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#1
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Turbine to RC transition
Some friends bought me a really spiffy coaxial RC helicopter for my
birthday. Holy canoli these things are a stinkin blast! A little humbling at first too, it took me a while to figure out the trim hickamajobs, and flying one without it being trimmed is damn near impossible. I crashed pretty badly once and it cost me a set of rotor blades, truly embarassing. I've seen some comments that they fly like the bigger ones, and to a limited extent I agree, but mostly its its own animal and my more general knowledge only helped a little. I mostly have to follow the thing around and stay behind it so that I don't get confused with the controls. Trying to visulize being inside is still very confusing for my old synapses if its tail is anywhere between 9 and 3 o'clock. The whole reversed sensing / control thing led to a really simple circuit idea that could make it so that the controls were always oriented for the observer/controller. If you put an ADF circuit and a slightly more complicated antenna on the helicopter so that it listened to the phase and doppler from the transmitter's frequency, you could pretty simply make it so the helicopter always knew where it was relative its controller, and mix it in to the servo controls. This way left is always left, and right is always right. The circuit would be pretty dirt cheap. Anyone know if this has already been done? I know the rc purists will say bah , and poo poo the whole idea, but truth is youre cheating anyways with that lil yaw gyro keeping the tail in place automagically. Besides, my idea isnt just applicable to these lil choppers, it would work for every ROV that is controlled by an observer physically watching it. Bart |
#2
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Turbine to RC transition
"B4RT" wrote in message ... Some friends bought me a really spiffy coaxial RC helicopter for my birthday. I suspect you don't realize this is not a radio control NG. |
#3
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Turbine to RC transition
jim.blakely wrote: "B4RT" wrote in message ... Some friends bought me a really spiffy coaxial RC helicopter for my birthday. I suspect you don't realize this is not a radio control NG. I suspect you are an idiot. |
#4
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Turbine to RC transition
"JohnO" wrote in message oups.com... jim.blakely wrote: "B4RT" wrote in message ... Some friends bought me a really spiffy coaxial RC helicopter for my birthday. I suspect you don't realize this is not a radio control NG. I suspect you are an idiot. Have a bad day there JohnO? Don't over-read my post. I've been called worse than that by better than you. Stay focused on the discussion. |
#5
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Turbine to RC transition
jim.blakely wrote: "JohnO" wrote in message oups.com... jim.blakely wrote: "B4RT" wrote in message ... Some friends bought me a really spiffy coaxial RC helicopter for my birthday. I suspect you don't realize this is not a radio control NG. I suspect you are an idiot. Have a bad day there JohnO? Nah, pretty good day actually. Why? Don't over-read my post. I've been called worse than that by better than you. I'm sure you have! Stay focused on the discussion. Thanks for the tip. |
#6
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Turbine to RC transition
"jim.blakely" wrote in message news:75U9g.4970$Sh3.4657@trnddc05.. I suspect you don't realize this is not a radio control NG. Yes, I know that. I also know that theres some very loyal readers in here who fly them. I was commenting on the differences between my 3000lb helicopter and three 3ounce one, hence the title. Bart |
#7
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Turbine to RC transition
Insults from full sized pilots who don't care about RC aside, that's an
interesting idea about the ADF and antenna circuit. As an RC helicopter pilot, I'm not sure how it's going to help you. You still need to direct the model to where you want it to go, relative to where it is and it's orientation to you. I guess I'm missing the point, but it seems to me that, as hard as RC helicopter are to "learn" to fly (they're really not that bad once you know how. You full size pilots should understand that statement! ;-) ), that if what you're suggesting would work, someone would have tried it by now! By the way, I'm glad you're enjoying the coaxial model, and I don't mean to burst your bubble but, of the folks I know that have tried them, most say the new electric coaxials are dirt simple to control relative to the standard configuration (main and tail rotor) style models. If you think what you have is challenging, try a standard model. ;-) You're right though, they are a stinkin blast! :-D Fly Safe, Steve R. "B4RT" wrote in message ... Some friends bought me a really spiffy coaxial RC helicopter for my birthday. Holy canoli these things are a stinkin blast! A little humbling at first too, it took me a while to figure out the trim hickamajobs, and flying one without it being trimmed is damn near impossible. I crashed pretty badly once and it cost me a set of rotor blades, truly embarassing. I've seen some comments that they fly like the bigger ones, and to a limited extent I agree, but mostly its its own animal and my more general knowledge only helped a little. I mostly have to follow the thing around and stay behind it so that I don't get confused with the controls. Trying to visulize being inside is still very confusing for my old synapses if its tail is anywhere between 9 and 3 o'clock. The whole reversed sensing / control thing led to a really simple circuit idea that could make it so that the controls were always oriented for the observer/controller. If you put an ADF circuit and a slightly more complicated antenna on the helicopter so that it listened to the phase and doppler from the transmitter's frequency, you could pretty simply make it so the helicopter always knew where it was relative its controller, and mix it in to the servo controls. This way left is always left, and right is always right. The circuit would be pretty dirt cheap. Anyone know if this has already been done? I know the rc purists will say bah , and poo poo the whole idea, but truth is youre cheating anyways with that lil yaw gyro keeping the tail in place automagically. Besides, my idea isnt just applicable to these lil choppers, it would work for every ROV that is controlled by an observer physically watching it. Bart |
#8
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Turbine to RC transition
which coax RC model did they give you, and are real kamov style twin rotors easier to fly? Steve Roberts |
#9
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Turbine to RC transition
I've often thought about some orientation aid for RC aircraft, but I
think it would cost too much to make something that was accurate. You don't really need it for helis anyway, since you can fly in any direction. I guess I'm saying "bah". And we're not cheating with the heading-hold gyros! It is possible to fly an RC heli without a gyro, but it's a lot of work. Esspecially in the wind. There is an inbetween option; most hobby-grade gyros have a "rate" mode, where it simply slows rotation to sane speeds, rather than holding it in one direction. Those cheap coaxials look like fun. If you want something that will fly a bit more like a real heli and will do aerobatics, the T-rex is a really good little machine. All the fun of a "real" RC heli, but not quite as expensive. RC helis will have to do for me untill I can afford lessons in a full-scale. |
#10
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Turbine to RC transition
wrote in message
oups.com... I've often thought about some orientation aid for RC aircraft, but I think it would cost too much to make something that was accurate. You don't really need it for helis anyway, since you can fly in any direction. I guess I'm saying "bah". I don't have a clue how something like that would work. It's just a matter of learning the reflexes for the different positions. Flying backwards or sideways only adds other control requirements that aren't necessarily intuitive. There's also the added fact that all the right side up forward, backwards, and sideways stuff can be done while flying inverted which scrambles the required control inputs yet again. In the long run, I firmly believe that by the time you get some kind of electronic aid working for all of this, you would probably have worked it out in your head and be able to fly it more smoothly to boot! And we're not cheating with the heading-hold gyros! It is possible to fly an RC heli without a gyro, but it's a lot of work. Esspecially in the wind. There is an inbetween option; most hobby-grade gyros have a "rate" mode, where it simply slows rotation to sane speeds, rather than holding it in one direction. As someone who did his initial hover training without the benefit of a gyro, they were just becoming popular back in 1982 and I didn't know they existed for the first few months that I tried to learn to hover, it's a lot easier to fly the model in a modest (10 mph or so) breeze. The model wants to weather vane into the wind which becomes a natural yaw damper. The gyros we had back then were mechanical. A couple of brass fly weights attached to the output shaft of an electric motor that was mounted on a gimble with a potentiometer like those used on the control sticks of the RC transmitter. All it was, was a yaw damper and, by todays standards, not a very good one! The modern "gyro" is all solid state and all of them that have heading hold capability also have what we call a "normal" mode which behaves essentially like the old mechanical units did 20 years ago, albeit with much better precision. Those cheap coaxials look like fun. If you want something that will fly a bit more like a real heli and will do aerobatics, the T-rex is a really good little machine. All the fun of a "real" RC heli, but not quite as expensive. Generally true although you have to be careful with models like the T-Rex. They offer this model in a fully upgraded version with all the bells and whistles. It sells in the neighborhood of $500 or so, give or take a little depending on which hobby shop's advertisement you read. Then you get to buy batteries, RC flight control servos, receiver, gyro, etc. You can build and fly a "nice" IC (internal combustion) powered model for that kind of money! Even those who buy the base version of the model eventually start upgrading it as the stock plastics parts don't handle a crash as well and over time, they've got all the metal upgrades on there, only they've paid for them one at a time so now that $500 model turns out to be a $650 model. They can get you, one way or the other! RC helis will have to do for me untill I can afford lessons in a full-scale. That's one area that you and I definitely have in common! :-( Good luck & Fly Safe, Steve R. |
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