ESC arrived today so need to work a way to mount it. Disappointed in the built in 5A BEC, with the Spektrum RX and Turnigy 8166 Servo it browns out even with a receiver cap fitted and before I have connected any of the linkages to the servo horn.
Will probably sub in a receiver pack for now, but for a $250-$300 esc, it's a bit of a bummer! Hoping it's not a faulty as with the 2 weeks to ship back to USA, stated 4 week lead time on Castle site and 2 weeks to ship back..... well you get the idea!
I doubt the BEC is faulty. CC Built in BECs are WEAK. My MMMs all do it as well. With just a single hitech 7950H or bluebird servo. Even with the cap as you stated. I know the turingy BECs work well... as thats what I have been using. Cheap too...
Maxx - FLM, MMM, CD Med.36x706s
Raja - FLM Ext. MM, 1512, 4s
SC8ight - MMM, 1520, 6s
D8T - MMM 1717 6s