(03-31-2025, 08:40 PM)XPS Wrote: The amount time before entering failsafe can be programmed. 2 seconds is the default. As soon as the signal is available failsafe is exited.
Again, failsafe set to HOLD will not change the servo positions while a failsafe is occurring. A failsafe set to USER DEFINED will hold the failsafe at whatever positions you have deliberately set them to. You should be setting the failsafes to some known position. We typically recommend slight up elevator, and either slight left or right rudder. Failsafe is not designed to save an aircraft - it is designed to give you predictable flight path where you can determine where a loss of radio control impact will occur so that people can be moved.
We are still selling products, and doing upgrades and repairs, so people are still using XPS radio systems.
i understand the setting and i remember an article from the 70ies the title was - "crashing with or without failsafe".
my problem is that the planes see to get down as if you suddenly push the elevator down because i cannot really explain this behavior with turbulences etc - wish o had a movie of it. one time i think it was diving more than 2 seconds from higher up and then reacted to my elevator pulling.
it is also interesting that it happened on traditional tails and vtails which would require 2 servos go in sync for the vtail or it would be more like a rudder effect. anyways, weird.
then again there is always pilot error too
erhard