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>> Home > Tags > twin rudder

twin rudder
rudder
rudder mount
twin motor
twin rudder
Range Safety Launch? by RNinMunich Fleet Admiral!   Posted: 9 days ago
I agree Donnie, I did just that (turning inwards seen from behind for moving ahead) on my twin screw single rudder destroyer. It made it much more responsive to the helm😉 Same with my long thin U26 Type 1A U-Boat. I am making the same changes to my Belfast cruiser, 4 screws, and the Graf Spee, twin screw. Both with single rudder. On my twin screw / twin rudder PTB they turn outwards. Cheers, Doug 😎

Battleship Missouri by Mikep Lieutenant   Posted: 18 days ago
[Score: 5/10] 55" Battleship Missouri Capable of 4mph and a runtime of 20mins Twin Propellors (4 Blade 35mm) Geared to a 6 volt (4 Blade) Powered by NiCad (6v) 3Amp/h Batteries Controlled Through Hitech ESC - Comments: Modified Sterling model kit, scale drive 4 shafts. Twin rudders, smoke and cannon sound module.

RE ads90's Vosper Firefloat by RNinMunich Fleet Admiral!   Posted: 23 days ago
Hi Neil, Looks like a somewhat simplified Range Safety Launch to me, the 43ft version from 1955 - , but the number is dead wrong. http://www.rafboats.co.uk/rsl43.html Scale between around 11 - 12 to 1. LoA - 11.7 Beam - 11.1! Twin props should ALWAYS turn in opposite directions to counteract the so called prop walk which otherwise shifts the stern sideways in the direction the props are turning - seen from behind when the boat is moving forward. the jury is still out on whether they should turn outwards or inwards; with respect to the top of the prop when going forwards and seen from behind. Separate motor control (so called 'Tank Steering') is great for slow speed manoeuvrability and very sharp turns at speed (to be used with caution!), but is not easy and needs a lot of practice! A twin ESC / Rudder Mixer is easier😉 For scale; 3 blade props. Suggest you start a new thread for this. Ciao, Doug 😎

What do you do when... by Steve-Teresa Sub-Lieutenant   Posted: 2 months ago
Its possible we have all had this issue.. boat in the middle of the pond not working, I used one of the other boats I have to retrieve it, not very easy.. I am thinking of building a rescue vessel, square(ish) front, twin prop's and rudders tucked out the way for reversing and with soft rubber edging all around it to push or even guide (if damaged rudder) any boat back to shore.. or is this going a bit far?.. your thoughts or what you do when or if this happens when your out on the pond?

Warped wood by RNinMunich Fleet Admiral!   Posted: 2 months ago
Hi John, yep, as mentioned above I know them and have some of their modules. Sonar sound (pinger) for my destroyer, twin ESC with rudder mixer, will probably also go in the destroyer. With a 12:1 LoA to beam ratio she needs all the help she can get for a sharp turn 😉 Delivered pronto to Munich as well 😊 Well made and highly recommendable 👍 Their documentation is also superb, 5 stars! Phew, just finished stripping the PTB hull, now I've got two hulls to sand, seal, strengthen and paint! All go folks 😁 Cheers all, Doug 😎

LED Tug Mast Navigation Lights by RNinMunich Fleet Admiral!   Posted: 2 months ago
Afternoon Pete, Not awesome 😉 just 'Been there - Done that'! Albeit on older versions. So; now we're getting somewhere. Good idea with the connector 👍 I plan to do that with mine as well. I took it apart to investigate adding smoke, lights and sound. And possibly a twin ESC rudder mixer. Project got shelved when I got deeply involved by a couple of renovation / conversion jobs. 🤔 You've inspired me to bump her up the 'To Do List' a ways 😉 Now we should be able to trace the wires back to the circuit board😊 Will send a Step by Step procedure tonight. Gotta go fix a rotten fence now 😡 Cheers Doug 😎 PS: I was also impressed with the quality and fit of the mouldings. Good tooling 👍 PPS: You may find this thread useful https://model-boats.com/builds/view/34234?goto=34235 Neil has also been down a similar road. 'Jarvo' as well, who came up with some useful tips, esp re locations of hidden screws😉

MAS 562 update by CB90 Admiral   Posted: 4 months ago
Skinned the frames added deck and splash rail also started on cabin and superstructure, added rudder and installed twin brushed Graupner 600 motors via Graupner style direct couplings. Motor mounting system through a bulkhead gives extra support to motors which mount on to end of the shafts. currently adding a rudder servo mount, as rudder is a close copy of the real boat's and still functional.

Scudder by Grumpy1949 Lieutenant   Posted: 4 months ago
Vic Smeed plans of a rather ugly twin pontoon hydroplane air driven. Runs a 35 ic but will have a brushless 300w turning a 8x6 electric pusher. Water rudder pivot fwd of prop thrust line. Photo shows most of the detail with styrofoam flotation built in

Any clues? by aanside Sub-Lieutenant   Posted: 4 months ago
"This is certainly NOThe the model of a Thames or Coastal barge hull" I had come to that conclusion. Researching typical twin masted vessels with that sort of beam (thereby ruling out most schooners) it could be a Brixham Trawler or some kind of ketch. One suggestion was a Moray Firth Scaffie but I need to go to one of the local museums to see if there is a model or a drawing. Interesting clue - the rudder post is carried above the deck. I guess half the fun is trying to see what I can make of it and then get it on the water.

H.M.S. BRAVE BORDERER by RHBaker Fleet Admiral!   Posted: 4 months ago
Just to clarify. Shipping was only 7 days to Canada, manufacture slightly longer. Examined the hull closely and was pleased. It is dimensionally accurate and robust, but light. It had also been reinforced in strategic areas and trimmed to the correct deck line. My many questions to Christian Sheppard – Capurro of MTBHulls were quickly and knowledgeably answered. A company I would recommend others. Reviewing the build blogs and U Tube videos of the both the Brave and Perkasa models, shows most use either single or twin screws. The original vessel had a triple screw contra - rotating layout. Experience from others suggests the third screw just adds weight and complexity, but little to the performance. Nevertheless, it was how the Braves were built, so that was how it would be. Christian gave several suggestions for other modelers who have built this vessel. Contacted them and was readily provided with information and advice. The finished weight of this model is important and a target of around 6 lbs recommended for a 1:32 scale version. This is to achieve the potential performance. Plans for drivetrain are 3 x 2835 4500kVa brushless motors, direct driving 3 x scale 3 blade 30mm screws. Decided use a single Li-Po battery for the best performance with minimum weight. It was suggested three batteries, each powering a single motor would be the best layout. After some research, concluded this would introduce a weight penalty and was discounted. There are various ideas for the best drivetrain. Unfortunately none for triple screws. Decided the best approach would be to fit the bare hull out as planned, then try it. Leaving all the finishing features for later. A contact in Australia had already done this using a single screw layout and kindly sent pictures of his hull layout and then under test. Very informative. The positions of the rudders, propellers and shafts are established by the scale dimensions and were permanently installed. Everything else was to be temporarily fitted, so it could be moved or replaced if necessary.

British Air Sea Rescue Launch by deepdiver Commander   Posted: 5 months ago
Hi I also went and got this model, that would have been about 18 month's ago, I have still not finished it. Could not get anything to fit right, so in the end I just went for it, twin rudder along with twin props, 😱 just hope that it will work O.K. FRED

Graupner ranzow refitting by kmbcsecretary Fleet Admiral!   Posted: 5 months ago
here we have some pics of the electrics as requested the first pic is of the mtronic 650 motors for main drive. second pic is of the twin rudder control. the third pic is of the water proof voltage dropper and connections for 5v power supply to some of the aux, Ron

Interceptor by CB90 Admiral   Posted: 5 months ago
[Score: 8/10] 24"/2000g Interceptor Capable of 15mph and a runtime of 10mins Single Propellor (2 Blade X Type 35mm) Direct Drive to a 2958 watercooled (2 Blade X Type) Powered by LiPoly (11.1v) 6Amp/h Batteries Controlled Through Unknown 200A (100Amps) ESC - Comments: Zoom 1 (Interceptor) Mono boat. Built from a Glassfibre hull, brought on Ebay for £35 the hull is a slim mono racing type with a self-righting side cabin it runs a 1400W 14V 2958 4200KV Brushless Motor and 29-S Water Cooling Jacket with additional air cooling fan. I did not want to use a flexi drive as high maintenance and prone to failure so the shaft runs via two universal joint one at each end. the propeller is a 38mm copper alloy The ESC is a 200A and water cooled the twin rudders supply separate water one for the motor and one for the ESC. The rudder are positioned to reduce prop-walk and are hinged to prevent damage if hit a object in the water and ride adjustment. Turn fins and trim tabs for ride adjustment were provided by a spares kit for another boat. also foamed and added an inner sealed hatch, a rubber bump strip and safety loop. The Boat is fast and over-powered used at half throttle, may use a 7.4v lipo instead, the self righting works well. 20th April 2018 while running on 11.1v the boat stopped, no response on retrieval It was found that the manufacturers battery connector had melted and the connection lost see later pictures. the battery was made by FLOUREON and was a 35C with 5500mah capacity the 80A fuse had not blown.

Command Boat 90 by CB90 Admiral   Posted: 5 months ago
Scratch built at 12th scale from pictures and profiles of the internet. The boat was originally built in Sweden a class of fast military assault craft originally developed for the Swedish Navy by Dockstavarvet Speed: 40 knots (74 km/h) Draught: 0.8 m (2 ft 7 in) Length: 15.9 m (52 ft) Overall; 14.9 (48') Complement: 3 (two officers and one engineer); Up to 21 amphibious troops with full equipment Armament: 3 × Browning M2HB machine guns; 1 × Mk 19 grenade launcher; 4 naval mines or 6 depth charges . The Model I was attracted to this boat due to its great performance and maneuverability, this was mainly due to the use of twin water jets as the main propulsion, this is a trade off with efficiency. So my start point was to collect as much information as possible about the boat this involved collecting pictures and profiles of the craft from various sources. http://www.dockstavarvet.se/products/combat-and-patrol-boats... Eventually I found some plans of sort :- http://laurell.today/boats/combat/plans.html My Dad was a boat builder in the days of wooden yachts, and had showed me how to make plans and frames from a line drawing. I went about this first by creating a prototype about 24 in long out of light ply. I then created full size plans of the model to be made. Pictures of small prototype finally painted plain green. The Main model Used my computer to print out the frames onto paper, cut them out and used them as templates for the ply ribs. The construction was simple chine style, with 1.5 mm ply. I tried to build jet drives but failed to produce a effective unit. So reverted to propshafts which worked out well with better control and the boat can spin on it own axis by putting one engine in reverse the other in forward and adjusting the twin rudders. That it for now, hope it was of some interest

Zoom 1 (Interceptor) by CB90 Admiral   Posted: 5 months ago
Zoom 1 (Interceptor) Mono boat. Built from a Glassfibre hull, brought on Ebay for £35 the hull is a slim mono racing type with a self-righting side cabin it runs a 1400W 14V 2958 4200KV Brushless Motor and 29-S Water Cooling Jacket with additional air cooling fan. I did not want to use a flexi drive as high maintenance and prone to failure so the shaft runs via two universal joint one at each end. the propeller is a 38mm copper alloy The ESC is a 200W and water cooled the twin rudders supply separate water one for the motor and one for the ESC. The rudder are positioned to reduce prop-walk and are hinged to prevent damage if you hit a object in the water and also for ride adjustment. Turn fins and trim tabs for ride adjustment were provided by a spares kit for another boat. also foamed and added an inner sealed hatch, a rubber bump strip and safety loop.