Archive of the Yahoo! Groups mailing list for the Bug hand-launch glider 2002-2018

From: "Ron van Sommeren <nadina.berzina@...>" <nadina.berzina@...>
Date: Friday, December 13, 2002 8:55 PM
Subject: do-it-yourself high-torque, no-gearbox 20Watt-2kW brushless motors
Hi all, A site and a discussion group about do-it-yourself high-torque/no- gearbox brushless motors: http://www.yahoogroups.com/group/lrk-torquemax On that site you'll find a FAQ and links. The motors built to date, range from slow-flight to 2kW. A simple lathe will do. The lrk principle features a high torque at low rpm, compared to conventional brushless motors. There is no need for a gearbox, which means less weight, less $$$'s, no losses, no whining and no wear. The motor can swing a bigger prop, resulting in an even higher overall system efficiency. The builder can tailor the motor to the application by adapting the number of windings. Outrunners are inside-out motors, the coils are stationary, housing and magnets rotate. This has the additional benefit of good magnet cooling and the coils are not stressed by centrifugal forces. I'm the lrk mailing list's monitor. Met vriendelijke groet ;-) Ron van Sommeren near Nijmegen, the Netherlands