Model Boat Mayhem

Mess Deck: General Section => Chit-Chat => Topic started by: john54 on June 26, 2009, 02:24:38 PM

Title: Dyson Brushless
Post by: john54 on June 26, 2009, 02:24:38 PM
Just read (in the S*n so must be right {:-{) That the new handheld Dyson vac will have a b/l motor 106.000 r.p.m ! What next nose/ear trimmer , shavers ? that would speed things up in the morning ;)
Title: Re: Dyson Brushless
Post by: andrewh on June 26, 2009, 02:35:54 PM
John

This is indeed brushless, but not OUR kind of brushless - its a Variable Reluctance (VR) motor and presumably needs its own unique driver.

I don't know what that means - but somebody will

andrew
Title: Re: Dyson Brushless
Post by: john54 on June 26, 2009, 02:43:31 PM
Might have to ask Geordie La Forge then :-)) or Scotty
Title: Re: Dyson Brushless
Post by: andrewh on June 26, 2009, 04:27:14 PM
Found this - its Dyson PR

http://www.press.dyson.com/uk/docs/X020.doc

and a pic here
http://www.drives.co.uk/fullstory.asp?id=1109
http://www.crunchgear.com/2009/06/25/dyson-dc31-claims-to-have-the-fastest-motor-in-the-world/

Don't anyone tell AndyN, or we will have a twin dyson speedie before you can say .  It will be blindingly fast till it comes to the end of its flex

andrew
Title: Re: Dyson Brushless
Post by: andyn on June 26, 2009, 09:47:09 PM
Still far from being the fastest motor in the world, the JetCat P-60, for example, runs up to 165,000rpm...

Nah it won't go in a boat, it's too electric for my liking...
Title: Re: Dyson Brushless
Post by: SteamboatPhil on June 26, 2009, 09:55:12 PM
You say that Andy, but I bet you've already had some thoughts on how to use one  :-))
Title: Re: Dyson Brushless
Post by: andyn on June 26, 2009, 11:42:05 PM
Starting my proper boats ;)
Title: Re: Dyson Brushless
Post by: BarryM on June 27, 2009, 09:11:51 AM
Spinning at that speed, I wouldn't want to be close if it decides to break up.  :o

Barry M
Title: Re: Dyson Brushless
Post by: malcolmfrary on June 27, 2009, 10:46:09 AM
I wonder if it isn't more a case of dressing up existing technology in a bunch of patents for the purpose of marketing?
The claims of superior green-ness seen a bit dubious - carbon brushes usually dont burn away into CO2, they just turn into carbon dust.  This guy claims that his motor last twice as long as carbon brushes.  So what?  How much emission is involved with what is probably going to be a complete replacement?  Anybody else remember Sinclair from the '60s?  Perhaps the two ought to get together an make a C5GT.  They might be the biggest UK car manufacturer after Morgan.