Peace Drone XR - Intro Video

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  • Опубликовано: 15 июн 2012
  • This is the Peace Drone XR (extended range) designed for FPV flights of 30 minutes. Ground video only, flight video to follow.
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Комментарии • 112

  • @andresdelgado6778
    @andresdelgado6778 10 лет назад

    All I can say is thank you very much for sharing your knowledge. You are really an inspiration. I have watched all your videos (I guess), in the last month. This weekend I'm working building "tubes" for the first time, using your EA techniques, and really I'm having a blast.
    Thanks again,
    Greetings from SoCal.

  • @zero00tolerance
    @zero00tolerance 12 лет назад

    This plane is amazing !!!!!!!!!!!!!!!!! I love the blue color on this model of Peace Drone.
    Cheers and thanks for sharing with us.

  • @tsb247
    @tsb247 10 лет назад +1

    Some friends and I put a basic peace drone together in a few hours last Saturday. I'm looking forward to building quite a few more... Once I can afford the extra electronics!

  • @logansportpilotrp8174
    @logansportpilotrp8174 9 лет назад

    Ed i love your videos,that is a real impressive model i always find your vids really interesting and most of all a real good learning tool.

  • @zander46
    @zander46 12 лет назад

    Your coolest plane yet!
    Keen to hear how it goes!

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад +1

    Yeah man, that was your idea, and a great one at that! I can only think it helps the efficiency and noise issue. It also made a nice little hatch for access. Thanks!

  • @stevefaltis8989
    @stevefaltis8989 Год назад

    Jeeze! Damn! Loving or loved you Ed, human.

  • @RCLancelot
    @RCLancelot 12 лет назад

    Wow Ed, ... you're just getting better and better!!! awesomeeee

  • @BMSWEB
    @BMSWEB 12 лет назад

    Great Video, can't wait to see this bird in action!!

  • @bigjoker4u
    @bigjoker4u 12 лет назад

    Awesome ,but then I have learned to expect that from your videos .can't wait to see it fly .

  • @WascallyWabbitHunter
    @WascallyWabbitHunter 12 лет назад

    very nice...looking forward to making one!

  • @MrWest1960
    @MrWest1960 12 лет назад

    WOW bra...very well done!

  • @VegardMinde
    @VegardMinde 10 лет назад

    Superb!

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Fundamentally you're right - a 2-bladed would be more efficient. The three blade allows shorter blades for better prop clearance. It's also remarkably quieter. I believe this is due to the fact that a 2-blade prop has both blades passing through wing wake per rotation, and it causes the characteristic "pusher buzz" noise. The 3-blade has only one blade passing at a time, for 6 (vs. 2) blade-in-wake events per rotation so it would seem to smooth out the "chop" effect causing the noise.

  • @JohnnyVegasStudio
    @JohnnyVegasStudio 12 лет назад

    That is a sweet looking setup Ed. Well done! After you get some time with the Nova OSD, I would like to see a video of your thoughts/review of its performance esp. with regards to how well that sensor works to provide leveling and its RTL feature. Looking forward to the flight video next!

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Yes, and that's what I do. The transmitted video is not HD, but it's better than the cheap CCD board camera I often use. The OSD information is visible transmitted, but not recorded on the GoPro. The ground station does that. There is a tiny delay, probably 1/5th of a second, in the GoPro FPV transmission. You do need to make sure the internal battery is charged, and there is an option to OSD-view that actually on the GoPro. Other than that I think it's a fine FPV camera option.

  • @ExperimentalAirlines
    @ExperimentalAirlines  11 лет назад

    Yes, it was to get a good thumbnail, no other reason. RUclips selects three random thumbnail choices for most users, and making this long still frame simply increased the chances of getting the one I chose. At some point I was granted the ability to upload a custom thumbnail so I don't do this anymore.

  • @TimJC513
    @TimJC513 12 лет назад

    The camera Ed is using at the ground station provide a few additional features. By recording the wireless video feed, he is able to record the OSD data. This can be helpful in the event of a crash, and not knowing where the plane ended up. He can simply rewind the footage, and copy the last known GPS coordinates from OSD to find the model. Having the 'live footage' is also good for reviewing your video link quality at a later date.
    I'm sure there is more, but I am not into FPV.

  • @soroastronik
    @soroastronik 11 лет назад

    good idea!!!!

  • @wonsnot
    @wonsnot 9 лет назад

    How many amps does this motor draw at 100% throttle?

  • @eastcoast78
    @eastcoast78 11 лет назад

    Do oyu have a down/right thrust angle set on your PD? im in the process of building one.
    mounting the motors today with any thrust angle.
    also would you recommend cutting the ailerons 50% and adding elevators?
    I posted on RCG thread but seems pretty quite there as of late.
    thanks

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    I wish I knew to ask you that 10 hours of experimentation and headaches ago! I couldn't seem to get a straight answer on the forums. Now I know coming from you, it must be true about the servos. Might have to wait for the next FPV ship.

  • @isi3297
    @isi3297 8 лет назад

    Hello ed!! first of all, I want to say that I love your designs! they are awesomes!!!! congrats.
    I have always wanted to build this one...and now I am starting the project. What is the engine and the speed controller used?
    Thanks in advance man!

  • @ItsLRivera
    @ItsLRivera 11 лет назад

    I just discovered your videos and there awsome thanks. I have tons of dollar trees by me.

  • @JohnnyT0464
    @JohnnyT0464 12 лет назад

    I plan to build your Peace Drone XR too. I also plan to down size my big Ground Station to a back pack set up. Way to much to carry around and cumbersome to assemble. I think FPV should be light and simple. Your plane fit the T perfectly.
    I look forward to seeing more of the XR in flight.

  • @gkowen63
    @gkowen63 12 лет назад

    When you have it taken down for transport, could you use the wing hold down bands to hold the wings on by hooking them over the wheels? Thanks for all your great videos.

  • @wordreet
    @wordreet 12 лет назад

    Wow! That's a useful website! Saved to browser bookmarks!

  • @TheRattleSnake3145
    @TheRattleSnake3145 9 лет назад +1

    What did you do to reinforce the bottom for the landing gear?

    • @47HUTCH
      @47HUTCH 5 лет назад

      Bull carnard

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Yes, that's what I do. There are some minor shortcomings but these are not crucial to my applications. The transmitted video is not HD, but it's better than the cheap CCD board camera I often use. The OSD information is visible transmitted, but not recorded on the GoPro. There is a tiny delay, probably 1/5th of a second, in the GoPro FPV transmission. You do need to make sure the internal battery is charged, and there is an option to OSD-view that actually on the GoPro.

  • @rollinolin333
    @rollinolin333 12 лет назад

    I am thinking of nova osd for my schraut5 delta wing im building. How did you get the rth function to work? I have a DX6i and am having issues setting up my tail mix.

  • @rollinolin333
    @rollinolin333 12 лет назад

    what do you mean by flip the servo? on DX6i it says for Elevon Wing Type Connection aileron should be on the left wing and elevator should be on right wing. When I do that it is impossible to get it to work without reversing a channel on tx. When I put aileron on the right wing and elevator on left wing it works but with the arms off to one side not pointing to the outside or inside symmetrically. I cant seem to figure this out.

  • @TimJC513
    @TimJC513 12 лет назад

    I don't think Ed has mentioned this, but I don't believe the arrow shaft slide into a pocket. The rubber bands he shows that are under the wings are what holds the arrow shaft up against the top of the fuselage tube, in addition to adding a grippy surface to hold the wing in place. It's a neat and simple solution.

  • @tsviper
    @tsviper 12 лет назад

    have you tried the Old Man Mike optimized Pinwheel antenna? how is that i comparison to an normal cloverleaf antenna

  • @mohammedshahbaz5734
    @mohammedshahbaz5734 7 лет назад

    how many kv motor you use in this plane

  • @garrettsmedley7935
    @garrettsmedley7935 10 лет назад

    Wow, you are an inspiration. What is the serviceable limit of a rubberband (like when do they degrade)? I ask because I bought a prop saver and the rubberbands that came with it were dry rotted and broke in my hands. And the hobby shop is only 1 year old! I know people use rubberbands on planes all the time, I recently acquired a plane that will need a rubber band to affix the wings.

  • @ExperimentalAirlines
    @ExperimentalAirlines  11 лет назад

    I am working on that right now. I kind of overdid it with this original PD XR in this video so I will be redesigning most aspects of the plane in order to get better payload. Stay tuned.

  • @JohnnyT0464
    @JohnnyT0464 12 лет назад

    how did it do during the maiden flight.?

  • @TheOrangeWacko
    @TheOrangeWacko 12 лет назад

    Hey Ed, where do you buy your landing gear? I know you said Ebay one time, I was trying to search for one, and didnt seem to find any good size that will be good for Axon. Can you suggest something in particular that will be good for a plane like Axon? I also looked on RCTimer, HobbyPartz, Hobby King etc, they don't seem to carry many kinds of landing gear :( tHANKS

  • @rollinolin333
    @rollinolin333 12 лет назад

    Thats what im having issues with. I cant seem to get my dx6i to work with my servos in delta wing mix mode without reversing a servo. is there any good tutorials on this subject?

  • @NATHANBELDEN
    @NATHANBELDEN 12 лет назад

    how do you find COG on this kind of setup?

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Yeah, good idea, you could do that! It's with some reservation that I even use landing gear. The close-range Peace Drone is lighter and breaks down even more compactly. The PDxr is a bit heavier, and I like my fingers, so I'm trying out the landing gear.

  •  12 лет назад

    Is it possible to record, and use Gopro hd hero 2 for Fpv cam at the same time???

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    There is an online canard CG calculator. You can google it just like that, or see some of my previous videos and RCGroups listings for the actual link. The calculator is by "adamone". I do the calculations and then, like all new planes, move the CG forward by 10% or so for early flights.

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Correct. Flying fences is a perfect application for an FPV plane! I look forward to seeing your build. There are probably more burly designs than the Peace Drone for rough work and short landings. Also having some challenges with the NOVA OSD return to home function with elevons. It's very finicky about the physical mounting of the servos, for example. No flying with that until I get it figured out. Stay tuned.....

  • @AerialVideoCentral
    @AerialVideoCentral 12 лет назад

    Where do you get those landing gears??

  • @anakinseviltwin
    @anakinseviltwin 11 лет назад

    What electronics do you use, and how much can this lift?

  • @ollanderparker
    @ollanderparker 12 лет назад

    Wow! Breaking out the serious toys on this unit. This is one maiden flight that would make me very nervous. Looking forward to the maiden video.
    P.S. Hope to see a review on the dragon link. It's performance and how you wired it up. Thanks!

  • @kartherton
    @kartherton 8 лет назад

    Why not put small spacers between the fuselage bottom and the undercarriage top, the size of the undercarriage top?
    Would give you that bit more propeller clearance!
    Just trying to help.

  • @anakinseviltwin
    @anakinseviltwin 11 лет назад

    Is there a way to modifiy this drone, or another one of your designs, to carry more payload for more batteries/onboard equipment?

  • @RoboTekno
    @RoboTekno 12 лет назад

    Again, nice video. You seem to have perfected your planes :D
    Also what's the reason for the long display of one picture at the end of some of your videos?

  • @KeyLimeLemon4U
    @KeyLimeLemon4U 12 лет назад

    How did the flight go?

  • @JohnnyT0464
    @JohnnyT0464 12 лет назад

    What power set up did you use... what kind of endurance did you get? Why did you go from the the 5.8ghz to 2.4? Recommendation or just experimentation?
    I had the exact same problems with my EagleTree OSD. It does not handle elevon mixing at all. I have no choice but to have Standard Aileron and Elevator setup. Same with RTH... TOTALY UNRELIABLE...! LOL

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    I think larger chord is definitely a valid option, probably a good idea for heavier payloads. The PD XR actually turns out to fly very fast, and I might have preferred to have a 7" airfoil chord on the main wing to lower the wing loading. Still a work in progress.

  • @7daniel49
    @7daniel49 12 лет назад

    yes, but quality is lost. im pretty sire it records what you see on ground. someone please correct me if i'm wrong.

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    I have not, but I'm open to suggestions.

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    So far this is just a theory, but I can say it's that powerplant as shown is very powerful and very quiet.

  • @jlions72
    @jlions72 Год назад

    You have no control over this model turning on the ground ..? or turning in the air I do not see rudders ..? Please explain ..? I dont get it again ..?

  • @ExperimentalAirlines
    @ExperimentalAirlines  11 лет назад

    The CG happens to be at 15" rear of the canard leading edge, which is the middle. But it's really a coincidence. I used the online calculator referenced below and used trial and error to optimize the CG.

  • @nieder99
    @nieder99 12 лет назад

    I had the same issues with my elevon setup with the Nova. I ended up having to flip one servo over to get it to work. I also mechanically limited the travel (control horn size) to keep it from being able to apply a huge control surface deflection. Once dialed in though i've had good success with it.

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Oh I did that, and the Nova OSD delta mix worked fine for regular flight. But for RTH the servos must be physically oriented a certain way to continue to work as elevons. It's as if the IR sensor leveling function only inputs to the aileron "channel", and ignores the elevon mix. It's not a big deal, I just resent having to flip and remount the servo. I'll probably just build a 3-axis standard control plane and use the Nova OSD RTH on that.

  • @nieder99
    @nieder99 12 лет назад

    the nova needs both servos operating in their native directions (i.e. you can't have one set as reversed or inverted in your Tx) other than that you just have to set up your tx in the standard delta wing config (no different than if the nova weren't installed on the plane) and get a switch working for the RTH (i used the flight mode switch on my DX7).

  • @yrtbgn
    @yrtbgn 12 лет назад

    where is the flight video ? :)) nice plane and nice video.

  • @IteKLF
    @IteKLF 12 лет назад

    You would get a more efficient plane with a two blade prop (or even a one blade propeller).. or will it touch the ground?

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    It's Readi-Board foamboard from the Dollar Tree store. It's 5mm thick. Not Depron. See Armin Wing construction videos for more details.

  • @Ampersful
    @Ampersful 9 лет назад

    Your a good designer .

  • @nieder99
    @nieder99 12 лет назад

    no tutorials i can think of. its discussed somewhere in the huge nova thread on RCgroups. If you can't get the elevons to move correctly without reversing a servo on the Tx then based on my experience your only option is to physically reverse/flip the servo over on your plane. This is because the nova has no clue about any of your Tx settings. I assume "servo dir" calibration during nova setup is supposed to correct this but in my experience it did not so i flipped the servo and now it works

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    I believe our thinking was identical on this. The stick calibration seems like a hoax now, since it doesn't seem to influence the servo direction in RTH. I think I'll just reallocate this OSD to a standard planform aileron + elevator plane and call it good. Thanks for explaining. I was feeling like I was losing my mind a little bit.

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Search for "Cabelas carbon hunter" to get a starting point. The "spine" designation is not too important to us RC builders. The length will usually be 32". Any basic carbon arrow will do.

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Pretty much all the ReadiBoard comes from the Dollar Tree. If you are outside North America you might have to look around for some good foamboard. There is some in the UK and Europe. 'Kapa-Line' is one idea.

  • @zero00tolerance
    @zero00tolerance 12 лет назад

    How do balance the CG on this plane please thankssss

  • @ExperimentalAirlines
    @ExperimentalAirlines  11 лет назад

    I use about 3 degrees downthrust, no sidethrust adjustment. This plane will actually do pretty well with zero adjustment especially if you kick up the canard a couple of degrees as recommended. I don't see any advantage to splitting the elevons into separate ailerons and elevators. I have used elevons on the canard and it worked well but increased the complexity.

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    It did pretty well. The landing gear were too flimsy, now replaced. This Peace Drone is somewhat heavier so it flew noticeably faster. The powerplant was awesome, definitely a keeper. The Lawmate 2.4GHz video transmitter turns out to be very finicky about power supply, so FPV was unacceptable. I've installed a new power supply with much better video link. The OSD worked well except that I'm going to abandon the return to home function for this plane. Problem with elevon configuration.

  • @paydetman
    @paydetman 12 лет назад

    I like seeing landing gear on your planes. There is something about taking off from the ground. Hand launching is great but the buildup of a great takeoff has no comparison (In my opinion)

  • @poobertop
    @poobertop 11 лет назад

    Is there a reason why you add a 5 minute picture to the end of your videos?

  • @hbelcher3559
    @hbelcher3559 8 лет назад

    why does my APD climb badly out of a turn?
    flies great just out of a turn it noses up hard.

    • @ExperimentalAirlines
      @ExperimentalAirlines  8 лет назад +1

      +h belcher Email me at experimentalairlines at gmail and we'll discuss.

  • @nieder99
    @nieder99 12 лет назад

    i mean unscrew/unglue your servo from your wing and flip/reorient it so its excursion on the control surface is opposite from it is now. This is you manually reversing your servo vs. you configuring the menu on your tx to reverse it.

  • @maddogrk1
    @maddogrk1 10 лет назад

    Can the peace drone be used as a trainer, for regular RC flying, not FPV?

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    About $1200 for every single item you see in this video associated with the operation of this plane: airframe and powerplant, GoPro Hero2, 2.4GHz transmitter and receiver, Spektrum DX7, DragonLink Long-Range transmitter and receiver, other random batteries and stuff. The plane itself was only about $100 though.

  • @TimJC513
    @TimJC513 12 лет назад

    It is possible to record to the GoPro and use its video out feature for FPV simultaneously. This is great for getting clean HD footage of the flight, but will not have the onscreen display (OSD) data.

  • @IteKLF
    @IteKLF 12 лет назад

    That might be. If the back of the wing is really sharp it would be better. Distance between propeller and tailing edge will alsp help. But the two bladed propeller has more tangential tip speed and that is making more noice!

  • @RCcrAzY1234
    @RCcrAzY1234 12 лет назад

    how have i not subscribed to you yet?!?!?!

  • @salvatorealessandrino945
    @salvatorealessandrino945 2 года назад

    Hallo are their plans available thank you

  • @JohnnyT0464
    @JohnnyT0464 12 лет назад

    Ed.... you are going to find that using RTH on any OSD system is hit or miss. Don't rely on it to save your plane. Only use it when all else fails. Best bet is to do a thorough pre=flight of the whole plane and systems. Also... try not to push the envolope with the video sytem. That will give you the best chance of bringing the plane back home. Good luck on your maiden flight.

  • @ejazdahriejazdahri4313
    @ejazdahriejazdahri4313 3 года назад

    Where is cg piount of this

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    I figured for $20 extra I wouldn't mind the insurance of a RTH, but intending never to put myself in a position to use it. Seems like the verdict is pretty sketchy on these NOVA OSD's. Might just disable it and use the OSD function....which is very nice IMO.

  • @nieder99
    @nieder99 12 лет назад

    Haha sorry you had to go through that. Maybe there is some other way but after my hours of experimentation and headaches i just bit the bullet and flipped the servo ;) this was on my Mikey's RC FPV V3 design so it was a bit easier than with a glued and taped Armin wing.

  • @TheIronSavior
    @TheIronSavior 12 лет назад

    You know, youtube lets you upload a still photo to use as the thumbnail. You don't actually have to use the many minutes of silence at the end. The photo doesn't even have to be a frame from the video itself.

  • @RoboTekno
    @RoboTekno 12 лет назад

    i see, thanks. It's too bad youtube hasn't given us the function to chose any frame in our video as the thumbnail :(

  • @johStephan
    @johStephan 11 лет назад

    Nice design!!! Did you ever consider to use an impeller instead of a propeller? you can firstly use an inrunner (more efficient) and (secondly) the the impeller is by design more efficient. Also the airodynamics of the planes tip looks not that great.

  • @ExperimentalAirlines
    @ExperimentalAirlines  11 лет назад

    I would love to quit my day job and make planes all day, but sadly I barely have time to make planes for my own fleet. I couldn't honestly promise to build a plane for you any time soon. There is a skilled PD builder who goes by kross1 on rcgroups who you might ask. Sorry for that, I would love to do it for you but it's just not in the picture this year.

  • @tamz2
    @tamz2 12 лет назад

    Now you are gonna have to stop this Ed I wanna make every one I see.....on a serious note another good job i love it....you are not by any chance sponsored by gift card manufacturers?

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    I do not sell anything but I would be happy to assist you in building one for yourself!

  • @JohnnyT0464
    @JohnnyT0464 12 лет назад

    $1,200 bucks sounds just about right. Worth every penny. Can't imaging spending it on any other hobby. Just Sayin...!

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад +1

    You must be an old-school RUclips partner to upload custom thumbnails. I am not yet that type of partner. They have a new "partnership" program, but it only means you monetize videos. No other special privileges. So still a bummer of the "workaround thumbnail" for now....

  • @stuj026
    @stuj026 11 лет назад

    Hi Ed,,Would it be possible for you to make up a peace drone mkll ,complete with electrics and camera(i have the batteries) and send it to me to the UK ??I have a paypal account to pay for it,,,I'm not the best at building....Stu.

  • @a100nick
    @a100nick 11 лет назад

    for anyone who is wondering thats 3.6 pounds of thrust

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Ha-ha, no sponsors at all, but I do burn through some gift cards to be sure!

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    For RUclips thumbnail generator to find a decent thumbnail.

  • @ExperimentalAirlines
    @ExperimentalAirlines  12 лет назад

    Search for adamone rchomepage com/cg_canard

  • @mickcarson8504
    @mickcarson8504 10 лет назад

    It's just a waste of time. Whatever technology is there today will be out-dated after a month. Sadly, what you buy today will be superseded by new ideas and technology a week later.

    • @Lactuca
      @Lactuca 9 лет назад +6

      would your solution be never to do anything?
      i bet your fun at parties
      eat your veggies

    • @culhand
      @culhand 9 лет назад +1

      This video is almost 3 years old, and the same tech is still used. Troll elsewhere because you have no idea wtf you are talking about here

    • @mickcarson8504
      @mickcarson8504 9 лет назад

      *****​​​​​​​​​​​​
      LOL I really don't fly rc planes and don't know anything about technology, you say?
      Wrong!
      I have 4 helicopters, 1 Quadcopter, 7 boats, 2 gliders and 1 plane, all of various sizes. The oldest helicopter that I have is the 1974 Kavan Jetranger with size 60 engine, plus 2 40 inch long speedboat built around the same year.
      The rest were added in 2012-14 after I decided to expand my collection and replace the ageing KO-Digiace 4 channel rc system to that of 6 channel Hi-Tech 5Ghz system. Today, all the old frequency transmitters have been replaced by new transmitters that have binding or unifying capabilities so I can fly all of them with one system.
      I am now hoping to purchase another Quadcopter with GPS and a crystal clear widescreen camera. I am not sure which one is the best. Some say the q500 is the best, other say try the Walkera, still there are better machines with HD cameras. The problem is, what brand are they? I am still searching...

    • @mickcarson8504
      @mickcarson8504 9 лет назад

      *****​​
      You seem to have lost the plot. But, it doesn't matter anyway. No point going further. It's hard for you to understand. 

    • @mickcarson8504
      @mickcarson8504 9 лет назад

      *****​
      You still seem to have lost the plot. I wasn't discussing about frequency changes, I was actually commenting of old system replaced with todays system. In the old days of RC Flying you had to wait your turn to fly a plane or whatever, because of fixed frequencies, e.g. channel 18, 19, 20, 21, 22, 23, 24, 26, 25, etc. Not so these days. That's why I changed my RC models with today's modern system where you can use up to 10 or more models with one Transmitter, instead of having to carry 10 transmitters on field. You seem to be lost in my comment there. Re-read it again. I am sure you missed the part of '...my old ageing models having prehistoric rc systems'.