[urq] Odometer gear (mass buy?)

[Ben Swann]

Bill,

I may be able to get an exact duplicate machined in brass with a coller for
a set-screw - I referenced the size as approximate in my email, not for
duplication, but just to help find the proper one.  The cost may seem high
for such a small part, but the nylon gears in are simply destined to fail
over time.  Almost all of the speedos with this mechanism I've encountered -
probably 20 or so have the same type of failure.  If the gear isn't split,
it is slipping on the shaft - those can be fixed temporarily with red
locktite.  I am certain a brass gear with a set screw is the long-term fix,
even though the nylon may last 100kmi.  The brass would only be about $20
more than the nylon and I feel worth it.  I encountered several good working
odometers from other VDO speedometers  while searching for a replacement -
they all had brass pinion gears.

So anyone who is interested in getting one of these, LMK now so I can
specify how many.  I would have to put up the additional funds initially, so
please be on your honor.  The gears would be about $40 a copy - less each
the  more  I have made, but consider I would be footing the funding up
front.

Ben
----- Original Message ----- 
From: "W. Bremer" <wbremer at maine.rr.com>
To: "Ben Swann" <benswann at comcast.net>
Sent: Thursday, January 08, 2004 6:19 AM
Subject: Re: [urq] Odometer gear


> Ben:
> I may be interested in a brass one--or even a heftier nylon one.  In my
urq,
> the toothed gear was slipping on the shaft, and I was able to repair it
(and
> I did not even set back the mileage!), but it's yet one more weak "link"
in
> the urqs.  However, I urge you to do your measurements in metric units,
not
> inches.  I'd be really surprised if VDO used inches in making the
originals,
> and if you were to use the "inches" system in duplicating them, I'd fear a
> fitment problem.  For example, I'd think the gear diameter might be 12 mm
or
> 13mm, but not 12.7 mm  (= 1/2"), and the shaft hole is probably not
2.778125
> mm (=7/64").
> Just an observation, if there is enough interest.
> Bill
> ----- Original Message ----- 
> From: "Ben Swann" <benswann at comcast.net>
> To: <urq at audifans.com>
> Cc: "Ben Swann" <benswann at comcast.net>
> Sent: Wednesday, January 07, 2004 10:11 PM
> Subject: [urq] Odometer gear
>
>
> '83 Ur quattro Odometer pinion gear in Speedometer gear is split - common
> failure for these VDOs and I've seen same on 4kq's, VW, etc.
>
> Before I have one (or more) fabricated, is there a convenient, inexpensive
> source for the pinion dirve gear which drives the Odometer.  This is of
> course located in the speedometer.  It is the one driven by a worm gear.
>
> I could not use one from a 4kq or coupe as they were different.  I located
> some gears in a hobbyshop, but not an exact fit - these are drive gears
for
> model trains.
>
> The Ur Quattro gear is 1/2" in diameter, 16 teeth, 7/64's shaft diameter.
>
> I may have some made up in brass if anyone is interested.  I can have them
> done for $40.   Less per copy if I get a batch of 10 or more made up.
>
> Speedo repair shop would have charged at least $80 - the cost of kit and
> labor.  He informed me VDO would not distribute them directly to a
customer
> because they needed to be installed by certified Speedometer repair shop.
> Poppycock!  What a racket!
>
> Dealer would only sell me the entire speedometer and said pre-'85 were
NLA.
>
> Ben
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