All servos on 6 v??
10-02-2002, 08:52 PM
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All servos on 6 v??
The RX shouldn't be exposed to more thn a nominal 6.0 v. If going to the 6 cell 7.2 v pack, you have to isolate the RX from the high voltage and supply it either through a regulator or a split power system. (which can be done with a bussboard and some simple wire soldering.)
I've done the simple split power system for powering secondary, high load systems. The result is the high load systems CAN'T drain the RX pack at all. Its a simple thing to do. In an extension, clip the red lead (Futaba... ). The red lead from RX toward servo, tape off. Then solder in a batter connetion to the red and black leading to the servo. This battery lead will now power the servo. The white signal wire and black wire remain continuous between RX and servo, so the signal goes through normally. (Retracts SNAP up FAST on 7.2 v. or you can power them with 3 high capacity cells for slow, reliable function.)
Its rather unusual to do the split for more than one or two channels, and then only for things like retracts, which don't affect aircraft control, but which could drain the RX battery quickly if any binding occurred. When wanting to give high voltage to primary control servos, an optical isolator and voltage regulator system is advisable.
I've done the simple split power system for powering secondary, high load systems. The result is the high load systems CAN'T drain the RX pack at all. Its a simple thing to do. In an extension, clip the red lead (Futaba... ). The red lead from RX toward servo, tape off. Then solder in a batter connetion to the red and black leading to the servo. This battery lead will now power the servo. The white signal wire and black wire remain continuous between RX and servo, so the signal goes through normally. (Retracts SNAP up FAST on 7.2 v. or you can power them with 3 high capacity cells for slow, reliable function.)
Its rather unusual to do the split for more than one or two channels, and then only for things like retracts, which don't affect aircraft control, but which could drain the RX battery quickly if any binding occurred. When wanting to give high voltage to primary control servos, an optical isolator and voltage regulator system is advisable.
