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Model Boats Website Team
December 2018: 4 people November 2018: 11 people October 2018: 9 people September 2018: 13 people August 2018: 5 people July 2018: 8 people June 2018: 8 people May 2018: 7 people April 2018: 24 people March 2018: 11 people
Has anyone done any significant modifications to a Thunder Tiger Avanti fast electric? I have one and all I have done is to replace the nylon prop with a metal one thus there is very little increase in performance and the reason for doing this was due to the nylon prop throwing a blade after striking an underwater object. Prestwich Model Boats have a suitable replacement motor complete with a better ESC than the existing Ace one and their system can handle up to 4S Lipos instead of the stock set up of 3s . I have located a source of a 4S Lipo which length and width is same as my 3S one but the height is a little more and it will fit into the battery box. To trim it out properly I would have to add some ballast to the starboard side. Due to the electrics including the battery all being in a small watertight box at the stern there is not a great amount of scope for a lot of mods. Boaty😁
Here's a pic of the set-up, with the ESC central. Rx is in a little styrene box I made for it. Shows the motor too on its mount. Martin And yes I got the heat shrink on the battery leads the wrong way round, but had so much trouble soldering the bloody wires to that stupid t shaped plug I couldn't be arsed to change em over!
I bought the hull from a member on here stripped the insides and redone it to take the rudder servo i made the motor mounts from ply & used epoxy to set them in it runs nicely on the two 45mm brass props the superstructure will be made from lite ply
A way to mount motors in a tight space is to mount them back to back on a vertical ply plate using a couple of Terry Tool clips. They come in a wide range of sizes and two per motor should be enough. Strong,firm and makes for easy removal if needed. Here is a link. Or Google TERRY TOOL CLIPS. https://www.google.co.uk/search?q=terry+tool+clips&oq=Terry+... Clips best fixed to the plate before gluing it in place if using screws although they could be epoxied in place with the plate in place.👍👍
Hi TJ, The third motor can be connected to one of the secondary outputs, rudder or third (central) motor as it has no effect on the steering! The mixer only affects the two outer motors to augment the steering. Fairly elementary, anything on the boat's longitudinal axis can't have any leverage effect on the steering.😁 "The WTail mixer also has two extra outputs to allow you to connect up a rudder and a further centrally mounted motor." Ciao, Doug 😎
Hi Colin, I measured on your motor and it's 1&1/4 inches as specified. (Did mention that in my post!) The length between mounting hole centres may vary slightly from original spec, depending on the new bearing bushes I'm fitting. Can't measure that until I have it reassembled. I'm nearly back up to speed now so will start the reassembly shortly. Cheers, Doug 😎
Hello: I have a Hobby Engine “premium” 2.4GHz “Richardson” tug. This boat is identical mechanically to the “Southampton” tug. I’ve read many posts on the forum having to do with replacing the factory-installed motor/gearbox unit with two separate motors mounted side by side. Personally I’m happy with the factory drive setup; it’s quite powerful & it runs smoothly. The reduction gearing is a bit noisy, but my boat is new & will likely quiet down with use. I have two requests for those who have removed the factory drive unit & replaced it with separate motors: 1. If you’ve still got your factory drive unit & have taken it apart out of curiosity, if possible will you please post photos of the internal parts? I’m interested in seeing what’s inside the housing & how the gearing is set up. 2. Along the same vein, I’d like to acquire a spare factory drive to have on hand, just in case. If you have a complete, working drive unit that you’d consider offering for sale, please send a PM to me & let me know what you would want for a price. Thanks very much. Pete
[Score: 8/10] 33"/3700g "Maureen Lee" Capable of 3mph and a runtime of 90mins Single Propellor (3 Blade 30mm) Direct Drive to a 550 type (3 Blade) Powered by NiMH (7.2v) 3Amp/h Batteries Controlled Through Unknown ESC - Comments: The “Maureen Lee” started out as a Bristol Bay ready-to-run semi-scale model of a typical European fishing cutter. Many modifications were made to her to make her look like an old, worn-out fishing boat. Factory-installed switchable work and navigation lighting means that she can even be operated at night. A 550-size electric motor and metal propeller allow for ample power. A Bristol Bay model is supplied practically fully assembled… you need only mount the two masts and install the batteries. Numerous robust details make this model look great at home or on the water! Technical specifications: Hull length: 850 mm Width: 220 mm Overall height: 737 mm Total weight: 3650 g
Hi Doug. Thanks for the design. It looks really good and very adjustable. I have bought a 1485 brushless motor for the rebuild. A bit of a beast so I hope not too much. I think this is a lot more powerful than a 480 so do you think 8 or 10mm ply for the mount. Thanks.🤓
Now that the primer coat is on throughout, does anybody have any ideas as to how I can mount the new out-runner motor I have bought for this model. Is there an adjustable mounting bracket on the market I can buy or is it make it myself. Does anybody have pictures of suitable mounts to give me ideas as to how to proceed. Thanks.😊
Thanks Commodore,👍 I'm going to use a 2V SLA battery, as normal for firing up the Glo motors. I was wondering about ignition time needed and burn out of the plug coil. Just have to experiment I suppose, trick will be to limit the amount of oxygen getting to the coil I guess. Was planning to mass produce the Depthcharges from balsa dowel. Maybe I could 'scoop 'em up' with my tug or fishing cutter😁 Cheers, Doug 😎
[Score: 5/10] 26"/1400g HMS Sabre, Scimitar-class preceded by Archer-Class Capable of 12mph and a runtime of 15mins Single Propellor (3 Blade 35mm) Direct Drive Powered by LiPoly (7.4v) 3Amp/h Batteries Controlled Through China 60A (30Amps) ESC - Comments: Just finish this little boat, need to have its first trial on the water to measure current draw and perhaps modify the prop size. Make sure water cooling works, and the thing steers ok, as rudder is off set. and may have to be move into the prop wash. The Motor 3650 4Poles 3060KV Brushless RC Motor for 1/10 RC Car Boat 1. 4Poles design, high torque and high efficiency. The overall efficiency exceed 90 percent. 2. Low heat production, long lifetime, strong overload protection and it can function 95% of its features without any heat sink appliance. 3. High quality materials adopted: high intense aluminum alloy anodizing shell , front and back cover , high-performance temperature-resistant magnetic steel and imported high-speed bearing. Specifications: Model: XTI-3650/4.5D Dimension: 50 * 36mm KV(RPM/V): 3060KV Poles: 4 Max Power: 1300W Max Voltage: 19V Max Amps: 68A Shaft Diameter: 3.2mm Shaft Length: 15mm Connector: 5.0mm Banana Connector. The real boat Builders: Halmatic Operators: Royal Navy Preceded by: Archer class In commission: 2003 – Active: 2 General characteristics Type: Patrol boat Displacement: 24 tonnes (24 long tons) Length: 16 m (52 ft 6 in) Beam: 3.1 m (10 ft 2 in) Draught: 1.2 m (3 ft 11 in) Propulsion: 2 × MAN 2480LXE diesels, 2 shafts Speed: 32 knots (37 mph; 59 km/h) Range: 260 nm (480 km) at 19 kn (35 km/h) Complement: 5 (1 officer, 4 ratings) Sensors and processing systems: Racal-Decca Bridge-master 360, I band navigation radar Armament: 2 × General purpose machine guns (stern-mounted)
The boat was free but I gave a small donation to the club,(Darlington & District Model Boat Club). Started by removing all hardware, motor mounts, prop shaft, rudder, water-scoops and outlets. Next fill the holes I have made, remove some excess wood. roughly sand down hull. Foam bow area, and glue crack in deck. Find a lot of damage to the fibreglass hull, large chips out of the gel coat and associated stress fractures, and other spider web cracks. Drimmel all crack lines and open up chips and dents, then fill with a filler. an experimental mix of P38 and Araldite, hope it works. Start planning drive options I have a number of items that I have brought and not used that will be put in this boat, otherwise they may never find a home. last picture shows drive option to use up components.
Mornin' Ron, If you put the motor where the batteries are now - where will the batteries go? They weigh far more than the motor so moving them forward will push the CoG even further forward😲 Re shaft angle; as flat as you can get it for the size of prop you want to use. This is to reduce the forward rotation moment of the thrust which tends to push the bow down. The further back you fit the motor the larger the angle will inevitably become due to the space needed for the motor and mount! BTW: Why two NiMh batteries? I would be tempted to change the set up to a brushless and a single LiPo. This will significantly reduce the total weight as well👍 You did say the boat is 'a heavy model'! 😉 Doug 😎