|Feb 02, 2013, 11:39 PM|
645 MG Servos
Ok I was told that Im asking for trouble With the 645mg servos with a 5 cell NIMH battery, because when charged up, and when I get to the flying field, my voltages are around 6.75 volts. The Hitec specs are given for 4.8 and 6v. So am I over a safe voltage for these servos? Should I be running a BEC or like a BATshare unit?
|Feb 03, 2013, 12:54 AM|
Joined Aug 2002
= Nominal voltages of standard 4 and 5 cell NiMH/NiCD battery packs, refer:
. Servo - Operating Voltage Range - (Hitec) usage with NiMH, Lipol & A123 batteries.
A 5 cell NiMH battery could be a problem if high capacity AA cells above say 1500 MAh as they do not
withstand the current draw of several 645MG servo and become the frequent cause of jitters.
Users may resort to/ recommend a 5V 10A switchmode regulator to reduce voltage thus reduce the higher
current draw which their battery packs could not otherwise withstand.
The higher the voltage, the higher the current draw and faster wear & tear on the servo.
. Dual Batteries - Multiple Batteries may be installed for redundancy or even one for each servo.
Much more information available e.g.
. Servo - FAQ : Metal Gear Servos - DIY Repair & Extend MG Servo Gear Life
under sub sections
"Battery Care, Performance & DIY Battery Packs."
"Glitches & Jitter in Receiver, Servo & ESC - Causes and Cures"
"Radio Systems, Accessories, Alterations and FAQ" at
Alan's Hobby, Model & RC FAQ Web Links
|Thread||Thread Starter||Forum||Replies||Last Post|
|Found hitec 645 mg servos||helicopterdr||Aircraft - General - Radio Equipment (FS/W)||0||Jan 13, 2013 05:15 PM|
|Wanted Hitec 645 mg||cmebe4||Aircraft - General - Radio Equipment (FS/W)||2||Jan 09, 2013 12:32 AM|
|Sold Hitec MG Servos (2 x 645 MG/3 x 625MG)||purcilas||Aircraft - General - Radio Equipment (FS/W)||5||May 09, 2012 09:46 PM|
|Sold Hitec servo 4 x 645 mg, 1 x 5645 MG and 1 x 985 MG||tiju000||Aircraft - General - Radio Equipment (FS/W)||1||Oct 22, 2010 01:31 AM|
|For Sale 4 servos hitec hs 645 mg||Benji||Aircraft - General - Radio Equipment (FS/W)||1||Oct 05, 2006 09:06 PM|