WWSR challenge?

[Himself247]

Hi rc-people.

I have a question. What is the current record, for the worlds fastest rc-boat? And is this record performed with propellar or waterjet? Is it at all possible to build waterjets i such a small scale?

I have dissigned something that i'd like to know if can be built... Is i possible to construct a boat, using twin jet engines like the ones used for planes?

Check out my picture and telle me what you think....

[timo2]

Hi 247

Check out the site at for a model

http://www.speedline-models.com/page25.html

Timo2

Hope this help you :)

[Kmot]

The world record for an r/c boat is held by Joerg Mrkwitschka of Germany at 140 mph, two way averaging. It was set at Legg Lake in Southern California. It is an electric motor powered boat using a propeller. He has actually gone 160 mph in his boat but it flew off the water after a one way pass.

[CG Bob]

The 140 MPH record (http://www.namba.com/content/records.asp?EventType=11) was set by an ELECTRIC powered boat using a brushless motor and 48 Volts. The nitro speed (http://www.namba.com/content/records.asp?EventType=10) record is around 124 mph and gas powered record is around 110 mph. The full size (man carrying) boat speed record is 317 MPH (511 kph) set in1978 by Ken Warby of Australia.

[Himself247]

The full size (man carrying) boat speed record is 317 MPH (511 kph) set in1978 by Ken Warby of Australia.[/QUOTE]

I knew about Ken Warby. :) A very impressive performance considering that he built his boat in a shed, using nothing else but his common sense and his knowledge on hydrodynamic design. Now there are two seperate contenders, who are designing and building new boats to challenge the "Aussie". And the budgets they are operating with, is way of the charts to me. 20 mill dollars versus 20-20 mill pounds.... Hillarious!

The question i was asking actually has two sides. First i wished to know the current speedrecord for an Rc boat, and next i wanted to find out wether you think it would be possible to sail with a concept like the one shown on the picture... Just take into consideration that im a complete novice at this rc game, and the picture is only an initial design idea. I have redone it several times, to increse the boats virtual performance and to make the whole design more dynamic.

So far the responses has only helped me a little, but i thank you for the reactions so far....

[arrow5]

So far is it only the aerodynamic aspect you are considering ? Power should be first consideration IMO. Forget water-jets , gas turbine has more power than anything else and will push any vehicle to remarkable speeds on pure thrust alone. Design of the craft will probably not be very sophisticated or slippery looking but more engineering than PR. Probably a "slug" look about it. Radio control will have to be to a very professional standard with a few fail-safes including a drag-chute. A tethered version might be a good starting point. Ingestion of water to blades turning in excess of 100,000 rpm will be a problem. 200mph would be a goal to start with. Visibility at these speeds on the surface will be much greater problem than in aircraft doing same speed. Go to a model jet aircraft meet and watch a few of those in action. Engine prices start at a couple of thousand $$$ up. You`ll need a sponsor, a university engineering research group and some talented missile crew members. Good luck.

[Himself247]

"You`ll need a sponsor, a university engineering research group and some talented missile crew members. Good luck."

Thank you.
That was the most informative response so far.... And the most enlightening too. :)
But it seems like there i no further point in persuing this thread, so i'll close it with this... Sponsors and technical assistance in an endeavour such as mine, are not easy to come by or even meet. It may seem like a madmans phatasies, but the dream is none the less one of my favorites. All left to say is, that i'd be honoured if anybody would pick up on some of my design ideas, and perhaps sometime in the future let me in on what results if any have come of them.

[arrow5]

I hope you will pursue the dream and the thread. Sponsorship is not impossible just difficult. Research into speed on water may well be under study at universities and other research bodies, why dont you phone around or check prospectus of the likely places? One thing leads to another. There is a modeller here in the UK that has built and operated a gas turbine powered K7 Bluebird A scale model,not a record breaker, but his experiences must be worth a read. A search on the web or www.modelboatmayhem.co.uk will find him. I believe there was/is a clip on Utube or Putfile. I dont think he was interested in top speed but it looked,smelled and sounded like the real thing. How about dropping a line to the Aussie contender with your idea, might be some feedback there. What other ideas have you to show apart from the illustration on your first post ? Any engineering or construction ideas? I`m sure the guys on this forum will chip in with help. It is a fascinating subject.

[Shaun Hendricks]

There are plenty of Micro turbines that could be fit into a boat. Look at the jets section of the boards.

You have some large issues to take on as water itself doesn't scale and control will be a HUGE factor. I don't even think most RC grade gyros could react fast enough to assist in a super high speed run, not that a human could react as fast as they can so they'd be better than nothing.

Given the right water and air conditions... you might be able to pull off a seriously cool feat, or send about $10,000 to the bottom of a lake... :D