[TR] : Wiper Motor Question

[spamiam at comcast.net]

Guy,  I agree with Randall, your power supply is probably totally 
inadequate.  Even a small 12v gellcell battery is not really up to the task. 
A lawnmower battery (or larger) would be good.  Use an inline fuse near the 
negative terminal of the battery for safety too.  5 amps ought to be OK.

I bet that once you get sufficient current delivery, then you will see the 
motor working properly.

-Tony



-----Original Message----- 
Message: 3
Date: Mon, 10 Jan 2011 19:05:51 -0600
From: "G.D. Huggins" <guy at genfiniti.com>
Subject: [TR] Wiper Motor Question
To: RedRiverTriumph at yahoogroups.com, triumphs at autox.team.net
Message-ID: <D40F992C-316B-498A-A6AD-BD8AA889DA15 at genfiniti.com>
Content-Type: text/plain; charset=us-ascii

All,

I have recently rebuilt the Lucas DR3A wiper motor from the TR4A.
I am attempting to bench test and just cannot seem to get it working.
I am drawing heavily on this 
(http://www.mgaguru.com/mgtech/electric/et217.htm) web site for information.

I am using a AC to DC converter, which puts out 15 v, as the power source on 
terminal 2.
I hook up the positive (+) to terminal 2, the negative  (-) to the "E" 
terminal.
This should create an attraction between the positively charged parts 
(terminals, field coil, armature, brushes, commutator) and the negatively 
charged housing.
When I add the third wire from terminal 1 to the "E", taking it to ground, 
nothing happens.

Any ideas?  I suspect I am shorting somewhere, or the power source isn't 
strong enough to make it run.




Cheers,

Guy D. Huggins
1965 Triumph TR4A
CTC 63569LO