Emerson's Brooklands ABC Sopwith - a question?

It could well be a reincarnation of the 1919 design. G&N seems to have improved quite a few of Bradshaw's ideas.
I wonder if the original design ever worked. G&N had to add fins to cool the oil so there's a chance in 1919 there were cooling problems or maybe ABC just had to leave the solution aside to reduce costs.

In answer to the question Neil had about about the photograph, I asked Roger Bird, the Brooklands authority on such matters and his reply is 'Jack Emerson an his ABC on the starting line in front of the timekeepers box. Before the Great War (and just after) that box was at the Fork on the outside of the track adjacent to where the Vickers factory expanded'.
regards
Ian

The attached pictures show a ABC Gnome Rhone with a small finned oil sump under the engine. It looks to have a oil pump on the/driven from the timing case. Not sure how the oil plumbing works or the age of this engine. The frame/running gear is obviously later and from another machine.

Bob Thomas' Sopwith was reputedly a race machine. And sure enough, it did (does) have a shortened front leaf spring. It appears in various photos, ref. for instance Newsletter No. 1004 of December 2013.
I think it still reposes at Milntown, near Ramsey in the IoM.
Otherwise, its spec. seemed fairly standard. But who knows what might lurk inside the works?

Oops! Forgot to add the following to the previous.
There is plenty of evidence, photograhic and otherwise,that very early Sopwiths (prototypes) were equipped with a pressed-steel oil sump, and an oil pump which presumeably circulated this oil to all the important bits. The drive to the pump was via a downwards extension to the timing chest. But probably as a cost-cutting exercise, all this was abandoned. The simplified design that later went into production, as time has richly demonstrated, was certainly adequate.

Hi Please see attached photos of Bob's race bike. You can see the revised oil pump, I think it is similar to the one that Norton fitted. As can be seen there is no attempt to recirculate the oil, it is still a total loss. I guess he was only doing short races so it didn't matter(?) Also please see the springs he appears to have had fitted onto the original value gear. Does this help with anyone's interests? I have also included a snap of another bike that has a different oil pump but I can't recognise it. I have some more pictures if anyone needs any more details. Regards Neil