AVC
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Posted by ken anderson. on 04/07/2018 08:38:04: Posted by AVC on 04/07/2018 08:34:04: Posted by Don Fry on 04/07/2018 07:23:13: Christiano Ronald may play football, but he is a very strange example of a human being. ...to say the least …………………………………………………………………….. agree with you both...but he's a rich one.. ken anderson...ne...1..... all about the money dept. That's one of the reasons (only one) why he's a strange example of human being...
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Posted by Don Fry on 04/07/2018 07:23:13: Christiano Ronald may play football, but he is a very strange example of a human being. ...to say the least
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Nice and tidy job indeed! Will you reinforce the rear strut somehow?
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Nice plane anyway, right back to the origins of the aviation! And it's very nicely finished, good job!
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Posted by Martin Harris on 03/07/2018 14:29:35: Interesting - a conversation with a club member recently - a member of a well known display team and recent national indoor 3D champion - revealed that he uses masses of expo with his extreme control movements. Horses for courses? This is also my understanding, although I have never done proper 3D (not even the "improper" one...)
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Jon, I agree with you in that this is not easy, and I remember having a conversation about cheating with one guy which made perfect and eternal knife edges with a massive Gee Bee R3...using two gyros, one on each axle! This is cheating! Having said that, if someone is keen to get into this hobby, and we make things too difficult for them, they might give up before discovering the "magic" of facing and overcoming bigger challenges. This is especially important when the newbie is a child, I think. By "cheating" a bit at this stage, we may encourage the person to keep going. I use again the example of my kids: before using the expo they weren't able to keep control for more than 3-4 second, but after using them, the older one was able to do five "eight" figures and even recover it in a couple of difficult moments. He learnt more thanks to the "cheat"
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Good summary BEB. As with most things in life, In medio stat virtus
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That's a lovely model, Dave!!
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Nice place, nice video and nice model!! Is it the perspective, or does the model looks a bit tail heavy once in the air?
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It also helps a lot to set the CoG as backward as possible, of course...
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Yes, you are right, but this is for the 3d killers err, fliers... I assume that you are flying a proper 3d model, i.e. oversized elevator, rudder and ailerons (you need them all for a harrier, as you know...). The harries is performed thanks to the flow of air from a big prop hitting a big elevator with a high deflection (45+ degrees), so if you have all these elements, it should work. As for the expo, yes, you need a lot as you are having a very high rate, and in normal flight you don't want to be jumping up and down all the time. So as I said, expo combined with rates. Edited By AVC on 03/07/2018 12:37:03
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Yes, the cycle is familiar, but it's part of the fun, isn't it? You can build a new wing in a weekend probably. It's a flat bottom profile, and the constructions is quite standard. Also, you may add dual ailerons this time Good luck with the refurbishment!
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Posted by Rich too on 03/07/2018 12:15:15: Is it not feasible to use loads of expo instead of rates? I use them together: the higher the rate, the higher the expo. I would not recommend to use loads of expo, though, especially when it comes to a newbie, because the response is not linear and the more expo, the less linear which could lead to dangerous "jumps" when turning or climbing. For normal flight mode, I don't use more than 10% for myself, 25% for a learner. If I need special flight modes (e.g. flat spin), then high rates and 30-35% expo
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Haha thanks Tim. The Super Chipmunk is a great kit, I really encourage you to build it, and if you decide to do it, I have a lot of photos of my building, should they help. The kit sold by Slec is the same (a bit more expensive than when it was Apache, though...). In their website there is a mistake, by the way: the wingspan is not 73 inches, it's actually 79 (or 2 meters) I'm planning to build the Art Scholl version, using the plans of the Pepsi and modifying the rudder/fin. Edited By AVC on 03/07/2018 10:54:31
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I don;t see why a beginner should not use expos. Beginners have normally a bit of "shaking fingers", and in addition they have no clue how sensitive the stick movement could be. Exponentials will help on this first stages so that the beginner is focused on flying (one step at a time...) Recently, I took my children for their first session. It was funny that every time that I passed the control to them, the model began to climb and bank to the left (they only had control on ail and elev), and I had to take back the control. They both said that they weren't doing any input, so I landed the model and tried several times to pass the control in neutral sticks, to check if the trim was incorrectly setup, and the controls didn't move at all. I added 25% expo to channels 1 and 2, and the problem disappeared. This allowed them to fly for longer, enjoying the experience and learning a lot!. So in my opinion, expo for beginners, of course! (and for everyone else ) Edited By AVC on 03/07/2018 10:30:00 Edited By AVC on 03/07/2018 10:30:18
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Thanks Rich, It is a nice plane indeed. I remember I saw it first time some 17-18 years ago, in a review of the Ohio RC kit, imported in UK by Apache aviation, which later because the manufacturer when Ohio went out of business. This weekend I'll tackle the engine, and see if I can get it ready for Sunday (even without monokote...)
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It sounds like (lack of) down-thrust issue...
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Next step now is to have a look to the engine, and for this I will for sure need some help, so I will be asking questions soon!
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As an aside job, my little one had been all day asking me to build a Sopwith Camel as the one that he had in his book of WWI planes, so I used some scrap balsa and the time between glue curing and next steps, to do something that remotely looks like a Camel... I must admit that the propeller, which is the best part of the plane, is my son's job
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Finally, I repaired the two holes on the wing's covering, caused by the landing gear fairings. As before, I removed the damaged wood, and tried to make a rectangle as "rectangle" as possible Then, I cut a rectangle of wood as similar as possible to the one in the wing, from a sheet of same size as the wing covering, and added some support rails to the wing to glue this piece on. I added different supports for each wing, as the size of the whole was slightly different and it made more sense. And finally, glued the rectangles of covering to the support rails A bit of sanding, and ready for covering
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The next bit was the one in the leading edge. I don't have any pic of the "before" but it was basically like a diagonal wide cut, so what I did was to protect the surrounding with cello tape, and to remove all damaged wood Next, I filled up the hole with a piece of balsa of similar density, and glued it with Gorilla wood glue Finally, a bit of sanding, and it's ready for covering (same issue with Monokote as above...)
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First thing first. The easies job was the elevator tip, so I tackled it straightaway. The good news is that it was a "clean fracture" and I didn't miss any of the little bits of wood, so it was as simple as to expoy the broker tip in place Next will be to replace the missing covering, and to re-stretch the rest of covering; after sic years in the garage, it looks a bit tatty, but I hope that some ironing will amend it. And on the subject of covering, I used Monokote at the time, but I can't find it in UK, and I wouldn't like to re-do the whole covering, or ordering again in US (GBP-USD fx + Customs = expensive!), so if anybody knows where could I buy monokote on this side of the pond, I'd appreciate Edited By AVC on 02/07/2018 16:12:48
