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Author Topic: Model steamtug Maarten.  (Read 22500 times)

J.Walpot.

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Model steamtug Maarten.
« on: December 27, 2009, 01:53:17 pm »
I'm new here so hello to you all. :-))
In 1991 I started building model steam engines and in 1996 I started the building of my steamtug Maarten. The real Maarten still excists and is located in Leeuwarden.
The engine is my own design and it took 6 years to build it. ( I only build during the autumn and winter season )
A placed a video on YouTube. http://www.youtube.com/watch?v=Tj2qiwjeeAY
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gondolier88

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Re: Model steamtug Maarten.
« Reply #1 on: December 27, 2009, 02:06:56 pm »
Beautiful mate! :-))

Interesting valve gear- what type is it?

Good to see proper croshead slides, not many model engines have them, but yours are just perfect- a pleasure to watch.

Also- the two pumps on the back- are they both air pumps or is one a boiler feed?

Greg
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Don't get heated...get steamed up!

J.Walpot.

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Re: Model steamtug Maarten.
« Reply #2 on: December 27, 2009, 02:35:09 pm »
Thanks Gondolier88.

The valve gear is Hackworth. There are 3 pomps on the back. The first is a coolingwater pomp.  The second is the air pomp. The third is the boiler feed.

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Underpressure

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Re: Model steamtug Maarten.
« Reply #3 on: December 27, 2009, 02:59:14 pm »
Welcome to the forum Jan, that is a beautiful engine you have built, I look forward to seeing pictures of your Maarten tug.

Neil
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Engineman

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Re: Model steamtug Maarten.
« Reply #4 on: December 27, 2009, 04:42:48 pm »
To say that it is wonderful - it is to say nothing... Absolutely outstanding!!!! Is it 'honest' triple expansion engine?
More photos, please!!! Of the steam plant (as the boiler is the same piece of engineering art as the engine) and the boat itself!
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gondolier88

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Re: Model steamtug Maarten.
« Reply #5 on: December 27, 2009, 05:45:20 pm »
Thanks for clarifying that for me- couldn't quite tell from the video.

Are the 'air bells' cosmetic or working?

What kind of vacuum are you pulling from that pump- looks a good size?

Greg
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andywright

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Re: Model steamtug Maarten.
« Reply #6 on: December 27, 2009, 06:48:51 pm »
Magnificent workmanship, an absolute marvel of engineering, welcome to the forum, its a pleasure to see machinery like that.
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Navigational Aids vessel Master. Old Conway 70-72

MONAHAN STEAM MODELS

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Re: Model steamtug Maarten.
« Reply #7 on: December 27, 2009, 09:12:40 pm »
Welcome aboard Jan,

Wow, your engine is absolutely amazing!  :-)) Beautiful!
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Bernhard

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Re: Model steamtug Maarten.
« Reply #8 on: December 27, 2009, 10:04:39 pm »
Woow ..I   wont it...........top one.... :-)).. :-)) ..  :-))..what a work...................

Regards Bernhard
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kno3

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Re: Model steamtug Maarten.
« Reply #9 on: December 27, 2009, 11:12:43 pm »
More pictures please!   :-))
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J.Walpot.

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Re: Model steamtug Maarten.
« Reply #10 on: December 28, 2009, 03:20:47 pm »
Thanks for the nice welcome.  :-)

When I started building the engine in 1997 I wanted to build a well running and always starting engine. So it's not an "honest" triple. I wanted it to look like a triple a bit.
A real triple has only one steam supply and one discharge so that was a difficulty I had to deal with. In 2000 I decided to add the preheater, condensor and pomps. The "air bells" are hollow so they should work. If the pomps are going to work as I ment I have to wait and see. My boiler isn't ready yet.










December 2007.


March 2009.
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Bunkerbarge

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Re: Model steamtug Maarten.
« Reply #11 on: December 29, 2009, 09:00:39 am »
That is an amazing and absolutely beautiful piece of model engineering.  The only negative part is that the stunning engine is going to be enclosed when it's on the water and you are not going to enjoy seeing it running.

Fantastic model though and I'm certain that any more pictures of it's construction would be enjoyed by us all.
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J.Walpot.

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Re: Model steamtug Maarten.
« Reply #12 on: December 29, 2009, 06:09:22 pm »
Showing pictures is a lot more easy for me then to write in English so here a few pictures of the hull during construction.








The hull treated with polyester.
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Underpressure

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Re: Model steamtug Maarten.
« Reply #13 on: December 29, 2009, 06:27:23 pm »
Maarten is a very similar tug to Antheo which is also POF. At just under 900mm and weighing around 12Kg's mine has plenty of power using a Cheddar Puffin. With that triple installed, Maarten certainly will have some pulling power!

Superb model Jan, something to be really proud of.

Neil
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mogogear

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Re: Model steamtug Maarten.
« Reply #14 on: December 30, 2009, 06:06:33 am »
Jan

Your workmanship on the engine and the boat is splendid in finish and design..

Thanks for sharing
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J.Walpot.

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Re: Model steamtug Maarten.
« Reply #15 on: December 30, 2009, 10:40:36 am »
Thanks again.  :-)
This is how the propeller is made.







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steamboatmodel

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Re: Model steamtug Maarten.
« Reply #16 on: December 30, 2009, 02:18:44 pm »
Hi Jan,
How did you set the propeller blades to get the twist in them?
Regards,
Gerald.
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J.Walpot.

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Re: Model steamtug Maarten.
« Reply #17 on: December 30, 2009, 05:38:38 pm »
Hello Gerald.

I placed, the 4 blades together, with one end in the self centering lathe chuck with 4 jaws and the other end in the machine vice. Then I rotated the lathe chuck by hand.
I hope I used the right words and could be of help.
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steamboatmodel

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Re: Model steamtug Maarten.
« Reply #18 on: December 31, 2009, 01:34:04 am »
I think I follow what you did. I will have to try that.
Thanks,
Gerald.
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J.Walpot.

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Re: Model steamtug Maarten.
« Reply #19 on: January 01, 2010, 01:17:36 pm »
Happy New Year  :-))


The bearing for the propelling power.





Here you can see that the engine isn't an "honest" triple. Bore x stroke = 13 x 18 mm.


How it's done with the discharge of the cilinders.
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J.Walpot.

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Re: Model steamtug Maarten.
« Reply #20 on: January 06, 2010, 10:02:50 am »

The first parts.


The anchor finished.


The winch was more difficult.


A few pictures of the winch were a great help to build this model.

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gondolier88

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Re: Model steamtug Maarten.
« Reply #21 on: January 06, 2010, 07:45:45 pm »
Wow, just fantastic craftsmanship- the flywheel on the winch is just beautiful.

Greg
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J.Walpot.

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Re: Model steamtug Maarten.
« Reply #22 on: January 12, 2010, 05:29:36 pm »
Thanks Greg.


Thanks to the pictures, I was allowed to take on board of the real Maarten, I was able to make these details.


It took me a few month's to figure out how to make the stars.


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kno3

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Re: Model steamtug Maarten.
« Reply #23 on: January 12, 2010, 10:34:46 pm »
Wonderful. Are pictures of the real steamtug Maarten available on the net?
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HS93 (RIP)

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Re: Model steamtug Maarten.
« Reply #24 on: January 13, 2010, 01:49:02 am »
Gosh am I glad you posted the picture with the Tow bows i have been on hold with my boat for two years trying to work out the way to do the tow bows so one can be easy moved to remove the superstructure and yours have given me an idea similar to yours. the front one is the problem.
Peter
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