Vacuum Cleaners Discussions

Did anyone notice that the DC11 is back on some of the Dyson websites... Here's one that I thought was gone forever...

Severus wrote:

Hello retardturtle1:

You may know this already so forgive me if I'm being redundant.  The pano motor that Severus speaks about which is installed in dyson's DC07 uprights is a one fan reversed wired pano motor that has been in the US vacuum industry since the early 70's.   Good motor but standard issue.  Not the TOL tri-force pano motor that's used in the TOL pano uprights and canisters.

I don't know what components and in what quantity are in the DDM.  Interestingly, dyson went from one of the least expensive industry sourced standard issue motors for its first upright launch in the USA to a sophisticated esoteric non-standard vacuum industry motor for the DDM.   The timing couldn't be worse in light of the global recession especially in the USA where dyson at one time boasted two thirds of its vacuum market sales.

Carmine D.

The Dyson Digital motor is a one-fan only design. Apparently the fan is curved in three dimensions, design cues came from the aerospace industry, and it is made out of PEEK plastic.

Below Left: Fan & armature close up.        Below Right: exploded view of motor. Note the combined air intake and exhaust cowl. The exhaust air is expelled tangentially.

Here's a better pic:

Hello Trilobite:

Thanks for the DDM motor schematics.  Very interesting. 

Your pictures pigued my interest.  I checked the official dyson specs of the canisters on the dyson UK web site.  Interesting results.  Dyson's 5 year old DC11 with an encore presentation has 275 air watts.  Newest dyson DC19 T2 cann has 280 air watts.  DDM DC22 has 200 air watts.  200?  That's a far cry from full size power.   I'm even suspect of the nice even 200 number.  Does the DDM motor actually deliver suction power equivalent to industry standard vacuum motors?  Especially at the exorbitant price.  The reason for the smallish 7 inch rug nozzle on the DC22 may be the lesser suction power and not the maneuverability in tight spaces.

Carmine D.

CarmineD wrote:

Hello retardturtle1:

You may know this already so forgive me if I'm being redundant.  The pano motor that Severus speaks about which is installed in dyson's DC07 uprights is a one fan reversed wired pano motor that has been in the US vacuum industry since the early 70's.   Good motor but standard issue.  Not the TOL tri-force pano motor that's used in the TOL pano uprights and canisters.

I don't know what components and in what quantity are in the DDM.  Interestingly, dyson went from one of the least expensive industry sourced standard issue motors for its first upright launch in the USA to a sophisticated esoteric non-standard vacuum industry motor for the DDM.   The timing couldn't be worse in light of the global recession especially in the USA where dyson at one time boasted two thirds of its vacuum market sales.

Carmine D.

HI CARMINE

nothing to forgive...thats  what the forums all about..Q&A, ...ideas..learning ..fun stuff....anyway, i knew the 7 had a pan motor...but why rev wired...? and i have no clue abt where the other motors are from..but i think the DDM was in one of  his earlier cans .[not sure]..guess the timing is bad at the moment for a chunk of change on a vac... that is an  intresting  looking motor tho...i never seen a motor like that. so whats your take on it ?

Trilobite wrote:

TRIBOLITE...

Yes ,,thank you for the all the info  and i do find it to be an intresting design....but as CARMINE said...200 a/w is ALOT lower than 280...not seeing where this motor is supirior over all the rest...or how it can overcome a 40% a/w loss..

retardturtle1 wrote:
That is only 29% loss.

Carmine failed to mention the UK DC22 uses a carbon brush motor.  The U.S. DC22 uses a DDM...  88,000 rpm, pulls the Baird meter to 10 and sustains this for 4 - 7 years.

DIB

HARDSELL wrote:

awwww..thank  you all over the place.

DysonInventsBig wrote:

DIB:

I first went to the Japanese dyson site but unfortunately I can't read Japanese.  The dyson UK was the best alternative.  If you know the air watts for the DDM DC22 post them for all of us to know and judge.

I have a HOOVER China sourced cann with a cord winder purchased in August 2007 that I've used for almost going on 2 years now in a couple months.  It's smaller than the DDM DC22 and has full sized suction power with a full size rug/floor brush.  It cost $50.

Carmine D.