[john martin]

Just listing a few higher performance vacs available for anyone interested ...( no one perhaps ) 
I made a short list according to rated performance ... all are 240v and available to buy now ...most on the list use a newer conical fan assembly like the 6.6  ..... for reference the better of the standard three stage lambs fitted to most machines has a CFM aprox 100 and just under 140" lift .... still quite a good performer .



NO1 -   AMETEK 8.4                      CFM = 142       LIFT = 150
 PRICE 300 USD

http://www.drillspot.com/products/1479706/Ametek_Lamb_122176-18_Vac_Motor_Tangential_142_CFM_Dia_84


NO2-   LIGHTHOUSE 5.7                 CFM = 121       LIFT = 151
PRICE 150 USD

http://www.centralvacuummotor.com/Lighthouse/LH6765-OD-220.JPG


NO3-  AMETEK 6.6                          CFM = 139       LIFT = 132
    PRICE 160 USD
http://www.steam-brite.com/store/ameteklamb-ametek-lamb-motor-volts-p-10442.html



NO4  -LIGHTHOUSE                          CFM= 130       LIFT= 126
    PRICE    139 USD
        116472-AL-OD
http://www.centralvacuummotor.com/Lighthouse/LH9992-240.jpg




NO5-  DOMEL  5.7  491.3.                CFM = 114       LIFT = 143
   PRICE APROX 150-200 USD
 http://vacmotors.domel.si/en/products/wet_vacuum_motors/491-3-761/detail



NO6-  DOMEL   7.2 49937012                          CFM =130
LIFT = 120        PRICE  190 USD
http://www.centralvacuummotor.com/Domel/4993701.JPG



The 8.4 -  Big performance .... too expensive ?

The Lighthouse 5.7 - USA built  ,Huge lift - A straight swap into most machines .

The 6.6 - extra thermal/ bearing protection good if works ... its a 7.2 for fitting purposes .

Lighthouse 2 stage  -       6.6 design .... 5.7 fitting

Domel 7.2 -    made up the road in slovakia  ... highly rated brand .

Domel  5.7 -  Brute with 1750 watt motor ..