craftsman ridgid & workshop brand (emerson tool co) 6 & 9 gallon vacs

[ridgidwd0670]

why did emerson tool company put low efficiency motors in the craftsman, workshop & ridgid 6 gallon & 9 gallon shop vacs? i feel that the ridgid wd0625 & craftsman 17741 (both are 6 gal) have more airflow (cfm) than the craftsman cmxevbe17584, workshop ws0915va & ridgid wd0670 & wd0970 vacs do

 

[ridgidwd0670]

low efficiency motor from a 6 gal/9 gal vac—very little airflow/suction & high pitched noise

 

[ridgidwd0670]

the better motor—still equipped inside ridgid wd4070 4 gal vac & craftsman (emerson made), workshop & ridgid 12 gallon & larger vacs

this motor produces lots of airflow/suction & lower pitched sound

will this one fit any emerson 6 or 9 gallon shop vac:

craftsman
cmxevbe17584
cmxevbe17590

workshop
ws0600va
ws0600ss
ws0610va
ws0900va
ws0910va
ws0915va

ridgid
wd067x
wd097x
6000rv
hd0600
hd0900

x may be any # from 0-9 due to special promo models

 

[lesinutah]

Emerson

Emerson makes proteam backpack vacuum.
Sears went belly up. Stanley at Walmart bought rights to Craftsman. Lowe's also sales Craftsman. Lowe's tools are kobalt. Wal Mart is hyper tuff.home Depot is Ryobi. I've also only seen rigid at home Depot.
Back to the point. Sears rights were sold. This lead retailors to diversify vacuums. If you carry too many skus it confuses the customer.
It's going to have weird things like this for a few more years until they build under a new model.