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On a full house sailplane (3m) you will use
300-600mA in 1 hour of normal sloping.
It is deppendant on the control surfaces size.
In DS the numbers will double up.
The Graupner DS368 (probably the same servo) will
stall at 0,7A and draw 1,1A when moving at full power.
So 6 servos will stall at above 4A
Still this is not enough to drain you battery on
your small flights.
Your problem is probably that the battery was not
fully charged or it had drained in some way (or is faulty).
Try leaving you model/system on for an hour and
meassure the voltage. It should still read above 5v... Othervise a cell might be
faulty.
From: George Gillburg <[EMAIL PROTECTED]>
Date: Tue Jan 4, 2005 6:59 am
Subject: [RCSE] Typical current drain
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What do you think the average current drain of a full house (six
servo)
system is? The reason I ask is this: Saturday, I crashed the
Slegers
Condor I've been flying for the last 5 or 6 years. I was coming
in on
final approach, removed camber from the wing and the ship nosed
straight
in. When I checked the battery voltage, my receiver pack read
4.1v.
This was the third flight of the day and both previous flights
had been
around 3 minutes each. Battery is a 800 mah nicad that had
been freshly
charged in the morning. I thought the battery had gone bad
but I cycled
it twice on Saturday & Sunday and got 811 mah &
831 mah on a Sirius
Super Test, so I would think the battery is OK.
I've checked the
current draw and I get and idle current varying from
60 to 200 plus ma
and a full draw current (stirring the sticks to move
all controls at the
same time) of around 1300 ma. The airplane is
equipped with a JR
NER226X receiver, 5 JR 351 servos and one JR 368
servo. No one servo
seemed to increase drain any more than others. Do
these drain figures
seem
excessive?
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