Cd-rom motor til fly
Asbjørn Husebø
har 11 kontaktpunkter!?! Motoren er børsteløs. Hvordan skal jeg koble denne
for å få full fart?
Asbjørn
Tom Ivar Helbekkmo
Der gikk nettopp en tråd om dette på rec.models.rc.air, faktisk.
-tih
--
Puritanism -- the haunting fear that someone, somewhere, may be happy.
Asbjørn Husebø
news:86d6uol...@athene.i.eunet.no...
> Der gikk nettopp en tråd om dette på rec.models.rc.air, faktisk.
Takk, men jeg kan ikke finne den...
Asbjørn
Terje Martinsen
finner den og legge den ut.
Jeg skal spørre vår elektro spalteredaktør om å lage en artikkel til neste
MI på saken.
Terje
"Asbjørn Husebø" <asbjo...@chello.no> wrote in message
news:hYNP8.720$8X5....@news01.chello.no...
Jon-Magne Johansen
--------------------------------
I found this message in the eflight mailing-list (www.ezonemag.com), by
Paul Goelz:
************
Guys,
I got turned on to this on the Piccolo (electric heli) BBS.... the Germans
are experimenting with using motors salvaged from dead CDROM drives. The
faster CDROMs have nine pole brushless motors that are relatively easily
converted to electric flight. Supposedly, the motors from 32X and faster
CDROM drives have magnets that are powerful enough for our uses.
Basically, the modification goes as follows:
1. Remove the motor from the base.
2. Make a new base with whatever mounting holes you need. I use a
rectangular base made from aluminum with S280 mounting hole centers.
3. Remove the stub shaft from the rotor and replace it with a longer
shaft
salvaged from one of the guide rods for the laser head. The sahft and the
rods are are 3mm diam.
4. Remove the bronze bushing from the stator and replace it with a pair
of
3X6X2 ball bearings. This is in fact the hardest part, because the center
hole s 6.5mm, which is not a standard bearing size. I made an aluminum
adapter sleeve and used a 3X6X2 flanged bearing for the upper and a
regular
3X6X2 bearing for the lower.
5. Rewind the stator..... I'm still experimenting to find the best wind,
but the one I have with 16T of #24 wire has about the same output power as
a S380 or S400 and weighs a total of 18 grams! My other one has 19T of
#28, and is about the same output power as a S280. Maybe a bit less. But
again, it weighs 18 grams!
The only fly in the ointment so far is that my Schulze Future 18be does
not
like to fire into 9 poles reliably at higher speeds. I have the
Astroflight version of the Jeti 06-3P, and it runs just fine. It would
be
fine in an airplane, but my use is in a Piccolo heli, and the Jeti is too
"steppy" in the upper end of the throttle response to work well in the
Piccolo. But YEEEOWIE, does it have power! And after a 10 minute flight
at about 25W, the motor is barely warm.
I'll be wandering the Toledo show tomorrow (Friday) and will have them
with
me for show and tell. I'll be wearing a name tag with a little Piccolo
logo on it that says "PIC".
Anyone else care to try it?
End of Paul's message.
*****
My own links on this subject of building *cheap*
high-torque/high-performance/no-gearbox brushless motors:
******** Discussion & help ********
· The LRK-torquemax e-mail list for help and discussion on construction
and design (English), monitored by yours truly:
http://www.yahoogroups.com/group/LRK-torquemax
To join the list, click 'Join This Group' in upper-righthand corner, or
send an empty message to LRK-torquem...@yahoogroups.com.
· If you can read a bit of German, check out the German LRK-torquemax
forum, it's *very* good: http://www.rcline.de >> rc-forum >>
elektro-motoren
· LRK-torquemax meet & Electric fly-in, June 23rd 2002, Nijmegen the
Netherlands:
http://home.hetnet.nl/~ronvans/
Don't let the German language deter you, the pictures are worth more than
a thousand words!
· picturs, tables, drawings, LRK in helicopters:
http://www.torquemax.de/Motor.htm (G)
· pictures, tables, by other builders:
http://www.torquemax.de/Andere.htm (G)
· pictures, tables, drawings, LRK in helicopters:
http://members.aol.com/schwaabbel (G)
· English version of winding calculation tool:
http://groups.yahoo.com/group/LRK-torquemax/files/How%20many%20turns.xls
(E)
· Winding calculation tool:
http://www.geocities.com/roman65536/fly/mot.html (E)
· Removing windings from old motors:
http://www.eschmidt.de/galerie/wicklung/index.htm (G)
******** Construction articles & tools & pictures ********
· Construction articles I & II, they describe the classic LRK-torquemax
for outside fuselage mounting:
www.aerodesign.de/peter/2001/LRK350/EM-4-2000/LRK-EM-4-2000_eng.htm (E)
www.aerodesign.de/peter/2001/LRK350/EM-1-2001/LRK_EM_1_2001_eng.htm (E)
· The bible, LRK for inside fuselage mounting, more construction
articles, winding calculation tool, measurements, diagrams, a motor test
rig, diy brushless controller:
www.aerodesign.de/peter/2001/LRK350/index_eng.html (E)
· Building manual:
http://www.torcman.de/eco/anl_eco_106e_scr.pdf (414kB, may take a minute
to download)
This manual is for Peter Rother's design but it has many, many useful
tips, tricks and winding calculation examples.
******** More LRK-torquemax builders' homepages ********
· FW Ta400, 4.35m wingspan, 6 classic LRK's: (E)
http://users.cybercity.dk/~ccc16084/ta400a3.html
This site can be a bit slow at times.
· pics & diagrams, LRK 'inrunners': (E)
http://www.cenara.com/users/ce00359/Default.htm
· help & discussion mailing list, archive, pictures, drawings: (E)
http://www.yahoogroups.com/group/LRK-torquemax
· mailing list's pictures and drawings archive: (E)
http://photos.groups.yahoo.com/group/LRK-torquemax/lst
· stator glueing and insulation: (G)
http://home.t-online.de/home/GHagerBI/homep1.htm
· mini-LRK drawings (S400 replacement), tests: (G)
http://martin.muennich.bei.t-online.de
· winding/wire diameter/prop calculation tool, canard delta: (G&E)
http://www.geocities.com/roman65536/fly/LRK.html
· LRK 'inrunner' from old hard-disk: (E)
http://www.cenara.com/users/ce00359/LRK220.htm
· LRK for slow-fly & piccolo helicopter:
http://www.online-club.de/~rp10337 (G)
http://www.kc-world.de/miniLRK.htm (G)
http://mitglied.lycos.de/hestoeck/
http://home.t-online.de/home/e-huber/BL/BLEigen.html
http://hometown.aol.de/GerhardWurtz/
· LRK 430/30, 43mm diam. / 30mm long stator
http://ch.baron.bei.t-online.de/ (G)
· pole-magnet combinations:
http://members.aol.com/renderwahn/Bild/Start.html
******** Material suppliers ********
Magnets must have at least a 1.1Tesla fieldstrength!
· (USA) Magnets:
http://www.buntingmagnetics.com/
http://www.leevalley.com
http://www.wondermagnet.com/dev/magnets.html
· Stator material, magnets, turned parts, shafts, ball-bearings, wire,
kits & complete motors and a very good downloadable construction/assembly
manual:
http://www.torcman.de (G & E).
· Stator material, magnets, turned parts, shafts, ball-bearings, wire,
kits, assembly tools, complete motors:
http://www.flyware.de Soon in English too.
· Stator material, magnets: (G)
http://www.batt-mann.de/#torque
· List of magnet suppliers: (E)
http://www.magnetweb.com/magamer.htm
Diy brushless controller
While on the subject of diy: Jo Aichinger from Austria has three versions
of his do-it-yourself brushless Speedy-BL controller: SBL-classic,
SBL-mini and SBL-sprint. These controllers work fine with LRK-torquemax
motors, but other makes are also suited, albeit some better than others.
Manufacturers are in the process of adapting the software for the high
pole count LRK's. The SBL-sprint has separate powerboards. Jo can supply
the printed circuit board and programmed microprocessors.
http://www.geocities.com/SouthBeach/Port/1592/speedybl.htm
The information is German only for now (classic also in English), but the
tables speak for themselves. If you don't want to hunt for components, buy
it as a kit or ready-made:
http://www.megra-elektronik.de
Speedy-BL ESC construction pictures:
http://werner.roemer.bei.t-online.de/modellbau/regler/inhalt.html
Enough to read for now I think ;-)
********************************************************
Met vriendelijke groet ;-) , Ron van Sommeren, Nijmegen, the Netherland
Pål Stavn
http://www.rcgroups.com/forums/showthread.php?s=&threadid=34755
Her bør du finne mang linker videre
Det har vært mange som har bygget om CD-rom motorer med hell
og det har vært mange diskusjoner på E-flight listen i vinter.
Ta et søk på arkivet her
http://muffin.indexdata.dk/elist/
Jeg skal se hva vi kan få til i neste nummer av MI
Pål
MI-elektro
Ron van Sommeren
You have some reading to do. But first a message from our sponsors ;-) The
homebuilt e-motor mailing list:
www.yahoogroups.com/group/lrk-torquemax
Click 'Join' in righthand column to subscribe.
Here are some threads and messages about converting CD-ROM motors
http://groups.yahoo.com/group/lrk-torquemax/message/598
http://groups.yahoo.com/group/lrk-torquemax/message/611
Finnish site, pictures, brilliant ideas:
http://groups.yahoo.com/group/lrk-torquemax/message/673
Short translation of Finnish text:
http://groups.yahoo.com/group/lrk-torquemax/message/683
A discussion compiled from the eflight mailing list:
http://groups.yahoo.com/group/lrk-torquemax/message/539
There's more CD-ROM stuff in the lrk groups forum, use the 'archive'
function at bottom of homepage. I'm the moderator of the lrk-torquemax
mailing list.
CD-ROM threads in Ezone's forum:
www.rcgroups.com/forums/showthread.php?s=&threadid=44427
http://www.rcgroups.com/forums/showthread.php?s=&threadid=47615
The next one is a long one, I suggest you read the last pages first before
starting at the beginning:
www.rcgroups.com/forums/showthread.php?s=&threadid=37545
www.ikarus-modellbau.de/ubb/ultimatebb.php?ubb=get_topic;f=1;t=007156
http://www.eaglequest.com/~pgoelz/piccolo_brushless.html
German threads, should not be a problem for Norwegians I guess, jeg
snakker lit, lit Norsk akso ;-):
www.rclineforum.de/cgi-bin/YaBB.pl?board=PICCOLO&action=display&num=8282
www.rclineforum.de/cgi-bin/YaBB.pl?board=PICCOLO&action=display&num=9537
www.rclineforum.de/cgi-bin/YaBB.pl?board=PICCOLO&action=display&num=9617
www.rclineforum.de/cgi-bin/YaBB.pl?board=elektro&action=display&num=11613
www.rcline.de/elektromotoren/elektromotoren.html
Met vriendelijke groet / med venlig hilsen
Ron van Sommeren
near Nijmegen, the Netherlands
"Asbjørn Husebø" <asbjo...@chello.no> wrote in message
news:zZIP8.666$8X5....@news01.chello.no...
Ron van Sommeren
>
> Takk, men jeg kan ikke finne den...
news:rec.models.rc.air
news:rec.models.rc.soaring
news:uk.rec.models.radio-control.air
"Asbjørn Husebø" <asbjo...@chello.no> wrote in message
news:hYNP8.720$8X5....@news01.chello.no...
> "Tom Ivar Helbekkmo" <tih...@CatchCom.no> skrev i melding
> news:86d6uol...@athene.i.eunet.no...
>
> Asbjørn
>
>
Carsten A. Arnholm
mht. elektronikk), og som kanskje kunne tenke seg å prøve å benytte en
CD-rom motor til forskjellige ting (ikke fly):
Jeg har et par gamle CD-ROM spillere liggende. Hvis jeg tar ut motoren, må
jeg bruke noen form for elektronikk for å få motoren til å virke, eller kan
en bare koble på likestrøm (i så fall hvilken spenning?) ?
Bildet på
http://www.rcgroups.com/forums/showthread.php?s=&threadid=37545
viser ikke noen elektronikk.
Ok, dette var sikkert et idiotisk spørsmål. Flame ivei..... :-)
--
Carsten A. Arnholm
arn...@online.no
http://home.online.no/~arnholm/
Jo Grini
(3-fase strøm)
--
Hilsen Jojo
Har du husket lodd i lotteriet ?
<http://f3j.no/2002/raffle>
Jo Grini
Sagbråtenfeltet
2910 Aurdal
Norway
Tlf: +47 61361606 / +47 95292002
Fax: +47 85027810
<http://home.online.no/~jgrini/>
"Carsten A. Arnholm" <arn...@online.no> skrev i melding
news:E6mQ8.73$Q12....@news4.ulv.nextra.no...