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Jul 15, 2005, 09:29 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP

lovely outrunners


A lovely diy outrunner, made by Holger Lambertus from Germany. The
hammerheads are in contact with the frontplate, could even give better
statorcooling.
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Jul 15, 2005, 09:31 PM
Hey y'all... watch this!
Rex A Lott's Avatar
Keine Photo?
Jul 15, 2005, 09:34 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP
This motor is not a diy motor, the 'Somodini', available from www.lipoly.de
More pictures
http://www.lipoly.de/modellbau/motor...0_8/index.html

.
Last edited by Ron van Sommeren; Jul 16, 2005 at 05:19 AM.
Jul 15, 2005, 09:34 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP
Quote:
Originally Posted by Rex A Lott
Keine Photo?
Patience, grasshopper
Jul 15, 2005, 09:58 PM
Good Better Best quest.
olmod's Avatar

They shore are


beauts, that 'Somodini' shaft to hub lock and the flux ring frontplate fitting are super. the first motor is using a hollow shaft wich apart from making it stronger and lighter,lends itself to other applications my compiments to their builder designers.
Jul 15, 2005, 10:13 PM
myk
myk
Registered User
myk's Avatar
Quote:
Originally Posted by olmod
beauts, that 'Somodini' shaft to hub lock and the flux ring frontplate fitting are super. the first motor is using a hollow shaft wich apart from making it stronger and lighter,lends itself to other applications my compiments to their builder designers.
Hollow shaft will be lighter but not stronger.

Mike
Jul 15, 2005, 10:23 PM
Good Better Best quest.
olmod's Avatar
correct,for a given diameter,but i took it that it is larger than the norm.
Jul 16, 2005, 12:04 AM
3D printed member
stumax's Avatar
Quote:
Originally Posted by Ron van Sommeren
A lovely diy outrunner, made by Holger Lambertus from Germany. The
hammerheads are in contact with the frontplate, could even give better
statorcooling.

If the front plate is aluminium, shouldn't it be kept magnetically isolated from the stator to reduce induction heating? Lovely looking motors, just the same.

Stu.
Jul 16, 2005, 05:18 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP
Aluminium is air as far as magnetism is concerned, it's easier for the magnetic flux to flow through the stator. Therefore no magnetic field in the alu or maybe some stray field.

Vriendelijke groeten Ron van Sommeren
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diy outrunner discussion group
int. E fly-in & diy outrunner meet, August 28th, Nijmegen, the Netherlands
Jul 16, 2005, 06:45 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP
Sandblasting was used for the alu finish using a cheap sand blaster.
Last edited by Ron van Sommeren; Jul 16, 2005 at 06:55 AM.
Jul 16, 2005, 07:24 AM
3D printed member
stumax's Avatar
But the alternating field will induce heat in the aluminium, that's how induction furnaces work.

Stu.
Jul 16, 2005, 09:21 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP
Most, if not all of the field, is in the stator. Magnetic field lines are lazy buggers, they prefer iron over steel, easier for them. If it were coils without an iron core, it would be the way you described.
Jul 16, 2005, 10:39 AM
Chillin till SEFF
bildo baggins's Avatar
Looks nice Ron. How about some perf figures? Props, application etc.
Jul 17, 2005, 06:58 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Thread OP
For the 'Somodini' have a look at www.lipoly.de
http://www.lipoly.de/xaranshop_k008013s001_1.html
Measurements:
http://www.lipoly.de/modellbau/motor...messwerte.html

The other one, in my first post, is a diy motor made by Holger Lambertus from Germany, no figures I'm afraid.

Vriendelijke groeten Ron


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