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Author Topic: The old B's new ST Cervia build  (Read 4405 times)

Baldrick

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The old B's new ST Cervia build
« on: January 02, 2018, 05:06:13 PM »

As there is no sign of my next intended build kit on the horizon yet I am lining up for a build of the steam tug Cervia. I am going this time for a GRP as being confined to the house in the winter I cannot make sawdust in large quantities . So, I have lined up the hull shell together with a copy of the Vic Smeed plans and am thinking about the plan of campaign.
 First the rudder frame, have determined the shape this needs to be and as some areas are a bit slim plywood does not seem man enough, perhaps a brass /ply /brass sandwich or else mill it out of aluminium.  Need to think along this !

 


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Baldrick

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Re: The old B's new ST Cervia build
« Reply #1 on: February 21, 2018, 07:50:35 PM »

Started at last , making rudder frame out of 6mm brass bar.




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tugmad

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Re: The old B's new ST Cervia build
« Reply #2 on: February 21, 2018, 08:20:45 PM »

Very nice 👍👍
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ballastanksian

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Re: The old B's new ST Cervia build
« Reply #3 on: February 21, 2018, 10:52:09 PM »

It is nice to see a bit of model engineering  :-))
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BrianB6

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Re: The old B's new ST Cervia build
« Reply #4 on: February 22, 2018, 05:12:47 AM »

A lot better than my effort  :embarrassed:
Just a brass bar epoxied to my home made fibreglass hull
I did have a scale rudder but found a partly balanced one gave more control at slow speeds.
Even after 40 years I have not got round to finish painting it.
Not quite in it's bottom housing.

( someone should change the American spell checker to English. It is not fiberglass! )
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #5 on: February 22, 2018, 01:19:02 PM »

Thanks for the replies Guys, I wonder how this rudder is going to perform in practice ?  I assume that the cranked rudder shaft gives a purchase on the rudder resistance that a straight shaft would not.  Makes it a right B***** to model though.




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missyd

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Re: The old B's new ST Cervia build
« Reply #6 on: February 22, 2018, 03:11:11 PM »

Wonderful work with brass!!!!  :-))
I hope it will work as well as the partly balanced one ....
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #7 on: February 25, 2018, 01:28:41 PM »




  One thing I forgot to allow for was the Durante length of the propeller nose . I am going to attack this with the Dremel and slice off a few mm, it looks stupid as is.  Or perhaps take the cone off and just put a nut on




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derekwarner_decoy

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Re: The old B's new ST Cervia build
« Reply #8 on: February 25, 2018, 09:29:58 PM »

A technical superb outcome Balderick  :-))..............is the shaft M3?.....if so I could post a brass acorn nut over ok2 ........Derek
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #9 on: February 25, 2018, 10:05:17 PM »

A technical superb outcome Balderick  :-)) ..............is the shaft M3?.....if so I could post a brass acorn nut over ok2 ........Derek


  No it's M4, but thank you for your generous offer , also your comments.
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tugmad

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Re: The old B's new ST Cervia build
« Reply #10 on: February 26, 2018, 03:44:26 PM »

Cervia,s prop nut.  She didnít have a domed nut so you can cut it off and be correct.


r
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #11 on: February 26, 2018, 07:32:01 PM »

Cervia,s prop nut.  She didnít have a domed nut so you can cut it off and be correct.


  That's good news thanks,


r
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tugmad

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Re: The old B's new ST Cervia build
« Reply #12 on: February 26, 2018, 09:18:48 PM »

That picture was taken the last time that the old girl was slipped , over 30 years ago.she is moored in the inner harbour at Ramsgate where the picture was taken.
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #13 on: March 13, 2018, 04:57:54 PM »

OK oversize acorn duly modified, rudder completed, time to start dressing the hull ready for a primer undercoat




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Baldrick

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Re: The old B's new ST Cervia build
« Reply #14 on: April 13, 2018, 07:47:13 PM »

Seem to have forgotten to post on this for a while, have rubbed down the hull, installed the framework and cut the deck out ready to glue down. Did not realise till this point just how banana shaped the tug hull is , have to resort to some serious clamping to get the ply to take the correct shape









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ballastanksian

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Re: The old B's new ST Cervia build
« Reply #15 on: May 07, 2018, 08:24:57 PM »


She's looking good Baldrick! I like your build board. Are the stations a scale standard or convenient for your projects in particular?



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Baldrick

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Re: The old B's new ST Cervia build
« Reply #16 on: June 03, 2018, 03:01:05 PM »

She's looking good Baldrick! I like your build board. Are the stations a scale standard or convenient for your projects in particular?


  Sorry late reply. The board is for another project which is very much on the back burner at present.
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #17 on: June 03, 2018, 03:06:52 PM »




  Started work on Cervia again, making the anchor winch . Just forked out 5p for the cog wheel. Hope Madj' is not miffed by the hole, or the metal blacking dip coming up shortly.


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derekwarner_decoy

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Re: The old B's new ST Cervia build
« Reply #18 on: June 03, 2018, 03:42:41 PM »

Baldrick.....I won't tell of you indiscretion......if you keep mine under your hat  %)

I needed to drill & tap M2 tapping's in my de-oiler top so needed a ''doubler plate" disk ......

1. say 20mm diameter x 2 mm thick
2. brass/bronze rust free
3. so easy to soft solder
2. easy to drill & tap with M2 tapping's & to drill with a 1/4" bore

Hey presto.....it cost me $2.00 from my pocket change......you can just still see the vertical serration lines on the coins OD.....great value  :-X
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #19 on: June 10, 2018, 07:00:24 PM »

Not having had the heavies round from HM Mafia to duff me over I have been progressing the hull to the point where I can start on the fiddly stuff.


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TugCowboy

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Re: The old B's new ST Cervia build
« Reply #20 on: June 10, 2018, 08:53:52 PM »

Looking excellent, is the rudder serviceable? I get paranoid closing things in since I had a failure a few years ago and it required an all new deck after. Although looking at your brass work I doubt that is going to be an issue
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #21 on: June 10, 2018, 09:47:15 PM »

yes I have given the rudder a few heavy knocks accidentally while handling the hull , sufficient to turn the servo 90deg  and nothing has deranged . In fact the offset rudder pivot arrangement is very sturdy , probably due to the fact that you have four fulcrum points. Not sure how styrene would stand up though if as clumsy as me.
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #22 on: June 15, 2018, 11:20:29 AM »




  Scratchbuilt windlass, probably needs a few micro dollops of thick black grease because the original was never all black and shiny  Had to dig the old Unimat 3 out of the shed and dust off the rust dirt and cobwebs. Must give it a good once over as I will be needing it for a few more bits soon. Great little tools, unstoppable providing you do not cook the small size motor.


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Footski

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Re: The old B's new ST Cervia build
« Reply #23 on: June 15, 2018, 12:14:38 PM »

A beautiful job and a great looking model.
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Baldrick

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Re: The old B's new ST Cervia build
« Reply #24 on: July 06, 2018, 09:38:45 PM »

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