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Author Topic: SS Ohio tanker build, Pedestal convoy.  (Read 137600 times)

unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #350 on: October 21, 2015, 06:27:20 PM »

Five years in build and its just getting a coat of primer on the superstructure...is this slow?

 %)

Chichester Canal this last weekend, and as Adam at Chichester commented LAST December..." haven't you finished that yet?" So I gave her a coat of grey primer on all the exposed woodwork, etch primer in the stainless pyro trays, and a pair of magnetic hatches over the pumps. So, many greys at present.

Someone suggested it would look good when I get the helicopter fitted....spud head :}
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #351 on: October 21, 2015, 06:28:31 PM »

Must dig the plans out and get some masts built..
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #352 on: October 21, 2015, 06:30:22 PM »

Oh, and with only seven runs under her belt, the Supertec 1/4 scale servo coughed its last on Sunday...stripped gear. Thats three of those stripped on three models this year..it pays to buy cheap!
Will slap a Futaba one in there instead.
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Z750Jay

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #353 on: October 21, 2015, 06:41:44 PM »

Lol, dodgy supplier?
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Yarpie

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #354 on: October 21, 2015, 07:07:16 PM »

Great to see some progress UBN. :-))

i keep looking-in on this baby.

Sandy.
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #355 on: November 06, 2015, 05:47:48 PM »

Masts and general sticky up bits next.

I love brass almost as much as I hate photographing it so here we go.

I have spent the last two weeks on the fore and main mast, handling davits, king posts and derricks (looked that lot up, hope I got the correct terminology, I am only building it..dont need to know what I am building!!).
Ohio has two masts, six assorted king post/derrick combos and eight davits not assigned to lifeboat launching ( handling hoses etc, I believe ), and i set out to build all of them.
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bat44

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #356 on: November 06, 2015, 05:53:03 PM »

Pics please
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #357 on: November 06, 2015, 05:55:03 PM »

Pics as requested :}

King posts fore deck.

Built out of 8mm dia brass tube from scrap propshaft material. An M6 brass stud is soldered into the base to allow them to be removed from the model for transport. I have re-drilled old coupling inserts and tapped them M6. These will be drilled into the deck and epoxied in place. I have used RB Models brass bits throughout the mast building. Many combinations are available. From Deans Marine.. a bit expensive, but they saved many hours of tedious work, so well worth the investment. I have also tapped into my supply of brass nuts and bolts, using M3 and 12BA, plus the previously mentioned M6 bolts. Finally some mast fittings scrounged off of an etch brass set from a Billing Boats Colin Archer.
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #358 on: November 06, 2015, 05:58:29 PM »

Rear Derricks.

These I have shortened, as if you build them to match the builders drawings, they interfere with the arcs of fire of the aft Bofors and oerlikon guns. contemporary photos show them level with the tops of the gun tubs..so these are shortened.
Same build as the fore ones. Both versions have the hole in the top capped off with 6mm dia beech dowel, soaked in cyano and filed flat.
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #359 on: November 06, 2015, 06:00:51 PM »

The chain seemed a bit odd, but features on the photos of Ohio undergoing builders trials..its also fire proof, could be useful!
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #360 on: November 06, 2015, 06:06:32 PM »

the masts were about 10mm in diameter and have the 8mm ex-propshafts as bases, with the M6 bolts once again soldered in. This then has K&S metals outer tubes soldered to them. Topped off with a large brass collet that I had knocking about, plus a large copper washer on top of that. Both masts feature a long tank vent that reaches over 3/4 way up the mast. These were made from 1/8" dia soft brass tube, pinned with small 12BA bolts into the mast then soldered in situ. The upper mast being 1/4" dia K&S tube.
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #361 on: November 06, 2015, 06:14:29 PM »

the fore mast also features two long derrick booms. to get the profile of these right, I have sleeved them with some suitable carbon rod, cyano glued in place. More RB models brass nick nacs were used to secure these to the mast. This time with M3 brass bolts soldered in place. At the back of this mast is a long stamped brass ladder, previously made by Robbe. This was soldered into the slots on strategically fitted 4BA brass, slotted bolts soldered into the mast. I need one more of these for the aft mast..problem is they are no longer made. Any ideas?
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #362 on: November 06, 2015, 06:17:02 PM »

The lamp near the top of the mast features a bit of shaped copper which I believe I salvaged from an old mains plug, bent to shape and soldered in place. The 'lamp' is a Billing Boats Bollard, drilled and soldered in place!
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #363 on: November 06, 2015, 06:21:37 PM »

Davits.

these were bent to shape using an Expo tube Bender. Guaranteeing me the same shape each time..no more jam jars for me! The bases started life about thirty years ago as parts of British built servos which I acquired loads off many years ago. These were soldered into 5/32" brass tubes cut to length. Once trimmed, they were stuck in a pillar drill and drilled open to 2.5mm. The outer tube preventing the little servo bits from splitting.
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #364 on: November 06, 2015, 06:25:02 PM »

So this is the result of a couple of weeks of soldering.. only got burned twice..once when the old gas torch decided to let gas out of the side as well as the tip...25 later I had a replacement..and the second time when I forgot that 'HOT' comes out the end of that blue flame, while trying to get the best angle to feed solder into the job..not bad for me :-))
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #365 on: November 06, 2015, 06:32:41 PM »

I forgot the big tank vents midships. These are cowl vents on top of the king posts and were a bit of a feature. I was trying to figure out how to produce these. Plastic fittings were out of the question, as they could get singed during a display. White metal seemed the best option, however, possibly still a bit risky.
Then I came across some REALLY old fittings, including a pair of brass cowl vents.. once paint strippered, they could be soldered in place as seen in the photos.

So that's it up till now. there will be some bits to solder on to the davits etc before they are good and finished, meanwhile, now i have to start considering the maze of deck piping and what to make that out of!
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Brian60

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #366 on: November 06, 2015, 07:15:36 PM »

The ladders are available from Cornwall Model Boats in 75mm lengths, I saw them when searching for 'brass ladders' although at 1/72nd of my build I thought the rungs were too thick as they were stamped from sheet not etched. They do have plastic ones in the same length which for my build looked better.

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #367 on: November 07, 2015, 10:38:51 PM »

Great brass work and a great project all together :-))
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #368 on: November 14, 2015, 03:03:06 PM »

Great brass work and a great project all together :-))

Many thanks for that...I have, however found a quicker way to get my tanker. It is a little too late now though %)
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #369 on: November 17, 2015, 05:38:17 PM »

Masts went up Sunday. Two at a time with Devcon Plastic Welder. The knurled nature of the modified boat couplings meant I had to get them fitted in the correct orientation from the off. So the masts were tightened up then lined up correctly, fore and aft. glued both down the hole and around the knurled fitting, and lightly hammered in! Plastic Welder is a fairly fast setting adhesive, hence only two masts at a time being fitted. These then had to be lined up fore and aft and across the beams of the boat visually, with the aid of a Tri-Square and the window frames inside the clubhouse. This worked for the King Posts which are vertical to the ships waterline, not so much for the main and fore masts, which both sweep back a few degrees. This had to be done by eye using the Tri-Square again, but allowing a small gap to appear at the top of the Tri-square, of the same size, twice...
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #370 on: November 17, 2015, 05:40:47 PM »

The little donut of glue that splurged out was removed once dry, using a 1/4" chisel, in a downwards motion, one side of the coupling at a time, until it let go. Makes a very good paint stripper does Plastic Welder :-))
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #371 on: November 17, 2015, 05:44:26 PM »

Interestingly, the little davits, that only needed a 2mm pilot hole, did not take well to the Plastic Welder, coming loose with little encouragement...so out with the Z-Poxy, that stuck them!
It now looks a bit 'busier' as a model than it did before.
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #372 on: November 17, 2015, 05:46:44 PM »

And posed alongside our club Tanker (65", just a tiddler!)...
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unbuiltnautilus

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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #373 on: November 17, 2015, 05:49:50 PM »

Deck plumbing or guns next...Question; can I bend a decent right angle in a length of 3mm dia solid aluminium without it snapping on me?
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Re: SS Ohio tanker build, Pedestal convoy.
« Reply #374 on: November 18, 2015, 10:27:17 AM »

Deck plumbing or guns next...Question; can I bend a decent right angle in a length of 3mm dia solid aluminium without it snapping on me?

Try annealing the aluminium before bending, rub it with soap first then heat until the soap turns brown and it should be soft enough to bend easily. It will work harden when bent and some aluminium alloys will age harden when left after bending.

Jim
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