07-06-2013, 10:13 AM
Mike, all you need is a steady hand, a hands-free magnifier and the correct tools. It's very easy to distort a hairspring or damage the little pointed pivot at each end. If you can manipulate the larger surface mount components, you should be Ok with these too. It's really just practice and we all mess up the first few we attempt.
A more difficult clock movement to handle was the unreliable MkI Smith Sectronic which stupidly had a pair of coils on the moving part and a fixed magnet. There was one hairspring for the normal, mechanical function, plus two more for the coil connections, each one was insulated from the metalwork and from the other. A truly horrible arrangement which failed in practice i.e. the 'Worst of British'. I once spent several hours repairing one of these and few days later, one of the pair of moving coils simply fell off because the shellac had failed.
See here Mike, if you fancy a challenge..... http://www.electric-clocks.co.uk/SMITHS/sm-sectro1.htm
A more difficult clock movement to handle was the unreliable MkI Smith Sectronic which stupidly had a pair of coils on the moving part and a fixed magnet. There was one hairspring for the normal, mechanical function, plus two more for the coil connections, each one was insulated from the metalwork and from the other. A truly horrible arrangement which failed in practice i.e. the 'Worst of British'. I once spent several hours repairing one of these and few days later, one of the pair of moving coils simply fell off because the shellac had failed.
See here Mike, if you fancy a challenge..... http://www.electric-clocks.co.uk/SMITHS/sm-sectro1.htm
