Quote:
Originally Posted by David Dunlop
Wow! One could write a book on these SPCases alone, never mind the rest of the 19-Set equipment!
Then you get inside the cases to find several different styles of wooden stowage blocks, and locations for same, two different types of anti-rattle materials on
the insides if the lids (felt or rubber) in four different shapes and locations, and two different ways of mounting the Spare Parts List to the inside of the lid.
|
Heh. The different stowage blocks exist for the benefit of the various different models of set and supply unit (mainly the latter).
Mk.1 and Mk.2 sets had a three-commutator dynamotor, so would have stowage for two LT brushes and 4 HT brushes.
Mk.3 sets are where it all goes pear-shaped: The British (two dynamotor) supply unit had a spares tray in the supply unit) The Canadian supply unit had 4 commutators, so a full set is 4 x LT and 4 x HT brushes, it also carried LT fuses for the vibrator as well as the standard 250mA HT fuses. The U.S. Eicor supply has twin dynamotors with 3 commutators on each (it's switchable 12/24 volt) and I have no idea what's in the spares case. (I suspect nothing as brushes were not a high-failure item and were later dropped from the "required spares" - along with a large amount of the clips and springs. A post-WW2 spare parts case is remarkably empty compared to the original ones.
Chris.