

Minor correction - not one, but three electric winches.Templeton South Pot Team have an electric winch powered by a surface generator. The tub has wheels running along scaffold pole rails fixed to a ladder. There is a manual deviation as the track goes around a bend. But then Templeton is one of the most engineered digs in the UK.
Is that an open invitation @Jester ? I'd be happy to do some grunt work in return for a look around.You'd be welcome to come take a look on a digging night!
Our Fernhill surface winch.Sadly no Dave. Have you got a photo please ?
how have you found the wear on the teeth of the jammers? we found we’re ripping through a jammer almost every session even with perfect angles. It may be due to the sandy nature of the dig though.We have been using a block & tackle with a hand-jammer/foot loop to essentially prussik the kibbles up the shaft in one dig, which works extremely well even with very muddy rope.
The top gin wheel is clipped to a Y-hang bolted into the wall above the shaft.
If you were concerned about dropping the load, or reducing fatigue, you could incorporate a locking/progress capture pulley into the system, but we haven't found this necessary.