RE: ds821 dx7 servo defect
They can't admit there is a problems. They would be liable for all the crashes they have caused. In stead they will quietly fix the problem and it will slowly go away........
Posted on: 1/20/2007 8:45 AM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5294020

RE: ds821 dx7 servo defect
Danny, I guess we will just have to agree to disagree. I am not a 3D flyer by any means and have just been flying Heli's for a year. I had 4 of the 821's go bad in Raptor 50's. At first I thought maybe I did something wrong in the mounting but then I saw several reports of the 811's and the 821 failing in 50 size Heli's. They are just not strong enough for that application. It's not a big deal. You just get a servo that is stronger. Anyway, thanks for taking your time to reply. Based on the information presented I think everyone will need to make their own decision on what application the 821/811 servo is best for. Harold
Posted on: 1/10/2007 9:23 AM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5241745

RE: ds821 dx7 servo defect
Danny, I have too. I had them in two 125 size planes and they worked great. But a Helicopter is not a plane and has more vibration. I never said they wouldn't work in planes. The just don't seem to be able to stand the vibration of the 50 size Heli. Have you flown they in these type of aircraft? Harold
Posted on: 1/9/2007 10:53 AM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5236352

RE: ds821 dx7 servo defect
Danny, The JR site shows the 821 being a choice for 30 to 50 size Helicopters. It has failed several times in 50 size applications. My repair ticket states that I should use a 8311 or similar in a 50 size machine. If this is the case then you need to change the chart on the JR web site. I know it's a good servo for light/sport applications. It's just that the specifications would lead one to conclude that they will handle more than they seem to be able to do. A 72 oz,ball bearing, digital servo should be able to survive in a 50 size helicopter. Anyway, not really worth debating. They are sport servos as you say and therefore must be used in no larger than 30 size Heli's and 40 size planes. Fix your chart! Harold
Posted on: 1/8/2007 10:31 AM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5230791

RE: ds821 dx7 servo defect
Danny, I am not trying to be rude but I think you need to spend more time talking to your co-workers. I have talked to Joe, for instance, several times about the 821 problems. He said you guys have seen many problems and are looking into it. I just received 2 replacements under warranty and the tech said he wasn't sure what to tell me as to the use of these servos. This was in writing on my repair ticket. Take a look. Thanks, Harold
Posted on: 1/6/2007 7:54 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5222091

RE: DX-7 Defect
Still got you beat. I have 9 models flying on my DX7 and one Heli on my DX6. Not a glitch one. This is great stuff and not having to worry about frequency control is great. I also bought 2 extra receivers but I can't decide what to put them in. So who has more than me on their DX7??
Posted on: 1/4/2007 1:56 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5209375

RE: DX-7 Defect
rc302, First of all I would rebind your two planes just to be safe. Is you radio a virgin DX6 or a converted 6102/DX6 like mine? What you describe really makes no sense. Pretty weird.
Posted on: 1/3/2007 8:59 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5205817

RE: DX-7 Defect
That's pretty much how a volt watch does on any radio I have ever used. It's worse with digital servo. Just look at the reading when everything is still. That's just how they work. If that really bothers you there is another product called a GEM 2000 that does basically the same thing.
Posted on: 1/1/2007 8:32 AM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5191277

RE: DX-7 Defect
BankYank, I use a Volt Watch on both of my Raptor 50 Heli's with AR7000's and they work great. I did have to use a Y connector because I needed all 7 channels. You should just be able to plug it in an empty channel and it will work fine. Make sure you have it plugged in correctly and not backwards. Harold
Posted on: 12/31/2006 5:04 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5188782

RE: ds821 dx7 servo defect
I have never had an output shaft break or seen that happen. On my two bad ones they just died and would not move at all. I opened them up and took the gears out. I them flipped the motor gear and it just barely started spinning. Basically the motors in the servos gave out. Same on both servos. Harold
Posted on: 12/31/2006 12:35 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5187640

RE: ds821 dx7 servo defect
Here is my take on the DS821 servos. I have had 2 fail, both in Raptor 50's helicopters. Horizon replaced them under warranty and suggested that they are not right for my application. I have to agree. You have to remember that the 821 is a sport (inexpensive) servo and most likely should not be used in anything larger than 40 size planes or 30 size Heli's. This comes from talking with Joe at the Horizon support line. I did have these servos in two 125 size planes buy removed them yesterday. Horizon's position is that there is no defect with the servo and if it fails then it is not the correct servo for the application. I don't necessarily agree with this line of thinking but I am surely going to listen and not use these servos in anything larger than what they suggest. I think their 72 oz rating is a little misleading. For me, I will never use a DS821 (JR or spektrum) servo again. Not after 2 failures. They will probably work fine in 40 size application but I don't fly that size anymore. I think all the failures I have seen have been in Heli's. I don't recall seeing a failure posted in an airplane. Just don't "over use" this servo, or any servo, and I think you will be ok. As a side note, I have seen the same failures posted on the DS811 servo which is the servo that the DS821 replaced. These servos are just not as stout as their specs would lead you to believe. I guess at $29.95 each we were expecting to get more than we paid for, but the specs made it look that way. Defect? I don't think so. Over rated specs? Maybe. Hope this helps someone. Harold
Posted on: 12/31/2006 4:53 AM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5186508

RE: DX-7 Defect
I flew my 2 125 size planes, and my 2 Heli's today, again with perfect flights. Of my now 9 models on the DX7 5 are using the AR7000 receivers, 3 using the AR6000, and 1 is using the AR6100. I mounted all of the AR7000's with one antenna vertical and one horizontal. I have never had a glitch one. Here are some important points that you should follow with this radio or any radio for that matter. 1. Range check the radio on the maiden flight with the engine off. 2. Range check the radio with the engine running at idle. 3. Then check all controls with the engine up at full speed. 4. If any of the range checks fail, then rebind the radio and try again. Once you pass all the test then you are good to go and should only have to rebind if you change something on the throttle setting. I talked to a guy at the field today and he had set up his DX7 at home. When he got to the field it would not range check at the proper distance. He rebound it and has never had a problem since. My conclusion is that it is possible to have a bad "bind process" and that is why range checking is so important after a bind. I have no idea how you do a "bad bind" but I think it can happen. I saw it once on my DX6. I rebound and never had another problem. I still use it today. The moral to this story is RANGE CHECK before you fly the maiden flight and every time you rebind the radio!! I remember in the "old days" we used to range check the radios once each day we flew at the start of the day. I got lazy and don't do this. Another thought. Use good common sense when installing the receiver. We are talking 2.4 ghz and with the small wave length it's important to keep the antenna(s) in the open as much as possible. I take great care and thought in my installations as to receiver placement. Oh, I did have one problem today. My little TREX got too far away for me to see in the grey sky. It got upside down and I nearly lost it but got lucky and made it back where I could see it. I'll tell you when you pass 50 it get's harder to see in grey skys. Anybody got a fix for that? I hope all this rambling helps someone. RANGECHECK, rebind if it fails, that's the key. Harold
Posted on: 12/31/2006 4:37 AM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5186497

RE: DX-7 Defect
I am flying 9 models with no problems. 3 Heli's(2 nitro, one electric) and nitro and electric planes. I notice you have not installed the receivers correctly. You have both antennas horizontal. I mount one vertical and one horizontal as stated in the instructions. I also do my best to keep the antennas away from any other electronics and metal. You have yours too close to the servos in IMO. Just some suggestions. I think at this frequency we are going to have to do a little cleaner installs.
Posted on: 12/29/2006 10:32 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5180768

Need HELP with BUDDY BOX
Hello, I am helping a friend learn to fly. He has a 8103 transmitter. I set it up for dual rates. He needs to fly at the lower rate. When we hook up another radio as a buddy box you only get full rates from the buddy box which is too much for him to handle at this point in time. The guys at the field tell me thats just the way JR works in this hookup and I will just have to mechnically "tame" the plane for him. Please tell me this is not so and there is a better solution. Thanks for any help. Harold
Posted on: 12/23/2006 7:35 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5153605

RE: Can this be programmed on a DX7???
Danny, I called into Horizon today and they helped me get it working. Just to hard to keep typing back and forth. Here is what we did. 1. Turn on the Flapperons 2. Turn off my mix 6 whicj was aler to flap mix. The flapperons took care of this. 3. Set rate in flap system menu. 4. Add a mix of elev to elev and set rate there and set the switch to flap2. The rate for the elevator in the flap system menu would not give the throw I wanted so this did it. Anyway it just showed me that for a sport flyer like myself that this radio will do all I need for my Planes and Helicopters. I'll probably still get the DX9 when available just because. No other reason. Thanks for you help. Harold
Posted on: 12/21/2006 9:40 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5145945

RE: Can this be programmed on a DX7???
Danny, I can't seem to get it to work. Let's just work with the Aleirons for a moment. I have the right aleiron hooked up to the ALer channel and the left one to the AUX channel. I tried mixing the ALER to ALER and setting it up on the FLAP2 switch. I programmed a rate and offset but when I flip the switch to flap2 it just sets the alerions at the rate I have set. In other words I could flip this switch to FLAP2 and do a roll forever. What I want is to have the Alerions and Elevator (4 surfaces total on 4 different channels) all go UP to make an airbrake. I could do this on my 9C and have also seen it done on a JR 9303. Again, can this be done on the DX7? Thanks for any further help. Harold
Posted on: 12/20/2006 6:18 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5140678

Can this be programmed on a DX7???
I had a Futaba 9CHPS and sold it when I got my DX7. I use the DX7 on Helicoptor and one plane for now. On the plane I had a switch set on my 9C that was an air brake function. When I landed I would flip the switch and it tjrew the elevators (2 servos) and the Alerions (2 servos) in the full up position. Stopped it like a rock. Anyway I don't see any way to do this on the DX7. Any help??? Or do I just have to wait on the DX9?? Thanks, Harold
Posted on: 12/19/2006 7:38 PM by Author "hrosee" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=5136739

RE: XtremeLinkâ„¢ - 2.4GHz for Futaba, JR, and Hitec radios
No matter who's system you use you will have to buy new receivers. There is no way around that. The bottom line is that this is a great thing for our hobby and I am going there. I current use a 9CHPS. To be it's a nice transmitter and I would like to keep it but my money is going to whoever comes out with a product that works AND has support. I think Spektrum was wise to team up with Horizon. There are only a few large distributors, Horizon being one of them. I just know after using the DX6 at the field with everybody else waiting on their channel to come free I like it. No, I love it! Like I said I will reserve judgement until products are available. To date the only ones that have been sucessful at actually selling a real product is Specktrum thru Horizon. Harold
Posted on: 10/24/2006 7:13 PM by Author "hrosee" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=4910050

RE: XtremeLinkâ„¢ - 2.4GHz for Futaba, JR, and Hitec radios
They may have backing but don't have a product yet. That is the main point. I will reserve judgement until I see a delivery date. At this point they are not even that far along so I really don't see them as a option at this point in time. I hope they suceed because I would rather use my Futaba 9CHPS but right now they are just another web site with no published telephone number and no delivery date. That's the facts, period. Harold
Posted on: 10/24/2006 5:32 PM by Author "hrosee" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=4909640

RE: XtremeLinkâ„¢ - 2.4GHz for Futaba, JR, and Hitec radios
It seems to me that the bottom line is if you want 2.4 in the near future you order the DX7 from Horizon. I really hated to place my order because I use Futaba but I pre-ordered so I could be one of the first to try it. I have a DX6 now and it works great in my Park Flyer airplanes. I will be trying the DX7 in my planes as well as a helicoptor and order and extra receiver also. I doubt any 3rd party company will come out with a unit you can depend on. The web site for the guys mentioned doesn't even have a telephone contact number. They don't appear to me to have the backing to pull this off. I think you will see plug in modules from JR and Futaba before you will see it from them. Just my 2 cents. Harold
Posted on: 10/24/2006 3:52 PM by Author "hrosee" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=4909274