ORIGINAL: Silver182
A requirement of the radio is that it's software will allow a 1 second delay or HOLD condition before going to the snap-roll condition. JR's earlier 10 channel radios had a fail-safe feature that would allow the user to set the time delay before surface activation. The later 10X radio transmitting to an S-mode receiver does not have a delay feature. In fact there is NO time delay before activation. Can you see why no one with this type radio wants to hear anything about fail-safe settings other than HOLD...
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As I have mentioned several times before the reason the turbine manufactures have a time delay feature within the ECU is to allow a shutdown fail-safe setting required by AMA for turbine use! Yep, the most widely used radio the JR 10X would not be usable.... in the turbine world if the turbine ECU did not have the time delay feature included within it's software.
Lee H. DeMary
AMA 36099
I don't get it. What is the point of having the radio apply fail safe settings to the control surfaces while the ECU delay allows the engine to go on for another second. Wouldn't it be better if the engine was cut/reduced to idle as soon as possible, i.e., at the same time as the control surfaces are moved to their fail safe positions?
The 1 s delay in the radio is there to allow for short duration interference. The Rx applies a hold setting until the interference either dissapears, or if more than 1 second has elapsed applies the pre-determined fail-safe settings. The 1s delay in the ECU doesn't solve the problem of the missing delay in later JR 10X radios operating in S mode.
/Red B.