Search: Posts Made By: ron_van_sommeren
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06-17-2014, 08:15 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

Chamfer (bevel? what's the difference?) the edges...

Chamfer (bevel? what's the difference?) the edges with a file a bit before winding.
06-10-2014, 02:30 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

BK3VGX87X_Y More SLS videos ...

BK3VGX87X_Y
More SLS videos
www.sinusleistungssteller.de/projekte.html

Although RC Permanent Magnet Brushless motors (PM BLDC) can be driven by AC and VFD's, RC ESC's are not variable frequency...
06-08-2014, 01:23 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

Kv, in rpm per volt, and Kt, in newton per...

Kv, in rpm per volt, and Kt, in newton per ampère, voltage respectively torque Konstant.
Kt = 1 / Kv, in units for grown-ups, i.e.SI units, not imperial units.

See also Joachim Bergmeyer's...
06-07-2014, 09:59 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

On the other hand, it can be advantageous to keep...

On the other hand, it can be advantageous to keep some open space for cooling air to pass through, because better cooling is also good for power/weigth ratio. So there can be a trade off.

E.g....
06-07-2014, 08:47 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

Denny, keep in mind, and spread the word ... ...

Denny, keep in mind, and spread the word ...
The Kv constant (motors have just one Kv, not 180Kv), is not a rating, not a figure of merit. More windings will give lower Kv, less windings will give...
06-06-2014, 06:49 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

Efficiency governs power/weight ratio. Higher...

Efficiency governs power/weight ratio.
Higher efficiency does not only mean that the motor makes better use of the batteries' power, it also means the motor is able to handle a higher power input...
02-07-2008, 03:05 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

In a good design, they are roughly the same. ...

In a good design, they are roughly the same.

Vriendelijke groeten ;) Ron
02-07-2008, 03:00 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

Always glad to be of service :D Vriendelijke...

Always glad to be of service :D

Vriendelijke groeten ;) Ron
02-06-2008, 06:21 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

Contrary to copper losses, in the case of eddy...

Contrary to copper losses, in the case of eddy currents, the higher the (specific) resistance of the material, the better. See this 'lamination thickness versus edddy currents' thread:...
02-06-2008, 06:08 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

Copperlosses (wire resistance) are together with...

Copperlosses (wire resistance) are together with iron-losses (hysteris and eddy current losses in magnets, flux ring and stator) the main source of losses/heat.

Vriendelijke groeten ;) Ron
02-06-2008, 06:02 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

... but first you have to figure out the number...

... but first you have to figure out the number of winds of course. The thicker the wire, the higher the motor efficiency. Higher efficiency does not only mean that the motor makes better use of the...
02-06-2008, 11:48 AM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

A list of outrunner manufacturers. Kit/parts...

A list of outrunner manufacturers. Kit/parts suppliers are marked with a '*':
http://www.rclineforum.de/forum/thread.php?threadid=43664


Unfortunately, I cannot edit the first post anymore (too...
06-25-2007, 09:33 PM
Replies: 72
Views: 22,660
Posted By ron_van_sommeren

Excellent motorbuilding articles by Brian...

Excellent motorbuilding articles by Brian Mulder,they cover the all the basics, a must read:
http://www.southernsoaringclub.org.za/
-> Articles by SouthEasterners.
-> Electric Motors - part 1-5
...
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