Quick test of these Hobby King retracts http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=28979
showing amp draw with normal up/down cycle and a simulated example of both retracts "locking up".
Did another quick test today, to see what happened to the voltage when both retracts locked up. Starting voltage was 5.11 volts. When I forced the retracts to stop half way through their travel, voltage dropped to 4.1 volts. Definitely using a separate pack for the retracts and receiver now!!
