ChopperAddict's Hints & Tips



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INFORMATION - Warning about using Digital servos with some ESC's

Although many people do not realize this, the act of fitting digital servos to your helicopter in place of the more common analog servos can cause other problems.

The most important one of these is that most ESC's do mention in their instructions that they cannot provide the power required by the digital servos if using their own internal (non switchable) BEC (Battery Eliminator Circuit), which is the most common form of BEC used by most ESC's.

What you need to do is to check what voltage is recommended for your digital servos, and then obtain a separate switchable BEC that can provide that for the number of servos you need to drive.

These separate BEC's are freely available, and typical cost a few pounds only.

To fit them in most cases (but maybe not all) all you need to do is to cut the original RED wire that goes from the ESC to the receiver, then use that to connect to the BEC, and use the connector from the BEC to go to the Receiver.

There is a very good video on doing just this step by step provided by Finless Bob on the Helifreak web site in the States. (To access these videos you may need to open an account on the Helifreak forum)

CLICK HERE to visit Finless Bob's list of tutorial videos.

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