I make had a few emails regarding the plans I drew upward of the small Dumas V soh I thought some of you might want to try out this small 18 We convey equipment for Remote Controlled Fast Electric manikin.
There are lots of things to consider when you decide to buy an Rc boat for the first The similitude hull design makes it both faster and so type A deep vee with the added. Location: Venezuela boat hull design (pad design) Hello, my name is Cristian,this is my firth time here, and i would like to know somebody hellp me. I have a powerboa 16? vee fiverglass 22? 140hp looper, and i like to put in it a pad but i don?t know the dimensions (size), and how it comport in the boat, i have very much time driving boat, but never with pad, and i need the pad for more speed and woul like to know about the size of a box of water that the people do for blow off in final of transon and bow.
I'm not familiar with the calculations for retrofitting an existing hull with a pad; most boats I see with one have it built in from the start. Location: Venezuela thanks matt, bu i like to know what is small size in inchs.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. I thought I would offer up a 22ft hull for anyone who wants it (see attached picture, Rhino and ACAD files). I would appreciate if someone with experience of this size and type of design would comment on it. It is not my skill but rather that Rhino (that I used for this hull) is really good at making developable surfaces. Location: LA Developable surfaces Houndie check your version of Rhino, they had a bug un-rolling surfaces until release 3, SR3c.
Location: LA 22 dev hull Jeff, I did a quick loft and un-rolled your bottom plate, see if your version of Rhino reads the attached file. The increase in size when you develop a surface should not be a problem but I am no expert on this. I less suspect the accuracy of the computer expanded plates as much as the nature of hand building hulls without stiff jigs. Location: Sweden Will they sell this Wally boat to Bin Laden folks or is it a leisureboat for drug trafficers and wannabe navy captains? Location: Southern England Renato Levi Wrote three books on the subject of designing Powerboats. Best book currently available on powerboat hydrodynamics is Hydrodynamics of High-Speed Marine Vehicles, by Odd M.
If you are working in Aluminum, go to ABS, Lloyd's, or ISO and get rules for construction of high-speed vessels. Jet boats are tricky, most major water-jet manufacturers have lots of data on what works, talk to the supplier. A phenomenon known as porpoising can occur if you are not caqrefull of what you are doing on the bottom, particurly in the 6' infront of the transom. Make the delta pad on the bottom nice and long, no-one says that the boat needs a 'keel', where the bottom sheets meet to form the vee. Look at other jet boat manufacturers and what they do, we spend many hours making sure we get it right so we can sell a safe and well performing product. As has been said the key is power to weight and planing area in both laden and light conditions. Boston Previous Member   which is why I posted lines of the Downeast hull form, so folks could get a clear image of the type of hull commonly associated with a lobster boat. If your using a hull form of a traditional lobster boat people just might refer to is as such, specially if the top sides and sheer also resemble the layout. Location: Flattop Islands Once again Boston you have posted a question that could be addressed by writing 3-4 books. From Massachusetts to Nova Scotia there are hundreds of versions of Downeast Lobster Boat hulls, some good , some bad, some indifferent.


Understand that these boats are built to make money, everything else is just gravy, if they don't make money they are put out to pasture.
Originally Posted by Tad Once again Boston you have posted a question that could be addressed by writing 3-4 books. A stretched version of White Pine will produce a very easily driven hull, if the weight is kept in check.
I would imagine that often the boats are loaded down with pots only a few times a year, at least the inshore boats, the pots spending most of the time in the water. I?m in the process of setting myself up for retirement and part of the plan is to upgrade my boat.
I would like to be able to go across to Tasmania (120 - 450 nm depending on landfall chosen) or coastal hop up to the Great Barrier Reef and on to Darwin (longest leg I'd do around 450 nm). I do like the looks of White Pine but think it may be a little slow (her max is listed as 15 knots and I'd like to have some in reserve). The production boats available in Australia do not ?tick all my boxes? so I am seriously looking at building here (importing is not very attractive at current exchange rates) and we have 3-4 competent wooden boat builders where I live so this seems like my best option. If she's kept simple (light) you could expect 14 knots with about 120 HP at the prop and 12 knots with 73 HP. I got some feed back on onother forum that the down east hull is stable to a degree but in heavier seas its stability drops off fast. I like the way the beam narrows toward the stern and I also like the ?raised? floor and kitchen up in the main cabin area. The head could be a fraction bigger so the ?shower? has a bit more room (I?d use this for hanging wet gear as well). Finally, last night I became aware of some select grade Alaskan Yellow Cedar planks (6? x 1? & 10? x 1?) that are available in near me, so I am thinking that this would be a good timber for planking the boat as I?m told it is light, strong and easy to work. She has a round bilge clinker planked marine plywood hull with an open wheelhouse and a lower cabin with moderate flare forward and good size cockpit deck, strongly raked stem, transom stern and hinged timber slatted marlin platform. There is a very long way between these educated guesses and the real life finished boat, but the expectations are roughly in the range of possible. The largest single weight in this boat will be the fuel load, so that capacity needs to be considered carefully.
Location: Flattop Islands I'm also very jealous of the Yanmar engines available in Australia. A 60' hull that displaces 53,400 pounds will require 44 Hp at the prop for 9 knots in flat water, no bearing looses, alternator drag, no current, wind, waves, no bottom growth, no appendages, etc.
Originally Posted by Tad I'm also very jealous of the Yanmar engines available in Australia. Click on the thumbnails to download the disembarrass plans to body-build a seventy-two inch rc boat hull designs. It is simple and rather straight, 16deg deadrise, outboard hull with developable surfaces (plywood or alu). I made an effort to use low degree curves to create the surfaces thereby it is easier to keep them fair. Also, you cannot fair control points on the surface membrane stretched between two curves without making it non-developable.
Saying its a cone is a little simplistic, see the graphic where I projected the side shell past the chine and sheer of my deeper vee hull. The deviation should be absorbed by most manufacturing process tolerance, I would guess even if you used a CNC machine.
The bow waterlines could be slimmed by moving the forefoot aft or a more gradual turn up from the keel. Such assembly precludes the attainment of the tolerance of the NC cut parts during field assembly.


I understand it's a v-hull or deep v-hull but can anyone give me a clue to some reference pictures I could use. The merc sj175 does offer a reasonable amount of thrust, but the downside is that in their infinate wisdom, Mercury put the exhaust from the engine in the cavity between the hull and jet unit. I tend to think of those that do as 'old school', and perhaps we should scrap the shuttle and fly the appollo missions again. As in aerospace, the trailing edges create a vortex, much like the tips of a wing, only in water that usually means that air is bled off, if that air makes it to the intake the pump will cavitate causing loss of thrust.
No way they would be so popular among the fishermen if they were not well suited to it; not just the bay, but the open New England waters as well. I have recently joined the Royal Victorian Motor Yacht Club and this has given me the opportunity to look at a wide variety of boats and narrow down what I would like?..
I have looked at a locally built boat, a Cheviot 32, and it is lovely but just a bit to small for me, plus access to the bow is more difficult than I would like.
Do you have any suggestions on how this design could be ?improved? to achieve (or exceed) these sort of targets while still meeting what I am after?
The lower cabin has a kitchenette, a separate toilet with wash basin and two bench seats that have been set up to convert to a basic double berth. According to the design of the hull gas constant coke boats whitethorn be classified in two main types single-channel are those hulls which can surface offers type A continuous wet surface.
Boats Trucks Cars and Planes including It has been over 10 years sinc rc boat hull designs.
Also the surfaces are of degree 1x4 (using 2x5 control points) which is key to make them easily developable. The expanding plate question is a good one, I have done a lot of large aluminum hulls and do not provide shell plate geometry. I'm designing the hull from the general dimensions of the boat, what I can see above water line, the water jet location, and the rest is my imagination. As I remember, they are nigh impossible to get hold of (you may have to order directly if you can find the website) but they are well worth reading. If you have a 'rocker' the boat will bounce around, or porpoise, if it has a hook it will bow steer badly, possibly causing the boat to spin in a turn. Look at not only straight line performance, but also where any vorticied will end up in a tight turn (if you terminate your strakes ahead of the intake), if the unit cavitates during a turn and you loose thruse, a real nice jet spin often occurs, sometimes at an inconvient moment!!! Brant rock ( well off the south shore ) has got so many buoys floating around it you could walk across em and its out in the middle of nowhere, definitely not protected water and we fixed plenty of boats that worked there. Plan1 Offshore Large Scale RC Boat plans 72inch kissing disease Hull Plans RC Monohull Plans. The best way to process a developable plate hull is to fair the sheer, and chine (or chine to keel), loft a surface between the two and leave it alone. When I did this edge extension to yours it twisted which is ok as long as those lay lines don't twist or intersect within the section of the plate you are trying to un-roll. If any of you could give me some clues as to how the hull looks beneath the water line it would be greatly appreciated. I have seen many designers try to get flair into the bow of a developable hull since they appear to bow out.
Its just due to the bow shape being a portion of a cone, which is single curvature and the only surface it will accept to create flat patterns.
I would like to hear others opinions about how much luck they have had with building from a computer shell expansion.



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