Taka's "counterpoint" about the Ultranator

[David Head]

No sparky, no boomy..

Brett Dikeman wrote:

> At 9:13 AM -0500 2/27/02, TM wrote:
> >Orin-
> >Thank you for correcting my terminology- several others knew what
> >I meant by commutator, but I hope I wasn't muddying everything up
> >by calling it the wrong thing if it's called a collector ring.
> >
> >As for the wear comment, Bosch rebuilds replace the ring entirely with
> >a new one- I have heard from several people (incl. my mechanic) that
> >other rebuilders may merely machine the ring smooth.
> >
> >Why would they do this if there is no advantage?
>
> Probably the only advantage is the labor involved.  I've redone
> contacts on small motors, for example, that were not badly
> damaged...its really easy and I can get a mirror-like finish that is
> incredibly smooth and easy on the brushes, but it takes at least 15
> minutes, probably...and that's using something to spin the whole
> rotor(mototool, actually!)  Machining(or similar) is fine, just as
> long as you machine it perfectly smooth(or finish it off to
> perfection), or you WILL chew thorough brushes in no time.  I suspect
> many machined rotors simply aren't smooth enough after machining.  I
> could very well be wrong.
>
> While we're on the subject of brushes, who can tell me why brushless
> motors were invented?  Super special bonus prize(er, everyone's
> wonder and amazement) to the winner(yes, I know why :-)
>
> Brett
> PS: shameless, off topic, check-this-out item on something important
> everyone should be aware of:
> http://www.wired.com/news/politics/0,1283,50702,00.html
> http://www.theregister.co.uk/content/archive/21830.html
> One little note: record sales were great in the years when napster
> running full tilt.  Record sales are down 10% after Napster basically
> shut down and with the economy in the toilet.  I know retailers who
> would KILL for -JUST- a 10% decrease in sales...
> --
> ----
> "They that give up essential liberty to obtain temporary
> safety deserve neither liberty nor safety." - Ben Franklin
> http://www.users.cloud9.net/~brett/