Craigmount
Old School Hero
Time to work on the combination gears set-up.
History: I’ve dismantled and rebuilt a couple of Sturmey Archers in the past, an FW and an FM, and they’re straight-forward and trouble-free … provided you’re methodical, take your time, and lay the bits out in a line as you remove them … and take the occasional photo.
I didn’t dismantle the SA hub on this bike, just oiled and adjusted the outer bearings. I'm trusting to fate!
I did however have a closer look at the Cyclo adapter for the rear double sprocket arrangement. It seems to be a threaded sleeve which screws directly onto a standard Sturmey Archer 4-prong threaded driver. And the cogs of your choice then screw on to the Cyclo adapter.
These SA threaded drivers are also available on pre 1951 SA hubs, and are a direct swap for the post-50 splined drivers. See pics.
More history: I’ve never dismantled a derailleur in my life, so this is definitely a learning curve. The bike came with a Cyclo Benelux mk 7 plunger type derailleur, which I understand was sold between 1957 and the end of the 60’s - the previous owner Mike added this as an after-market fitment in 1959.
Anyway I found it to be a straight-forward and nicely engineered piece of kit, reminded me of the Sturmey Archer hubs: designed at the outset to be dismantled and serviced … no sealed units here!
I dismantled and cleaned up the whole thing, including internal sliding rod and spring.
I re-greased and tightened up the bearings on the jockey wheels, 15 tiny ball bearings per wheel – don’t attempt this on a windy day!
Then bolted the whole lot back together again, with oil.. No probs. See all pics.
Brakes are next on the list.…...
History: I’ve dismantled and rebuilt a couple of Sturmey Archers in the past, an FW and an FM, and they’re straight-forward and trouble-free … provided you’re methodical, take your time, and lay the bits out in a line as you remove them … and take the occasional photo.
I didn’t dismantle the SA hub on this bike, just oiled and adjusted the outer bearings. I'm trusting to fate!
I did however have a closer look at the Cyclo adapter for the rear double sprocket arrangement. It seems to be a threaded sleeve which screws directly onto a standard Sturmey Archer 4-prong threaded driver. And the cogs of your choice then screw on to the Cyclo adapter.
These SA threaded drivers are also available on pre 1951 SA hubs, and are a direct swap for the post-50 splined drivers. See pics.
More history: I’ve never dismantled a derailleur in my life, so this is definitely a learning curve. The bike came with a Cyclo Benelux mk 7 plunger type derailleur, which I understand was sold between 1957 and the end of the 60’s - the previous owner Mike added this as an after-market fitment in 1959.
Anyway I found it to be a straight-forward and nicely engineered piece of kit, reminded me of the Sturmey Archer hubs: designed at the outset to be dismantled and serviced … no sealed units here!
I dismantled and cleaned up the whole thing, including internal sliding rod and spring.
I re-greased and tightened up the bearings on the jockey wheels, 15 tiny ball bearings per wheel – don’t attempt this on a windy day!
Then bolted the whole lot back together again, with oil.. No probs. See all pics.
Brakes are next on the list.…...