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.....!









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

[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]

Originally Posted by 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.....!

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]

Originally Posted by daiquiri

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 :


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.


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]

Originally Posted by supertrooper

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]

Originally Posted by supertrooper

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=Wez3W...eature=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