Know the feeling with 'time' for things like synch'ed gun flash and sound! I have loads of miniature LEDs and two programmable sound units with synch switches - as yet only the instructions have been out of the box🤔 My destroyer radar is also independent of the RC - I just put a microswitch under the 'B' gun turret to switch it on 😉
Hi Les Thank you. There are three LEDS which change from red to green when fully charged. I can see no mention of setting a half charge. Haverlock was right in thinking each cell was charged by the balance lead so you will be protected from overcharging. The solution is to buy a battery checker theirs is DYN4071 and I have one in my collection. Using the checker involves plugging the battery via the balance lead into the balancer and each cell voltage is displayed sequentially. So you charge for half your normal length of time and check the voltage of each cell is about 3.7 to 3.8v. Bit clunky but would work. A better solution would be to invest in a balancer charger which will automatically charge to full voltage or the storage charge. There are several available some with mains power supplies and others needing a DC power source. Have a look at https://www.componentshop.co.uk/catalogsearch/result/?q=bala... I have a Giant Power G6AC but they all work just as well. Please ask if you need more info
John As you are using 2.4Ghz radios there is quite a long delay in the binding between Tx and Rx. The ESCs also perform a set up and I have noticed that this is often quicker than the radio. As a result the ESCs have no signal and can revert to a failsafe state. If you have correctly set up the ESC with the tx then it should retain this setting unless you press the set up button whilst the lights are flashing. I suspect this is at the root of the problem. To restore the settings to your set I suggest you use a separate rx battery, centre the throttle stick and trim and get the Tx/rx working together. Then switch on the ESC and whilst the lights are flashing press the set up button and move the throttle stick full forward (solid green) then full reverse (solid red) return to neutral solid red/green. If you now switch off the esc and rx battery and switch back on the ESC should have solid red/green light showing. Repeat with the other ESC and test. Switch off and connect both escs via the Y lead. You can use one ESC to provide the rx power but do disconnect one red lead. Centre the tx throttle and trim and make sure you switch on the ESC with the BEC connected first. Hopefully both ESCs will now have solid red/green leds. I use three Mtronic ESCs with my RMS Olympic and had a very similar problem. I suspect the change from bench to water is more to do with stick/trim alignment and longer binding time due to other 2.4 Tx working in close proximity at the sailing site. I look forward to hearing your efforts next wednesday - hopefully the next hurricane will have passed by then.
Hi Neil, Don't know how Graham wired his but the simplest is series for each lighting circuit; minimum wiring and only one current limiting resistor calculated to set the specified operating current for the LEDs used. In a parallel circuit the resistor value must be calculated for the sum of the operating currents of all the LEDs in the circuit. Required Resistance = (Voltage Source - LED Forward Voltage) / Max LED Current or R = (Vs-Vf) / Imax As an example, a particular LED has a 3.0 volt forward voltage (Vf) and a maximum current rating of 20mA. It is to be driven with a 5.0 volt source. Therefore, R = (5.0 - 3.0) / .020 or R = 2.0 / .020 or R = 100 Ohms If you do not know the LED specs, typically, a 80-100 ohm resistor will do just fine. All you 'never wanted to know' about LEDs in model boats (or any other model!) you can find here - http://www.laureanno.com/RC/LED-assembly.htm Cheers Doug 😎
Thank you for coming back so quickly. Do not concern yourself about not very elaborate, it looks really great. Impressive show. I assume you had to balance out the number of LEDs. Have they got to be in series or parallel? Sorry but I am very inexperienced in this stuff! All the best. NPJ
Hi Mark, took me yonks to find them all🤔 I also experimented with battery athwartships, hope for better 'roll control' but eventually settled for between the shafts cos athwartships was too high. My 'pico' RX (ca. 5x1.5cm😉) can go almost anywhere, with Velcro to hold it in place. The dual ESC can go where the old 800mAh NiMH was. Later stage: smoke genny and lighting board in the lower superstructure, as apparently also in the latest versions! Mini SMD or strip LEDs for illumination and nav lights, mini 3V geared motor for the radar perhaps. Don't need a radio channel for this, just a switch and a couple of AA alkaline batts and away you go😉 Although these days you almost never see the antenna cos it's hidden in a 'burger-bun' radome a la Furuno! 😉 Somewhere on the WWW spider web I remember seeing a working towing tackle - must dig out the bookmark, might have been Krick! Cheers Doug 😎 Glad you're enjoying it Neil, that's the whole point ain't it? 👍
Built in 2016, she is a 1:14 scale Dumas 40 ft. UTB, which I did my best to keep natural wood wherever possible. Powered by twin 775 size 12 volt Johnson type motors turning Raboesch 50mm 4-blade brass wheels. I properly illuminated her with Lighthouse 9v LEDs and adorned with a BECC USCG Ensign. I overbuilt her like my Father overbuilt his airplanes.
Brill👍 Doodle Bug looks great, never get off the ground though🤔 Don't forget the red flicker LEDs to illuminate the smoke on the V2, and of course the appropriate sound VERY LOUD!!😊 Servo and push rod to raise the launch ramp or hydraulics?? Re 50 cals: Don't need the tripods, I plan to mount 'em in tubs on the PT Boat. Don't want to bust your filament budget 😉 so the stl file would be fine. Many thanks. Video of the V2 printing, complete with anguished face of the creator?😉 Cheers Doug 😎 PS what scale are your 50s?
Hi Doug The Olympic and Titanic used 5mm and 3mm LEDs in the portholes - all illuminated. The cabins were glazed with overhead projector film, printed with the frame details then individually cut and stuck into each aperture. We had the cabin windows water jet cut so the were all the same size. I used Canopy Glue and the frames had all been acrylic spray painted. All were a close fit and stuck easily. I can appreciate your difficulty with the destroyer, I cheated with my HMS Grenville (1:96), and just cut small holes in the plating and added a dab of black paint to represent. Using the method I described with the frame on the face of the cabin leaves an aperture to glue the window into. A bead of glue will keep the window in place once dry. I find it dries quite clear and rubbery so with sufficient flat surfaces it works very well. Glue'nGlaze is tried and tested if you can get hold of some Dave
After the sail, I added some hardware to the spars, namely jackstays. I also ordered some aircraft plywood and used it to make new winch drums. These are sized to my current plan of only bracing the tops'l yards. Hopefully, this is the last set I'll have to make. Seeing into the dark interior of the hull can be a pain, more so the brighter it is outside. Mark got some red LEDs to light up the dash of his old pick-up (ute for my Assie friends) and gave me a left-over section. It requires a 12 volt supply (I'm running 6) and red doesn't really help in daylight, but I like the idea. If I can find a white LED strip that'll run on 6 volts, this will definitely get put in. The stern also had folding bulwarks like the bow, but that wrapped all the way around. On the real ship these were replace with a fixed bulwark except for a couple of panels that allowed access to the stern boat. By the time the ship came to Baltimore in 1955, these too were gone, with all their hardware. Again, I'm not making them functional, and decided to built these on the model rather than as separate pieces like on the bow. The hinges are represented inboard by card stock and brass eyes. The barrel portion of the hinges outboard at the bottom of each panel will be a little section of 1/16" wood dowel. The forward bulwarks were epoxied in place and the support rods were installed all around. The tops are raw because they all get a bright cap rail (varnished natural wood) and I'll put that on when it won't get messed up with paint or glue. A friend sent me a box of stuff, among which was a nive little cat face perfect for my catheads. Only having one, I was going to cast a pair in resin. But I'm out of casting resin and epoxy glue didn't set up in a way I liked, so we'll come back to that. The tops'l yards on the ship are hinged iron bands, line with wood staves. I wanted to replicate that functionality not only because that's what the ship has, but because it would allow me to take them off the mast without unrigging half the ship. I cut some heavy copper I use for everything and bent it into two half circles; soldiered brass tubing to the ends, and sawed out the notches with a jewelers saw. If only it had been that easy. Soldiering here tended to un-soldier there, cold soldier joints wouldn't hold. I gave up in frustration. I changed the gun carriages based on some research I did, but I'll post separate entries dealing with them and the ship's boats. I went looking for information on soldiering little things, and took another whack at the parrels. This time it worked out much better. I reused the copper band and brass tubing for the main and made the fore the same way. I still have to make the mizzen tops'l yard parrel, but my soldiering has gotten much much better. Last May ('17) I took the boat to the Baltimore Port Expo for National Maritime Day again, surrounded by members of our newly formed White Rocks Model Boat Club. I didn't manage to get her controls set-up in time, so she didn't go in the pool, but sat on her cart and looked pretty. I put her courses and trys'ls on her for this. The trys'ls won't be used when she sails, but can be set for static displays. The courses will get used, but I'll be able to buntl them up as shown to reduce sail. Also to reduce sail, the t'gallants and royals will be easily removable, or replaceable, as the case may be, depending on what wind there is. That pretty much brings us up to date as of July 2017. I'll post something about the boats and guns in a bit, as well as any other progress that's made. There's far more detail, images, and notes at my website on this, and the other models I'm working on at: http://todd.mainecav.org/model/ There's a few items I skimmed, or skipped over, like her signal flags, that are covered in detail there; like the day she was almost dismasted by the garage door.
Hi Doug Yes I did have the ESC and servo plugged in....now I can't even get the ESC or Rx to switch on...no LEDs at all now....think i'll buy a dolls house instead...much easier :-( i'm obviously missing/not doing something but i've tried all and every ways and nothing
Right Dave.....just done that, the Rx has green LED lit and the ESC started with flashing green'red LEDS....when I move the right hand stick to the right the green LED shows...when moved to the left the red LED shows....when stick returned to centre the red/green LEDS show again
Hi Nick You are using your Tamco and it is working? I suggest you try a spare servo in each channel and identify which Tx sticks work which channel on the Rx. The servo should follow the stick movement in both directions. If you do not have a separate Rx battery you can use your ESC, you dont need a motor connected but do tape up the wires to prevent a short. Once you have identified the throttle output channel you can plug your esc into this channel. Plug the test servo into the rudder channel and make sure it is working Your throttle (ESC) stick does need to be in the centre position. If you are using a horizontal stick then I add the following procedure or follow my original guide. When you say rudder stick do you mean the horizontal stick movement on the tx? If so it is this stick you need to move to set the ESC. Say full right when the solid green light is on then full left when the red light is on. Stick back to centre and both red green should be solid. With the Tx switched on the bind process is automatic once you press the small button after switch on and whilst the red/green leds are flashing. Once pressed the green led should be solid until you move the stick fully when the red led lights and you move the stick in the opposite direction and return to centre when the red green lights show solid. Dave
Hi Nick Your ESC needs setting to the TX/RX. It is very important that before you switch on the Tx all the sticks and trims are at neutral and set for normal as against reverse. Switch on the Tx plug the Esc with battery connected into the Rx ESC socket. Switch on the ESC, both leds flash red green. Whilst they are flashing push the small button on the ESC. The green light should illuminate, push the relevant TX stick fully up, the red led should illuminate, pull the stick fully down and then return it to neutral. Both red and green LEDs should be lit whilst the stick is in the neutral position. Pushing the stick up fully will light the green LED (forward) fully the other way the red LED will light (reverse). The motor will run if connected. Your ESC is now set up to work with this Tx/Rx combination and will retain the setting each time you switch on. Always centre your sticks before switching on to avoid the motor starting due to a non central position. Different Tx/Rx combinations may require you to repeat the procedure. The same procedure should work for all Mtronic ESCs with a button including your two. Dave