Tranz4mr’s ZW Page

 

The ZW & VW’s started in 1948. The ZW was rated at 250 Watts (180 to track at 14 amps) and evolved through the final ZW type R in 1966. The ZW evolved continually with parts and pieces continuously updated. The VW was rated as rated at 150 Watts (110 to track 8 amps max) and was built in 1948 and 1949 only.

Here are photos of some of the changes.


City of Los Angeles Approved sticker on ZW Base Plate


Underwriters Lab Approved sticker on VW Base Plate


VW Name Plate


Early VW Brass Core Plate

Late ZW 250/VW to Early ZW 275
62 ohm Breaker Light Resistor


Later VW Aluminum Core Plate

ZW/VW Variations

 
 

Late  ZW 275 Model R with Model R on back instead of on bottom


Late  ZW 275 with Blue & Black Plastic Collars


“C” Clip used to restrain integrated 1 ohm Resistor Switch Plate in left photo

Late  ZW 275 with 1 ohm Resistor integrated into switch replacing white or black resistor wire

Late  ZW 275 Model R Circuit Breaker (back)

Late  ZW 275 Model R Circuit Breaker (Front)

Very Early ZW 250 Stop Pin Turned down to adjust rotation stop point

Very Early ZW 250 Stop Pins Turned down to adjust rotation 0 voltage stop point

Very Early ZW 250 Brass Core Brackets

Very Early ZW 250 Nickle Plated Roller Arms (center is newer brass one)

Very Early ZW 250 Nickle Plated Roller Arms

(Normally brass)

Normal ZW 275 Type R with Model R Stamped on bottom


Early ZW 275 Name Plate & Top Logo