<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	>
<channel>
	<title>Comments on: A new, faster RMG</title>
	<atom:link href="http://www.anderswallin.net/2006/11/a-new-faster-rmg/feed/" rel="self" type="application/rss+xml" />
	<link>http://www.anderswallin.net/2006/11/a-new-faster-rmg/</link>
	<description></description>
	<pubDate>Thu, 20 Nov 2008 21:10:04 +0000</pubDate>
	<generator>http://wordpress.org/?v=2.6.3</generator>
		<item>
		<title>By: Anders</title>
		<link>http://www.anderswallin.net/2006/11/a-new-faster-rmg/#comment-1898</link>
		<dc:creator>Anders</dc:creator>
		<pubDate>Sat, 11 Nov 2006 10:18:29 +0000</pubDate>
		<guid isPermaLink="false">http://www.anderswallin.net/2006/11/a-new-faster-rmg/#comment-1898</guid>
		<description>Rob emailed me with some further comments.

The current RMG uses a Mabuchi RC280 motor. Thew new motors are by Graupner and there are two versions: speed 280, and speed 280 Race (the one I got on my new winches).
Rob also sent some test results:
Motor                    max torque    max speed    max output power
speed 280             15.4 kg.cm     3.6 rps         8.4 Watts
speed 280 Race     15.9 kg.cm     4.4 rps         10.7 Watts 

This should be compared to measurements on a Hitec 5745 and an old Whirlwind which indicate that their output power is roughly 3.1 and 1.5 Watts respectively. The standard RMG 280D motor power is 8.4 Watts.

In terms of speed the Hitec 5745 does 140 degrees of rotation on about 0.35 seconds. An RMG (Race motor) using a 42mm drum will do 300mm of sheet travel in 0.52 seconds. These figures were measured at 6 Volts.

Production RMG winches with the new motors will be for sale when Rob has sorted out availability of the new motors.

I'd like to stress that these are Rob's preliminary measurements - if I find time to do some testing it would be nice to repeat these tests.

Anders</description>
		<content:encoded><![CDATA[<p>Rob emailed me with some further comments.</p>
<p>The current RMG uses a Mabuchi RC280 motor. Thew new motors are by Graupner and there are two versions: speed 280, and speed 280 Race (the one I got on my new winches).<br />
Rob also sent some test results:<br />
Motor                    max torque    max speed    max output power<br />
speed 280             15.4 kg.cm     3.6 rps         8.4 Watts<br />
speed 280 Race     15.9 kg.cm     4.4 rps         10.7 Watts </p>
<p>This should be compared to measurements on a Hitec 5745 and an old Whirlwind which indicate that their output power is roughly 3.1 and 1.5 Watts respectively. The standard RMG 280D motor power is 8.4 Watts.</p>
<p>In terms of speed the Hitec 5745 does 140 degrees of rotation on about 0.35 seconds. An RMG (Race motor) using a 42mm drum will do 300mm of sheet travel in 0.52 seconds. These figures were measured at 6 Volts.</p>
<p>Production RMG winches with the new motors will be for sale when Rob has sorted out availability of the new motors.</p>
<p>I&#8217;d like to stress that these are Rob&#8217;s preliminary measurements - if I find time to do some testing it would be nice to repeat these tests.</p>
<p>Anders</p>
]]></content:encoded>
	</item>
</channel>
</rss>
