Thanks for the advice guys,
Stripped down the motor & found a 100V stamp on the stator (nothing on the rotor/armature).
Refurbished the carbon brushes, cleaned her down, put her back together, wired a 110v plug on & plugged her into a beat up old Davenset 3kva transformer...
Bit sparky at the brushes to start with but now seems to be working @ full power, plenty of juice. The inards of the pointy end need some work but thats for another day!
I got in touch with a parts/repair company to see (cjsinclairltd, very helpful) who were able to tell me:
- the 110v is discontinued
- the only parts lists & diagrams available to them also is almost certainly 240v
- of the 240v parts most of the service parts are discontinued...
So even if it had been a 240v I might not have been able to get parts.
To be honest though, I was hoping it was 240v: carting around a transformer is a PITA & I don't work on sites. I can get 240v Stators (£35) & Rotors/Armature (£72) to change it over but without the 110v parts list/diagram to compare with I don't know which other parts I'd need to change?!