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Author Topic: David's Amati Riva Aquarama Build - With some mods...  (Read 11806 times)

DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #250 on: November 09, 2020, 06:00:53 pm »

And one picture of the 'under development' skis...





 :-))

DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #251 on: November 10, 2020, 03:55:47 pm »

Afternoon All


Starting to look like a boat:








Have been getting the waterline worked out as per the plans:





Mainly so that I can attach the rubbing strips / fenders:








Best regards
David.

ChrisF

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #252 on: November 10, 2020, 09:41:02 pm »

Reasonably happy, you should be very happy!

When not in use could the hole be fitted with a short length of tube capped with a larger diameter disc sitting  flush on the deck with maybe a ring for lifting out or a rectangular cap with ends rising to a point i.e. a triangle on end but with a bit of Riva flair designed in? Maybe curve the front leg of the triangle or just have that leg? Hope this makes some sense!


Or a flat triangular cap with a vertical ring on the top! The list goes on!

Chris
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DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #253 on: November 11, 2020, 10:15:58 am »

Morning Chris


Yes, I think you're right, effectively a blanking plate, a slightly domed chrome cap held in place by same pin that holds the ski pole in place. Then use one or the other depending on the outing.  That's how Riva deal with other 'caps'.


Have added the other rubbing strip / fender this morning.  Then an overall rub down and tidy, so that I can get the thinned epoxy coat on to seal everything so far.


Best regards
David.

DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #254 on: November 13, 2020, 11:21:40 am »

Morning All


Big day today, and its only just gone 1100...


This was the Aquarama at 0930:





Rubbed down, then a de dust with some alcohol, and this was the boat at 1030:








After a thinned coat of Z-Poxy resin to seal.  I've taken out the rear slipway / deck now to resin underneath it, now letting it all dry.


 :-))


Regards to all
David.

ChrisF

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #255 on: November 13, 2020, 03:34:21 pm »

Looking great David.

Chris
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DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #256 on: November 19, 2020, 10:15:09 am »

Morning All


Well, first coat of varnish went on a couple of days ago, then I realised why Mike built a jig to be able to rotate the hull...


So, sunglasses on please...  Here's the dangerous reflections from the first coat...   ok2





And here's the construction of a stand under way, I use these aluminium extrusions for some other work, so had some spare to hand:





It's great for building 'one offs', joints use special connectors that make a rock solid structure.  Plan is to construct the outer frame, then an inner cradle that will clamp on the boats keel (from the inside) and allow rotation like a rotisserie, then clamped at any angle.














Should have it ready later today or tomorrow and will post the outcome...


Regards to all
DAvid.

DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #257 on: November 20, 2020, 05:26:37 pm »

Afternoon All


The Aquarama Rotisserie is up and running:





There are two foam pads (at the top in the pic above) that clamp around the keel where its exposed internally, with a 6mm pin pushed through to ensure it doesn't slip... Already had big holes in the keel so no additional drilling of the boat needed.


And here it is with the boat attached:





And rotated 90į:





And another 90į:





And one from the bow:





I've put some friction material on the two points of rotation, so loosen off the nuts to rotate the boat, tighten to clamp in any position.  Aim is to allow varnishing / light sanding of any surface, good access and keep it in place while curing while avoiding contact of any surface with anything else...


It just happens that 100cm lengths of the extrusion work well for this build.  It would be quite straightforward to extend for a larger hull.  Maybe the 1/7th Aquarama...


A couple of coats of varnish, then install shafts and rudder tubes is my current plan.


Best regards to all.
David.

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #258 on: November 20, 2020, 06:19:45 pm »

Impressed David  8) 

DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #259 on: November 20, 2020, 10:12:46 pm »

Evening Andy


Thanks for that. Looking forward to seeing how it works out for varnishing.


Any plans to restart your aquarama build any time soon..?


Best regards
David.



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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #260 on: November 20, 2020, 10:49:17 pm »

No time soon David but I am following your work  :-))  The tug is my whole focus just now through to Spring when I hope to fire up the Shannon as soon as paint spraying weather arrives. Keep up the great work I expect you will finish before me  :-)

Mark T

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #261 on: November 21, 2020, 09:53:24 am »

Wow thats dedication that is David!  Thats a great jig you have made  O0

DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #262 on: November 21, 2020, 02:42:53 pm »

Well thanks Mark. Its down to the high standards that I see on this forum that make me want to do the very best that I can.  :-))

Mark T

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #263 on: November 21, 2020, 03:27:54 pm »

Same here David there's nothing like pushing each other forward  :-))

DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #264 on: November 23, 2020, 11:02:32 am »

Morning All


Did manage some time on Saturday to get first coat of varnish on, I'm pleased with the rig, it allowed a full coat to be applied in one session.





This shows the forward grip on the keel:





And the rear, with the 'insurance' pin... :





First coat on the forward deck:





For better or for worse, I'm using 10% thinned 'International Original' polyurethane varnish. On my test pieces I found it quite straightforward to use and quite tolerant to temperature / humidity. And importantly, high gloss with a warm amber tint that I like.







First coat is fully cured this morning, so will be putting another coat on today.


Best regards to all.
David.

ChrisF

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #265 on: November 23, 2020, 11:18:50 pm »

Will look fantastic once finished. I use International as well, but the Schooner tung oil which I describe as giving a light honey colour that I like as well.

And love the jig.

Chris
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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #266 on: November 24, 2020, 03:36:20 am »


Kudos on the varnish job.
Kudos on the rotating rig!   :o
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DJW

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #267 on: November 24, 2020, 12:47:47 pm »

Afternoon All


Thanks for the comments Martyn / Chris.  :-))


I've got a couple of coats of varnish on, its dry, but I want to give it another 24 hours to cure before sanding it back.  So started to look at the shafts and specifically the mounting and securing of the P brackets, still dry fit at the moment:











I'm not to happy with the ply that Amati have used on the deck, I'll upload a pic on the next run.  The mahogany is just too thin, the middle lighter core gets exposed to easily, and this has happened in a couple of areas near the stern.  If I get around to the 1/7 build I think best approach would be to use a ply skin, then plank it.  Or as some other forum folks have done, prepare planked panels.  I think to try to do that to this build now would be too destructive...


Regards to all.
David.

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #268 on: Today at 05:00:57 pm »

Afternoon All


Here's the issue I'm having with the thin ply layer...





I'm getting further into the varnishing than anticipated.  I'd thought a couple of coats, then stop and do some more fitting out, then finish the varnishing.


But to get the finish I'm trying for I'm going with thinner coats that are wet sanded, so it's taking longer to build up.  I'm finding inclusions (dust, or whatever they are...) are a problem.  This is after filtering the varnish and thinners, cleaning brush again before use, wiping down hull with a tack rag, and so on...  The inclusions disappear with wet 3000 grit, so I'm thinking to do just that, then use some Farcela G10 cutting compound, then carnauba wax to get the gloss back...  I'll create a test piece and post result.  So here's the hull after cutting back with wet 400 grit:





Then wet 1000 grit, I'm using quite firm foam as a block, so some low points are being exposed:





And then with another thin coat applied:





So I'm thinking to build up a couple of more coats like this, so I can cut back to smooth out the low / high points, then just carry on with the test piece to check the result with G10 / wax, and get on with fitting out the hull.


Best regards to all.
David.

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Re: David's Amati Riva Aquarama Build - With some mods...
« Reply #269 on: Today at 06:05:46 pm »

Thatís real dedication for the perfect finish David and I think itís looking amazing  O0
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