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Author Topic: Strongbow type tug  (Read 32300 times)

Offline Hankwilliams

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Re: Strongbow type tug
« Reply #165 on: March 24, 2020, 09:14:53 AM »
Yes Jurgen, this model is really a piece of art!

Offline Paddlemex

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Re: Strongbow type tug
« Reply #166 on: March 25, 2020, 03:17:46 AM »

Guess what I'll be doing for the next few days!!

What can I say Eddy? It's a difficult guess. Play with tiles and mortar?

Thanks Thomas. I am having fun.  :)

Jurgen

Offline Paddlemex

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Re: Strongbow type tug
« Reply #167 on: April 25, 2020, 02:08:29 AM »
Today the captain came aboard to overview the work. He wasn't pleased to see that nothing had been done in a month.

Offline derekwarner_decoy

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Re: Strongbow type tug
« Reply #168 on: April 25, 2020, 09:07:40 AM »
 :a102.....no wonder he couldn't see any progress  Captain Peg-leg doesn't have any eyes    :picknose...

I can just hear the Crew saying  :gathering  aye-aye Sir.....

Derek
« Last Edit: April 25, 2020, 09:18:25 AM by derekwarner_decoy »
Derek Warner

Honorary Secretary [Retired]
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

Offline Paddlemex

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Re: Strongbow type tug
« Reply #169 on: April 25, 2020, 11:03:17 AM »

The white lines are bushy eyebrows Derek. :sunglasses
I'm looking for an ultra micro paint brush. Maybe he'll get eyes after all.

Offline Paddlemex

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Re: Strongbow type tug
« Reply #170 on: May 05, 2020, 03:13:16 AM »

Been working on the davits and finished the life boat.

To make the conical part of the davits I used the normally annoying effect that small bar stock gets pushed away from the tool when you move away from the chuck. Here that effect was wanted and worked quite nice.
Then using a small file the spherical end was formed. On the second picture I already had started to file the front when I remembered to take the picture. Sorry for the finger, but the camara refused to focus on the small sphere unless something larger was in the area.
For the bending I squeezed the bar between the tool holder and a 2" metal piece and bent it by hand.
Then after some drilling and inserting small parte the davits look quite nice. The captain overlooks the installation with his eyes which I had to add after getting an observation from eagle-eye-Derek. :P :D
It's a shame all this beauty will disappear under a coat of black paint, but she shall be a work boat.

Jurgen

Offline Paddlemex

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Re: Strongbow type tug
« Reply #171 on: May 05, 2020, 03:26:54 AM »

Continued hanging the life boat.
First pic shows the captain inspecting the life boat and in the foreground the davits for the anchor crane.
The life boat didn't pass the test showing some serious leaks, but the work continued anyway.

I will probably redo the crossed protective fenders. The look somewhat too massive. But I may use this material to make the fenders on the sponson edges. It's shoelace BTW.

Jurgen


Offline derekwarner_decoy

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Re: Strongbow type tug
« Reply #172 on: May 05, 2020, 08:34:43 AM »
Nice work on the davits there Jurgen [images 39R & 55R]  :clap.......and it's good to see that the Captain has his eyes [back] and firmly inspecting the shipyard workers progress  :hammer

Shipwrights are usually pretty trusted worthy, but whatever you do, don't let the Painters & Dockers get too laxed or they think you employ them in a  :vacation Camp

Derek

[PS...agreed.......your brown shoe laces are just a tad too thick & wide  :whistle ]

Derek Warner

Honorary Secretary [Retired]
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

Offline Paddlemex

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Re: Strongbow type tug
« Reply #173 on: May 19, 2020, 04:07:37 AM »

I started the anchor winch and it is growing into a project of its own.

I started cutting a side piece of 5mm ply so I could bend the frame over it. That worked quite well.
The frame is soft soldered to the side pieces.
The re-enforcements for the shafts are styrene and glued to the sides. I was afraid that if I used brass and tried to solder them, the frame solder would fall off. After painting the styrene will not be noticed.

Jurgen

Offline kno3

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Re: Strongbow type tug
« Reply #174 on: May 19, 2020, 11:17:56 PM »
That's a nice winch.

Offline Paddlemex

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Re: Strongbow type tug
« Reply #175 on: May 21, 2020, 02:59:05 AM »

Thanks kno3.

Added some parts to the winch.
The brakes are functional, the thread is M1.

Jurgen

Offline Paddlemex

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Re: Strongbow type tug
« Reply #176 on: May 30, 2020, 04:41:09 AM »

Winch is almost done. The "pistons" move nicely when you turn the gear by hand.
Maybe I should think of adding a small motor under deck?

Jurgen

Offline derekwarner_decoy

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Re: Strongbow type tug
« Reply #177 on: May 30, 2020, 07:36:49 AM »
Very nice Jurgen.......just one point,....  :whistle

I trust you have installed Asbestos-free brake material in those drum bands

With respect to motorizing the winch.......just thinking a continuous rotation servo mounted below deck with the same eccentric offset as the winch drum eccentric connected by a link [of any extension] and a speed controller could provide the necessary winch drum axis rotation  [an exercise in parallel motion  :hammer]

Derek  :beer
« Last Edit: May 30, 2020, 09:02:00 PM by derekwarner_decoy »
Derek Warner

Honorary Secretary [Retired]
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

Offline Paddlemex

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Re: Strongbow type tug
« Reply #178 on: May 31, 2020, 03:02:22 AM »

Well, sort of Derek. You know, this is an old vessel so the material used is low(!)-asbestos brass on the drum bands.

and the boiler ignition engine  :a102 runs only on leaded gasoline.

Jurgen

Offline Paddlemex

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Re: Strongbow type tug
« Reply #179 on: June 05, 2020, 03:23:02 AM »

So I finally encouraged myself and drilled the deck and hull for the anchor chain passage which I had forgotten.
It went surprisingly well. I started with a 2mm drill and worked my way in 0.2mm steps up to 6mm. These small steps avoided tearing the wood which I was so concerned about.
The upper lip is a piece of 1mm copper wire wrapped around the brass pipe, soft soldered and a lot of filing/sanding. I can see it's not perfect, but the beating the lips have taken from the chain have left their marks.  ::)

And the winch is finished.
Derek: regarding the motorization I had similar ideas like you. One is the continuous motion servo or a small gearmotor. The advantage I see in the servo is that it has the ESC "preinstalled". The gearmotor needs a separate ESC but may be less noisy. We'll see.
I may extend the piston rods under the deck (the pistons are already drilled through) and install a second crankshaft under deck. I think I will need to extend both piston rods to be able to overcome the top and bottom dead centers.
Anyway, this is for "later".

Jurgen


 

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