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Hi. Mi private pilots license also does not include night flying. But interesting is to consider when they define what is included. When having a certain number of instructed night flights you are entitled to fly in the vicinity of an airport. Vicinity of an airport German definition is that you have to be able to see the traffic in the pattern of an airport. When I did my flight from San Jose, CA to Phoenix SkyHarbour, I was able to see the traffic being about 1.5 hours from the airport. The night definition is that the night begins 30 minutes after sunset. So was entitled to do this night approaches as you can see the traffic in the pattern, on a large airport like Sky Harbour, and in the Southwest of the USA from very far. But when doing these landing operations at a large international airport, shortly before touch-down you are flying into a black hole. Due to this on my first landing in Sky Harbour, I made an awful 3-point-landing making the plane jump 2 or 3 times. Fortunately, I was aware of how to react properly when this happens. The second special experience is when you are taxiing on the runway to get to its exit and report "runway vacated" in a small plane like a Cessna Cutlass the lights lose their structure. So I went to search for the yellow line on the left side of the runway until it curved into the exit. But this yellow line and the blue runway lights are hugely distant from each other so I had to focus my efforts to stay to the right of the blue lights but still being able to see the yellow line. Once I crossed the lines that mark that you are leaving the runway I could report back to the tower "runway vacated". My second-night landing was when I did try to fly to an airport next to the "Grand Canyon". As the report of the airport said expect gain or lose 40 knots of speed on final I decided not to land and flew back To Phoenix. What a wonderful experience. The landscape was already impressive on my flight to the Grand Canyon, but it was topped when I flew by night. First I was in contact with one center in charge while being above a certain altitude. Then this center passes you to one in charge below that altitude. Makes you feel like a professional pilot. Finally, this center did pass me to the tower of Sky Harbor. I was approaching from the north. Then, what controllers of large airports like they make you cross the airport midfield what ensures you stay away from the other traffic of the airport. You cannot imagine what a sight it is when you approach a large city like Phoenix by night. After he gave me its clear to land I was remembering my awful night landing earlier. When I did have the feeling that I was about to touch-down I did control the airplane so that all you felt on touch-down was the vibration of the wheels turning. A Geman friend of mine that was on the plane with me was so impressed that he said he would fly again with me at any time. One other fact I want to share is the importance to really dominate the phraseology of radio communication and what Americans call to know the system. On my first approach by night to Phoenix, I did confuse the last VOR with the ILS beacon. So when switching to what I thought to be the last VOR the needle got full to the right and stayed there. So I did a report I was not able to tune in the VOR and so tower did give me instructions for the further approach. When you fly in from the west you fly over a mountain full of antennas and the red lights on top of it. I felt very good being routed by the tower. Those of you familiar with night-flight and how to find the location of the airport know the rule of the black spot within the lights of the city is where the airport is. Well, Sky Harbor has the terminal building between its 2 runways and so Sky Harbor does not look like a black spot. So when the tower asked me if I had field in sight I did respond negative a couple of times until he reported that I was on the 45 for the runway. Then I finally saw the airport. Here is something that is the consequence of good radio training. My instructor always said to report negative until you are really enabled to say affirm. So Tower knows when you are really able to report affirm. Do not be shy, it is your and others life! The second time on that approach was when tower gave me the instruction: 3-60 to the right until further advice! My teacher played the role of the tower and one of the things he said to teach us the right behavior was to stay silent and fly as instructed until tower contacts you again. I do confess I had never done 3-60s neither by night nor during the day! So I put the plane into a standard curve, kept it there, watched my altitude and speed. Being so familiar with this instruction from the tower I felt "at home" and this being relaxed was very useful!
Don't know what happened to my last post but I'll try again. This link, https://www.rcgroups.com/forums/showthread.php?1148637-wire-... may be a useful read and explain what I am on about (rough idea in pic). I don't think too many people are aware of some of the problems which can be caused by altering Batt to ESC wiring. I don't think its too much of a problem at lower voltages but see what you think. Not sure if you have a throttle curve facility on your new TX but if it has, using that you can create a gentle start, ramping up steadily, no matter how fast you push the stick up. You can ram the stick up but it will only follow the curve you set. eg pic showing random curve (you can make this any shape you want to control any function) there are usually a number of curves you can set and save for throttle, rudder - anything you want to control automatically. Not sure about your TX but my 9xr even has a feature whereby you can slow the servo action down (I use that on my Piper Super Cub flaps which come down slowly in 2 stages (2 pos switch) and go up faster. Your new TX probably has a lot of these features and once you find how to use them it will open up a whole new world of fun. Another example of what you can do with these computer radios is, on one of my models I am using 'flapperons' to slow it for landing and as the ailerons come down the elevator is mixed to move up to compensate to stop the plane nosing down. It's pretty much endless what you can do. I'm still exploring after 8 yrs of computer radio use. I remember a guy somewhere talking about the flashing lights on his plane and saying it wasn't the lights on a flasher unit it was the TX telling them to flash.
depending upon the type of motor cooling it can be a problem. Most brushless motors are out runners so the case rotates! In runners are usually for higher speed applications (or driving a gearbox). If you have an idea as to the size of IC engine the boat was intended to have then this list may be a help .049 or .051 = 100 watts 0.10 = 200 watts 0.15 = 300 watts 0.25 = 500 watts 0.32 = 640 watts 0.40 = 800 watts 0.45 = 900 watts 0.51 = 1020 watts 0.61 = 1220 watts 0.75 = 1500 watts 0.91 = 1820 watts Since Watts are Volts * Amps ( I know this is not accurate for a reactive load like an electric motor but its a rule of thumb) This gives you a ball park next point is the KV ( revs per volt) of a motor. The higher the KV the smaller the prop. Finally buy a Watt meter they are not expensive and give you a chance to " fine tune" a setup. https://www.ebay.co.uk/itm/FT08-RC-150A-Hight-Precision-Watt... Car ESCs ( usually) have a reverse function while the airplane versions do not. They are generally cheaper than boat specific ESCs.
Ha Ha i got no credit for some things I came up with either Trouble is I can only remember the word FANTABULOUS which I invented by accident Fantastic and fabulous ame to mind together as I was talking and the hybrid word came out.🤓🤓 Re the BECS I know that but I couldn't explain it like you and was also asking what I thought Martin wanted to know. Floating arrays? Didn't TESLA do something similar during the RC boat . trials? Or was that actually the vessel itself? In one of my bigger boats I used FOUR ex GPO L/A cells which was enough with it's Ex forces motors to put a bone in the boat's teeth as the say. The boat ? RMV Mauritania 5 feet long but very light for it's size hence the need for the accumulator cells Balsa frames and sides with ceiling tile superstructure with balsa bracing. Free running so it was always heeling and with the bone creaming at the forefoot was very impressive. Destroyed by a guy collapsing on it. He'd only fainted but me pore owl gerl was just chips and snowflakes from one end to the other. Nothing to repair as there was nowt left to repair🤐 I kept one cell for starting glow motors and sold the rest at a good profit. Incidentally the motors were that good that when everyone found out where to get them They were sold out in 2 days with no more available anywhere Don't know what they were out of but from the overspray on them ( cockpit green but the Yank version -- we thought) we believed they were from planes. Very solid with 9 segment rotor . Totally enclosed. Airtight? presumably to prevent arcing igniting fumes. The rotorsegments? We found out when one didn't run so we stripped it and found them shining at us. Lovely tight windings. Thick with shellac/varnish. The problem? A stuck brush caused by a tight pivot Drop of 3 in one oil and a very light smear of grease cured it. The carbons were replaceable if you could make or find some. I found a firm in Formby that made and sold brushes for anything. I fixed son's Fiat automatic thenks to them. It had a magnetic clutch and the brushes were so worn we didn't know what the shape should be. Turned out to be about 2 inches long rectangles plain and simple. LOL. Wish I could find some of those lovely engineered motors now.😤👍
Adjusted the transom flaps and reprogrammed the ESCs to the softest start settings, retested. Until now, the test runs did not have the duration or stability to really examine what was happening. Using 3 S batteries acceleration is rapid and a is plane quickly achieved. However, as the acceleration continues and speed increases, the bow digs in. A cloud of spray then surrounds the model as the plane is lost. Brushless motors do not modulate as smoothly as brushed and adjusting power tends to be erratic or exaggerated. This is a scale model and the propeller shaft angles are per the plans. The thrust from the propeller has two components, horizontal and vertical. The horizontal propels the vessel forward. However, the vertical component forces the stern upwards and, correspondingly, the bow down. Have moved as much weight as possible towards the stern to counteract this, limited by maintaining the correct displacement and waterline. The easiest solution is to reduce motor power, decreasing both speed and the lifting component. Decided to retry the 2S batteries as they give reduced power. A plane is again achieved, but as the motor response is more docile, it can be controlled. If the speed gets too high the bow lowers, as before, but the motor output can be more easily adjusted. Spent a pleasant half hour or so with the vessel accelerating onto and off a nice, controllable plane. Much less spray and drama than with 3S and much more controllable. Have now decided to revise plans and use 2S rather than 3 batteries. A further advantage is the motor noise is muted and now sounds more like a gas turbine than a dental drill! Finally feeling comfortable with the model. Will thus shelve further building until the late fall when sailing in Canada concludes. Want to enjoy the rest of my fleet in the meantime! Will summarize my experiences with brushless motors in another blog shortly for the benefits of others contemplating their use. After restarting the model will resurrect periodic build blogs to advise progress.
Im not on here that much, so a little late picking this up. Are you talking about TT25 transducers like the ones Mrrcsound sell/ I suppose they all work the same, I've used these a lot, in planes mostly, and experimented with boats, so can offer some hands on advice. Firstly, you don't cut any holes to let sound out, as this isn't how they work. Its all about the vibrations. The centre ring is epoxied (that's the best way, they have to be permanent, but with some teasing they can be removed it required, rather than cyno) to the surface, which obviously needs to be flat. The thinner the material, the more sound, but its marginal, as the thinner you go, the less bass, or deeper tones. With planes, the best material by far is the epo foam, so when mounting into a ply or balsa plane they work best going to foam, then the ply, and the same will apply for a boat. 2-3mm is generally the optimum thickness. Remember, the area is going to vibrate, so use an area that can do this, the sides of a hull are ideal. The back of the transducers get hot, so don't cover the back, the heat has to dissipate and once secure, make sure the unit can move in and out, its easy to drip glue in the wrong place and the whole thing gets stuck, it wont vibrate now, so won't do the job. Also, its worth epoxying the transducer to 2mm foam, epo that the ready to fly planes works best, its close density, the stuff that packs white goods is poor as its a more open density and falls apart. Once you have this, you can move it around by just holding it against the hull to see where the best sound is. All this is relevant to the Mrrcsound transducers, I use a number of his sound units, so cant really comment on what you are using as I cant find that info on this thread (did a man read!) Here are a couple of my models to give you an idea👍 https://www.youtube.com/watch?v=jXFvrkDl7ow&t=207shttps://www.youtube.com/watch?v=_OITvPabFHY&t=165s so these are all Mrrcsound units, and both have two tt25 transducers either side ogf the hull and fuselage. With the Mrrcsound systems, you can use two tt25, if you want an additional two, then an aux amp is required hope that helps! Paul
The kits came with the tapered masts. I did have make one of the masts over as it was warped.What I did was purchase a 1/2” hard wood dowel marked the center and smaller diameter on one end then used a small razor plane to taper it to almost the shape I needed then cut the lenth just a bit longer so I could fit it into my 1/2 drill chock fastened the drill to my work bench and used it like a makeshift lath then used sandpaper to smooth and shape the final taper needed. Hope this helps Mike
I recently acquired an air screw driven hydroplane fitted with an A.M 15 diesel engine. The boat appeared to have either been from the Mercury Kit which was produced from the early 1960s till late 1970s or may have been built from the plans. What was unusual is that it had been fitted with R.C for rudder only operation and when I put a receiver in to try it, the system worked well. I also ran the engine and it appears to have been as new and after examination of the boat this appeared to have not been used either. In the 1960s I had built a couple of airscrew boats and they were free running powered by engines taken from my control line model aircraft after they had been pranged. Intentions are to eventually get the hydroplane on the water with brushless electric power due to the "No I.C" rules on my local boating lakes, something I never had to worry about as a 15 year old . Boaty😎
Speranza is a lovely boat and handles nicely but don't undepower it. Vic's Pond Skater is a good flyer and can be converted to leccy and rc. I put a half circle of piano wire across the tips of the front float as a buffer in case of striking an obstacle. My motive power Was 1.5 diesel a prop cut down from a heavy nylon 9" one so just clears the hull/frame . Free running was loads of fun. Air rudder not water. If it is sluggish and won't plane increase the downthrust. The opposite of what you might expect. Regards John Pond Skater can be found on Web Google Vic Smeed Model boat plans. BTW an original thread can be found on here with the title Scudder👍
Hi doug I'm glad you sorted that Tx problem. Easy when etc. . I was about to suggest a "dry" soldered joint at the switch which would have had the same effect. My No2 son got pulled by the smokeys for driving with his fog lamps blazing in fine weather. As he had just bought the vehicle he just got verballed and a notice to repair etc. I went through it with a meter from front to rear. No dice so I suggested finding the fuse and pulling it until I had more time to go through it again. Rob opened the fuse box and found that two wires were 👍👍👍👍👍👍👍👍👍trapped under it with the insulation split giving a permanent live to the fog lights when the headlights were turned on. Again someone had been careless. Often the case unfortunately rather like the store man who put the wrong bolts in the bin and the engineer using them to put in an aircraft windscreen that blew out in flight. The blast carried the pilot half way out where he hung until the plane landed. A few thous made all the difference. Imagine if the fault in the tranny was in a mains powered item just what might have happened. I shudder to think. sorry mods for hi-jacking the thread. John O/T
Hi Martin, glad Doug sorted your spektrum, the problem is we do live in a different world now, back in the 70s 80s and 90s a model rc aircraft was something small boys and even big boys would be in wonder of because you had to spend a lot of time effort,money,and patience to have one. However that is not the case now, I can go to Tesco just now and for very little money (£35ish) walk out of the door with a small 4 channel 2.4GHz rc plane and go attempt to fly it in my local park. Now there lies the problem model rc aircraft are no longer things old men like us would spend months making then going to our club fields to fly. Let's go one step further, let's go to any good model shop and buy, ready to fly, what is described on the box as a "Park flyer" now this Park flyer is capable of over 100mph coming out of a reversal manoeuvre in straight and level flight. Now we on here would never fly this model in a public place, but a lot of people will and do. I used to be an active member of SMAE way back but am no longer because I'm lucky enough to have access to a totally private field. Norman.
Hi Doug, I could be interested in that Rx of yours. But I thought that the Txs were Ok for either DSMX or DSM2, although I haven't any idea what they are. PM me with a price? To be honest, I hate working foam and was glad to be rid of the Lightning master in the end. And Mick is such a lovely guy. I'm sure Firme Hahn haven't missed the slab of foam I made it from! When I were a wee loddy, all RC 'planes were little. 4 foot was a big boy. Now, 4 foot is laughed at. Even a Super 60 is considered small. I may just go ahead with something of a small trainer level and then slam down the Skystreak 32. We'll have to see. Or It might be a flying wing slope soarer to fly up at my son's place in Berwick on the Scotch borders. Lob it, fly around, land it, go ome. Suits me! Martin
Hi Martin, have to admit I haven't flown it yet, the damn Orange RX won't work with my TXs 😆 So I'm about to buy the Lemon version, which is supposed to be Spektrum DMX and DSM2 compatible! We'll see! Guess I could at least do some taxiing trials with a standard RX on the Ostpark lake!? I haven't actually flown anything for nearly 50 years 😲 Did once 'fly' a Victor tanker simulator, that was fun😁 Also flew a real Grumman trainer a few times, from Blackwater airfield near Camberley, just before I left UK for Germany. That was LOADS MORE fun😊 For your 'smallish hairyplanes' the stabiliser RX could also be useful!? Just so happens 😁 I've got an Orange version, which works with your TX😊, going spare!!😁 In my, admittedly limited, experience small RC planes can be very twitchy and sensitive to winds! That's why I switched to ship building; two Totals and a Fly-away😡 I can swim but I can't fly 🤔 You absolute nut! You gave away such a treasure! Without even arranging some royalties? I'm surprised at you 😲 1/7, wow! 10 times the size of the Airfix kit I built back then. The EE Lightning was a nice bird (sheer brute force and ignorance😁), but not a patch on the Hawker Hunter for sheer looks and just STYLE! I flew the KeilKraft version for while, until I managed to Jetex it outta sight, at RAF Hemswell, now a housing estate I see 🤔 Nostalgia ain't what it used to be, or ...? Alles gute alter Knacker! Cheers, Doug 😎
Whilst waiting for the new motors and ESCs, reviewed videos of the vessel under power and noted that as the speed increases, the bow lifts towards a plane. However, as she gathers speed the transom flaps become effective, forcing the bow down in a cloud of spray. At this point the plane has been lost and the model becomes almost uncontrollable. Decided to temporarily ballast the hull to simulate the new motors and ESCs, then try to establish the optimum flap angle using just the centre propeller and shaft. This is the original 2838 brushless motor installation with a 30 mm propeller. With this simulated drivetrain it would also be an opportunity to determine the best battery locations for both 2 and 3S Li-Po batteries. Made up an angle template with a spirit level to get the correct deck inclination with the vessel floating at rest. From this located each type of battery statically - somewhere close to the mid-point of the hull. Which also seemed as good a place to start as any! Somewhere in the research for this model found a reference to the transom flap angle. This was at a 2 degree -ve (pointing downwards) angle. Installed the 2S battery and tried the model. The bow dug in at speed. Adjusted the flap to a straight and level position and tried again. The bow still wanted to dig in, but to a reduced extent. Readjusted the angle to 2 + ve and repeated. The bow now lifted so the forefoot just cleared the water and then remained in that position. Replaced the 2S battery with the 3S. The extra power obviously increased speed and the bow lifted slightly further. The spray was deflected by the chine rails and a level plane established. The conclusion is that the transom flap angle is critical to the correct planing of this model and that it should not be negative. Until the new motors and ESCs are fitted will leave the transom flap and battery locations as is. Once these components are installed, intend to repeat the test. Am confident that with some fine tuning the model can be now made to plane properly at a scale speed. Interesting to note that the model will just about plane with only one propeller operating – wonder what it will be like with all three?