Carl,
The gears I'm looking for are from a Jaeger (Smiths) SN6104/06. They are
made of a fiber material and have 25 teeth with a gear OD of 0.426
The shaft has a od of 0.197 and an overall length of 0.850 +/- from the
outside of the gear to the tip of the eccentric shaft. I can take more
measurements if you need them.
The MGB speedo I have has a Smiths Number SN 6144/00 and has plastic
gears with a different nuber of teeth. Would gladly trade a good Smith's
speedo for a good Jaeger SN 6104-006. Or even three gears!
Evidently the grease that was used on these in the factory, turned to
cement from age and lack of use. Then the speedo cable breaks the teeth
off the gear. I have cleaned the gunk out and lubricated the needle
shaft using watch oil. The gear shaft and other items have been lubed
with white lithium grease.
I would strongly recommend anyone out there restoring a vehicle that has
sat for a long time (many years) to look into their speedo before
causing any damage.
Chuck
Musson, Carl wrote:
>
> What would distinguish these gears from those in other Smiths Speedo's.
> Also, do you have specific part numbers of the speedo?
>
> -----Original Message-----
> From: Chuck Schaefer [SMTP:crschaef@mc.net]
> Sent: Friday, December 05, 1997 4:34 PM
> To: british-cars@autox.team.net; mgs@autox.team.net
> Subject: speedometer parts
>
> I am looking for a source of internal parts for an MGA
> speedometer. The
> small gear which is driven from the cable gear and drives a pawl
> lever
> to advance the odometer / trip meter.
>
> I have contacted Several gauge restorers and they will not sell
> the
> gears, but want $100.00 to repair the gauge. That will cover
> repair for
> anything and everything wrong with a bad speedometer. I am in
> need of
> three gears for two speedometers. I am willing to pay a fair
> market
> price for these. But knowing that there is nothing else wrong
> with the
> speedometer, and I can do the work myself, I think that $100 is
> too much
> to spend, especially on the one that has one good gear in it.
>
> I have cleaned and lubricated the gauges but need to find these
> gears.
>
> Any ideas?
>
> Chuck Schaefer
> 1600 MGA Coupe
> 1500 MGA Raodster (under restoration)
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