[rycalshaw]

hi,can anyone tell me where i could get a vac motor for my prochem comanche, mine keeps going for so long then knocking itself off, also could i get a 3 stage to fit and are they easy to install..cheers

[john martin]

You might just have badly worn motor brushes ?  does it sound like this running ?

http://www.youtube.com/watch?v=0kkj7U4W3ow

You have two two stages ,  i don't know if they are 7.2" or 5.7 "
In any case you could replace the motor thats attached to the waste tank with a 5.7" three stage 1400w from e-bay or your favorite supplier  ...  and keep the other two stage in series with it .