Topica Loopframe_Guzzi Archive


Subject: RE: Eldo REgulator Performance

Author: Gary Cheek

Date: Sep 3, 2001, 9:21 AM

Post ID: 1708098471


After the generator is intalled and all leads are connected,the
generator must be polarized before starting the engine. Since the system
used on the loop frame Guzzi is INTERNALLY grounded this is achieved by
discnnecting the field lead from the regulator and MOMENTARILY touching
it to the "BAT" terminal on the regulator.

This helps establish residual magnetism in the generator to allow for
self excitation when the system is started after shut down. The
magnetism must have the proper North /South polarity for proper
function.

It sound like you have OUTPUT to spare . Most likely the regulator is
to blame . This is often caused by the push ,pull and poke trouble
shooting method often recomended. The settings in these old mechanical
regulators is very sensitive . It doesn't take much to disturb the
setting and put your charging system in limbo.

Yes, solid state regulators can and have been applied to DC generator
ststems. Many are offered for Harley Davidson farm implements.
I haven't needed to try one but they could probably be adapted to Guzzi
motorcycles as well. I still have a lot of faith in a properly
maintained DC generator/mechanical regulator system.

Keep us posted on your progress'

Gary Cheek


Derek Hamlet wrote:
 Tom,
I'm sharing this with the whole list since I'm assuming that other
Ambo/Eldo owners may be equally bemused by the chargins system.
A couple of more questions. The various internet sites about
regulators,
generators alternators etc., seem to spend numerous bytes going on about
polarizing the system. I always thought that when you put in a new
reulator, yo simply unbolter the old one slapped in the new one, turned
the
key, made sure it was both charging and cutting out then drove off into
the
sunset. How important is this polrizing.
My other question involves solid state regulators. Is this possible
with a
generator. The Bosch solid state regulators only seem to have D+, DF and
D-
pins. The other connections seem to be involved with starter relays and
stators and rectifiers (diode boards). Am I correct that one cannot do
a
solid state regulator on a generator system.
And finally, do I need to worry about the polarizatin on my generator?
I
did polarize the new (now non regulating) regulator as per the
instructions
inthe box.
At 03:12 AM 9/3/01 +0000, you wrote:
 OK Derek, more charging system advice and analysis is on its way.
Derek
"continuing to wonder how those clever people get the smoke into the
wires"



Gary Cheek

1971 Ambassador (I think it's sold)
1972 Eldorado Police
1974 Eldorado 4LS/Amal carb civilian

Entire thread: