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Working Bridge and Boat Diorama

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  • Member since
    January, 2018
Working Bridge and Boat Diorama
Posted by PeterPan on Tuesday, January 30, 2018 3:52 PM

As mentioned in my introduction this diorama is still in progress. I came late to this fine forum and have many photographs to post (in piecemeal) until they catch up to where I am at.

The Ballina Naval & maritime Museum acquired an antiquated console for the nearby Wardell Lift-Span Bridge (NSW, Australia). The goal is to have the console operate a model bridge. Though I am an old hand in antiquated electronics (transistors and not yet with PICs), they asked me to kick start the project. Nobody wanted to build the model bridge, so that too came upon my lap to deal with. Model making is all new to me, but soon became a new hobby for me.

Wardell Bridge.

The acquired console.

Control Panel Layout

Proposed display layouts

The boat traverses back and forth along a slot in the table.

Both lift-span and the boat run on their own pulley-cable system.

For those unfamiliar with a lift-span bridge operations.

 

 

Tags: 1/72 , Boat , Bridge , diorama , Working

Peter

  • Member since
    December, 2002
  • From: Bury St Edmunds, Suffolk, England
Posted by Bish on Tuesday, January 30, 2018 4:25 PM

This will be fun. So the control is a real one as used on the bridge, i like that idea.

''I am a Norfolk man, and i glory in being so''

 

On the bench: Rudel Stage 3

                     Academy 1/72nd Apache AH.1

  • Member since
    July, 2014
  • From: Meridian, ID
Posted by modelcrazy on Tuesday, January 30, 2018 5:59 PM

That's pretty cool.

Steve

ON THE BENCH

Too many projects to list. 

  • Member since
    January, 2018
Posted by PeterPan on Tuesday, January 30, 2018 9:42 PM

Thank you Bish and modelcrazy for your expression of interest.

_____________________________________

Doing some reverse engineering.

 

The museum is a non-profit organisation and has limited funding. I spent a few months designing and drawing up plans at a minimal budget.

Peter

  • Member since
    January, 2006
  • From: Pineapple Country, Queensland, Australia
Posted by Wirraway on Wednesday, January 31, 2018 3:11 AM

Peter, that is a fantastic project ! I have family in Alstonville and visit the museum whenever I am in Ballina.  I have been following your progress on www.shipmodels  I look forward to seeing this in action.

"Growing old is inevitable; growing up is optional"

" A hobby should pass the time - not fill it"  -Norman Bates

 

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  • Member since
    May, 2009
  • From: Poland
Posted by Pawel on Wednesday, January 31, 2018 8:44 AM

Hello!

That's a very cool project, and very original, too! Good luck with it and thanks for sharing, have a nice day

PaweĊ‚

All comments and critique welcomed. Thanks for your honest opinions!

www.vietnam.net.pl

  • Member since
    December, 2017
  • From: Plano (Dallas), Texas
Posted by mmthrax on Wednesday, January 31, 2018 9:55 AM

WOW!  That is super neat.  I really want to see this come together.  Best of luck.  This is an exceptional project.  

Just keep picking away at it...

  • Member since
    October, 2003
  • From: Canada
Posted by sharkbait on Wednesday, January 31, 2018 10:42 AM

Great interesting project and educational too! Best of luck with it. What boat model are you planning on using? What scale 1/72? Cheers Sharkbait.

You have never been lost until you've been lost at Mach 3!

  • Member since
    June, 2014
  • From: New Braunfels , Texas
Posted by Tanker - Builder on Wednesday, January 31, 2018 11:27 AM

Peter ;

 I think you are headed in the right direction here . Now a suggestion . Why don't you use some model rail ideas for moving the boat and bridge to simplify everything in case of a breakdown . You could use a pin for the front and rear of the boat on a Engine below on a short straight track . Simple chain hoist for the bridge hidden by the bridge structure . 

 You could use a continous chain or belt ( Small , inside one of the towers and Use it to raise it and just gravity assist to lower it . Balance would be critical though . 

  • Member since
    January, 2018
Posted by PeterPan on Wednesday, January 31, 2018 4:24 PM

Thank you Wirraway, Pawel, mmthrax, sharkbait, and Tanker-Builder for your comments and show of support. Much appreciated.

Peter

  • Member since
    January, 2018
Posted by PeterPan on Wednesday, January 31, 2018 4:36 PM

Tanker - Builder

Peter ;

 I think you are headed in the right direction here . Now a suggestion . Why don't you use some model rail ideas for moving the boat and bridge to simplify everything in case of a breakdown . You could use a pin for the front and rear of the boat on a Engine below on a short straight track . Simple chain hoist for the bridge hidden by the bridge structure . 

 You could use a continous chain or belt ( Small , inside one of the towers and Use it to raise it and just gravity assist to lower it . Balance would be critical though . 

Just to let you know, I am already 2/3 in completion of the project. I came to this forum late. So I am posting what has already been done, on a daily basis, until I catch up to where I am at.

In this regard, the method of mobilizing the bridge and boat has already been decided on, though it has not yet been totally assembled and tested. I hope it will work. 

The bridge model system does not require counterweights. The ones shown in diagram will be false (balsa) and I am relying on gravity (and weight of span) for lowering the span as you mentioned. 

The boat will have a vane attached, and hopefully it will float across the table (about 2 mm) above the water, for it will be running on rails under the table. The boat will not be fixed to the vane, but resting on it via keyways.

Thanks for expressing your support and ideas.

Peter

  • Member since
    November, 2008
  • From: Far Northern CA
Posted by mrmike on Wednesday, January 31, 2018 4:39 PM

As Dr. Spock says "fascinating"! Look forward to seeing your next post.

Mike

  • Member since
    January, 2018
Posted by PeterPan on Wednesday, January 31, 2018 4:57 PM

The museum workshop is too small to include this display table, so I am building it at home. Since I have no garage, the lounge-dining room will have to do.

When the timber arrived, it got marked out, cut, and assembled. The line you see across the table os a 3 mm gap/slot for the boat vane.

Under the table will be a control box. After the diorama is built, both table and box will be assemble at the museum. Together they won't fit through the door. The box has two doors for accessing the motors, pulley-cable system, and various electronics.

Peter

  • Member since
    January, 2018
Posted by PeterPan on Wednesday, January 31, 2018 4:59 PM

mrmike

As Dr. Spock says "fascinating"! Look forward to seeing your next post.

Mike

Thank you Mike.

Peter

  • Member since
    July, 2014
  • From: Meridian, ID
Posted by modelcrazy on Wednesday, January 31, 2018 5:42 PM

Nice work Peter. That's really going to be something to see in action.

Steve

ON THE BENCH

Too many projects to list. 

  • Member since
    July, 2014
Posted by Bakster on Wednesday, January 31, 2018 7:44 PM

Wow. What a project. I will be following.

 

  • Member since
    November, 2005
  • From: Formerly Bryan, now Arlington, Texas
Posted by CapnMac82 on Wednesday, January 31, 2018 8:41 PM

This is a cool project.

Ok, like Tanker-Builder, I might have tweaked it a bit.  Like using a pair of rare earth magnets to both float and drive the boat.  In 1/72 scale, I would have a full set of working lights (from the railroad section), too.

Now, I would include a small sound system, too.  That's because the boat, per local waterway regulations typically halts and signals the bridge with a horn.  The bridge operator then sounds his horn when the bridge is fully raised, at which point the bot can proceed.   At a distance downstream from the bridge, the bridgekeepr sounds the horn again (3 short in US inland waters IIRC) to caution the boat that the way back is about to be blocked.

Ok, that's a bunch more work, but also incredibly prototypical for a museum setting.

That's my 2¢, spend it wisely Smile

  • Member since
    January, 2018
Posted by PeterPan on Wednesday, January 31, 2018 10:07 PM

modelcrazy

Nice work Peter. That's really going to be something to see in action.

Thanks. I too am looking forward to see in action.

Peter

  • Member since
    January, 2018
Posted by PeterPan on Wednesday, January 31, 2018 10:08 PM

Bakster

Wow. What a project. I will be following. 

Thanks for following.

Peter

  • Member since
    January, 2018
Posted by PeterPan on Wednesday, January 31, 2018 10:28 PM

CapnMac82

This is a cool project.

Ok, like Tanker-Builder, I might have tweaked it a bit.  Like using a pair of rare earth magnets to both float and drive the boat.  In 1/72 scale, I would have a full set of working lights (from the railroad section), too.

Now, I would include a small sound system, too.  That's because the boat, per local waterway regulations typically halts and signals the bridge with a horn.  The bridge operator then sounds his horn when the bridge is fully raised, at which point the bot can proceed.   At a distance downstream from the bridge, the bridgekeepr sounds the horn again (3 short in US inland waters IIRC) to caution the boat that the way back is about to be blocked.

Ok, that's a bunch more work, but also incredibly prototypical for a museum setting.

That's my 2¢, spend it wisely Smile

Thanks CapnMac82, but I beat you to it.
 
The bridge will have both road and vessel traffic lights, so too will the boat. Currently working on a car, and a house, with lights too.
The bridge has an alarm bell while the orange traffic lights are flashing (before the red ones come on). The road traffic gates swing across the road to block traffic. The bridge fender piers, and span, will have red and green navigational lights. On the span there will be vessel traffic lights operate according for both up or downstream of the boat. The boat will have a diesel engine sound when travelling. A fog horn will sound before the boat starts its journey.
 
The boat does not turn around, but does come back (on next operation of the bridge). The boat will be symmetrical in appearance to avoid it from looking as if it is reversing. As a result, there will be a change over in the boats navigational and stern lights.

Peter

  • Member since
    July, 2014
  • From: Meridian, ID
Posted by modelcrazy on Wednesday, January 31, 2018 10:41 PM

This is getting better all the time.

Steve

ON THE BENCH

Too many projects to list. 

  • Member since
    January, 2018
Posted by PeterPan on Thursday, February 01, 2018 2:29 PM

modelcrazy

This is getting better all the time.

Thank you modelcrazy.

Peter

  • Member since
    January, 2018
Posted by PeterPan on Thursday, February 01, 2018 2:48 PM

The first thing I build for any electronics, with its own Power Supply Unit (PSU), is to build the PSU. From this unit all other circuitry can be designed, proto-boarded, and tested.

This project requires 24, 12 and 5 volts. Each capable of handling 2 amperes. I designed the circuit board to include space and tracks for a spare voltage, source in case I need it.  Though I made sure that only one motor will be on at a time. I do not know what the practicle loads will be. I might need another 12 volt source to handle any excess.

Unserviceable equipment have been cannibalized for spare parts. On this circuit board I used heatsinks from old PC PSUs.

The circuit tested okay.

Peter

  • Member since
    June, 2014
  • From: New Braunfels , Texas
Posted by Tanker - Builder on Thursday, February 01, 2018 4:55 PM

Ok Pete .

Here's a solution to the boat shape . A double ended passenger ferry .Problem of direction solved !

  • Member since
    January, 2018
Posted by PeterPan on Thursday, February 01, 2018 5:24 PM

Tanker - Builder

Ok Pete .

Here's a solution to the boat shape . A double ended passenger ferry .Problem of direction solved !

Thanks Tanker-Builder, that is a great idea Yes. Wish I had thought of that, or joined the forum, earlier.

Just before Christmas I ordered two cheap model wooden fishing boat kits from China. Last month I built and joined two bow sections. I will show how they turned out later.

However, here is the online photo of the kit boat, and I edited it to see what 2 x bow sections will look like. The boat is short in length too, which gives the appearance of the boat further away, and having more time to travel under the bridge.

Peter

  • Member since
    November, 2009
  • From: SW Virginia
Posted by Gamera on Friday, February 02, 2018 8:22 AM

Oh wow, that's really cool! Love how the former actual controls are worked into the display. And good call on the boat, sounds much easier than trying to rig some system so it can turn around. 

Love to see a video clip of the whole thing in operation when finished if possible. 

"I dream in fire but work in clay." -Arthur Machen

 

  • Member since
    January, 2018
Posted by PeterPan on Saturday, February 03, 2018 2:48 AM

Thank you Gamera for supportive comments.

________________________________________

Start of building the bridge.

 

 

 

Peter

  • Member since
    April, 2012
  • From: Florida USA
Posted by Striker8241 on Saturday, February 03, 2018 8:43 AM

Very nice work and good job on the power supply! Beer I'm ok with the electronics and the ship model, but I'd balk at the wood work. Glad you're doing it and not me Big Smile Looking forward to seeing this thing fly... or rather float....

Cheers,

Russ

 

  • Member since
    June, 2014
  • From: New Braunfels , Texas
Posted by Tanker - Builder on Saturday, February 03, 2018 12:40 PM

Hi , Peter !

 Nice idea with the boat . Now that said .Take the vessel and build a small overhanging deck with semi-flat ends , after removing the Bulwarks . . Go up one level and take the wheelhouses , Blend into one and put in the center . Viola ! One small double ender ! She would have probably one life boat ! 

 You can use the bulwark material to build up the sides of the passenger area .

  • Member since
    January, 2018
Posted by PeterPan on Saturday, February 03, 2018 1:50 PM

Striker8241

Very nice work and good job on the power supply! Beer I'm ok with the electronics and the ship model, but I'd balk at the wood work. Glad you're doing it and not me Big Smile Looking forward to seeing this thing fly... or rather float....

Cheers,

Russ

 

Thank you Russ for your compliment and supporting comments.

Peter

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