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BrianG · 11.22.2010, 11:19 AM

On a regular MM, I would run an external BEC on anything over 2s lipo. This is because it has a linear BEC and can't deliver much current without overheating with a high differential voltage.

The only reason the MMPro needs an external BEC is because it seems a bit weak. It has a switching BEC just like the external ones, but as Arct1k stated, the MMPro bec tends to have trouble with more powerful/faster servos.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	11.22.2010, 11:19 AM On a regular MM, I would run an external BEC on anything over 2s lipo. This is because it has a linear BEC and can't deliver much current without overheating with a high differential voltage. The only reason the MMPro needs an external BEC is because it seems a bit weak. It has a switching BEC just like the external ones, but as Arct1k stated, the MMPro bec tends to have trouble with more powerful/faster servos.