I read the Cana vac website information, interesting reading for sure, the conclusion they end up with is... a single 8.4 motor gives better performance than dual motors either in parallel or series.
So if this is the case why isnt there a machine available in the UK using a single 8.4 motor?
When i was choosing my Enforcer I had the option to choose a 7.2 + 7.2 or 6.6 + 6.6, and a combination of all but ended up with two 5.7 as they were the most economical to replace and allowed me to run both motors and pump from one 13a plug.
Has an 8.4 motor been tested in wet extraction machines? can they tolerate moisture? and more importantly what is the cost of replacing them if and when they die?
Russ , that site had some good points but you have to carefull how some of them are interrupted .
The central vac system they make is running a single 8.4 ... so they then make case as to why what will be better than some other systems .
You could have a 650 airwatt motor that has about 90" lift and 160cfm ( there is actually a single stage version of the 6.6 with those figures )
If you put two of those in parallel you still have 90" lift .
The point its making is that a single 8.4 has 150" lift so at the end of the working tool it will work better than that two vac system that has the high airflow but low lift .
It would be different if you had two 650airwatt motors that had say 150" lift and 120cfm in parallel as the lift would be equal to the single 8.4 but you would benefit from the increased airflow also .
It also doesn't compare the 8.4 to a twin series setup in that article .
The 8.4 is about £270 over here , in the states its selling for as little as 150 dollars in some places , it is a very good motor , 150" lift ( although iv read some had tested it at only 130 or so , I has 145cfm .... about 680 airwatts . Amp draw is also relatively low .
