ultimate RC yacht

[supertrooper]

i was wondering if anyone had some ideas or previous designs that they could share with me as i would like to build the ULTIMATE RC YACHT

max length 2m
max width 30cm

now lets see how creative we can all be

[SViau]

Sailing yacht ? Motor yacht ? Electric of thermic engine ?

[SViau]

I recently achieved a 1.50m interceptor full carbon with a friend, with twin petrol engines and surface drives.
We hit 90km/h last week, during its last speed test. You need cat's eyes to follow her on the lake.....!

http://sylvain.viau.free.fr/Maquettes/DV15/DV15-Nav08.jpg

http://sylvain.viau.free.fr/Maquettes/DV15/DV15-Nav12.jpg

http://sylvain.viau.free.fr/Maquettes/DV15/DV15-Nav09.jpg

http://sylvain.viau.free.fr/Maquettes/DV15/DV15-Nav11.jpg

She cannot be really called "yacht", but for sure she is RC :D

[supertrooper]

yer i was meaning more of a sailing yacht or skiff type of boat

that boat looks sick

[SViau]

Looks not painted yet......

[daiquiri]

I recently achieved a 1.50m interceptor full carbon with a friend, with twin petrol engines and surface drives.
We hit 90km/h last week, during its last speed test. You need cat's eyes to follow her on the lake.....!

You could make a nice experiment with that missile. All that water centrifuged upwards is a waste of energy. You could install a properly shaped plate above the prop to direct the water downwards and convert the otherwise wasted energy to thrust.

[supertrooper]

paint is too heavy

[SViau]

You could make a nice experiment with that missile. All that water centrifuged upwards is a waste of energy. You could install a properly shaped plate above the prop to direct the water downwards and convert the otherwise wasted energy to thrust.

Surface drive props = rooster tail.
Each time somebody tried to get that tail down, there was a trouble in propeller proper ventilation.

Original interceptor is exactly the same :
http://sylvain.viau.free.fr/Maquettes/DV15/DV15-reel-02.jpg

Model propulsion is done with surface piercing props, but with rudders.
It was not possible to achieve a directional surface drive at that size and for that amount of power.
http://sylvain.viau.free.fr/Maquettes/DV15/DV15-Nav03.jpg

I was in my previous job R&D Engineer for these surface piercing props and drive system (real ships, not model ) - Sometimes things were not working the intuitive way...

[supertrooper]

anyone have any ideas for it?

[Guest625101138]

anyone have any ideas for it?

http://www.microsail.com/video/msemailintro.mpg

Try Doug Lord.

[supertrooper]

dont patronise me i was serious

[tom28571]

Who was patronizing?

[Guest625101138]

dont patronise me i was serious

Not sure what you mean here. I like the flying tri. I think a larger scale version of this would be fun to fly.

If you do not want to try Doug then there are heaps of clips on Youtube of fast RC sailing craft:
http://www.youtube.com/watch?v=al2JDpWPt6E
http://www.youtube.com/watch?v=Wez3WMuHRuM&feature=related

Something more adventurous:
http://yachtpals.com/sailrocket-sail-rocket-4021
http://www.macquarie.com.au/speedsailing/gallery.htm

[ivor Bittle]

You need to be much more definite. What do you think that an ultimate yacht would do? Would it be the fastest yacht round a set course? Would it be the fastest in a staight line? Would it have to sail in a swirling wind? Would it have to cope with sea conditions?

If you do not set some goals how can you decide whether the outcome is the ultimate yacht?

Ivor Bittle

[supertrooper]

the fastest around the course so i was thinking an asymmetric spinnaker canting keel and
carbon fibre construction
a flying try would be sweet like the mini 40's
i was just wondering if anyone had any designs that could be modified and changed to suit the short and simple brief

[Guest625101138]

the fastest around the course so i was thinking an asymmetric spinnaker canting keel and
carbon fibre construction
a flying try would be sweet like the mini 40's
i was just wondering if anyone had any designs that could be modified and changed to suit the short and simple brief

Did you actually look at the video link of the boats I posted above. I believe the blue mono is a canting keel carbon fibre vessel. Not 100% sure. You would need to check with Doug.

Also I think his foiling tri outperforms the mini 40s. Again you would need to check with him how it goes against them. I don't think it is a prone to pitchpoling either.

Rick W

[Doug Lord]

the fastest around the course so i was thinking an asymmetric spinnaker canting keel and
carbon fibre construction
a flying try would be sweet like the mini 40's
i was just wondering if anyone had any designs that could be modified and changed to suit the short and simple brief

=========================
ST-why is your rule so restrictive? Even if you used a canting keel it wouldn't work well at all in model sizes with a relatively narrow beam like that(when canted the keel would exceed the beam rule). The F3 is without a doubt(I think) the easiest to sail FAST boat around(same two channel system everybody grows up with) and like Rick says it doesn't pitchpole.But it is 72'' wide and 59" long! You should know that radio control has come a long way in the last few years and the possibilities of multihulls or monohulls with movable ballast,gyro assist, asy and sym spinnakers is much easier than when I first did it 15 years ago. You could build a really hot skiff or foiler or cat or tri now with gizmos that would bring rc sailing into the 21st century IF you don't get bogged down in antiquated rules that have kept rc sailing in the 60's and 70's far too long. Good luck and keep us informed..
Here is a boat that I don't recommend(microMoth) but that in an improved two meter version would be a candidate for the "ultimate rc yacht" and a couple of pix of the Melges 24RC with asy spin and on-deck movable ballast:

[Sean Herron]

Hello...

See http://www.boatdesign.net/gallery/showphoto.php/photo/12494/ppuser/3673 ...

See http://www.boatdesign.net/gallery/showphoto.php/photo/12467/size/big/cat//ppuser/3673 ...

SH.

[supertrooper]

has the micro moth ever foiled?

i was thinking that the hull would be 30 cm wide and the keel could exceed that i dont really think a foiler would be suitable i was thinking something more like leopard 3 but in a scaled down sorta thing

[Doug Lord]

Yes,but not well-needed several things including f&a movable ballast. But produced flashes of great speed just before a spectacular crash. No reflection on the concept-just faulty(I shoulda known betta) design. R&D....