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Feb 02, 2006, 12:14 PM
Registered User
eaticus's Avatar
Discussion

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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Feb 02, 2006, 01:17 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
More tricks for inrunners, by MGM and Christian Lucas :
https://www.rcgroups.com/forums/show...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/

https://www.rcgroups.com/forums/showthread.php?t=151285
https://www.rcgroups.com/forums/show...hreadid=168528
https://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:
https://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
Feb 02, 2006, 02:17 PM
Registered User
eaticus's Avatar
Ron,
Wow... Thank you! Looks like I've got a lot of reading to do...

Dave
Feb 02, 2006, 05:23 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Especially the pictures on Thomas Asschenbrenner's site.
Feb 02, 2006, 08:30 PM
Registered User
eaticus's Avatar
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
Last edited by eaticus; Feb 02, 2006 at 10:40 PM. Reason: Adding additional questions
Feb 03, 2006, 10:02 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
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
Feb 03, 2006, 10:26 AM
Registered User
eaticus's Avatar
Ron,
Thank you! I'll be catching up all all the readings that you have suggested!

Dave
Feb 03, 2006, 10:43 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
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
Feb 03, 2006, 11:00 AM
Registered User
eaticus's Avatar
Ron,
The intent of my application is high-powered EDF. I added a post on the EDF side for outrunners.

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

Thanks!

Dave
Feb 06, 2006, 10:16 PM
Proud to be a Belgian.
rafgol's Avatar
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.
Feb 07, 2006, 02:43 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thanks Raf, I mixed the two, twice
Dec 23, 2009, 10:39 AM
Registered User
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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