If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! I can say that it turned out to be more than what I expected and especially using just one Motor with a relatively low RPM specification. I can't wait to command the large Plywood PT311 next time with the relocated location of the Batteries!!!
I will have our very own DAVID HART who is the official Model Airplane News Magazine Photographer to take some high Resolution Digital Pictures!!
Since the Stuffing Shaft that the boat ran for the first two runs was determined to be too short and the M5 Threads were not enough (too short of threads) to allow for the threaded M5 Propeller and the Backup securing Nut, tonight I finally changed it out to one that has slightly longer length and longer threaded end point. As you will see in one picture in comparing the Old and the Newer one, the Newer one provides much better setup for both the M5 Threaded Propeller "and" the Backup securing Nut. Here is the Video showing the 3rd Test Run with the improved Center Of Gravity by placing the Batteries further AFT and adjacent to the Motor. Location: Calgary Large scale RC boat design and build project - with questions I currently own and race an IOM RC sailboat, and I also designed and built my own custom wing-sailed Class 2 radio controlled ice yacht. So the goal is to create the biggest RC monohull that will fit in my car, and hopefully the fastest RC monohull there is. Nine feet is bigger than any RC boat I've heard of, so I'm thinking that should be big enough.
There is a robotic ballasted (self righting) trimaran running around the oceans going for a record. Your plan sounds very good-a monohull with foils and movable ballast can certainly beat any multihull as the Moth has proven.
Best Foil Shape for Rn 250,000 to 750,000 » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Search this Thread Advanced Search Similar Threads Thread Thread Starter Forum Replies Last Post Questions about a pontoon boat build. When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Giant Scale Aircraft require larger engines, stronger and more servos, and are over all much more expensive than the average RC airplane. There are two AMA recognized organizations in the US that are dedicated to Giant Scale Aircraft.
The International Miniature Aircraft Association (IMAA) promotes the operation of large scale RC airplanes in a safe and informal manner. Ducted Fan and Turbine aircraft must have 140" combined length and widthA true quarter scale RC airplane or larger will be permitted even if it doesn't the above requirements.
If you see an airplane being advertised as "IMAA Legal", then it meets the above criteria and can be flown in IMAA events. This model airplane magazine will give you tips and techniques to build your very own scale version of just about any type of airplane imaginable! The International Miniature Aerobatic Club (IMAC) promotes and sponsors scale aerobatic competitions. IMAC competitions are very much the same as IAC competitions, except IMAC pilots fly Giant Scale RC Airplanes instead of full scale aerobatic airplanes.
An airplane must be a "true Scale" model of a full scale airplane in order to participate in IAC competitions. You will find that most giant scale planes are powered by gasoline engines as opposed to the nitro engine used by most "normal" size RC airplanes. Other than the larger servos and redundant systems, Giant scale RC airplanes have the same electronics as a micro airplane! Most giant scale warbirds have working retractable landing gear, just like the full scale versions. I have extensive keelboat racing experience and I'm a decent sailor, but certainly no designer.
The goal is to enter and win the 2015 Great RC Ocean Race - a distance race for RC sailboats on the West coast of Canada. I have some potential foils already, so based on that can I work out how much sail area I can have?

I have resevations about the Speed Dream project because the keel pivots from the center of the boat making it 100% certain that the fin will be immersed to some degree causing much drag.
Now there are a variety of high quality Giant Scale ARF's for those of us that lack the time or patience to build such a beast from the ground up!
These organizations are the International Miniature Aircraft Association (IMAA), and the International Miniature Aerobatic Club (IMAC). But there are plenty of other events around the country throughout the entire flying season. However, you can still visit their Facebook Page to socialize with other giant scale airplane fanatics! This includes radio control, control line, and free flight planes ranging from tiny indoor birds to gigantic ships!
The fully colored pages throughout shows you crisp images of the mind-boggling detail that goes into spectacular scale airplanes! If you've never watched a full scale aerobatic airplane in action, you really are missing out.
Each year IMAC gets a copy of IAC sequences and tweaks them to make them better suited for RC aircraft. If you don't like building from scratch you can always build from a kit such as the above Top Flite's F4u Corsair kit . I will be entering the unlimited class - must be radio controlled and must be wind powered. That limitation applies to the both the hull length and the rig, unless either can be designed to break down into shorter lengths.
On an RC boat, as long as it's reasonably sealed, how much does it matter if it sits really low in the water? I did find the email option, but your profile seems to be set to not accept emails from members.
I then built several prototypes using a low weight fixed keel for self righting and simplicity with the same system.
The particular type selected was a late MK II with a lot of aerials and no top turret.I used the Aviation News scale drawings as a basis for the design and by coincidence, I saw a very good full colour three side view of RB-U (W3986) in a Dutch book.
My take ,after all that , was that a system with a deep but low weight fixed keel and movable ballast was the ideal configuration for monohull movable ballast. Do I get to a point of increasing wetted surface area by having less boat out of the water than in it?
I have schematics of both a twin pole symmetric spinnaker system(simplest) and an asymmetric system(complicated).
In the same time the tail canons were changed for four machineguns in a FN13 turnable tail turret, and just these changes gave a shifting from the central of gravity backwards!
But that's not as much fun as building it yourself, and I want to be sure it's faster than the competition. To compensate this, the originally straight wings were sawn through and swept backwards for 4,5 degrees and the step also placed backwards. This was the reason that the step became higher and the engines are not longer pointing straight forwards but outwards! So this is not on purpose designed so!The Sunderland made its maiden flight in October 1937 and later the 950 HP engines were changed in 1010 HP Bristol Pegasus engines and given into service to the Coastal Command in 1938 as a MK I. It meant a lot of hours working, because the fuselage was with his complicated forms very difficult and I had just 3 sections!
And Than I started building the Model.The following spring, 1989, my wife Ria and I visited the Hendon museum in London, for looking at the Sunderland MK V there.
Formers are cut from 3mm plywood, and 3mm liteply or balsaply for the backward ones to save weight. On the building-bord was placed a strip of wallpaper (upside down) and drawn on it the centre line and cross-lines for positioning the lower half formers, which were jammed up side down on the building-bord. The tail had to be devisable because of the length, but was build on with provisions for the fuselage-joiners and bolts.

Now the framework looked like a wale skeleton and was planked with 3 and 2 mm balsa sheets.
After drying the fuselage halve could be removed from the board and turned upright, supporting in foam blocks. The rudders are fitted with pinhinges and a long 1,5mm piano wire in a plastic tube and have convex leading edges and are always removable.
As they were ready, on the rear the upper former-halves were glued and the stabilizer was glued in a saddle with the right incidence. Than the fin was glued in, and now I had to decide: Three servos in the tail + tailwheel servo at the rear, or all of them in the front?In the tail could mean extra lead in the nose, a difference of 600 gram total. But in this way I had to solve the problem of a divisible closed loop linkage system in the tail for the inside controlled elevators and rudder. In the tail there are mounted three cranks with a permanent closed loop system (stranded controlline wire) to the rudders.
For the closed loop linkage system to the servos, ballinks with security forks from Graupner were bolted on the cranks. In these supports the wash out and dihedral already have been built in.The framework was built quick, the more longer took the provisions. Applied for example were: servo fittings, throttle linkages, wingjoiners + fixings, plywood strips for the fixings of the wing floats and scale exhausts, landing-lights, torpedo dropping system, flap linkage system (Fowler Flaps) and so on! It is functioning with a 10 kg servo to 2 large self made pertinax bell cranks from which are going out on one side 2 rods. So later on also with the upperside, this will ensure the retention of a true straight wing. To these the radial motordummies were glued and then over these rings a polyester GRP moulded nose ring. The cockpit itself was made of a plywood framework with 1mm plywood strips cyanoed onto it, to form channels for gluing the clear pvc windshields.Wing Floats (pictures 044 + 048)Because of the water these are constructed from foam and planked with 1mm balsa. Struts and floats are braced with stranded wire, one end being soldered to threaded rod with kwiklink.
For water flying it is easily removable, it has to be pulled out of the steel pipes, which are going cross through the fuselage. To manoeuvre on the water the rudder is mixed with the left and right engines which are mixed with each other via a third mixer. The rest of the model was covered with a lightweight tissue to keep the weight to an absolute minimum and 1x clear doped. After sanding primer was sprayed on and rivets were brought on, and finally the model was sprayed with authentic colours (matt 2-component acryl), and weathered to give a believable finish.Markings and codes were sprayed on, final details such as the aerials were applied, scale exhaust pipes were made of thin copper and brass tubing.
My son and I assembled the model, checked everything of importance once again and photos were made.
The engines were started and adjusted, some taxi trials carried out and the acceleration looked good, also because of the double wheels from the beaching gear.Once fuelled up, we were ready for the ultimate test, will she fly or not, are the incidences right, how much run will she need to take off? The model picked up speed quickly as the engines were opened slowly, a little up elevator and she raised her tail, and after a run of 50m and a little more up she rose majestically into the air. What a fantastic sight!Height was gained and I was pleased that no trim what-so-ever was necessa­ry! She flew with the characteristic nose down attitude so evocative of the real aeroplane, no doubt this was of 7 degrees wing incidence! After flying some circuits I made some low fly-pasts just to experience the marvels of such a large aeroplane flying so beautifully and then thought about landing.
With the the engines throttled back and 20 degrees fowler flaps the slow steady approach was followed by a smooth touchdown and roll out.
Once again I had that excellent and very proud feeling.FLYING CONTESTSIt was enjoying flying this model, so realistic and majestic!

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