Instructions for the PFR3 Baby Black
Widow Paddle
Copyright April 28, 2009 by Jerry Haigwood, W5JH
Introduction
Thank you for purchasing the Baby
Black Widow portable paddle. You will
find it is a high quality product that will give you many years of good
service. Before assembling the paddle,
please read through the instructions to insure you understand the order of
finishing and assembly.
Inventory
Before continuing, it is a
good idea to inventory the parts. The machined
parts come wrapped in paper towels to cushion them and to keep them from
cutting the envelope. The two small coin
envelopes contain the smaller hardware. Figure
1 and 2 shows a picture of the parts.

Figure 1

Figure 2
|
|
|
Quantity |
Description |
|
|
|
|
1 |
Base
(Anodized machined part) |
|
1 |
Front
Bracket (Anodized machined part) |
|
1 |
Stop
(brass machined part) |
|
2 |
Arm
(brass machined part) |
|
2 |
Contact
Post (brass machined part) |
|
1 |
Tension
bar (brass machined part) |
|
2 |
4-40
x 5/8 inch Socket Head Silver Plated screws |
|
2 |
4-40
x 5/8 inch Socket Head Black Oxide screws |
|
4 |
4-40
x 1/4 inch Socket Black Oxide screws |
|
2 |
4-40
x 1/4 inch silver plated brass pan head screws |
|
4 |
4-40
x 1/4 inch zinc plated pan head screws |
|
5 |
4-40
x 1/2 inch brass pan head screws |
|
2 |
4-40
brass hex nuts |
|
3 |
4-40
x 3/8 inch flat head stainless steel screws |
|
2 |
#4
stainless steel inside star lock washer |
|
6 |
Red
knurled heads for #4 socket head screws |
|
2 |
Finger
pieces – Red |
|
4 |
3/16
inch stainless steel balls |
|
4 |
0.200
x 0.44 inch plastic feet |
|
4 |
#4
x 0.063 inch nylon shoulder washer |
|
3 |
#4
ground lugs |
|
2 |
4-40
x 0.590 inch brass hex standoffs |
|
1 |
1/8
inch stereo plug |
|
1 |
3/16
inch x ¾ inch compression spring |
|
2 |
3/16
inch x ¼ inch compression spring |
|
2 |
2
inch #30 Silver Plated bus wire |
|
1 |
4
inch Teflon covered Silver Plated wire (not pictured) |
Table 1
Before opening the parts, locate
2 plastic or glass bowls to hold the small parts. Open the envelopes and place the parts in the
bowls to keep them from rolling all over the place. Using Figure 1 and Table 1, inventory the
parts. If you find a few extra parts,
consider it your lucky day! If you are
short a part, contacts us right away and we will make sure we get you the part(s)
fast. It is a good idea to keep the
small envelopes just in case some small part is hidden inside. See Figures 3, 4, 5.

Figure 3

Figure 4

Figure 5
Subassembly
Before proceeding with
finishing or assembly, you will need to do a small amount of subassembly. First, you will need to press the Red knurled
heads onto the 6 socket screws. There
are 2 Black 5/8 inch long socket head screws, 2 Black ¼ inch socket head
screws, and 2 Silver Plated 5/8 inch socket head screws (see Figure 6). Thread the socket head screw into one of the
brass hex spacers. Using a vice or
similar device, carefully press the Red knurled heads onto the socket screws as
is shown in Figure 7.

Figure 6

Figure 7
When you have pressed all the
Red knurled heads onto all the screws you should have a set of parts that look
like those in Figure 8.

Figure 8
Finishing
The brass parts are now ready
for sanding and finishing (see the paddle finishing document). Before continuing with the assembly, you need
to decide what type of finish you want on the brass and complete it. Before starting the final assembly, allow
plenty of drying time for whatever clear coating you use to cover the brass.
Assembly
Welcome back from the
finishing process. I hope your finish
turned out the way you wanted it. We are
now ready to begin the assembly. In
about an hour or so, you will be on the air sending some of the smoothest code
you have ever sent! Let’s get started!
Select a flat table or work
bench to do the final assembly. Set the
base in front of you on a soft cloth (towel, etc.). Orientate it the same as Figure 9 below. Using a large diameter drill (3/8 inch works
well) deburr the holes shown in Figures 9 and 10. Figure 9 shows the base top and Figure 10
shows the base bottom. Note that only 2
holes are deburred on the bottom side (figure 10). Do not remove a large amount of material. Only
remove a small amount.

Figure 9

Figure 10
Next, you will insert the
nylon insulators. Locate the 4 white
nylon insulators from the “P” bag. These
insulators are a press fit into the holes shown in Figures 11 and 12.

Figure 11

Figure 12
Locate the 4 black soft
plastic feet. The feet have a pressure
adhesive on the back side. Peal the
black feet from the paper strip and press them in place on the bottom side of
the base as is shown in Figure 13. Press
down hard on each foot to insure the adhesive “sets.”

Figure 13
Locate the following parts:
|
2 |
brass contact posts |
|
2 |
4-40 x 5/8 inch Silver
Plated screws with red caps |
|
2 |
4-40 brass nuts |
Assemble the parts as is
shown in Figure 14.

Figure 14
Mount the contact posts as is
shown in Figure 15 below. For hardware,
use two 4-40 x ½ inch brass screws and two #4 ground lugs. Orient the contacts and ground lugs as shown
in Figures 15 and 16.

Figure 15

Figure 16
Locate the following parts
shown in Figure 17:
|
1 |
brass stop |
|
1 |
4-40 x ½ inch brass screw |
|
1 |
#4 inside star lock washer |
Mount the stop as shown in
Figures 18 and 19. Leave the screw lose
at this time.

Figure 17

Figure 18

Figure 19
Locate the following parts as
is shown in Figure 20:
|
2 |
brass hex spacer |
|
2 |
4-40 x ½ inch brass screw |
|
1 |
#4 inside star lock washer |
|
1 |
#4 ground lug |
Install the parts as is shown
in Figure 21 and 22. Make sure the
ground lug makes good contact with metal of the base (the ground lug goes under
the screw of the side where the anodizing has been ground away).

Figure 20

Figure 21

Figure 22
Locate the following parts as
shown in Figure 23:
|
2 |
round red paddle fingers |
|
2 |
brass arms |
|
2 |
4-40 x ¼ inch Silver Plated
pan head screw |
|
4 |
4-40 x ¼ inch zinc plated
pan head screws |
|
2 |
Silver Plated wires |
Assemble the parts as is shown in Figure 24. Be careful with the small wires. Notice that the wires extend out into
different directions from one another forming a right hand paddle and a left
hand paddle.

Figure 23

Figure 24
Using the large drill bit, deburr
the holes where the ball bearings will ride.
The drill bit points to the hole in Figure 25 below.

Figure 25
Locate the following parts as
shown in Figure 26:
|
1 |
brass tension bar |
|
2 |
4-40 x 5/8 inch black oxide
red cap screws |
|
2 |
3/16 inch x ¼ inch long
compression spring |
Slide the springs over the
cap screws as is shown in Figure 26.

Figure 26
It is now time to start the
final assembly. Some people may claim
you need at least three hands, believe me it can be done with only two! Place the two of the stainless steel ball
bearing on the holes in the base as is shown in Figure 27.

Figure 27
Place the arm subassemblies
on the base as shown in Figure 28. Make
sure the small Silver Plated wires go through the two holes in the base as
shown. The arms should sit on the two
ball bearings. Place the two remaining
ball bearings on the top of the arms as shown.

Figure 28
While holding the arms with
one hand, place the tension bar over the ball bearings and fix the tension bar
to the hex spacers using the 5/8 long red cap screws as shown in Figure
29. Do not over tighten the screws. The arms should be able to move freely but without
undo “slop.”

Figure 29
If everything is assembled
correctly, the bottom of the paddle should look like Figure 30.

Figure 30
Locate the long compression
spring. Cut it to a length of 5/8 inch
long.
Refer to Figure 31. Inserting the spring return has given many
people problems. I have found a trick
which helps a lot. Temporarily remove
the stop. With the removal of the stop,
you can pinch the end of the arms together exposing the spring holes. Pick up the spring and compress it slightly
with a pair of small needle nose pliers.
While pinching the arms together, insert the spring. Gently release the spring and pray it stays!
Reinstall the stop. Tighten
all hardware.

Figure 31
Locate the following parts:
|
1 |
front bracket |
|
1 |
1/8 inch stereo plug |
|
3 |
4-40 x 3/8 inch flat head screws |
Thread the 1/8 inch stereo plug into the bracket as
is shown in Figure 32.

Figure 32
Attach the front bracket to
the base using the three flat head screws as shown in Figure 33.

Figure 33
Prepare two Teflon covered
wires by cutting them to 2 inch each, stripping the ends 1/8 inch and tinning
each end with solder. See Figure 34.

Figure 34
Solder each wire to a ground
lug on the bottom of the paddle base as shown in Figure 36. Push the two wires through the hole in the
base and twist the wires together as is shown in Figure 35. Solder the wires to the two contacts on the
stereo plug. Please note that standard
convention is as follows. The tip is
used for dots and the ring is used for dashes.
Typically the paddle finger under your thumb is used for sending dots. For a right handed person this will be on the
left of the paddle (assuming the paddle fingers are facing you). For a left handed person
the paddle finger on the right side would be used to send dots. Now to get really confusing, many left handed
operators learned how to send code with a right handed paddle. If that is the case, just reverse everything
I just stated. J

Figure 35
Solder the two ground wires
as shown in Figure 36.

Figure 36
You are now done with the
assembly of the paddle. It is time to
make some adjustments. First open up the
spacing of the contact wide. Next, check
the movement of the arms on the bearing. The arms should move freely without
any binding. The tension bar can be
adjusted using the two red cap black oxide screws. The compression of each spring should be
equal. Next, adjust the spacing of the
contacts by screwing in/out the red cap contact screw. Once the spacing has been set, you are ready
to try the paddle out. If you have a
Hendricks PFR-3 transceiver, plug the paddle into the transceiver. Using the two ¼ inch long red cap screws,
attach the paddle to the transceiver.
If you would like to use the
paddle for some other radio, you will need to obtain a stereo cable with a 1/8
inch female stereo socket on one end and a plug of your choice on the other
end. The female 1/8 inch socket attaches
to the paddle and the other end connects to your keyer
or radio. The following Figures show
what the completed paddle show look like.

Figure 37

Figure 38
73, Jerry W5JH