I don't know, what is the price difference? I have never had any luck
adjusting the Lucas Voltage Regulator, despite having access to a proper
manual and multi meter. I am not sure if it is because it is difficult or
because I have only tried to adjust when something is obviously wrong with
the charging system, and the regulator was toast when before I even touched
it (wishful thinking perhaps?). However, that may very well be the case,
because I could never get readings and adjustments to work as the testing
procedures indicated they should (and I seem to be able to test volts, amps
and ohms in other applications). I will add that I am electrically
challenged and without instructions my knowledge pretty much starts and ends
with positive, negative, complete circuit. I have always ended up replacing
with good used or new when I have had regulator problems.
Greg Lemon
Current: 68 TR250 with primitive solid state non adjustable external
regulator :)
Prior: TR4A, Healey 100, Sprites Aplenty, MGBs, with adjustable Lucas
regulators
--------------------------------------------------
From: <terryrs@comcast.net>
Sent: Thursday, November 5, 2015 4:38 PM
To: "list Triumph" <triumphs@autox.team.net>
Subject: [TR] TR3 Voltage Regulator
> Hi, everyone. Installed the LED headlights, so am taking opportunity to
> deinstall the alternator conversion.
>
> Put the rebuilt generator in, hooked up the wires to the voltage regulator
> correctly and drove to work the next day. Charging according to my
> voltmeter (replaced the old ammeter with one) at 15 amps. Right at spec.
>
> Next morning at start up, the ignition light went on and wouldn't go off.
> Voltmeter read 12 volts because of the battery power going in, but no
> charge from the generator.
>
> After checking all wires and grounds, tonight I took the cap off the
> voltage regulator, shorted the break switch, and the ignition light went
> on with the key off...what you would expect. Started the car and the
> voltmeter showed 12 volts that jumped to 13 at rev. I adjusted the
> regulator switch clockwise and bumped the charge to 15 at rev. Seems that
> the generator is producing power. Test shows that at startup without
> shorting the cutout switch, the cutout switch fails to engage. Now I know
> where the problem is.
>
> Easiest at this point to just replace the regulator. Cheap enough. But
> question.
>
> Moss indicates regulators don't come nicely adjusted, unless you spend
> extra to buy that feature. Is this really necessary?
>
> Terry Smith, '59 TR3A
> New Hampshire
>
>
> ** triumphs@autox.team.net **
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