Some thin nosed pliers are the tool to use. Don’t panic if you break one as I have plenty of spares !
I don’t know of anyone making the reduction gears at the moment, so look around for an old Sturmey-Archer pushbike rear three-speed hub, and salvage the gears out of it. The instructions for making the gadget are in ‘Technicalities’, and perhaps Alan Noakes could make one up for you ?
Brian
