(see my other auctions for positive earth model).
(Field to Earth or 'shunt field')
A heavy duty fuse holder is INCLUDED with this auction !!!
so, the regulator is $76, the fuse holder is $6= $81 plus postage & packing
Description and features of the DVR2™
MADE IN THE UK !!!!!
The DVR2™ regulator is the well established and regarded solid state dynamo voltage regulator from Dynamo Regulators Ltd.
It is a modern electronic 'solid state' replacement for the original electromechanical 'CVC' regulator units on Classic Motorcycles equipped with dynamo electrical generation. It features excellent charge voltage stability from the lowest revs to maximum speed, zero low speed battery discharge into the dynamo and high fault tolerance.
DVR2™ Specification
- 6 or 12 Volt selectable - change voltage at any time
- Positive & Negative earth versions
- Size - 56mm x 33mm x 18mm.
- Fits comfortably in Lucas or Miller case
- Or mount on its own with single M5 stud
- Fitted with heavy duty 3mm diameter leads
- Use with Lucas or Miller and other (Field wired to earth) dynamos (view Miller DVR modification for use with DVR2)
The DVR2™ employs a tough aluminium alloy case for excellent heat transfer and a slim unit
Robust & reliable, cool running & efficient. More light..... Less heat.
Available in positive and negative earth versions, 6 or 12 V selectable. Set to 6 V by connecting an additional (white) wire, 12 V by leaving it unconnected (insulated). The module is compact and does not run hot. This means it can be fitted as a stand alone unit, in a toolbox or bolted to rear mudguard, etc. or housed in either a Lucas or Miller regulator case, to maintain original appearance.
The DVR2™ is similar in cost to some other regulators but its performance and reliability are superior to these competitors. With the DVR2™, there is no battery discharge to field at low revs. Battery voltage is stable (above cut in speed) regardless of your speed. Your dynamo will start up (and be regulated!) with no or very low battery. Do your homework and come to DRL first: don't be one of those who buy from us only after a bad experience with one of those 'too good to be true' cheap far east import units.
Introduction :
Benefit from fitting a DVR2 high quality 'solid state' electronic dynamo
regulator . . .
* Brighter & more stable lighting (steady ammeter reading)
* Reliable charging from lower engine speed without overcharge
* Starts with a 'flat' battery or none at all, no low speed discharging
* Easier starting due to greater battery power
* Longer battery and bulb life
* Lower maintenance (no adjustments to regulator cut-out and less
battery topping up)
DRL has made every effort to ensure a robust and reliable design, using
up to date electronic components assembled using dependable ‘surface
mount’ technology. Housed in a very presentable aluminium case.
Compact size, electrically rugged and fault tolerant, with superior heat
transfer to keep the circuitry cool for enhanced reliability.
Protection features:
The DVR2 is protected against voltage spikes from the dynamo or on the
battery line, reverse polarity connection of the dynamo or battery, and
will survive short circuit of the output. For full protection it is essential to
fit a fuse in the line from the regulator output (‘A’ Terminal) to the
ammeter or battery ‘live’ terminal. Fitting a fuse is good practice with
either original equipment type ‘CVC’ regulators or an electronic
replacement. Use a 12 to 15 Amp fuse for 6V, or a 10 Amp fuse for 12V.
6 or 12 Volts?
Running a 6V dynamo at 12V using a DVR2 brings the benefits of
brighter, cheaper bulbs, but requires increased dynamo speed over 6V
operation. Sometimes charging may not be adequate during prolonged
slow running. A Lucas E3L dynamo in good condition will safely provide
80W or more output at 12 V. Staying with 6V operation adds solid state
zero-maintenance convenience to the system, and with modern bulbs
gives good lighting at all practical speeds (provided that the wiring,
switches and connectors are in good condition).
Fitting :
The DVR2 will fit inside Lucas or Miller cases or is easy to mount (and
hide) on its own. Fixing is via a single M5 (5 mm diameter) stud. Size is
56 x 33 x 18 mm. The unit produces an exceptionally low level of heat,
but if very heavy continuous loading is demanded it is wise to mount it in
a flow of cooling air. The maximum safe continuous output current for
the DVR2 electronics is 12 Amps, but this current would overheat many
dynamos (for example the Lucas E3L) if prolonged.
Connections:
Before fitting the regulator it will be helpful to confirm your dynamo
gives a good output of the correct polarity.
Seek qualified assistance if unsure. Disconnect battery or remove fuse
before connecting!
Connect the five leads as follows (and study the included wiring diagram):
Black lead (Negative Earth) OR
Red lead (Positive Earth) to Earth / frame / chassis
Green lead to Field
Yellow lead to Dynamo
Brown lead to Ammeter
White lead to Brown lead for 6 V operation
White not connected (insulated) for 12 V operation
Don’t forget to refit the fuse!
Guarantee
The DVR2 is guaranteed for one year from purchase against
manufacturing defects, but not for faults caused by improper fitting or
use. If a fuse is not fitted as described above any claim for damage may
be rejected.
If in any doubt about fitting this electronic regulator correctly
seek the assistance of a competent person!
Other Notes
* The resistance of the dynamo field winding must be greater than
2.5 ohms. If less the dynamo will be very inefficient and there is a
real risk of damaging the regulator.
*Disconnect or remove any field resistor which may be fitted at the
dynamo or elsewhere (wire-wound item connected to field
terminal). Ensure that the field wire of the dynamo goes to the F
terminal of the DVR2, and that no other wire is connected. Failure
to do so may result in overcharging and possible damage to
equipment.
* The DVR2 is not suitable for use with 3 brush dynamos. However,
usually the 3 brush dynamo can easily be converted to a 2 brush
unit.
*The DVR2 is not designed for use with a large capacitor (e.g. Lucas
2MC) at the output.
* The metal case of the DVR2 is not connected to the ‘earth’ lead. If
the earth connection via the lead is lost the dynamo output voltage
will not be regulated.