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Old Feb 02, 2006, 12:14 PM
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eaticus's Avatar
Everett, WA
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How do you build an inrunner brushless motor?

Hi,
Have anyone tried to wire an in-runner motor similar to the description as described in the "Ammo" Series motor?

http://www.electrifly.com/motors/gpmg5000.html

I would like to try it but not sure how to do it ...

Dave
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Old Feb 02, 2006, 01:17 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
The Netherlands, GE, Nijmegen
Joined Feb 2001
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More tricks for inrunners, by MGM and Christian Lucas :
http://www.rcgroups.com/forums/showt...17#post2003817

Thomas' diy inrunner homepage, some very special coils (the same as the ones
used in www.hb-motoren.de)
http://home.vrweb.de/thomas_aschenbrenner/

http://www.rcgroups.com/forums/showthread.php?t=151285
http://www.rcgroups.com/forums/showt...hreadid=168528
http://www.rcgroups.com/forums/showthread.php?t=70373

http://goldeneye.ethz.ch/motoren/ele...unner/index_EN
http://goldeneye.ethz.ch/motoren/electric/inrunner/

http://www.excite.co.jp/world/englis...co=excitejapan
http://www.excite.co.jp/world/englis...co=excitejapan
http://www.excite.co.jp/world/englis...co=excitejapan

http://www.ppi.se/cjo/Slotless1.htm (decent Swedish pictures ;-)

A discussion about diy slotless inrunners, contributions by a.o. Christian
Lucas, Helmut Schenk and Thomas Asschenbrenner:
http://www.rclineforum.de/forum/thre...threadid=89559



Do-it-yourself motor homepages, manuals/tutorials, checks and tests in the first message of this motor builders tips and tricks thread. The checks and tests may save you from frying your controller or motor. Thread is active, bookmark it for future refence and subscribe to it:
http://www.rcgroups.com/forums/showthread.php?t=240993


Vriendelijke groeten Ron
diy outrunner discussion group
int. E fly-in & diy outrunner meet, June 25 2006, Nijmegen, the Netherlands
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Old Feb 02, 2006, 02:17 PM
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Everett, WA
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Ron,
Wow... Thank you! Looks like I've got a lot of reading to do...

Dave
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Old Feb 02, 2006, 05:23 PM
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Ron van Sommeren's Avatar
The Netherlands, GE, Nijmegen
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Especially the pictures on Thomas Asschenbrenner's site.
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Old Feb 02, 2006, 08:30 PM
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Everett, WA
Joined Aug 2002
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Ron,
Looking at Thomas Asschenbrenner's site, I assume that the required 6 sets of coils will be staggered at 60 degrees apart?

Is there a relationship between the width of the magnets and the width (arc length) of the coil?

Can the design shown in the website http://www.ppi.se/cjo/Slotless1.htm considered to be slotless? This appears to be the easiest way of constructing the motor?

Dave
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Last edited by eaticus; Feb 02, 2006 at 10:40 PM. Reason: Adding additional questions
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Old Feb 03, 2006, 10:02 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
The Netherlands, GE, Nijmegen
Joined Feb 2001
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Oops, http://www.ppi.se/cjo/Slotless1.htm is not a slotless motor, it's an lrk inrunner.

I'm not familiar with inrunners but it seems logical to space the coils evenly.

In outrunners the magnet coverage should be in the range of 80-85% but this is not critical.

Prettig weekend Ron
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Old Feb 03, 2006, 10:26 AM
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Ron,
Thank you! I'll be catching up all all the readings that you have suggested!

Dave
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Old Feb 03, 2006, 10:43 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
The Netherlands, GE, Nijmegen
Joined Feb 2001
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Quote:
Originally Posted by Ron van Sommeren
Oops, url]http://www.ppi.se/cjo/Slotless1.htm[/url] is not a slotless motor, it's an lrk inrunner...
Oops again, I mixed up two of Christian Johansson's motors in my head, it is a slotless motor.

Prettig weekend Ron
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Old Feb 03, 2006, 11:00 AM
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Everett, WA
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Ron,
The intent of my application is high-powered EDF. I added a post on the EDF side for outrunners.

http://www.rcgroups.com/forums/showthread.php?t=473790

Thanks!

Dave
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Old Feb 06, 2006, 10:16 PM
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Joined Jul 2004
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Quote:
Originally Posted by Ron van Sommeren
Oops, http://www.ppi.se/cjo/Slotless1.htm is not a slotless motor, it's an lrk inrunner.

I'm not familiar with inrunners but it seems logical to space the coils evenly.

In outrunners the magnet coverage should be in the range of 80-85% but this is not critical.

Prettig weekend Ron
I think you meant this link Ron..., the intended LRK inrunner.

http://www.ppi.se/cjo/LRK220/LRK220.htm

Gij zijdet welghecomen, Ron.
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Old Feb 07, 2006, 02:43 PM
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Ron van Sommeren's Avatar
The Netherlands, GE, Nijmegen
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Thanks Raf, I mixed the two, twice
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Old Dec 23, 2009, 10:39 AM
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Joined Jun 2007
153 Posts
Guys,
I'm not the this thread starter but my ques is curiosity is similar. Here, the question was about inrunner not the outrunner. I see there are lots of URL on building on outrunner. Anyone can tell how to rewind inrunner? I need get my custom KV from a factory made inrunner.
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