Artillery Trailers

[Rob Beale]

Wheels were developed from wooden spokes and rims with steel tyres for horse draught to rubber tyres on thes wheels for mechanised draught.
(I assume this was traction engines and the like).
Final change was to pneumatic tyres for draught by motor vehicles like gun tractors.

Speed Limits:

Pneumatic Tyres: 20 mph on good roads, 10 mph on indifferent roads

Rubber-tyred or padded wheels and unsprung: 15 mph good roads, 10 mph indifferent roads

Wooden wheels steel tyred 8 mph (no mention of road type!)

The WW1 equipment described in the threads above used the No 45 2nd class C wheel which had 6 pairs of spokes and a 6 part rim (felloes) of 56 ' diameter. The pic shows a cross section of the wheel. Spokes are oak and felloes are ash