They generally use spark gaps or bigass SCR's to trigger too
_________________
Mechanical engineers build weapons, civil engineers build targets

Yes, I thought so. Starting the current flowing is one thing.. stopping it again, especially when it has a lot of inductance (motor coils) trying to keep it moving is another.

Where are the Medonian's when you need them ? (I wonder how many will get that quote ? )
_________________
Great minds discuss ideas. Average minds discuss events. Small minds discuss people

not even google does.

Meadonians -football -sport -sports -fc -FC -"Old Meadonians" -batting -recent

I thaught it was the mob from the lensman series that had superconductors and superconducting switches ;->
_________________
Mechanical engineers build weapons, civil engineers build targets

Yeah I was going with Lensmen too

but it has been a long time since I read them

Thats the crew. The Medonians from the Lensman series.
http://en.wikipedia.org/wiki/Lensman

quote - "the power systems capacities are clearly based on refinements of total conversation technology; early in Gray Lensman, the Dauntless is described as using "30 pounds per hour" of power while inertialess and running at full thrust.

Using E = mc2, this works out to 400 trillion watts of power (or, in terms of its destructive potential, 100 kilotons TNT equivalent per second ). With the advent of Medonian electrical systems following the penetration into the Second Galaxy, by the end of the series useable power on-board had been increased by another factor of a 1000.

1.21 GigaWatts ? Pah, lightweight..
_________________
Great minds discuss ideas. Average minds discuss events. Small minds discuss people

i want an inertaless bot.
i think i once worked out a total conversion system to power the earth would use 2x 44 gallon drums of water per day.
_________________
Mechanical engineers build weapons, civil engineers build targets

Here is a copy of an e mail i recieved through the OMC group.

It contains heaps of links and information about brushles motors and bateries and looking after them I thought it beter to just post the whole e mail with links rather than to disect it .Mabee some one can add the links to the wiki in the technical thread.

Reply-To : osmc@yahoogroups.com
Sent : Thursday, 18 January 2007 6:46:24 AM
To : <Undisclosed-Recipient:, >
Subject : [osmc] 5 new excellent brushless motor building articles

Goedendag

Five new and excellent brushless motor building articles by Brian Mulder, a
must read, will prevent you from asking a lot of questions:
http://www.southernsoaringclub.org.za
-> Articles by SouthEasterners.
-> Electric Motors - part 1-5

Do-it-yourself motor homepages, manuals/tutorials, checks and tests in this
motor builders tips and tricks thread. The checks and tests MAY SAVE YOU
FROM KILLING your CONTROLLER or newly wound motor:
<http://www.rcgroups.com/forums/showthread.php?t=240993>
(it's a sticky thread, at top of subforum diy motor building subforum, it's
is active, bookmark it for future reference and subscribe to it).

More must read
http://www.bavaria-direct.co.za
http://www.powercroco.de (use http://babelfish.altavista.com for automatic
translation)
http://www.torcman.de/peterslrk/index_eng.html

Help, discussion and announcements:
<http://www.yahoogroups.com/group/lrk-torquemax> (English)
<http://www.rcgroups.com/electric-motor-design-and-construction-361>
<http://www.yahoogroups.com/group/moteur-perso> (French)

Vriendelijke groeten Ron van Sommeren
14.int. electric fly-in, Aug.26, Nijmegen/Netherland
http://home.hetnet.nl/~ronvans/

Last edited by Totaly_Recycled on Thu Jan 18, 2007 8:52 am; edited 1 time in total

You might want to remove peoples personal addresses from that email, unless you want to curse them with 20 years of spam and annoyance.
_________________
https://www.halfdonethings.com/

hey just wondering. .

How would I go overvolting a 6v RS540 motor to 12v?

... run it at 12v?
_________________
( •_•)

( •_•)>⌐■-■

(⌐■_■)

YEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH

Errmmm. . I mean would it hack it or would I be seeing big clouds of magic smoke?

Normally I wouldn't overvolt a motor to any more than 150%, so 9,6V on a 6V motor, 18V on a 12V motor and so on. But I have seen a lot of robots on 200% and work too. If the motor looks up to the task, give it a go i'd say.

http://www.ampflow.com/ampflow_motors.htm

new magmotor - the E-150. only $80 american. bit heavy for the performance though.
_________________
www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz

Yep I saw that, seem's pretty weak to me.
_________________
( •_•)

( •_•)>⌐■-■

(⌐■_■)

YEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH

Could be a Suprise... I remember thinking the same about the 100watt scooter motors when I first saw them. Just saw the weight, and the power they produced and thought they'd be gutless, and I was happily proved wrong

They might be a more reliable motor then anything, being only USD$80, they would still have the great Magmotor construction. You might not have the HP of a Dewalt or similar, but you have a lot more thermal mass and the motor is probably going to last a lot longer...

Look at Reboot, has been running the same Scooter motors for years now..., how many of us can say the same with our drill motors or Mini Ev's
_________________
https://www.halfdonethings.com/