[Jukebox-list] Electronic theorists: What component values for time delay relay?

[Paul Taylor]

This is the continuing saga of my attempts to get an AMI  'K' pulse  
converter operational. I'm having to adapt a relay to take the place  
of what AMI call the 'Time Delay Relay No. 1' which is faulty (coil  
is open circuit on the inner end). I have a substitute coil which,  
whilst the same physically, is lower resistance than the original and  
won't 'delay' using the 220 ohm resistor shunt set-up of the original.

Essentially what I need to know is this: Can any electronic theorists  
suggest / calculate where to start with a combination of resistor  
and / or capacitor to give a time delay action of 40-60 milliseconds  
on a 30volt dc / 400 ohm relay coil ?
Thanks for any responses.
Paul in the U.K.