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This is not a build but a modification of a cheap Chinese boat just for fun, I got a bit bored of scratch building projects as they take so long especially as I am not retired yet. The NDQ 757 Coastal Brother 1:25 Radio Controlled Racing Power Boat cost about £25 from Amazon. These boats have a basic 27mhz radio and two 380 type motors which have forward and reverse and you steer by powering one motor or both for straight ahead. I bought two of these boats as they are light and about 24 in long, one to convert/upgrade radio, esc and brushed motors the second was to upgrade radio, esc for brushless motors. The brushed motor version I put in two higher rated motors (390) with cooling fans built in, but same motor diameter but longer body I had to modify the mounts, kept same couplings and shaft/propellers. I did remove trim tabs (fixed) and replaced the straight running adjuster for a racing rudder. The brushless version is the same but has brushless motors 2x 2845 2600KV sensor less Specifications: KV(RPM/Volt): 2600KV RPM: 50000 Max Current: 42A
Thanks Canabus. I have just checked out the transmitter/receiver sets. Very reasonably priced. I really do want to upgrade. The Turnigy is around £40 whilst the Flysky is around £34. Do you have a preference?😊 Would my Futaba servos still work or would I need to change these also. I know this might be a strange question, but as you can see from one of my pictures above, I have a servo operating the speed controller. How do you control an electronic speed controller with the radio. As for the battery, is the safety bag used to put the battery in for charging in case it catches fire? I am a little wary about using things that I may not have control over. I have been looking at brushless motors. Can you say a kv range I should be looking for to possibly increase the speed issue. You have mentioned 1100kv and others above but was just wondering what you would cosider to be sensible bearing in mind only one motor is practical witout major hull surgery. Can I assume that if a motor is given a kv rating that all motors are based on the same criteria, or are there other variables. Thanks. 👍
My newest build , Billing Boats Fairmount Alpine i start building for one years ago , i have mount bowtruster and start with all lamps and things , i going to mount an radiocontrolled winch on deck and radiocontrolled cranes more pictures is comming
I am in the process of converting my tug EMANUEL to radio control, it was built by my granddad for my 6th birthday in 1955. It is 16" long 3.75" beam. It originally ran for about 40 minutes on a bike lamp battery. Set rudder and let go. Run round pond and collect, with luck. It's the small one in the picture. I intend to use the original motor coupled to M sonic ESC. And mini servo for rudder. Will post more pictures as refitting progresses. Pictures won't upload.
This is what she looked like in August I have ordered a new suit of cotton sails but I am also making a pair myself which are nearly finished and then it's time for a sail.I think the original suit in the picture are really too delicate to use The braine gear has been set aside and she now has radio control with seperate winches for the job and main The deck has been removed and she is glass lined as some of the planks were a little fragile She is obviously now a bit heavier than she was but a bit more user friendly I will post some pictures of her on the water
I am presently scratch building a 1 1:44th. scale model of Normandie 7 feet long as built June 1935. She will be radio controlled and fully lit. I started her in August and I have another month or two of work to complete.
How refreshing to read this thread. I built this kit in 1959/60 and from memory powered by a 1.5 c.c. E.D. diesel. Radio control I used a Reptone single channel unit for the rudder only. We had always had some sort of family boat on the river and not being able to be on board the RTTL was very frustrating for me. Sadly I sold the model as my training/career took hold. To this day I wonder if she has survived the test of time. She had a unique (highly illegal) ID number 2945. If any model boat enthusiast stumbles over my motley attempt at this Veron kit I would be very interested to hear? Good luck Skydive130 and enjoy the building experience!
I have to agree with jarvo remember the original boat was intended to have an IC engine and the radio control of the 1960s. Transistors were in use and the radio gear while it was bulky was not that heavy. Personally I would recommend you remove all of your batteries and stick in a decent 3cell LIPO. Where are you trying to ballast your boat down to? The originals ran with little if any extra ballast purist would say they were over scale speed but you have a throttle stick.
[Score: 10/10] 42" LCT Twin Propellors (2 Blade S Type) Direct Drive to a 2 x 400 brushed (2 Blade S Type) Powered by NiCad (9.6v) 3Amp/h Batteries Controlled Through Mtronics 25 ESC - Comments: Built from a free plan and build article by Glynn Guest in Model Boats mag December 2009, but modified to suit 1/16th Sherman tank which is also radio controlled. Mainly balsa and lite ply construction. Ramp operated on pulley and servo arm system. Work in progress. Still needs gun turrets and handrails etc. SOLD to a club member,
[Score: 9/10] 34"/3400g Swordsman hull Twin Propellors (3 Blade 45mm) Direct Drive to a 3670 x2 (3 Blade) Powered by LiPoly (14.8v) 5Amp/h Batteries Controlled Through Chinese (100Amps) ESC - Comments: This was my first serious attempt at model boating and the hull a Swordsman fibreglass 34.1/2" was purchases 50 years ago from Radio Control supplies Isleworth in 1967 along with a used RCS Sequential radio. Over the years it's been powered by an ED 2.46 Racer a Merco 35 and finally my treasured OS61 VRM With a tuned pipe from Prestwich model boats. Now it's time for a a total rebuild so i,be decided to try twin contra rotating screws and brushed 600 motors. I'm looking to fit a superstructure akin to a Sea King. So far the hull has been stripped of all its hardware and all holes made good with resin and glass fibre tape. Currently making jigs to set up the two new propshafts On first test run brushed motors were very disappointing so onto plan B. Latest setup will be 2 x 3670 2100kv each with 100amp ESC. The lead acid battery made the hull very unstable so it's back to lipo batteries
Scratch built model of a staem tug based on the St Canute. Length is 24 inches, and is radio controlled. I have attempted to make the finish as working boat , rather than something from a show case. I have just about completed the build. I was in the Merchant navy and lefty the the sea as a 1st mate in 1973. I always fancied building a model and saw the St Canute and decided to build a scratch build rather that a kit. I will put a photograph up when finished.
Just started my first timber model boat, will be converting it to radio controlled. Still waiting for some electronics, to turn up, motor, ESC, battery, then it will get serious. still have to source propeller and shaft when I find out motor shaft size. I've added a few photos of my barge I scratch built while waiting. It's Scotty scale and my little helper, Grandson Aiden, can't wait to see it in the water.
NPJ Yes I did mention in an earlier post re the space and see you have fitted the exciters there. You may not be able to use the original electronics with your new radio if it was all on one board ie rx and controls. Can you post a plarge pic of the board?
Hi Radiosailor I was not familiar with the model so have just searched. The Tug forum http://modeltugforum.com/ has an article by a member who did some mods. If you register you can see the pics and ask for advice. Regarding fixed or steerable nozzles they both work better than a standard prop. For maximum effect the steerable works best and this will certainly be the case with a single prop. I have had both types on tugs but mine were twin screw and I could turn both on the spot with independent motor control. From the motors you have I suspect the Xdrive 555 may have the best torque which as Doug said is best for Tugs. There are several suppliers but without knowing any measurements it's difficult to point you to a specific site. It should make into a nice model and will certainly look the part on the water. If you look on Model Slipiway's web site http://www.modelslipway.com/ they have a kit Al Khubar and AZIZ which are twin Kort. There are links to build blogs for the AZIZ which may be useful. Model Boats and MMI also had featured articles on builds for Al Khubar.