[john martin]

 looks like you can get an Airflex pro now in ' Ashbys ' spec   

 Using the same Series combination of high power motor + trailing standard motor , probably electro motors .


Catering for defected Ashby customers perhaps      or maybe they were impressed by the enforcers vacuum .


 http://www.cleansmartsupplies.co.uk/acatalog/Airflex_Pro.html