Coastal Cruiser

Rick's conceptual electric day boat

Rick have you had any more thoughts about your proposed day boat since post #37? What size would it be? What is a day boat? would it be self righting as well? Open or closed top?
Harry Tams
Tasmania

 

Harry
The day boat I have in mind would be for just playing about in on river and coastal areas that can be got to without overnight cruising.

I started to think along these lines when a fellow asked me what a 6HP racer for two-up would look like. I came up with the attached.

I have not taken the idea beyond that. It is like an extended version of a pedal boat but large enough to get inside. It would need more area for solar panels either on the wings or cabin top.

I had not got as far as thinking about a cabin in detail and self-righting. It might be difficult to get self-righting. I expect it would pass through waves quite easily so rather than a deflector I was at least considering a heavily raked windscreen with a sliding hatch overhead.

I would probably make the stabilisers longer than shown in the sketch.

The hull would be basic but allow me to test the solar panels I am interested in. It is something I could build at home as it is light enough for me to handle. The target cost AUD10k. I already have motor and controller. I expect about AUD3500 for a couple of decent solar panels.

Rick W

 

Thanks Rick. I thought it would be a scaled down version of the 'yellow boat'... just made an assumption... just hoping.

You refer frequently to the 4.5KW electric motors. How much do they cost? Is placing it into a bullet housing as Bert plans to do an effective method versus through hull shafting?
Harry

 

Harry
I will be looking at a curved shaft with a large diameter prop. I will use a strut at the prop to take the thrust. The torque is not very high and, as long as it is in the water. there should be no risk of critical frequencies.

The Mars motor is about 200mm in diameter so a bit big for a pod on a fast boat.

I got my motors and controllers from Kelly Controls. The motor was USD450.

My aim with the motor installation is to keep the motor away from water because it is not waterproof. It is open to help cooling.

Rick W

 

My apology Rick. I did not know that I am not allowed to give you an compliment that I like your design, nor that I should talk to this boatbuilder who makes a very strong light chimes hull construction and could have your aim to reach 1000kg a reality. Only people like Fanie who run their own country down seem to be allowed to say something.
Sorry, it want happen anymore. I thought to put some flavour to the threads, even if we slightly deviate from the topic, but always come back to the core of the thread.
Bert

 

See http://www.boatdesign.net/forums/open-discussion/my-rant-29583-4.html

 

Bert
You have taken the meaning 180 degrees from intended. I do not claim this thread and do not think you were claiming it.

It is an open forum and let the thread goes where it likes.

Rick

 

claim of thread

Rick, creator of the thread, having abandoned and repudiated without qualification all rights and claims that might be conferred by origin, and Bert current occupant of the thread by force of pen, having abandoned and repudiated without qualification all rights and claims that might be conferred by possession, and this thread being encountered as an uncontrolled thread upon the high internets as a significant and substantial hazard to navigation, I do hereby in the name of the Great State of California and subject to all laws and duties thereof hereby claim this thread and take full possession and control of same for purposes of ensuring safety upon the high internets and with the intention of returning this thread to useful and productive service as a discussion thread.

Subsequently, as the current owner of this thread, I do further declare that this thread shall be a thread primarily about cute and fuzzy kittens. Subsequently, no one shall post any notice, comment, supposition, conclusion, or any other sort of post upon this thread unless such post is accompanied at the minimum with a photograph or other representation of a cute and fuzzy kitten.

Thank you for your cooperation.

 

Hello Dave

I didn't know there are any ice breakers (pun) in San Francisco

Here's your cat (pun)

http://newsflavor.com/alternative/worlds-first-surfing-cat/

http://www.wackyarchives.com/offbeat/surfer-cat-is-amused.html

Quite cool, but then, isn't that what you'd expect from a cat (pun)

 

Hi Rick, I am fuly aware that you don't claim ownership, if you were the hell in with me, I would have received a private message from you.

I will be driving this week to Cape Town and see the boatbuilder in the hospital. He is 74 and has in my view, a hard time. I cannot guarantee that he is willing to part with his secrets, but it could indeed be a solution to reduce the weight of the hull, with his very light and strong hull construction methode.

If I am not lucky with NZ, I may have to ask you, whether you mind, that I follow your footsteps and copy your idea, but on a smaller scale.
Bert

 

Bert
I can do basic hull layout based on your earlier weight estimates. It could be built in ply. Something you could take to your builder if he gets over the heart surgery in good shape. Maybe even one of your SA mates like Manie or Fanie to provide some asistance.

Rick W

 

I note a distinct lack of kittens in the last two posts. As you are both former owners of this thread, I am willing to grant a bit of leeway here, but in the future, please attach cute fuzzy kitten photos as required by my takeover notice.

Thank you for your cooperation.

 

Thanks for the offer. I will wait for NZ. I don't mind any assistance from Manie or Fanie.

Do you have objection if I take your original design from about 10 months ago and show this to the boatbuilder and ask him whether his "low weight" solution, also could be applied to your design and how much weight it could save, versus the standard computer program calcualtions from everybody?

 

Bert

What is it that you want to do and what is the purpose of the boat.

I know you want a light electric driven vessel, but what size, is it a day sailer, berting, galley, trailable, 12 people etc. Also who will go with you, the wife, you alone, kids etc.

Will you consider an additional small outboard or a sail. I assume you want to go on the sea, it's not a frsh water thingy ?

Also what do you expect from it wrt speed, weight and any other properties that may be important to you.

Does it have to be a mono hull, trimaran or cat.

All these things play a role, it is sometimes frustrating if you have the wrong impression and make suggestions that doesn't help.

 

Hi Fanie,

I have already ordered the plans and paid for them for the 18/20 feeter. Speed is not a priority for me. At my age, I don't have to wooh the woman, like the upcoming RBI's (refer the marketing thread)
It will be a comfortable monohull, and Rick so kindly gave me the indication at what sort of power I must have to trot at 5-6 knots. (2,2 Kw)

I am fustrated, because I have paid for the plans, and does not get a reply as and when I can expect the plans, nor when they have posted them.

Because of an incident 1,5 years ago, whereby South Africans did run their country down, and this boatbuilder had reacted to that, I had, at that time already problems to get some answers on my questions. It could very well be, that this is still an aftermatch of it.

Yes, you can help me, tell everybody how beautifull and marvelous South Africa is. Do you know that in Holland every year some 15.000 scooters are being stolen? (Official news report on BVN) What I try to say is, there is no country perfect.

Thanks Fanie, as soon I have the plans I will certainly start a thread and seek advise, suggestions or comments.