Removing a cyclo 3 speed sprocket??

[bobg]

Has anybody out there ever come across one of these and managed to get it off the hub. No luck googling so far and no obvious place to use a removal to so I suspect it unscrews like a cassette maybe ??

 

[TheDoctor]

Does it look like this one?

If so, you need a remover that goes into the slots.

 

[tyred]

Hammer and old screwdriver time I think.

 

[bobg]

No Doc, no holes at all, noting to secure any kind of removal tool to. I've been mulling it over and could secure the sprocket by wrapping a 1/4 chain round the largest sprocket gripping the chain ends in the vice, then fabricate a chainwhip using a bit of 1/4 chain to turn the smaller sprocket but I've yet to be convinced that that's how it comes apart. I don't want to damage it cos I want to use it at again ( I think there's not too many about as its 1930's I think) Hammer and screwdriver might be a last resort but holding the bloody thing even using my idea above will be tricky. The hub flange is a about 2" bigger than the largest sprocket so I cant hold it directly in the vice jaws