BRUTUS MK 11

[Bob Abell 2Participant @bobabell2]

Decided to have another go at Paul Thomason`s famous Brutus model

Brutus 1 was designed by Paul in 2014 and was a very interesting build

The design was outrageous at the time, being an Axe Head type of ship

The sharp Axe edged bows allowed the ship to cut through the waves, rather than climb over the waves

 

Made a start by cutting out the formers, using Hardboard, which feels suitable for the task, having no other materials in stock

Will have to venture out into the wild world shortly, in search of wood supplies

Bob

Edited By Bob Abell on 06/06/2020 09:52:39

[Bob Abell 2Participant @bobabell2]

Axe Head ship of the future

[ashley needhamParticipant @ashleyneedham69188]

In what direction will the Brutus 2 be different to version 1 Bob??

With experimental or non-conformist type vessels there are always things I would do differently the second time.

Propulsion perhaps???

Ashley

[Bob Abell 2Participant @bobabell2]

Ashley

Paul redesigned Brutus about two years ago. And it appeared in The ModelBoats Magazine

It is very simolar to the original, but he added weapon features, torpedos and Chain guns etc and more super structure

I shall fit Brushless motors for starters and whatever comes to mind, any suggestions?

Bob

[Paul TParticipant @pault84577]

Hello Captain Bob

Here is the final version of the original Brutus

The hull has the potential for quite high speeds and would suit water jet propulsion

Looking forward to seeing your new take on this design.

Paul

[Bob Abell 2Participant @bobabell2]

Hello Paul

Having finished the MTB model and having got back some of my old enthusiasm and fixed the motor drives on the other models etc…….I was scuppered with nothing to do!

I thought about a kit, for an easy life, but didn`t fancy it really, then I found the ModelBoats Mag with your latest Brutus build. Having a few pieces of hardboard hanging about, my fate was sealed!

So I got back into the old routine

So here we go, boys

Bob

Edited By Bob Abell on 06/06/2020 11:19:21

[Paul TParticipant @pault84577]

Bob

After all of the trouble with the rudders I would advise changing the stern and give the transom some extra depth.

Paul

[CookieParticipant @cookie15923]

Great news Bob , Keen to watch your progress with the build .

Regards Dave

[Bob Abell 2Participant @bobabell2]

Hello Dave

Where have you been lately?

Welcome to the Forum anyway, Cookie

Message for Paul…….

How`s this for an idea?………With having two motors, why have a rudder anyway?

Could use Tank Steering?

Bob

[Paul TParticipant @pault84577]

Hello Captain Bob

Tank steering is a good idea

Paul

[Bob Abell 2Participant @bobabell2]

Hi Paul, I also think that a rudder up front would work, the gun above could pivot on the same axis?

Bob

[Bob Abell 2Participant @bobabell2]

Tracing the keel onto the plywood is a bit tricky

The keel is shown in two pieces and on different sheets

The solution is to refer to the drawing border, to line up the two pieces

See photo….I`ve cut the border off the LH sheet

ie…. The drawing borders need to be parallel

Bob

[Paul TParticipant @pault84577]

Captain Bob

Putting the rudder in a forward location does have some design merit as it can help with manoeuvrability however the downside is that rudders are most effective when positioned behind the propellers.

Paul

[Ray Wood 3Participant @raywood3]

Hi All,

A rudder anywhere near the sharp end will act as a brake, the flatter hull at the stern is much easier for a rudder to push sideways ??

Regards Ray

[Bob Abell 2Participant @bobabell2]

Here's an interesting thought, chaps

Imagine one rudder between twin props, with the rudder blade being extra long, so that a single prop could act on the blade

What would be the effect?

One prop would steer the craft and the other prop would drive the craft forward

Just a thought

Bob

[Ray Wood 3Participant @raywood3]

Hi Bob,

How about the other way round ? 1 prop & 2 rudders 😎

My new toy, I just sit looking at it !! Scary or what 😯

Regards Ray

[Bob Abell 2Participant @bobabell2]

Hi Ray………You`ve taken the plunge into the inknown there, old chap!

It will still work, but with reservations

Have you tried it out yet?

It is the reverse of what I hinted about, especially should the rudders have extensions on the inside to be more effective with the prop

Keep us informed

Bob

[Bob Abell 2Participant @bobabell2]

What I was saying about the borders being parallel, hasn`t worked out?

See below……..

The two pieces are easy to match up anyway…….No harm done

Bob

[Bob Abell 2Participant @bobabell2]

Having no suitable plywood, the keel is being made up from, two outer layers of 1/8 " hardboard and one central core of 1/8" plywood off cuts…..ie a composite material…….Very stiff and strong…….Hopefully

This is what makes the build at the moment more interesting……..Scratching about for suitable materials!

Bob

[Chris FellowsParticipant @chrisfellows72943]

Ashley will be happy at the use of hardboard!

Chris

Edited By Chris Fellows on 07/06/2020 13:11:17

[Bob Abell 2Participant @bobabell2]

Thanks Chris

Hardboard can be a life saver at times…..Especially….This time!

Bob

[ashley needhamParticipant @ashleyneedham69188]

Nothing wrong with superior man made board, as bob is finding out.

Bob. A fair few of my boats have twin props whereby the rudder is extra long between them so at full throw it impinges on propwash, and this works very well.

The Terrapin has incredible manoeuvrability despite the squareness of the hull with this arrangement. A couple of boats have offset rudders just out of the propwash and they work ok as well.

We will find out about front mounted rudders on the Crusader…

Ashley

[Bob Abell 2Participant @bobabell2]

The very delicate 48 inch keel under construction

Note the three clamping points, essential while planning and sanding

Have also used 6BA nuts and bolts for rigidity

Bob

[Bob Abell 2Participant @bobabell2]

Just a trial assembly of the hull structure

These are early days yet and with plenty to think about at the moment

Some of the formers are made of hardboard from a bedroom chest of drawers

Note…… Some of the bases are made from the drawer side walls!

Bob

[Bob Abell 2Participant @bobabell2]

Another trial assembly to see how the spars line up

We are getting there……..Slowly

But surely……Bob

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