DSMX or DMSS Preference
I am in a state of confusion regarding which way to proceed between the DSMX or DMSS
Transmitter/Receiver Systems? I upgraded my A-10 receiver last winter (2014/2015) from a JR1221X DSM to a Spektrum AR12120X DSM. I continued using my JR 12X transmitter that was updated and validated by Horizon in November 2011.
Everything went well without a single glitch until Saturday at Jets Over Kentucky last July.
One Minute plus left for the 9[SUP]th[/SUP] flight 6 planes in the air with others waiting take-off clearance.
Going straight away & level from our flight station with full power on a pair of KT 140s.
Landing plan…. a pull-up to inverted, ˝ roll right to upright (Immelman), then right bank to enter the landing pattern.
The pull-up only resulted in a slight up trend then a momentary straight and level before an instant absolute nose down crashing into a field pond. There was no other movements in the attitude of the wart hog from my transmitter inputs.
Opinions….we believe (several on-site testimonials) the Rx entered fail safe settings straight & level, turbines to shut-down.
Notes: It was our first flight on Saturday, charged all 4 batteries, filled both fuel cells & air tanks....Tx was charged overnight.
Start-up, taxi out, t/o…..all previous flights had been normal, until the incident, not a single glitch. We were, having received simultaneous t/o clearance from Marvin, doing a follow-me routine with Barry Hou/Dirk Flejter.
Subsequently checked elevator servos (JR DS 8711s) both are normal. In any case it is not conceivable that both would fail simultaneously to cause an immediate straight down attitude without a single wiggle from any transmitter signal.
The RX batteries were a pair of AGA LIFE 6.6 V 3000ma installed new, along with the new receiver, with 20 some flights. It’s not conceivable that both would have failed simultaneously with a minute+ left in a 6 minute flight.
I am very concerned with what system I should use for my fleet so would appreciate some professional input before proceeding any further.