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Author Topic: Bigish Aquarama Special Build  (Read 12664 times)

ukmike

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Bigish Aquarama Special Build
« on: June 20, 2017, 06:40:41 PM »

Hi.

LOA 1.3 mtrs. x 380mm Beam.
Powered by 2 x 1KW. brushless motors.
Some photos of the work so far.
Mike.
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TomHugill

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Re: Bigish Aquarama Special Build
« Reply #1 on: June 20, 2017, 11:05:12 PM »

Been looking forward to this mike, following on!
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Martin [Admin]

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Re: Bigish Aquarama Special Build
« Reply #2 on: June 21, 2017, 11:59:50 AM »


Yeah, I say Bigish too!
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DaveRuss

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Re: Bigish Aquarama Special Build
« Reply #3 on: June 21, 2017, 12:42:58 PM »

I take it that this is a scratch build.If so,do you cut the parts yourself or is there somewhere you send the plans.Thanks
Also can you tell us what wood you are using etc.

Will be following closely.
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Amati tipo Riva Aquarama (in build)

ukmike

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Re: Bigish Aquarama Special Build
« Reply #4 on: June 21, 2017, 01:48:17 PM »

Building from plans and cutting the wood myself.
The frames should have been 5mm birch ply but when it arrived it was the Imperial equivalent which is a tad thicker, as is all of  the wood that I ordered.
The keel is 2 X 5mm laminated together from frames 7 to 13 and 4 laminations from 6 onward. Again all oversize due to the wood being Imperial.
Other woods include Mahogany, Lime and a little 4mm ( ish ) birch ply.
Glue will be mostly yellow aliphatic, maybe a little epoxy here and there.
The Mahogany planks for the hull sides and some of the decking will be 9mm X 3mm which I will cut myself, the hull bottom is 3 mm ply due to the full size having a white bottom.
As for varnish, ( eventually ), it will be LeTonkinois.
Mike.
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DaveRuss

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Re: Bigish Aquarama Special Build
« Reply #5 on: June 21, 2017, 09:26:37 PM »

Thanks Mike she sure is going to be a big one.I bet she will be quite heavy too.
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Amati tipo Riva Aquarama (in build)

TomHugill

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Re: Bigish Aquarama Special Build
« Reply #6 on: June 21, 2017, 10:06:51 PM »

Mines a similar size and isn't too heavy
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ukmike

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Re: Bigish Aquarama Special Build
« Reply #7 on: June 22, 2017, 01:19:24 PM »

Her are a couple of photos of my exposed shafts setuup.

The 2 miniature pillar blocks will take the prop thrust and the 2 alloy things are the flexi motor couplings.
Didn'y fancy the idea of using brass wheel collets on the outside of the hull as I want the shaft tubes to protrude as little as possible thu' the hull bottom.

Mike.
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me3

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Re: Bigish Aquarama Special Build
« Reply #8 on: June 22, 2017, 05:33:40 PM »

Looking good! Where did you get the plans from?
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ukmike

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Re: Bigish Aquarama Special Build
« Reply #9 on: June 22, 2017, 06:05:56 PM »

From Marc SpitÓls in France.
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ukmike

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Re: Bigish Aquarama Special Build
« Reply #10 on: June 29, 2017, 03:14:36 PM »

Finaly managed to straighten the keel by wetting with very hot water and W/Up liquid, clamped into aluminium angle with a small packing piece in the centre then drying with heat gun made for paint stripping. It has kept in shape for 3 days now and shows no sighns of bowing.
Have started to fit the frames now then I can turn upside down and fit the chine stringers which are 3 laminations of 3mm Lime.
Mike.
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ukmike

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Re: Bigish Aquarama Special Build
« Reply #11 on: July 14, 2017, 05:55:16 PM »

Progress so far, very slow going.

Here are some photos of my exposed propshafts set up. Nothing glued in yet, just setting the alignments.

Mike.

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Martin [Admin]

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Re: Bigish Aquarama Special Build
« Reply #12 on: July 14, 2017, 08:30:55 PM »

Images are very small, try resizing to 800 x 600   :-))
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ukmike

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Re: Bigish Aquarama Special Build
« Reply #13 on: July 31, 2017, 09:29:03 AM »

Progress so far.
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martno1fan

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Re: Bigish Aquarama Special Build
« Reply #14 on: August 01, 2017, 06:50:14 AM »

Great work mate,what motors are those they look a bit small.
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ukmike

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Re: Bigish Aquarama Special Build
« Reply #15 on: August 01, 2017, 10:25:35 PM »

It's not the motors are small but the couplings that are quite large.
They are not Modelling types.
Mike.
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martno1fan

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Re: Bigish Aquarama Special Build
« Reply #16 on: August 02, 2017, 06:01:47 AM »

What size are they and whats the shaft diam .
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ukmike

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Re: Bigish Aquarama Special Build
« Reply #17 on: August 02, 2017, 07:58:21 AM »


Here you go Mart.

3642 / 5mm shaft / 1100kv / 950 watts on 4 cells.
What do you reckon ? Am looking for about 7 kilos finished weight.


Mike.
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martno1fan

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Re: Bigish Aquarama Special Build
« Reply #18 on: August 02, 2017, 08:38:46 AM »

My worry is wether they will have the torque needed to last over a period of time in such a big heavy boat . I can only judge it on the type of hulls i use such as my large Apache.I know mine are faster and a faster design etc but size x weight ratio wise theyre similar. You might be fine and you can but try it i guess mate .Im one of these guys who thinks the more power the better lol.
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martno1fan

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Re: Bigish Aquarama Special Build
« Reply #19 on: August 02, 2017, 08:47:17 AM »

This one is on sale at the moment seems a good motor even on 3 s .This motor has lots of torque as its designed for fast boats,over kill ? . Might pick two up for myself at this price .
https://hobbyking.com/en_us/4362-1300kv-1994w-brushless-motor-suitable-for-hydropro-inception.html
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ukmike

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Re: Bigish Aquarama Special Build
« Reply #20 on: August 02, 2017, 02:08:58 PM »


Thanks for the info and advice Mart.

Seen those motors and a very good price at the moment.
I want to use only 4 cells and am not particularly concerned about long running times, my main interest is the building and finishing, not the sailing.
I take your point about the weight and have decided to build another hull with extra lightening. Birch plywood is very heavy so my aim is to remove as much of it as possible with sacrificing structural strength.
Will see how it goes !!


Mike.

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martno1fan

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Re: Bigish Aquarama Special Build
« Reply #21 on: August 02, 2017, 03:43:51 PM »

Thanks for the info and advice Mart.

Seen those motors and a very good price at the moment.
I want to use only 4 cells and am not particularly concerned about long running times, my main interest is the building and finishing, not the sailing.
I take your point about the weight and have decided to build another hull with extra lightening. Birch plywood is very heavy so my aim is to remove as much of it as possible with sacrificing structural strength.
Will see how it goes !!


Mike.

Ive been meaning to make a mould of one of these for years that would consist of main hull and a top structure that would allow people to glue on wood veneer if they wish , i just never seem to get the time to make the model to use as a plug  %) .Would certainly be lighter and more user friendly for rc use i think .
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chris1

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Re: Bigish Aquarama Special Build
« Reply #22 on: August 05, 2017, 06:34:01 AM »

Nice build and from what i see, very neat workmanship.  Is there a website with Marc Spitals plans? Thank you
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ukmike

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Re: Bigish Aquarama Special Build
« Reply #23 on: August 05, 2017, 06:53:35 AM »

Unfortunately no website for Marc.
The plans are from 1996 and I don't even know if he is still alive !!

Have abandoned the first build,( the one you see on here, ) and started a second one which will be much lighter and modified to accept brushless motors and exposed prop shafts.
Hope to drop about 2 kg. from the finished weight
Will post photos showing the differences as I go along, if that is of any interst.

Mike.
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SailorGreg

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Re: Bigish Aquarama Special Build
« Reply #24 on: August 05, 2017, 08:16:10 AM »

Will post photos showing the differences as I go along, if that is of any interst.

Mike.


Oh yes please. Most definitely of interest!  :-))


Greg
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