I missed the 1911 version of the "cone clutch" (or at least that is what it looks like). Not much info. on this other than this picture from the 1911 Douglas Brothers Booklet.
Nice. This would have to be pretty rare? It seems the clutch actuator for this model (announced at the end of 1910) was somehow mounted on the super-long footrests...
Back to George's bike: Like the non-standard handlebars, I wonder if there's a case to leave the home-made footrests and clutch pedal as they are? Sure the correct pedals could be located (sorry I don't have them, and they will be hard to find) and the foot boards and their mounts reconstructed, but what about a deep clean and preservation in the state the last owner left it in?
I'm not sure what I'd do. I'd have to change the AMAL carb to a veteran AMAC or Douglas, and the bicycle pedals are very ugly indeed (Black Sheep's "bodge" is spot on!) but they could stay, as could the bars, in an "oily rag" recommissioning.
If original-style foot pedals, foot boards, handlebars, handlebar levers... could be acquired, an oily-rag 1913 Model R would be lovely. And of course a full restoration with paint and plate would look great, but I'm not sure I'd be doing it here. Decisions...
The petcock is for putting semi-fluid grease into the gearbox.
Leon