The C9 and 2 speed Tristar motor are pretty close together in terms of power id say .Being that both vacuum have the same filters and and bag design so it be a close match . (Tristar, they used 7.5 amp Ametek motors that pulled 90" Waterlift, & that includes both single speed & 2 speed models.) none the less this is a wonderful example on a modern twist of a tristar vacuum must be a beast .
So your C9 whit German power head might be good, but it does not have the on off switch on the handle and speed control on the handle ,like this one does so i think you can appreciate this one being customize .Whit out tutting your own horn no one is attacking you or saying your c9 ,is not good but, lest appreciate this one craftsmanship .
