ORIGINAL: LIGHTEMUP

Jim,

I am trying to bind the transmitter to receiver on my new JR 10 ch XPS system. However the transmitter module will not go into the "orange" state necessary to complete the binding. I placed this question on your tech support email two days ago but haven't got an answer. I need to get this completed so I can finish my install.

David Searles
Team JetCentral

ORIGINAL: C2_Hobbies

Here is a good link for you that addresses your "specific question".

[link=http://www.rcuniverse.com/forum/m_5768323/anchors_5768323/mpage_1/key_xps/anchor/tm.htm#5768323]XPS turned ugly[/link]

ORIGINAL: LIGHTEMUP

The following is my experience and MY OPINION ONLY:

Based on previous reports of pilots who have used the XPS system at Apollo Field Sepulveda Basin, CA, and now my own direct experience, use of this system at this field is an ABSOLUTE NO GO!!

This install was range checked, at my home with the turbine running, I stopped walking away from it in excess of 300' with complete control. Range checked at the field for over 200' complete control. I began my first flight with a plan of keeping the plane in relatively close and at reduced throttle settings to make sure everything worked. After going thru initial retrimming of the aircraft I flew several circuits at no more than 75% throttle and relatively close in for normal turbine flight. Everything seemed rock solid. I had one minor slow response on the last circuit prior to setting up for landing, but it was so minor it could have just been the plane still needing a little more trim set.

Landing was perfect, so I refueled, recharged and began flight two with the intent of extending the flight envelope a little farther outbound and depth away. I took off, turned outbound and then downwind climbing with the turbine at full throttle, allowing it to pick up some speed. I let it proceed a little further downwind this time before beginning the base turn to upwind. At the point I wanted to make my base turn to upwind I felt no response to input. Then the landing gear extended, which was my indication that the receiver was in failsafe. It continued for what seemed like an eternity, and then I saw the gear retract again. I immediately put the plane into a hard bank to the left to bring it back towards the field. Just as the nose came around to approximately pointing at me, still in a bank, the gear extended again, FAILSAFE. This time the nose tucked straight down, with the belly towards me I could see the gear still extended. At about 30'-50' above ground the gear again retracted, but it was too late. The plane impacted, turbine running at idle, and a full fuel load. EVERYTHING BURNED!!!! The XPS receiver ejected from the plane on impact and appears to have no damage. Everything else, TOTAL LOSS!!

My previous experience with this receiver consists of watching Darcy Wingo fly the Hell out of it in his Flash at Buttonwillow and Phoenix, with absolutely no concerns! So I felt relatively comfortable putting it into a proven airframe and installation with well over 300 flights on it with never a glitch. I installed the receiver high above everything else in the aircraft and had freshly charged batteries which were topped off between flights. All to no avail. In the same area of the field that others had reported problems in reception with their XPS systems, I went into lockout twice, and lost my aircraft!

I have no idea what the problem is or why. I am not an electronics expert! But I will give my absolute support to the concept that this system is UNSAFE, to fly at the Apollo field location.

David Searles