(SHW) 4090 A handsome 6:1 Jackson Brothers ball
drive complete with graduated 1-3/4" diameter 180 degrees
dial plate, numbered '0-100'. 1" diameter knurled aluminum
knob. Perfect control for air variable capacitors!
Ball Drive
Dial Assembly
(SHW) 4060SK Jackson Brothers. All metal
no plastic parts. Incorporates 1/4" 6:1 Ball Drive. 2" diameter
body, 1-1/8" diameter knob. Output torque 26 in./oz. Made
in England.
$32 each -
$30 (3+)
*** SOLD OUT ***
Dual Reduction
Ball Drive
(SHW) 5411FS 6:1 ratio in both directions but 30:1 ratio for first turn when
reverse direction. 1/4" shaft and bore. Output torque: 26 in/oz.
$19.95 each - $18.50 (3+),
$17 (10+)
Jackson 6:1
Ball Drive
(SHW) 4511DAF The old standby. 1000's of these Jackson Brothers ball
drives are found in all types of commercially made equipment like the YAESU
FT101 amateur transceiver, as well as homebrew stuff. Stock up for the next
construction project or for replacements. 1/4" x 1" shaft, 1/4" female
on back.
10:1 Ratio
Ball Drive
(SHW) 5870 Jackson Brothers 10:1 ratio ball drive. 1/4" shaft
and bore. Output torque 78 in./oz. 3/4" center to center mounting holes.
