A little info for those who may use specktrum equipment with V4. A loss of signal to the rx causes throttle to go to max even if throttle was off at time of signal loss. The 10 second wait for it to rebind probably isn't to bad if outdoors but its an eternity if inside.
If I had actually read the directions I might have seen where it said after setting up the model you need to rebind a second time in order to save the failsafe limits. Throttle drops to off when signal is lost now.