preventing sparking when connecting battery and controller

http://mgm-compro.com/
-> Tech info
-> How to prevent sparking ,,,

Gelukkig Kerstmis en een zalig Nieuwjaar Ron
• brushless motor building tips & tricks • diy brushless motor discussion group
• Drive Calculator download & discussion group • int. electric fly-in, Nijmegen, the Netherlands

That is really clever! Very simple, but clever non the less. That's basically how a standard softstart circuit works, but I never considered such a straight forward approach.

More pictures in this thread:
http://www.rc-network.de/forum/showthread.php?p=584220#post584220

The pictures speak for themselves but you can use e.g. http://babelfish.altavista.com for automatic translation. Not perfect but that's no problem for "context restricted techno-geek-speak".

Vriendelijke groeten Ron

Hey

Can anyone specify at 100v & 133v what resistor would be best to use.

-steveo

'No spark' resistance calculator
http://scriptasylum.com/rc_speed/_nospark.html

Another solution, in the read battery wire to the left. Described by Lucien Miller (http://www.innov8tivedesigns.com) in this post:
http://www.rcgroups.com/forums/showthread.php?p=11190082#post11190082