Subject: RE: Eldo REgulator Performance
Author: Tom Bowes
Date: Sep 2, 2001, 8:12 PM
Post ID: 1708093725
OK Derek, more charging system advice and analysis is on its way.
First of all a standard Bosch-type regulator has five terminals. They
are; B+, which goes to the battery's positive terminal, D+, which goes
to the positive terminal of the generator, DF, which goes to the field
terminal of the generator, 61, which is used for polarizing, and the
most important terminal, the ground screw.
There is only one field terminal on the Bosch generators, although there
are two internal field leads. You only need to be concerned about the
one which exits the generator via the DF terminal.
Given the amount of wierdness with your charging system lately you
should probably try the following.
1) Make sure all of the ground connections going from the battery,
regulator and engine/frame are clean and tight. Also check the positive
battery cable and make sure it's connections are good.
2) Add a ground lead, using #12 or #10 wire and a couple of ring lugs,
between the generator (use one of the screws that bolts the end bells of
the generator together) and the distributor mounting bolt. Now I will
grant you that this step is optional, but if you have any corrosion
between the case of the generator and its mount this is the only way to
assure that the generator has a proper path for the D- to ground (B-)
connection.
3) Check all of your other wiring connections at both the regulator and
the generator. Make sure that none of the wiring or terminals has turned
green and moldy looking. Make sure all screws are tight and that none of
the hardware is rusted out.
4) Pull the cover off the regulator and look for a pitted set of points
on the cutout relay. Chances are they have stuck together at one time,
which is why your generator wanted to act as a motor. If the contact is
pitted, file it with a points file, being careful not to alter the
spacing of the contacts.
5) After you have done all of this, fire the bike up and see if the
voltage at the positive terminal of the battery is at about 13.5 volts.
If it is much higher than this you will boil the water out of the
battery. If it is much lower the battery will be undercharged. In either
case return the regulator and try another.
Tom
'70 (July '69) Ambassador
99.8% Complete, 10% Left To Go
'82 V50-III
Shelby Township, Michigan
Derek Hamlet wrote:
| Loopframers, Further to my note on regulators, I had a wee wander through the internet and came upon the following: ALTERNATOR and VOLTAGE REGULATOR GENERATOR and GENERATOR REGULATOR B+ Battery positive B- Battery negative D+ Dynamo postive D- Dynamo negative DF Dynamo field DF1 Dynamo field 1 DF2 Dynamo field 2 So, this still leaves me with the question that the solid state adjustable output regulator seems to have a D+, D- and a DF series of tabs. The Eldo regulator seems to use a B+, D+ and DF series of terminals and the D- appears to be the ground. The field gets yet murkier. At 07:42 PM 9/1/01 -0700, you wrote:
Derek Hamlet Victoria, British Columbia |