ORIGINAL: basman
Issues resolved 1. the plane set up Servo's 5 DS821 diitals 1 HXT 900 gram ( throttle ) Batt 4.8v ni mh 1600 mah RX AR 7000 Tx DX7
2. There is no quick reset installed ( I have been told that spectrum install this for free, I just have to send the rx back )
3. No rebind after plane set up eg. reversed throttle servo after binding
This resolves a lot of questions the set up of the plane and radio was incorrect, which turns out to be an expensive lesson on my part. I will also change the on board batt to 6v amybe 2600mah.
I have had the DX7 about 6 months now and love the tx and it's programing. I have 6 Ar 7000 rx and 1 AR 6000. All will be going on the bench to recheck set up. I have noticed that the lattter purchased RX units have the quick connect insralled. eg when radio and plane both on then radio switched off, then the radio turned back on the rx lights start flashing. This all happens in about two seconds.
Cheers for the input guys
Thanks for letting us know what you found.
I'm not sure how the distributor for your neck of the woods handles things, but Horizon will do the upgrades over here for free. All you have to pay for is shipping to them and they do the upgrade and send 'em back.
I'm a bit confused on your check for the Quick Connect update; all that you do is to turn off the model then back on, the rx should come back online in less than 1/2 second with the lights flashing abeit at a much slower rate than when binding. If you turn off the tx only, then you'll see what the failsafe/SmartSafe settings are, but if you turn off both then the tx has to pick up two new frequencies and the rx has to find them. That process usually takes between 2 and 5 seconds. Here's a link to the Spektrum SB on the Quick Connect update:
http://www.spektrumrc.com/Articles/A...ArticleID=1756
As for re-binding, it's necessary after the initial setup to tell the rx what to do with the servos until it links with the tx and as you found out, setting the failsafe/SmartSafe. The classic example was guys with retracts who had reversed the direction of the retract servo. Turn on the model and the gear would retract, then extend when it linked with the tx. I usually do a re-bind after setup and then one after the maiden flights where the trims are set. IIRC, the manual talks about re-binding if you change something substantially like a linkage for geometry changes or something. While I've seen some folks talk about having to re-bind, that has never been an issue for me and most of those problems when finally diagnosed turned out to be operator error of some sort causing the problem.
When you decide on a new battery, please do a little research on the specs for the cells. Total mah ratings aren't enough anymore since a lot of the cells used for making model flight packs are actually designed for electronic devices where a high impedence battery is not an issue since those devices don't pull much current (amperage). This is not the case with today's new high torque servos which can pull quite a bit of power and on a high impedence battery pack, that'll drop the voltage like a rock when the battery tries to keep up with the demand. Look for the impedence, continous output and burst ratings before selecting new flight batteries.
Sorry 'bout your loss, but it's good that nobody got hurt.