Peters LRK Site
this is History Page,
more actuall information
and ready-to-fly engines in 9 different sizes
ranging from 50 to 2000 watts
you'll find at:
who is interested in ?
The million dollar question: PCM or PPM ?
Hello LRK fan,
To have landed here, you must
already know what an LRK is - an good outside runner motor, which
can run medium to large propeller without any need for gear.
You can even build the motor yourself. There are a number of
internet sites which describe several variations on this motor.
This page is intended to deepen your understanding of the theoretical
basis of the concept and to describe the necessary construction
techniques. It also offers you simple design techniques for determining
the windings number and propeller adjustments. Finally, it opens
Ludwig Retzbach's publication to a broad public at his request.
To keep the download-pagecount manageable, the article was not
simply scanned in. Instead it was carefully translated into HTML.
The initial report about the LRK350-20 has grown into a central
Note: under construction
means most often, that the English version isn't ready yet. However
you can try to read the original page in German.
Quite new! Pictures from the Workshop
References on the LRK
Ludwig Retbach's articles
on LRK from German periodic "elektroModell"
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