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How can I build a Lake with a moving boat?

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How can I build a Lake with a moving boat?
Posted by DCHO on Monday, September 5, 2016 11:30 AM

I want to build a small Lake (less than a foot in diameter) with a layer of real water and a boat moving in the water.  I have heard of a system with a magnet under the lake base.  What can I use under the lake base?  A pulley system with a belt of some kind, chain and sprockets, where would I find them?  Then I need to attach the magnet to the belt or chain and put a magnet in the boat.  Has anyone done this?  Can you help me get started?

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Posted by dknelson on Monday, September 5, 2016 12:03 PM

Think long and hard about bringing real water into what I assume is an indoor layout.  The guys who have tried have usually done away with it due not only to the introduction of moisture into the layout room but also the look and odor of water when it gets stagnant.  It also tends to attract insects and other critters such as silverfish.  

Dave Nelson

AMENDED POST: A more realistic scene would be to try to find some way to have the boat gently rocking on the small lake or pond.  It should be possible to use the various cast resin or plastic waters with a small opening where a wire attached to an eccentric of some kind could make the boat rock -- and gloss medium on the surface could create the gentle wave actions from the boat.  

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Posted by mlehman on Monday, September 5, 2016 12:50 PM

I can imagine a moving magnet system working -- and I can imagine making it work with real water making it 100 times more complicated. Dave's got some good points on this. But there's also the argument to keep things simple, as you'll probably have better luck at getting and keeping it going.

One way to make a moving magent system would involve another model railroad. You could lay some G gauge track to suit you navigator's "course" then haul a large magnet around with it. Since it's controllable like any other model RR, it would be easy to slow and speed the ship up with this method. For N scale, you might get away using HO for your "sub-track."

Mike Lehman

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Posted by ctyclsscs on Monday, September 5, 2016 12:53 PM

Less than a foot in diameter? What scale are we talking about?

Jim

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Posted by mlehman on Monday, September 5, 2016 3:01 PM

ctyclsscs

Less than a foot in diameter? What scale are we talking about?

Jim

 

Laugh

True enough, that's a pond in most scales, even N. That boat will just be spinning in circles -- or quickly grounded in the mud.

Mike Lehman

Urbana, IL

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Posted by RR_Mel on Monday, September 5, 2016 5:15 PM

DCHO

I want to build a small Lake (less than a foot in diameter) with a layer of real water and a boat moving in the water.

 

Real water and model railroad layouts is a big No No.  I can visualize a pond with glass for the water and a mechanism below the glass to move a boat.  One would have to do some fancy art work under the glass to resemble the pond bottom.  I would think that you would have to use glass to prevent scratching the surface with the moving boat.
 
I would go with a servo to move the magnet with maybe a somewhat loose drive rod so that the boat doesn’t always move on the same axis.
 
Doing the unusual animation is kinda my thing and this would fit the definition of unusual.
 
This is my HO scale pond, it measures 9¾" x 6¼" x ¾" deep.  The water is Rust-Oleum Parks Gloss Super Glaze from Home Depot.
 
 
 
 
A rowboat with a guy fishing might look OK.
 
Good Luck!

 

Mel
 
Modeling the early to mid 1950s SP in HO scale since 1951
 
My Model Railroad   
 
Bakersfield, California
 
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Posted by jjdamnit on Monday, September 5, 2016 10:05 PM

Hello all,

Even the great HO scale modeler John Allen abandoned the notion of actual water on his pike for the same reasons mentioned.

His solution was to use a rippled or textured glass on his mill pond to replicate the look of water.

I would suggest adapting a similar solution.

The glass could be placed over a painted underwater scene-scape. Through the use of color grading depth could be replicated while maintaining a parallel surface under the glass.

Then a track or path could be cut in the underlying scene-scape. A motor could be placed in the center of the area.

A horizontal arm would be extended from the motor, with a possible support on the outer edge of the area. 

Attached to the horizontal arm would be a vertical element with a magnet that would move just under the glass "water." This element would not be fixed to the horizontal arm, but allowed to move along it's length and track through the track or path cut in the sub-scenery.

Then a water craft, with an alternate polarity magnet, could be placed atop the glass "water."

When the motor is actuated the circular motion of the arm tracking through the path of the track cut in the sub-scenery would move the craft. The texture of the glass could also provide the bob of the craft across the surface. If the surface of the glass is smooth, not textured, then there would be no bob of the craft.

If you place the connecting magnets of the craft on the bow, when the polarity of the motor is reversed, then the craft would come-about.

All this without having to introduce actual water into your pike.

Hope this helps.

"Uhh...I didn’t know it was 'impossible' I just made it work...sorry"

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Posted by NittanyLion on Monday, September 5, 2016 11:54 PM

DCHO

I want to build a small Lake (less than a foot in diameter) with a layer of real water and a boat moving in the water.  I have heard of a system with a magnet under the lake base.  What can I use under the lake base?  A pulley system with a belt of some kind, chain and sprockets, where would I find them?  Then I need to attach the magnet to the belt or chain and put a magnet in the boat.  Has anyone done this?  Can you help me get started?

 

Find one of those Christmas ice skating displays.  Its got all the mechanism you need, just extract it from the wintery, Christmas-y base.

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Posted by snjroy on Tuesday, September 6, 2016 8:56 PM

Not sure I would recommend it, but some have done it, e.g. the Roadside America O scale layout. My guess is that the water stays clean because of the constant movement. Lights are also kept low from what I've seen. And maybe they put chlorine.. Maybe worth a visit or a phone call.

Simon

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Posted by superbe on Tuesday, September 6, 2016 9:28 PM

Not worth the time and effort for such a small lake.

Just My       Worth.

Bob

 

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Posted by davidmurray on Tuesday, September 6, 2016 10:07 PM

Have you looked into the system used for moving highway cars and trucks?

I haven't tried either.

Dave

 

David Murray from Oshawa, Ontario Canada
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Posted by carl425 on Tuesday, September 6, 2016 10:16 PM

Even if you were able to overcome all the issues that have already pointed out and actually make it work, it is not going to look at all convincing.  Water can't be made to move at scale speed.  Your boat is going to look like a cork bobbing around in a bowl of water.  This is why all the old movie makers who used models in this way shot with high speed cameras and slowed down the playback.

I have the right to remain silent.  By posting here I have given up that right and accept that anything I say can and will be used as evidence to critique me.

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Posted by joe323 on Wednesday, September 7, 2016 10:27 AM

carl425

Even if you were able to overcome all the issues that have already pointed out and actually make it work, it is not going to look at all convincing.  Water can't be made to move at scale speed.  Your boat is going to look like a cork bobbing around in a bowl of water.  This is why all the old movie makers who used models in this way shot with high speed cameras and slowed down the playback.

 

There was an episode of The Brady Bunch where Gregg shoots a movie about what it was like to be a pilgrim.  He shot a picture of The Mayflower sailing that obviously looked like a toy boat floating in a bathtub.  

I think that is what it would look like.

Joe Staten Island West 

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Posted by Anonymous on Wednesday, September 7, 2016 2:32 PM

Nothing looks more unrealistic on a layout than real water. You just can´t scale down waves and any vessel will bob on its surface like a rubber duck in a tub - unless ...

Miniatur Wunderland has a quite large "water feature", showing a typical Scandinavian fjord and  harbor. There are a couple of RC ships plowing through these waters, which big enough to float fairly stable. Nevertheless, the water just doesn´t look right.

See for yourself:

Should you get the idea of incorporating something like it into your layout - the ships are up to 10 ft. long.

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Posted by superbe on Wednesday, September 7, 2016 9:20 PM

If all else fails consider creating the illusion of the boat moving through the water by using water affects.

Bob

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Posted by snjroy on Wednesday, September 7, 2016 9:21 PM

joe323

 

 
carl425

Even if you were able to overcome all the issues that have already pointed out and actually make it work, it is not going to look at all convincing.  Water can't be made to move at scale speed.  Your boat is going to look like a cork bobbing around in a bowl of water.  This is why all the old movie makers who used models in this way shot with high speed cameras and slowed down the playback.

 

 

 

There was an episode of The Brady Bunch where Gregg shoots a movie about what it was like to be a pilgrim.  He shot a picture of The Mayflower sailing that obviously looked like a toy boat floating in a bathtub.  

I think that is what it would look like.

 

 

I remember that episode! And what about that splash scene when they land foot? Priceless. 

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Posted by farrellaa on Thursday, September 8, 2016 7:19 AM

I would use a super magnet on a moving rail/bar/rod under the water surface which should be a thin sheet of glass or plastic. I would make the boat on a small pc of clear acetate/styrene that has some small wave/wake modeled on it and the whole thing would move with the magnet. The boat also needs another magnet or steel slug to be attracted by the underside magnet. This is something that I had considered on my layout but now don't have the space for it. A 12" or smaller lake won't allow for much action though unless you are using a 8' scale rowboat/dinghy. Just my thoughts.

   -Bob

Life is what happens while you are making other plans!

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Posted by Anonymous on Thursday, September 8, 2016 11:04 AM

Don´t you think a rowboat, circling a small pond without anyone moving the oars looks a bit silly?

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Posted by carl425 on Thursday, September 8, 2016 12:18 PM

Sir Madog

Don´t you think a rowboat, circling a small pond without anyone moving the oars looks a bit silly?

I have never seen any animation on a model railroad other than the trains that I thought didn't look silly.

I have the right to remain silent.  By posting here I have given up that right and accept that anything I say can and will be used as evidence to critique me.

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Posted by Anonymous on Thursday, September 8, 2016 1:38 PM

carl425
I have never seen any animation on a model railroad other than the trains that I thought didn't look silly.

That´s why you don´t find any of it on my layout!

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Posted by hon30critter on Thursday, September 8, 2016 1:58 PM

Actually, I think having a stationary row boat with moving oars would be somewhat more realistic if you want that sort of thing (I don't). The fact that it isn't making any forward progress could be blamed on strong currents or the wind.Smile, Wink & Grin A little texturing on the surface would suggest moving water.

I have to say that a few animations do look reasonably good. Things like crossing gates with flashers come to mind. Fallers car system is OK except for the fact that the cars move too fast and the starts and stops are too sudden. I recall seeing a video of a cyclist travelling down a road with the legs and pedals actually pumping away. That was very realistic IMHO.

Dave

I'm just a dude with a bad back having a lot of fun with model trains, and finally building a layout!

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Posted by CentralGulf on Thursday, September 8, 2016 10:23 PM

Boats and ships moving through water at any kind of significant speed generate wakes. Wakes are really complex as can be seen here.

http://www.wikiwaves.org/Ship_Kelvin_Wake

It would be virtually impossible to generate realistic moving wakes with simulated water.

The trouble with real water is that real waves, no matter how small they are, will have real periods (time between wave peaks) which simply cannot be scaled. If you look at those 10 foot model ships in the video posted by Ulrich, you will notice lights reflected in the water. The lights "bounce" in sync with the "waves" generated by the ships, whose wake waves are pretty much 87 times too long to be realistic.

 

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Posted by rs2mike on Saturday, September 10, 2016 7:20 PM

I was thinking this.  Not sure if it would work but something to look at. 

How about the faller car system  mount your car in the boat and keep the boat just slightly off the roadbed(lake).  Make the lake out of resin or plexi glass or glass.  Make bow waves that are attached to the boat and a wake that attaches to the boat.  Wire the system like you would if you were doing a road for the car to follow.

 

alco's forever!!!!! Majoring in HO scale Minorig in O scale:)

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Posted by danno54 on Sunday, September 11, 2016 9:38 AM
Agreed! I'd just go with a stll scene and peoples imagination take it from there. Trying to animate things sometimes just creates a Lego Land type look.
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Posted by tomikawaTT on Saturday, September 17, 2016 2:11 PM

KISS!

Settle for a boat tied up to a narrow dock or quay.  Have your intrepid oarsman helping his lady love into (or out of) same.  They'll get under way (or not) as soon as they quit smooching...

Obviously, real water is unnecessary.  It's also a disaster looking for a home.  Remember, Murphy is alive and well - and just looking for an opportunity to prove it.

Chuck (Modeling Central Japan in September, 1964 - with watercourses navigable by kayakers living out death wishes)

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Posted by last mountain & eastern hogger on Monday, September 19, 2016 10:41 PM

Whistling

The OP. wanted suggestions not just poo poos.

My suggestion would be to get one of those figure skating scenes with the moving skaters that they sell around Christmas.  You may be able to change the tracking underneath it ( not sure of the difficulty of that) and give it less power to slow it down.

A little creativity to change the ice to water (envirotex lite) and some scenery change from winter to a more appropriate season. The magnet off the bottom of one of the skaters placed onto your boat and you should be in business.

Keep in mind, it would be alot of work for a small magical scene that would struggle to be realistic.  It would be easier to make it a winter scene and leave the skaters skating.

Johnboy out............till next time

from Saskatchewan, in the Great White North.. 

We have met the enemy,  and he is us............ (Pogo)

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Posted by dualgauge on Wednesday, September 21, 2016 7:22 PM

At the National Train Show at Indy this year. There was an N-Trak module with a boat moving across the lake. Was a little bit jerky. Module owner said humidty was causing this. I think he had a train running back and forth under the lake with magnets to make boat run with the train. Would need a hard smooth surface.

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Posted by bigpianoguy on Sunday, September 25, 2016 12:38 AM

Possibly your best bet would be to video your scene & green screen in a boat...

 

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