Vintage Cox PT-19 UKIE Trainer converted to Brushless Motor experiment.
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- เผยแพร่เมื่อ 4 ต.ค. 2024
- When I started flying at a very early age, I started with the Cox PT-19 Trainer and began entering Pattern Ukie Contests a couple years later. Finding a Brand New, unopened PT-19 on Ebay and winning the bid, I decided not to open and fly it as I originally thought I would. So I found another one on ebay and won that bid too. I decided before I use the stock Glow Nitro engine, I would see, just for the heck of it to try to fly it with a brushless motor. Here is how it went. These were my stock antique Cox planes destroyed in the fire.
• Vintage Cox Control Li...
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The PT-19 was also my first. I am 45 now, still trying to find one. I want to go back to my childhood. I had my best days flying the Cox PT-19. Thanks for the great video.
Yes, a lot of people learned on and loved this plane. I have since put the Cox engine back in it, and will fly it again when the wind isnt so strong some evening this summer. I have since made some other videos on UKie, so hope you get to see them. Thanks again, Clarence. Check this dizzying video out... th-cam.com/video/-dO55a5ch9Q/w-d-xo.html
When I started flying at a very early age, I started with the Cox PT-19 Trainer and began entering Pattern Ukie Contests a couple years later. Finding a Brand New, unopened PT-19 on Ebay and winning the bid, I decided not to open and fly it as I originally thought I would. So I found another one on eBay and won that bid too. I decided before I use the stock Glow Nitro engine, I would see, just for the heck of it to try to fly it with a brush-less motor. Here is how it went.
I always remember the smell of the Cox fuel , my Pt 19 didnt survive many flights ( no experience enough) but gives a lot of joy in those days :-)
Thanks for the comments. It was all part of the learning curve.
You take me very happily back to many hours of my youth, I just loved my PT 19!
So happy to hear that. Here is a newer video of me flying the PT-19 with the Cox engine. th-cam.com/video/BU0z7ddwslY/w-d-xo.html Thanks much.
I had the cox PT19 back in 1985.. I remember begging my dad to buy it for me.. I flew it so much ... I enjoyed every minute of it, except the getting dizzy part.
So glad to hear that.. Thanks so kindly. I would bet if you liked this, you will like to see my latest video of my 63 year old Cox PT 19 U Control recent flight.
th-cam.com/video/BU0z7ddwslY/w-d-xo.html
I really enjoy your videos! The Cox PT-19 brings back a lot of great childhood memories of getting dizzy lol. I had several Cox and Testors planes and cars when I was a kid, but I didn't get my first PT-19 ( the white version with the red decals) until Christmas in '84. Two years later, I got the standard yellow and blue version. I put many flights on them before their demise. A good friend is sending me a never flown PT-19 so I can re-live my childhood again. I feel like a kid at Christmas waiting for it
Right on! Glad to hear that. I recently made a video on the PT 19 with the .049 you might want to watch before you fly yours. Here are a couple of links. I am so happy you like my videos. Thanks so kindly. Here is my 63 year old Cox PT 19 U Control recent flight. th-cam.com/video/BU0z7ddwslYU/w-d-xo.htmlkie or Tethered, Speed, Stunt, and getting Goated by Adam's Goat ! th-cam.com/video/HdmXA0Xc1ew/w-d-xo.html
dave this made me dig out my cox pt-19 as new in box, looked at it found some new rubber bands and then put it away for a sunny day! also found my RTP kit, just too many toys. thank you. regards alan.
Thanks so kindly. I would bet if you liked this, you will like to see my latest video of my 63 year old Cox PT 19 U Control recent flight.
th-cam.com/video/BU0z7ddwslY/w-d-xo.html
hi tone from ENGLAND. i too love the pt19.. it was the first freeflight id ever see ..in see though blue an yellow cox 049. just magic.. im now 61. just about to build a 82".. atb tone
Hello Tone and thanks kindly. I would bet if you liked this, you will like to see my latest video of my 63 year old Cox PT 19 U Control recent flight.
th-cam.com/video/BU0z7ddwslY/w-d-xo.html
I just love all of the old Cox airplanes and especially the PT 19. I really like the tethered idea....I am 62 so i can get dizzy much easier walking in circles lol. Only if i had a time machine that i could go back and buy all those cox planes lol . They sure go for a pretty pinny on e bay.. Love your videos
LOL. I agree. Time machine would probably get me in trouble. Thanks very kindly. I appreciate your comments.
Dave, your videos are awesome! I too flew control line back in the day. I never got dizzy when I was 11 years old. But now, I'd be stumbling around like a drunken sailor.
Haha. I know the feeling well. Thanks much, Ed!
Nice one Dave,a new lease of life for the Cox PT-19 enjoyed your video.
I appreciate that Angel. I have since put the Cox engine back in it and will fly it again, when the wind goes down some evening. Thank you.
We have the same problem here Dave in the UK high winds stopping us from flying.
Loved watching the pylon electrics indoors. Reminded me of my little fishing-pole "Wittman Buster" raceplane! No engine, I just reeled out the long (nylon) line and whipped it around me as fast as was needed to stay airborne. I could wingover but never a loop ...
While watching your indoor flying, I imagined a little red R/C scale Fokker Triplane with a reostat motor -- allowing it to fly slow for figure eights and fly-bys. Then rev it up to do loops!
Great job bringing your legendary Cox PT-19 into the 21st century. Seems like the motor is just not enough power. Looked like you were constantly giving up-elevator keeping it mushing to stay airborne. A more powerful motor?
Thanks for the great video!
Thanks so very much for your story and great to hear. But since this was 3 years ago. I would bet if you liked this, you will like to see my latest video of my 63 year old Cox PT 19 U Control recent flight. th-cam.com/video/BU0z7ddwslYU/w-d-xo.htmlkie or Tethered, Speed, Stunt, and getting Goated by Adam's Goat ! th-cam.com/video/HdmXA0Xc1ew/w-d-xo.html Thanks again.
My first plane was also the Cox .049 PT19, got it for Christmas 1985. Will never forget the first time I fired it up. It just screamed it's head of, and the smell of the nitro methonal exiting the exhaust has hooked me ever since. I still have the motor just sitting waiting to be put to use once again.
Thats great. Time to put that engine in something for fun and get that Nitro Smell!
City's park Tennis court , no net ( 🇨🇺's do baseball , Sir lol) & early 70's is where we flew all these Cox's plane. I have no pics, but our haircut looks the same. Beautiful times, Thanks for sharing .👌
I appreciate that and can relate to the tennis court flying. Thanks Kindly.
Bought back memories from 50 + yrs ago as an 11 year old I had one of these with a cox .049 as a birthday present sadly , very sadly, as I recall it didn't survive my first attempt at line controlled flight, I couldn't find anywhere in England to get spare parts.......thanks for the memory. Please keep the vids coming.
I appreciate your story and comments. Glad you enjoyed the video, Rob.
I had a Cox PT 19 as a kid as well. That was in the 70s though. Seeing that new one in the box sure brought up exciting memories. I later had a P51 Mustang too. Thanks for showing.
Great to hear you had one too. Thanks kindly for your comments.
as always thank u mr. Herbert for another great vid. the cox pt-19 is where i got my start 30 years ago
That's great to hear that so many of my viewers have had the same plane and start. Thanks.
Very nice determination and it worked, creative engineering.
Thanks a lot William.
Hi Dave,
My first plane was the Cox P-40. I was also 10 when flew it for the first time. That Pitts is a nice looking bipe. Shame you lost so much in the fire, but you still have all those memories. Your need more round and round practice. :-)
Thanks Don. I dunno about the round and round practice since I didnt crash, but I sure was dizzy! Longer lines will help....sort of. I had a PT 40 burn up in the fire. I always liked that one too. Thanks again and happy flying.
Oh very nice video!!!!i just love 2:32 that was a beauty...i’m sad you lost it ;((((
Thanks Blaz, I appreciate that and your comments. I absolutely hated losing that Big PT-19 for sure. It's all part of a test, I guess. Happy flying to you from the Midwest USA.
This is a great video. For newcomers to your channel it really hits the core of your interest in RC flight. The tether plane background is uniquely poignant to you experimentation with 'battery tethered' RC helicopters. Pushing the technological advancements with the materials at hand (pun). Thanks for your vids. I haven't checked in for a while but I happy to see that you are still sharing your passion for flight.
Thanks very kindly for your comments. I really appreciate them and your viewership. Lots have happened since the fire, so please check in again once in a while if you can. Thanks again.
@@NightFlyyer The reason I have not checked in recently has more to do with my career; and finding my CG while being a good husband and Dad (mentor) for my 3 & 6 yr old Daughters. A lot of flight simulator, if you know what I mean. I learned how to be a practical, efficient and conscientious rc hobbyist from watching your videos, probably 6 years ago. Since then it's my rare relax time. Thank you Dave.
@@caseMasterxL Gotcha. I know exactly what your talking about. Raising a family is a second job, but glad you are doing well and hopefully you will visit again when you get a free moment. Thanks kindly for the kudos.
That's a great Dad! Thanks so kindly. I would bet if you liked this, you will like to see my latest video of my 63 year old Cox PT 19 U Control recent flight. th-cam.com/video/BU0z7ddwslYU/w-d-xo.htmlkie
The PT-19 was one of the few Cox airplanes that would glide a little after the motor shut off. Most Cox models dropped like a brick after they ran out of fuel, especially that tiny little biplane that had the tiny, but screaming little motor.
I also had a PT-19 many years ago, was alot of fun. Don't think I would change over to electric though. Thanks for the video. Shalom
Yep, well I only did the electric to try it, as it was really easy since the motor fit the same mount. I have already changed it back to Glow Engine, so not to worry. I will fly it this spring when It warms up and I have more room and full length lines at the airport. Thanks.
omg that was my first plane on a string back in the early 60s lol
Glad to hear another person had one. Great.
Yeah. I started with a uc cox 300 extra which was hard to start, and I always crashed. Then I got that pt19, and had many successful flights. I would even fly at the edge of a frozen pond and try to time my glide so as to land on the smooth ice, and not crash on land.
That is fantastic. Here is a newer video of the PT 19 as I flew it last summer. Thanks. th-cam.com/video/BU0z7ddwslY/w-d-xo.html
That is so neat Dave! Two of my friends when we were kids had those,so I bought a Testors Cosmic Wind control line and messed with it back in the late '60's.That pic of Parks College was way cool,I grew up just a short drive from there in the beautiful city of East St.Louis,Ill.(just kidding about the beautiful city part).Gosh it is such a shame about loosing your birds to a fire,as you had a collection to be very proud of.You didn't loose your spirit though,and that is what matters the most now!!
Those are very kind words and a great story. Thanks very kindly!
My first was a T-28 with an .049 engine. Our yard was small so we had to cut the lines back to 25 or 30 feet!. Thing was so fast you couldn't keep up with it. Then I picked up a little Cox Biplane with a .017 I think or a .019. I never could get it to stay started and had to return it. Probably only needed a glow plug, but I didn't know that back then.
It most likely was a Cox .020 as they made .010, 020, 049,051,099 in their line up. I wish I had the smallest of those engines to play with today. Thanks for the story and comments, Juan.
Great story
Thank you. I appreciate that.
Like so many this was my first glow powered plane, I get dizzy thinking about how dizzy I got flying it back in 1973!
So true. I will be flying this (soon as snow clears) with Nitro again and the proper length lines, so please stay tuned. Thanks.
I’m building a u control as we speak just like the one I had when I was 10. A old sterling kit
Great. Sterling models were great fliers and definitely capable of doing control line stunts.
I love when you pull out these cool old planes! A couple of my friends had them when we were kids but I never got to see them fly. This would have been something I would want when I was a kid, heck I wanted ever cool rc toy I saw.
I just had them all since I was a kid till the fire took them away. I just keep looking for old stuff today. We didn't have RC toys when I was a kid like there is today. RC was just coming of age. Ukies like this were basically what most kids could afford and could play with along with their erector sets. LOL Thanks and happy flying.
I got this plane for my b-bay in 1980 and had a blast with it. I have a new one of these in the box, maybe I will convert it to electric. I also have the Piper Cherokee version.
Great story. That new one in the box is worth good money, as I found out when I bought mine, so maybe not to open it, but if you do, electric will keep it clean. Thanks.
That's a lovely little Honda @1:17. I think it might be 125cc? I have something very similar parked outside, though 175cc and with shrouded telescopic forks.
I was interested to see your tethered Trojan. In the 1970s we used to send the current to the plane along the flight wires themselves, via a hand-held rheostat throttle and a ball bearing for each wire. The bearings conducted the current to the wires,which were insulated with shellac. In England this was known as "electric round-the-pole flight, or RTP for short.
I greatly enjoyed seeing you fly the PT-19 with a brushless setup. It must be luxurious to have throttle control!
Yes, that was in Japan and the 125 cc bikes were all that were allowed for Service members. I drove that bike from Iwakuni to Osaka to see the worlds fair in 1970. It was a great bike and we just kept passing it on when we transferred home. Yep, throttle control is always nice. I have several videos of ukie flying also on my website you may enjoy. Like this one...and thanks much. th-cam.com/video/HcpK4N-Yg3A/w-d-xo.html
@@NightFlyyer I'm glad you took the chance to really see Japan while you were there. There's nothing like a road trip on a small motorbike to let you see and experience the daily life of a region. My wife wonders whether that little Honda might still be roaring around in Japan somewhere. Sadly, their vehicular laws tend to discourage people from keeping old vehicles.
@@Del350K4 I loved Japan. Saw a lot. That bike kept me out of the bars. LOL. It might still be going, but this was 54 years ago. Thanks again.
I learned on the Cox PT-19 in the 60’s. Hey, in the opening picture, I believe the wings are on backwards 😊
Absolutely not. Come on! I just looked at the box and that is the picture on the box. Here is the newer video and very clear compared to this old video. The wing is very visible there and is flown with the stock Cox .049 engine. th-cam.com/video/BU0z7ddwslY/w-d-xo.html
lol….seriously, it looks like the trailing edge of the wing is in the front….which would also explain why the line outlets are on the starboard wing instead of the port…
@@marksvarverud130 All wrong! I'm no beginner, you know!
Oh, I don’t think you are a beginner at all….no criticism to you. The newer video shows the wing on proper. No big deal at all.
That was my first plane as a 10 year old in 1967. All my friends had one too.
That's great, I was 10 in 1958 when I got mine as that seems the age when we all started to get involved with these planes. Thanks.
Brodak sells stuff for doing electric control line, been wanting to get a kit to build a 1/2a trainer to learn with.
Go for it and have fun.
Excellent conversion but i prefer nitro powered forever.
Me too, but to compare I had to do it. LOL. Thanks so kindly. I would bet if you liked this, you will like to see my latest video of my 63 year old Cox PT 19 U Control recent flight. th-cam.com/video/BU0z7ddwslYU/w-d-xo.htmlkie
Would be neat to convert that to 3 or 4 channel RC.
That's a thought, but would kinda defeat the whole control line concept. Thanks.
I did try that. Circa 1997 Skymasters MI. 2 mini servos and a small battery pack. My plan was to fly it CL style with a single string, then let go. I could not control the plane or even keep it level. There was some rotational or gyroscopic physics that was fighting me. So, never got to the second part of flying it as a RC plane. Plus it was cold and windy.
Please be careful at your age you make a bad smak when you get dizzy you could break your hip Please stay ok friend!
Yes I will. I will be making a few more videos with bigger Ukies (soon as Snow clears) with longer lines. If I just to horizontal figure eights, I wont have to go round and round. Thanks kindly, Pieter!
I cannot even get the ThunderTiger 50 running properly on a propboat. lol. Its an older engine and even though I put new bearings in it, my guess is the thing is more worn that I am figuring on.
Could be. Try 15% Nitro and and a Starter.
@@NightFlyyer I replaced the carburetor with one from an OS. The collar was just a tad different in size. I wrapped a couple wraps of metal duct sealer tape around it and it tightened right up using the set screw. I then used the seperate main jet that mounts on the back of the engine( now mounted on the corner of the engine mounting frame) And after a bit of tuning was able to get full maximum power from the Thunder " Chicken". I have since figured out this old Dumas Airboat kit needs an epoxy paint job on the bottom as the original paint is not correct and is causing the airbox to " hang up" in the snow. Its just not slippery. The nitro fuel is also affecting the original unknown blue paint.
Thanks for sharing :) Was hooked in -74 and got my first uc in -78 I think it was a Cox ?Hustler? and my first rc crash in -80 with a Graupner Piper Pa 18 Super Cub Still loving flight Thanks again :)
Great story and your still going strong. Good. Thanks.
Cox U-Control airplanes, with the exception of the large Comanche which flies very well on longer lines, all fly too fast on those short lines. Extending the lines makes them unstable and they almost always try to fly towards the center of the circle making the pilot lose control. I know, I tried it when I was a kid. I suppose that excessively high wing-loadings and excess power is the culprit, although I don't think that they would fly at all if the power was reduced very much. I recall that I did have a good experience with the original green Cox Stuka, which flew very well, indeed. Anyway, short-line U-Control is better for young people as they don't seem to become dizzy so readily. Has anyone any information about converting Cox airplanes to R/C?
My friend and a club member worked at Cox and I know they spent many hours finding the ultimate length of the strings. I have many ukie videos and am working on more now. I have put radios in them too, and even an rc tethered version that did not make me dizzy. Just search my channel for u control or ukie and you will see them. Thanks and for sure the Stuka was robust and fun to fly.
@@NightFlyyer Thank you for your reply. I’m certain that Cox did a lot of good engineering including determining practical line length. Those 30’-35’ lines would have been fine if using them did not cause the airplane to complete each circle so quickly (r .p. s.), i.e., high angular speed. If the airplanes could fly significantly slower, thus significantly reducing the r. p. s., the experience of flying them would be infinitely more enjoyable. However, for many necessary reasons, the problem of keeping slow-flying airplanes taught on their lines would be virtually insurmountable as we know that a good deal of control-line flying depends upon centrifugal force. Slow control-line flight of small airplanes is not a practical reality.
As I progressed in the hobby and later flew larger control-line airplanes on 60’ foot steel lines, the whole thing became so much more comfortable and enjoyable. However, as I grew older, even flying those larger airplanes in larger circles became difficult to do for more than a minute or so as I became more sensitive to dizziness. Fortunately, proportional R/C was then becoming affordable and reliable, so that is where I went. No more dizziness. What a nice change.
I appreciate that it is necessary that small ukie airplanes fly very quickly so that they can fly at all, therefore the smaller circle requiring shorter lines.
I also appreciate that making these classic airplanes out of the plastics and methods that were available in the day was an innovation which made the airplanes more robust and cheaper to manufacture in bulk and accordingly, more affordable, particularly for kids to own than if they had been hand-built from traditional model airplane materials, e.g., silk or silkspan covered balsa, plywood, etc. However, their plastic construction makes these airframes rather heavy for their size, making their wing-loadings very high. This, in turn, means that their estimated Reynolds Numbers (difficult to predict or measure at such small numbers) are extremely low, certainly well below 30,000. A lifting surface with such a low RN produces little lift and will stall at a very low alpha (angle of attack), perhaps 5 degrees or less. Additionally, a single-surface, curved wing produces far less lift than does a double-surface wing. All of this means that the entire airframe must move through the air at a relatively high airspeed in order to maintain flight.
We rightly observe this when we fly small R/C models which flit about the sky while larger ones fly so gracefully and so much more like their full-size counterparts.
I love the old Cox airplanes and have a few literally still hanging around the house. I even have an unbuilt Curtiss Pusher in the original box. The experience of flying models at an early age for so little money was what made the Cox and other prefabricated airplanes so successful and enjoyable. Unfortunately, as I said, turning and turning about for three or so minutes at a rapid speed is for the young. I fly my R/C airplanes whilst sitting in a comfortable beach chair, only turning when I reach for a cold drink. I suppose that tether flying is similar and a good alternative, but like Pinocchio, I was glad to lose the strings. Cheers, mate.
@@Glicksman1 I started flying Pattern when I was 12. That way you did not have to fly around in circles.. Just do loops inside and outside, figure 8s and more. You make it sound way more complicated than it was and millions of folks were successful. I fly rc today at 73 as well as ukie and nitro helicopters. Check out my jets, and bigger airplanes if you get a chance on my channel. Or even this latest version of my Cox .049 engine plane. These You FO's can really handle the wind and are cheap to make. And if you remember the .049 days, you will recognize the sound. In the video description, are links to the videos of my original electric You FO for a less complicated and quicker build than the nitro version. Thanks for tuning in. ~Dave
th-cam.com/video/DeWao5L6FLM/w-d-xo.html
Fun job on the electric set up Dave I too started with a cox PT-19 control line uncle got me was a kid I crashed on the first flight of course until my uncle actually made me wooden 049 kit of a Hellcat with a tee dee 049 boy that engine was very reliable it always stared up and went until one summer night we take it to a dusty baseball field with lights at the field some dirt went into the engine and it never started again. About 10 years ago me&him wanted to give u-control another shot for old times sake I got my hands on Eflite PT-19 450 ARF with park 480 1024 motor 12x6 apc it was ok it used a special esc with a push button start up with a timer to you give a chance run to your handle before take of the only problem that lines didn't have to best pull for inverts so here's what happen to mine lol
th-cam.com/video/x-aaZv_U9SY/w-d-xo.html
What a story. I could see you change your mind at the last second before the crash. I guess there was no way to turn the motor off. I felt pain watching it crash. Well, it's all part of the learning curve, I guess. Thanks for the story and video.
I had to double check this morning to confirm I had glimpsed the flying brick!!! :)~
The flying brick still works too. Thanks Dick.