Brutus

[Tony HadleyParticipant @tonyhadley]

Bob,

I bought some, on Ian Gardners recommendation, as a first covering for the card plating on Guardsman. It is also being used on the balsa cabins etc. Applied it before painting, everything Ashley and Colin say above is correct. A superb product which I will be using a lot more.

Tony

[Bob Abell 2Participant @bobabell2]

Thanks a lot boys………………………. Ashley, Colin, Dave and your good self Tony

It must be good

Bob

[Ian GardnerParticipant @iangardner62867]

I have never used Eze Kote. I found Poly-C -an alternative product which was bit cheaper at the time and used it in conjunction with nylon tights. I found it dried quickly, built up a good finish over several coats which can be applied rapidly and takes a paint finish well. It is an acrylic finish which cleans up with water and is very low odour. It also goes a long way.

**LINK**

[Bob Abell 2Participant @bobabell2]

Thank you Ian

It looks very similar to Eze Kote

Latest WIP pictures for the Drawing Office

The last big construction job is nearly finished…….Still got the windscreen area to sort out yet

We can expect to see a few eyebrows being raised on launch day!

The rear curved section was a struggle, with no means of using clamps!

This is where I`d like to see an air vent, Paul?

Bob

[Bob Abell 2Participant @bobabell2]

I wouldn`t be surprised if EzeKote is only PVA watered down?

Is this possible?

I don`t really fancy soaking my model in water, it could easily distort

Is this possible?

Just thinking out loud

Bob

[Colin BishopModerator @colinbishop34627]

No Bob it is an acrylic water based resin suitable for laminating as well as sealing. It is sold as an alternative to Epoxy resin and as a sanding sealer.

It won't distort your model.

Colin

[Bob Abell 2Participant @bobabell2]

Thank you, Colin

Much obliged, I suppose it would be wise to do small areas, to avoid the risk of distortion?

Will let you know

Bob

[Colin BishopModerator @colinbishop34627]

Don't believe me do you?!

Colin

[ashley needhamParticipant @ashleyneedham69188]

Bob. Dont be a ninny. Slap it on, there will be no distortion. Probly do more damage by only doing small areas at a time in any event.

Vents a bit low for me, also need an inlet and outlet I would say on the cabin. A couple of low mushroom vents perhaps to stop water flooding in as you plough through all those waves like…..er….the big ploughy thing that it is.

Alternatively use a smaller slot vent somewhere and a computer fan to provide a bit of suck and blow?? And a nice bank of turbine exhausts to exit the air from !! 

Ashley

Edited By ashley needham on 10/02/2014 19:55:29

Edited By ashley needham on 10/02/2014 20:00:52

[Paul TParticipant @pault84577]

Hello Rear Admiral Bob

The rear of the cabin looks exactly as planned and I am very pleased with how it looks. The low profile windscreen echoes the basis of the original inspiration for the whole design.

Paul

[Bob Abell 2Participant @bobabell2]

Thanks Ashley

OK…….I`ll slap it on then!

Paul is Adam Ant about where and what the vents will look like

I really must follow his instructions to the letter, to keep the model a Thorough bred!

Paul has gone to enormous trouble, designing the Brushless motors layout and cooling fans, even the internal vent ducting, I couldn`t possibly make any changes

The model looks very special and building it, has provided me with enormous pleasure…..and is keeping me young!

I have to confess though, quite often, I get up at ungodly hours, like 5.00 am and start work…….Quietly of course!

Sometimes I drop something!………Then there`s hell to pay later!

Rear Admiral Bob……..Note my recent promotion?

[ashley needhamParticipant @ashleyneedham69188]

Bob. Of course, only joking. Paul is ignoring my ridiculous proposals anyway, I can tell

Cooling fans?????

Ashley

[Bob Abell 2Participant @bobabell2]

Ashley

Looking at what B&Q have on their shelves for sanding sealer etc…..They have a vast array!

I'm thinking they would have the right stuff and it's very local to me…..So is Halfords for the spray paint

EzeKote would cost me £38 via mail order and involves a lot of messing about on the net!

No contest

Will give it a try today

All we need now is to settle on the colour scheme

Paul….You say black and grey……But the window is black,,,,Do you mean….Dark grey and light grey?

What about underneath?……White?

Bob

[LARRY WHETTONParticipant @larrywhetton68737]

Good morning Bob,

Brutus looking good, but not only a timber muncher getting a bit of money pit,,,.…

cheers Larry…

[Colin BishopModerator @colinbishop34627]

You don't need to buy Eze-Kote from Australia Bob! You can get it for £16 or so delivered on several websites.

Colin

[Bob Abell 2Participant @bobabell2]

Thank you, larry

I don`t mind spending the odd quid on an interesting hobby…….We can`t take it with us!

You look after yourself, Larry and keep popping in with your hints and tips

Colin

Thank you for your helpful hints and I do appreciate your advice, but we are only talking grain filler for a model boat

And I do like an easy life

I went on the recommended website for some EzeKote this morning, but didn`t fancy giving my Visa info to another third party

We`ll be OK

Bob

[Tony HadleyParticipant @tonyhadley]

Bought my Eze-kote from W.Hobby (London), not always the cheapest but a supplier who has been around many years.

[LARRY WHETTONParticipant @larrywhetton68737]

Bob ,

I use a tub of tile and grout from local diy, on plank on frame for fine tuning , and hase it says on the tin water proof when dry sands easy and a good grain filler try a bit on balsa, also when i built JENNY covered with a nylon stocking coated with pva glue , smoothed over t/g , sand with graded sand paper couple coats off rattle can under coat , wet dry , between coats . then finish coat gloss , see pics,,….cheers Larry.

[Bob Abell 2Participant @bobabell2]

Thank you, Tony and Larry

Just as I predicted……..Anything that can fill a crack………..Is fit for purpose!

We`ll be off shortly, when this blinkin` rain stops!

Noah

[Paul TParticipant @pault84577]

Dear All

As you are all aware Bob has decided to go brushless which means a pair of ESCs that get very hot and need to be air cooled. The following image is of a pair of cross sections showing the position of motors, escs, additional cooling fans and most importantly how the cooling air flows through the model.

 

 

Air comes in through the hidden recess at the top of the windscreen and is pushed through the model and over the ESCs by twin 80mm cooling fans positioned at F4 the warm air then blows out of the model through a slot vent in the rear of the cabin.

The interior of the cabin has been modified to create two plenums, one for the intake and a smaller one for the exhaust.

The ESCs have been shown fitted on a shelf, this location allows the ESCs to be positioned within the airflow and so maximise the cooling.

As the brushless motors are quite small I have been able to reposition them closer to the bottom of the model and with an associated slight change in propshaft angle have been able to achieve a direct drive.

Paul

 

Edited By Paul T on 11/02/2014 13:41:51

[Bob Abell 2Participant @bobabell2]

Hello Paul

It would have been better, if you had split your drawing and put the cross section above the side elevation, for a larger image

I`ve ordered the two fan units, as we discussed. Are you aware that the ESC`s each have a mini fan built in?

I don`t understand your idea of a hidden air vent in the window area. The windows will be dummies and are simply glued black plastic.

How about a couple of labyrinth vents in the roof?

Cabin now finished. Working on the Fore deck………Gluing a set into the "flat top to curved area"

Bob

[Paul TParticipant @pault84577]

Bob

Yes I know that the ESCs have mini fans I got onto the manufacturer to find out how much air and heat they move.

The air intake in the cabin roof / window is exactly as drawing that I sent to you. Even though the windows are dummies they are now recessed by 5mm which creates a hidden gap across the top of the windscreen. This gap has sufficient area to allow for the correct quantity of air to enter the model.

Paul

Edited By Paul T on 11/02/2014 15:33:12

[Bob Abell 2Participant @bobabell2]

Paul

We have our little ups and downs, don`t we?

Here is the cabin…….If I cut where you are telling me, the window will distort!

Unless I`m misunderstanding you?

Let`s have a roof vent?

Bob

[Paul TParticipant @pault84577]

Bob

I see what you mean about distortion to the window but it is very important that we don't use those horrible scoop vents as nothing looks more like an afterthought than those things.

Do you think that a supporting frame could go behind the wraparound windscreen to prevent the distortion?

Paul

[Bob Abell 2Participant @bobabell2]

Paul

Don`t want to touch the window at all…..It`s highly stressed at the moment

A couple of pix…….

Bob

The rear vent opening……..Will be very nice with a plastic grating or similar

Something like this….or half moon shaped, to match the front?

Anything but a poxy window slot!….lol

[Author]

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