Best battery choice? + Current Draw used per flight

[Henderson,Eric]

When you get a change like this I would suspect a pot or two needs replacing. Bad pots on digital servos have given me an Amp draw before now. 

The engine shakes everything indiscriminately and, as such, does not tell you which servo is bad. An easy test is to turn on the system, TX and all. Then apply a vibration source to each control horn. I used a palm sander with no sandpaper. Just touch the horns and watch the draw. (It's usually the right aileron servo).

Regards,

Eric.

-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Kenneth Blackwell
Sent: Monday, April 14, 2003 10:21 AM
To: discussion at nsrca.org
Subject: Re: Best battery choice? + Current Draw used per flight


Brian, you didn't say what type engine/mount that you are using.....???

The source of your high current draw with the engine running could be
directed at the mount. When more vibration is transferred to the airframe
through inadequate isolation/damping the current draw can really increase
dramatically.

Ken B.

-------------------------------------------------------
Brian Young <b4598070 at yahoo.com> wrote:
I found I wasnt getting the capacity I thought I
should w/ my 1800 mah 6 cell flight pack. After two
masters sequences I recharged and put back in 600mah
(triton charger), pack was topped up prior to flight.

So back home, I put a current meter between the
battery and receiver. I draw about 90 mA with all
servos connected, each servo unplugged the total drops
by 15 mA, except for the throttle which drops 10 mA.
Wiggle the sticks and I can occasionally get over 300
mah. This didnt seem unusual to me, anyone disagree?

So I left the meter in place and started the plane, at
idle the meter was reading 3 Amps, yep 3. Has anyone
else done this?

I move the trottle off idle a little and the current
drops to about 2-2.5 Amps, so my throttle servo is
bottoming a bit.

3 Amps in this gauge wire seems like it should be
getting something hot, but I hooked the multimet Yahoo! Tax Center - File
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