwards I conencted the speedo again, still outside the dash on the
passenger seat.
No rattle reappeared.
The speedo speed indicator needle now was much more steady, so I suppose the
cable was slightly bent before in the dash, causing friction and irregular
rotations.
But I still don't understand the rattle pace, which is much less than the
rotational speed of the output tip of the 90 deg gear.
Anyway next sunday the GT will be part in a charity rally tour
http://www.xs4all.nl/~i2mp/linkedinclassic/html/deelnemers.html, so that
will be a nice test.
The speedo cable now has been rerouted into the dash with a long curve, in
order to prevent any friction.
I behaved well for the 10 miles drive I went this evening.
Cheers,
Hans
----- Original Message -----
From: "Paul Hunt" <paul.hunt1@blueyonder.co.uk>
To: "Hans Duinhoven" <h.duinhoven@planet.nl>; <mgs@Autox.Team.Net>
Sent: Monday, April 11, 2011 9:47 AM
Subject: Re: [Mgs] Rattle in dash
> Ordinarily I'd expect the needle to show visible fluttering if it were in
> the cable or speedo input shaft. With the stop-start it could be the
> odometer gears 'creaking' when in a certain part of their revolution,
> which would show itself as being in time with certain digits being
> visible. Seeing if the noise is still there with the speedo disconnected
> would indicate whether it were the speedo or not, although it could also
> indicate a cable problem but just not doing it when the 'load' of the
> speedo is removed from it. 15 years could be a dry cable, one would hope
> one was past the 'infant mortality' that so often afflicts replacement
> parts these days after 10k.
>
> PaulH.
>
> ----- Original Message -----
>> The rattle starts to occur above 30 mph and then stays on till
>> standstill.
>> The frequency of the rattle is about 5 rattles on - pause - 5 rattles
>> down.
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