ScaryKat By Paul Thomason

[lnvisiblemanParticipant @lnvisibleman]

I know it will be a while yet but I am getting the workshop ready for this one.

Hammers are polished, screws are sorted ( 2" x No 8s will do ) axes ground, Gripfill at the ready.

A pair of lightweight brushless motors on order and a suitable esc. **LINK**

**LINK**

Thumb twiddling starts now.

Mike

[lnvisiblemanParticipant @lnvisibleman]

Building his latest design. I feel The need for SPEED

[ashley needhamParticipant @ashleyneedham69188]

Mike, do you have the small nuclear reactor sorted to supply this sort of current to your drive??

You do mean a PAIR of ESC dont you??

Ashley

[lnvisiblemanParticipant @lnvisibleman]

Ashley

I forgot to mention that. I have a contact at Stark Industries that is helping out with that part.

http://fc07.deviantart.net/fs70/f/2012/154/4/f/iron_man_arc_reactor_by_jamezzz92-d525l6b.jpg

Mike

Yes I did mean a pair.

Edited By lnvisibleman on 30/08/2014 08:22:51

[ashley needhamParticipant @ashleyneedham69188]

That looks like the stator from the Lucas alternator off my BSA !!

Ashley 140A…….

[Bob Abell 2Participant @bobabell2]

Think back a few months, chaps, where I mentioned a rudder at the bows of Brutus!

i was pooh poohed out of town!

Lo and behold…..ScaryKat has a rudder at the front of each sponson…..lol

I was only being silly at the time!

Bob

[ashley needhamParticipant @ashleyneedham69188]

Bob, they are so fickle, eh?? Ashley

[lnvisiblemanParticipant @lnvisibleman]

.

Edited By lnvisibleman on 30/08/2014 08:58:10

[Diede van AbsParticipant @diedevanabs87670]

Hi Mike,

Did I miss something? ScaryKat sounds disturbingly interesting, yet I cannot find plans nor design sketches… Come on, shoooow us the candy (pictures)!

I am very curious as to how the behaviour of the vessel will be with the bow rudders, my gut feel says it will dive and dig in its nose at high speed turns but we'll have to see once the first one has been built. It will certainly be feeling quite different as to what one is used to.

Another thing: If this is just for thrashing around at moderately high to high speeds these are the motors for you. However if you want to manoeuver in scale harbours or do a steering course as well, you might want to look for other more suitable motors. These motors get their power from very strong magnets and a few, very tightly wrapped coils which is great for top speeds and power at higher speeds, but they won't rev up until you are at 1/3rd of your stick travel. They are built with heli's and planes in mind, really. (I once had a pair of them, sold them because they did not rev slow enough to my liking)

Now, bring on the eye-candy and start building, I will follow this thread with great interest and curiosity!

[lnvisiblemanParticipant @lnvisibleman]

Good Morning Diede

From my perspective all that I want is MORE POWER !! I've got boats to manoov stear gently at low speeds.

I made a very special request of the great Mr T to tick off one of my bucket list items and he has very kindly obliged,

You will have to join me on the thumb twiddling bench until something shows up. Hopefully it will be like the busses, nothing much at the moment but loads coming soon.

Mike

[Diede van AbsParticipant @diedevanabs87670]

Hmmm, sound great except for the waiting part I am very curious what Paul will come up with!

[Dave MilbournParticipant @davemilbourn48782]

I'm curious to know what the advantage of bow-mounted rudders is and why few (if any) full-size boats seem to have them. I'm also amazed that you can get a brake-horsepower (720W) from a motor about half the length and the same diameter as a 540! My new model may be overpowered………
DM

[lnvisiblemanParticipant @lnvisibleman]

I haven't a clue Dave except that it may pull the bow round and avoid skipping round a corner.

I'm game for a laugh ant time so will be giving it a go when the plans arrive.

It is amazing how much power these brushless devils produce, it must be some sort of magic.

I will be running on 4s so they will give me a total of 1750 W. That's why it's called ScaryKat

Mike

[Bob Abell 2Participant @bobabell2]

Keeping the pot boiling…..They are not actually rudders……But something more hi-tech!

Bob

[lnvisiblemanParticipant @lnvisibleman]

OOOOOH ! The mystery deepens !!

[Paul TParticipant @pault84577]

I only mentioned that it will be called ScaryKat and we already have two pages of postings about it.

To add to the mystery …..think laterally about rudders.

To add to the fun…….would anyone like to comment on the feasibility of bow mounted rudders?

Paul

Edited By Paul T on 30/08/2014 15:37:24

[mike farrellParticipant @mikefarrell21522]

Hi Paul I am curious as to where the rudders go unless the are mounted under the bows? If so no probs with the servos if so

Maybe a section of the bows(lower section ) will be moveable allowing slow or fast turns to be made without causing the boat to flip over

Could a geared cog system with short belts between bows and High Torque Servo be a possible answer

Glad its your thought process not mineMichael

[Paul TParticipant @pault84577]

Hi Mike

You are almost right with your second assumption and it might help everyone if they thought more laterally about the term 'rudder'

The thought process is simple, its the application of the process that is more complex.

Paul

[lnvisiblemanParticipant @lnvisibleman]

Could we be thinking more in the line of bow plane that will counteract the natural tilt of the hull when turning ?

And do they necessarily have to be on the bow? Hows about towards the front of the deck ?

Mike

[ashley needhamParticipant @ashleyneedham69188]

Crafty, its a flexible hull isn`t it !! the hull curves to effect a turn !!! Clever…

The navy tried ahead mounted rudders in the 1880`s for battleships and TBD`s. The idea was more for battle damage resiliance and control when reversing. Was not adopted due to marginal results and additional complications.

Ashley

[lnvisiblemanParticipant @lnvisibleman]

Paul

All I said was that I am sitting impatiently waiting for developments.

It is hardly my fault that your fame has spread globally and everyone wants to know about it.

All I ask is first view of the plans so that I can get mine racing first. Please !!!

Mike

and a materials list would be handy so that I have the required stock of shuttering ply

Edited By lnvisibleman on 30/08/2014 17:25:08

[Paul TParticipant @pault84577]

First thoughts

[Bob Abell 2Participant @bobabell2]

Paul

With a wide boat like this, you wouldn`t need a rudder?

What about electronic tank steering?……..But still use a normal rudder stick?

In the bow view….What are those lines in the middle, low down?

Why a Kat?

Bob

[Paul TParticipant @pault84577]

Bob

Tank steering is to slow to respond around tight turns.

The part shown is a parabolic hydrofoil.

Why a Kat?…..you cant have a tilting monohull.

Paul

[Diede van AbsParticipant @diedevanabs87670]

Oh-My-God

That is going to be a mighty remarkable appearance on the water!!!

Can't wait for Mike to start building and racing it!!!

Edited By Diede van Abs on 30/08/2014 19:44:19

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