David, thanks for the reply.
Definitely an interesting solution to the problem for the wires on the
column!
I don't have a problem with the spring loaded plunger. Actually I
probably have a half dozen of those things laying around.
On the 63 Spitfire that I used to have I vaguely remember a ground
wire that went from the rack to the frame but then the Spitfire had
rubber isolation mounts. The TR4 uses solid aluminum blocks so I
don't think I need to ground the rack.
The Moss TR6 catalog doesn't show a ground wire from the lower
steering knuckle to the rack itself so I'm assuming there is nothing
there.
One thing I forgot to try was grounding the shaft where it comes out
of the firewall to ensure that my problem isn't in the slip ring area.
Brad
On Wed, Aug 18, 2010 at 4:21 AM, David Brister <david.brister@wanadoo.fr>
wrote:
> I posted thi s a few years ago but here it is again in case it's any help
to
> anyone.
> FWIW my horn works as well as ever.
>
> "I put up with this problem for a few years but after adopting the
following
> rather inelegant solution about 20 years ago the horns have worked
perfectly
> ever since.
> First I made a new plunger thingy. Took the carbon rod from a dry battery
> which fitted well into the barrel of an old pen of correct diameter. Took
a
> very light compression spring, same one from the old ballpoint, I think.
Cut
> two pieces 10 mm or so from the carbon rod and glued them to the spring.
> They fitted into a piece of the ballpoint barrel cut to the appropriate
> length.
> Voila! A new plunger thingy.
> Next I ground the teeth off an old hacksaw blade and bolted a suitable
> length of it to the master cylinders bracket so that the flat bore down on
> the upper part of the steering column.
> Encore Voila! A perfect earth. No need to fiddle with bits of wire over the
> UJ's or steering rack."
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