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RE: Spektrum DX-7 - 1/16/2007 4:04 AM   
n9331v


 

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Status: offline 		Hey guys just mounted my new DX7 in my just finished KMP B25 with Zenoah G20ie gas engines.
cant wait till they come out with a DX9

Has anyone set up this radio for a twin yet and using mixes instead of a Y for the throttle if so what setting's did you use.

Thanks



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RE: Spektrum DX-7 - 1/16/2007 7:24 AM   
waynegal


 

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Status: offline 		thanks NCREGO for your reply,You are right. MY friend is allready flying with dx-7 in a hype aeaiting some time to pass before swopping in an Avonds F-15.I have no problem to stop using the 10x.I think like you said it may be better having one brand than mixed together since time has not proven them yet,Maybe as they go on the market and many people use them I will buy one module for my JR .Thanks for your help .

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RE: Spektrum DX-7 - 1/16/2007 5:50 PM   
d_wheel



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quote:

ORIGINAL: gooseF22

The Lab guys fly their DX7 on the drone this week sometime. Its the backup to the autopilot, and is working well even with the 2.4 video downlink. We basically follow the same rules for keeping interference down that we follow for 72 without the rf chokes of c ourse, just using proper geometry and spacing just the same, and haven't seen a single problem..(knock on wood)


g


What kind of spacing do you have between your ar7000 and the video downlink. How much power are you running on the downlink?

Later;

D.W.


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RE: Spektrum DX-7 - 1/16/2007 7:32 PM   
MMcConville


 

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Status: offline 		Gotcha. Here what I'd do in this case.

First, the rx connections:

1. right side Aileron into AIL channel
2. Left side aileron into AUX 2 channel
3. Flap into Flap channel (AUX 1)
4. Rudder, elevator and Throttle into the normal channels

TX program

1. Go into the Set-up mode (hold down scroll and select keys while turning on tx)
2. scroll to the Input Select screen
3. Set Aux2 to INH, AUX2 TRIM to INH, FLAP to SYSTEM (should be default) , FLAP TRIM to INH
This turns off AUX 2 channel from the lever.
4. do NOT activate Flapperon in wing type. This must be OFF.

Aileron Set up
1. Power off tx and turn back on. Go to normal programming mode
2. Scroll to P-mix 6. Set AILE as master and AUX2 as slave. Set the mix values to 100% in both stick directions.
3. Scroll to Sub Trim and set the neutral for the right side aileron with AILE channel and the neutral for the left side aileron with AUX2. (if the direction of one or both of the ailerons is backwards, first go to the REVERSING SW screen and reverse the apropriate channel (either 2, 7 or both)
4. Scroll to Travel Adjust. Set the desired travel for the right side aileron with the AILE adjustment.
5. Scroll back to P-Mix 6 and tweak the travel of the left side aileron to match the right side with the mix values by increasing or decreasing from 100%, for each stick direction.

Flap Set-up
1. Go to normal programming mode
2. Scroll to Sub Trim and set the neutral for the flaps with FLAP channel.
3. Scroll to FLAP SYS. screen. Set the desired travel for each of the 3 Flap switch positions. You can also set any elevator compensation for each of the 3 flap positions here. (typically it would be 0 for the neutral position and then tweak in what is needed after you test fly for the mid and full flap positions.)

That should do it.


< Message edited by MMcConville -- 1/16/2007 7:47 PM >

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RE: Spektrum DX-7 - 1/16/2007 7:43 PM   
MMcConville


 

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Status: offline 		The mistake here is the Flapperon should be off.

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RE: Spektrum DX-7 - 1/16/2007 8:13 PM   
JWQ500RC



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Status: offline 		Help!

My DX7 blew a fuse, No Problem I can change that, but when I lifted the circut board to get to the fuse the antena wire came loose. (not my day). anybody know where this attaches.

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RE: Spektrum DX-7 - 1/16/2007 11:53 PM   
speedpro 1


 

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RE: Spektrum DX-7 - 1/17/2007 12:49 AM   
JWQ500RC



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Status: offline 		Not sure. Read about his happening on another thread also. replaced fuse Radio works fine just no range with antena wire loose.

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RE: Spektrum DX-7 - 1/17/2007 12:52 AM   
bigbird007



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Status: offline 		I've got a question on the charger for those who are battery savy. I don't have any fancy chargers and just use the wall warts that come with my radios. The problem is the DX7 comes with a 50 milliamp charger for a 1500 milliamp TX battery and a 1100 milliamp RX battery. Won't this take like 36 hours for a full charge on the TX? What if I want 2 full days of flying in a row? I read on this thread that Horizon hobby says the manual is a misprint but shouldn't this be a 110 milliamp charger for the battery sizes?

My camera battery charger has a switch for NiCad and NiMh. The DX7 charger is a NiCad charger... I'm so confused!

Thanks Mike for the programing setup for dual elevators and dual Aile. A few common setups like that would go a long way towards helping us programing challenged people in learning. I'm all for the DX7 programing for dummies!

I replaced my JR 700 in my Easysport with the AR 7000 and got bit by the 2 wire switch but a quick call to Horizon sorted that out. Short Story I LOVE it.

Bigbird

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RE: Spektrum DX-7 - 1/17/2007 1:02 AM   
rmh



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Status: offline 		the charger that comes with it woks just dandy- --you get about 6+ hours on a full fill so - after any day of flying, plug it in and if you forget about it - no need to worry- it won't harm the cells.
give the first charge a while overnite - before you play with the radio but for a full tank - two days.
The ol rule of thumb (don't beat your wife with a stick larger in diameter than your thumb) applies here .
wrong rule -- stay at or below 10% of cell rating for normal charge.

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RE: Spektrum DX-7 - 1/17/2007 12:56 PM   
BillS


 

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Status: offline 		I have a few models that use 8 channels. Does anyone know when 8 channel radios might be available? It seems foolish to start an expensive change over of many models with higher channel count just around the corner. Is there a technical problem prohibiting more channels?

Thanks.

Bill


Looked around after writing this and there are 15 transmitters sitting on the shelf and two airplanes completely finished, never flown and ready to go without receivers. Refuse to let the situation get any further out of control.


< Message edited by BillS -- 1/17/2007 1:45 PM >

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RE: Spektrum DX-7 - 1/17/2007 1:25 PM   
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Status: offline 		Bill, in response to your question regarding availability of 2.4 ghz radios with more than 7 channels...let me relate what was spoken at a seminar held a year ago. A Team JR rep introduced the dx6 (park flyer) radio at that time, saying that technically there is no reason prohibiting 9...12...14..or even many more channels.
So, having heard that statement, and yet here we are a year later and we still only have 7 channels...what do you think the delay may be attributed to?
Little emphasis on engineering design?...Lack of demand?...marketing strategy?
I really don't know...but I suspect it will surely come at some point in the future.
Another curiosity is...why has Futaba, and JR and others failed to introduce their own 2.4 ghz air systems.
Kinda makes one say...Hmmmmmmm. They may be losing market share that they will not regain when they do eventually hit the streets with their offerings.
Most of us can get along with (7) channels for most of our planes, and in the hopes of continuing downward compatibility with the future larger systems, we buy now, and begin to enjoy all the wonderful benefits that the Spektrum systems bring to the party.




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RE: Spektrum DX-7 - 1/17/2007 2:32 PM   
rmh



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Status: offline 		How about 40 channels ?
yes - possible
Having had 10 channel stuff for years - I have only used the whole 10 --once-and I later junked all the extra stuff and went back to 5 - but that's another story. The scale guys into lots of "features " - yes they can have fun with sequenced doors , etc., but the real possibility of a closed loop and monitored power control setup is likely the best use of the involved systems.
Back to square 1---
the 90% share of the market will use 5-6 channels - for 100% of their models -do a count among your friends .
The marketing of the SPEKTRUM was spot on --proove the system
the 7DX is priced and directed at 90% + of the market.
The radios that really puzzled me were the very pricey 12-14 channel radios with beautiful screens and features --and yet no better safety from getting shot down from internal noise or external noise - than any $99.95 setup on same frequencies.
That's a marketing stratagy that really escapes me.

< Message edited by dick Hanson -- 1/17/2007 2:34 PM >

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RE: Spektrum DX-7 - 1/17/2007 2:51 PM   
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Status: offline 		Jim, the entire marketing strategy is certainly perplexing. The inherent lack of safety in the older mythology makes no sense whatsoever. Frankly I have been surprised and disappointed that AMA has not been seriously jawboning for the higher level of safety associated with newer technology. Elimination of the close pin/frequency conflict and/or people carelessness or lack of knowledge has to represent 10 to 100 X safer operation. In my own circumstance there are a minimum of 200 homes within conflict distance of my home/farm where I fly often. It is probably only a matter of time before someone has a radio on my primary frequency. Neither of us will know about the frequency conflict.

I am egger to move forward but reluctant to start with systems that don’t meet current requirements.

Bill


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RE: Spektrum DX-7 - 1/17/2007 3:05 PM   
BillS


 

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quote:

  How about 40 channels ?

Don’t need 40 channels. The need for 8-channel count is not hypothetical. Use 8 now and need 8. And yes a hair-brained solution can be improvised. But it seems foolish.

Bill


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RE: Spektrum DX-7 - 1/17/2007 3:17 PM   
Geistware



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Status: offline 		Mike,
Thank you for the step by step instruction.

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RE: Spektrum DX-7 - 1/17/2007 3:20 PM   
Bob Pastorello



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Status: offline 		As frequently as I may not completely agree with Mr. H., on this marketing thing, I am one HUNDRED percent in agreement. Spektrum's market CLEARLY is 'spot on', IMO, as they really ARE selling to exactly the largest buying population out there. It always amazed me, like Dick, that so much effort was spent on the high end, super expensive radios that didn't actually enhance the SAFE operation of our models anymore than the "throw away" 4 channel FM setups given away with trainers.

Personally, I think as soon as the VAST 'middle majority' of RC'ers see the benefits and cost-effectiveness of the Spektrum, 72Mhz **MAY** become "safer" simply because there will be so fewer users per location ON 72. But that is just my concjecture/speculation.

If Spektrum DOES release a 9 or 10channel - would I buy one? ABSOLUTELY, and in a HEARTBEAT.

But the DX 7 purchase permitted me to consolidate things and make things less complicated, and more efficient for my hangar.

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RE: Spektrum DX-7 - 1/17/2007 3:26 PM   
rmh



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Status: offline 		100% agreement ?
Not even my wife fits in that ratio-
and strange as it seems, Libby the hound even balks occasionally but is about 98%.
So she is a keeper.

< Message edited by dick Hanson -- 1/17/2007 3:27 PM >

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RE: Spektrum DX-7 - 1/17/2007 3:51 PM   
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< Message edited by kolarshooter -- 1/18/2007 3:37 PM >

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RE: Spektrum DX-7 - 1/17/2007 3:52 PM   
Capt Jim


 

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Status: offline 		Hey Mike McConville. I cant thank you enough for that nicely detailed set up that you posted (a page or so back )for my ailerons and flaps, etc. Now, If you could just rewrite the manual for us..heh heh!!! Thats the kind of info us non technical guys really need and appreciate. I just bought a couple more AR7000 receivers...I'm up to six so far, but one day the entire squadron will be upgraded to Spektrum.
Many thanks once again MIke,
Jim

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RE: Spektrum DX-7 - 1/17/2007 3:52 PM   
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Status: offline 		Reading through the past several posts...

1) I got a DX-7 for $100.00*

*I'm blown-away by how INEXPENSIVE the radio is. No, I didn't want to buy four servos (as well as the switch and battery,) but they are servos I will gladly use in an AstroHog I'm building to putt-putt around with using a BuddyBox when friends or family come over. I paid $329.00 for the system...At retail, the "extra stuff" is worth over $100.00...just for fun, let's say $129,00. So, since I paid $329 for the system...minus the $129... in my twisted thinking, I received the radio and a $100 receiver for $200 dollars. So, it seems that I got a (reasonably) full-featured 7 channel computer radio - sporting all the benefits of SS technology - for just 100 bucks! Doesn't sound expensive to me! Now, people grumble about receivers...I'm paying 44.99 for the 6100 Rx's for my foamies, and sailplanes...and about $100 for the 7000. In these threads people have grumbled at the 100 dollar price tag on the 7000 receivers...well, they are CHEAP compared to the JR 9 & 10 channel stuff we're using in our IMAC planes. Yea, it's gonna cost a few bucks to start changing over the fleet (my fleet isn't large anymore...I've thinned back to the few planes I have the most fun with) but a person doesn't have to change everything out at one time.

2) I have to believe that the technology is patented. I doubt Futaba and others could just buy a system, tear into it, reverse engineer it, then market it under their brand. I am not a patent attorney, but this sounds like trouble - both technical and legal.

3) Some of us have wondered over the last few years why JR hasn't released an updated 10X radio (>2048, enhanced user interface, maybe an MP3 player and color screen for Dick Hanson ) Now I'm of the mind that - since Horizon/Spektrum and Horizon/JR are in one way or another involved with the deployment (I didn't say development) of the SS technology - that we may see the technology sold/transfered to JR for the next generation of high-end JR transmitter.

Is the DX-7 the inexpensive "test bed" to get the technology out in the field...work the bugs out...get people used to the concept? Is that why it's so affordably priced? It affordably fills most pilot's needs completely. If it somehow fails we'll see, "We at JR are in no way involved in the SS system and its failure. We continue to offer the finest 72 MHz radio gear..." BUT: If it is bullet-proof in some of the "beginner" installations we've become used to seeing over the years, as well as giant-scale gas (with it's inherently noisy RF environment) it will likely prove worthy of being up-sized to a fully comprehensive 12+ channel system capable of completely outperforming the Futaba 2048 and other 72MHz competition.

Ready for maiden...





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< Message edited by kolarshooter -- 1/19/2007 4:01 PM >

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RE: Spektrum DX-7 - 1/17/2007 4:56 PM   
T-bolt-RCU


 

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Status: offline 		Hi All,
Just got my DX7 and I am not sure if I have a problem or not. Maybe someone can help, or has experienced the same thing. It has happened about three times out of 25 times of turning on my radio. I will turn on my transmitter and then the receiver and the unit will go immediately into failsafe. I can hear the digital servos but NO surfaces will work. Both receiver LED's are on, solid light. I turn the receiver off, tranmitter is still on, turn on the receiver again and everything will work fine. I have not flown it yet. The weather in CT. is just too cold for me, so I am not sure how it range checks. I changed the receiver switch, but it didn't help.
T-Bolt

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RE: Spektrum DX-7 - 1/17/2007 4:59 PM   
Bob Pastorello



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Status: offline 		Sounds like hasn't been "bind"-ed appropriately. Try that...??

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RE: Spektrum DX-7 - 1/17/2007 7:23 PM   
MMcConville


 

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Status: offline 		That is not a problem. It has to be bound properly or it would never work. At times the system doesnt initialize and cycling the rx off and on agin does the trick. Its absolutely not an issue. Once its on, its locked.

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RE: Spektrum DX-7 - 1/17/2007 7:41 PM   
n9331v


 

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< Message edited by n9331v -- 1/18/2007 3:07 AM >

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