This is driving me crazy (perhaps crazier).
I know I've seen an image of this track system but I can't remember what sort of vehicle it was used on.
I do remember it may have been a vehicle of US manufacture from the 1920s? The vehicle was in Australia which is a
bit like the Rowan Atkinson joke about the reading of a will where the beneficiary is told the safety deposit box number
is written on the underside of a stone - in Canada.
The track system turned up on a papermodel of a Soviet medium tank design form the 1920s called GUBP No.2.
The original design, which didn't get built, was obviously influenced by the French FCM Char 2C. I've attached part of the
instructions of the model which shows the track frame and the complete model.
Regards,
Charlie
Found it.
The intermediate track idea comes from Alvin O. Lombard described in his 1901 patent (US674737A).
Lombard says in the patent that the intermediate track acts like a linear roller bearing so the weight of the vehicle is
distributed over the length of the outer track on the ground and the arrangement significantly reduces friction in the track system.
I believe the intermediate track idea was used in an interwar US vehicle but I haven't found that yet.
Sorry couldn't help, Charlie.
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.
