[ARC5] Dynamotor Regulation

[Cliff Miller]

Have we clarified if we're talking about just a receiver or a
receiver-transmitter system?  I have no experience with the dynamotor on
the modulator for the transmitter so I can only speak to using the receiver
dynamotors, which is smaller.
I have successfully used 2-12V gel-cell batteries of 7A-h or more capacity,
series-connected, to start the receiver dynamotors.  I've also used my
13.8V 25A ham power supply and a 12V gel-cell to run them / no problem.

The RC folks have pioneered the use of two 12V computer server power
supplies, series-connected, to charge 24V model airplane batteries.  These
are readily available in high current values since the server people just
install new ones periodically because failure-is-not-an-option, etc.  The
negative side is shorted to ground so you have to separate that on one of
the supplies if you're going to connect them into 24V.  Lots of details on
using these on some of the RC forums.

I bought two of these to experiment but have yet to try them.

Of course, eBay is your friend with various 24-28V high current power
supplies available just about all the time.  I tried the server units since
they're cheap (two for 15 bucks plus shipping).


73 Cliff W4HGR
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