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Old 08-28-2012, 04:41 AM   #1
celticflyer
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Default 2.4 mhz low voltage problems

http://www.wattflyer.com/forums/showthread.php?t=67821#
Please check this thread link concerning 2.4 voltage problem.
I have an EMAX BUDGET 50 AMP. My motor is drawing 36 amps at full throttle. I use 3cell 2200 mah 30c batteries.
There seems to be some warning of using linear esc/bec on more than 2 cell batteries. Any thoughts on this subject and or setup?

John
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Old 08-28-2012, 02:09 PM   #2
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According this EMAX manual, a 50amp EMAX ESC can handle 2-3 LIPO cell batteries.

http://www.tedani.com/docs/emax-esc-v2-manual.pdf

One does need to worry how many amps your total number of servos are
drawing verses the number of amps the BEC in the ESC can safely provide.
I always try to buy ESC's that have a 3 amp BEC unless I am only going
to be using 2 servos in the plane the ESC is intended for.

I thought I was high enough ...........
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Old 08-28-2012, 02:34 PM   #3
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OK......... after reading the article you referenced in your post, should have
read it all the way through the first time, I can only provide the following
information, take it or leave it.

I ONLY use 2.4GHZ on all my models, Spectrum Tx to be specific, and I have a mixture of Spectrum brand Rx's and the "Orange box" from HK,
and UMX BNFs from different manufactures. Also ESCs from EMAX,
PowerUp, Turnigy etc. etc. All my park fliers use 3 cell LIPOs and for
some odd reason use 2200mah and/or 1300mah size.

I have NEVER had any problems with low voltage or brown out or whatever.

I just MAKE SURE my low voltage cutoff setting on all the ESC's are around 3.8 volts or above for the systems where I can set the LVC,
AND I also set the timer on my Tx for at least a minute below where
the ESC starts to lower the voltage because the system is nearing LVC,
this timer setting was done by timing the flights for a while and then
setting the Tx. Also as mentioned in the previous post, I make sure my
ESCs have a BEC that is at least 3 amps, unless I am buying a kit where
all the electronics come with it.

Bob

I thought I was high enough ...........
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