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Author Topic: 1/32nd Scale W.T Preston Sternwheeler Build  (Read 3851 times)

SnagboatMike

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1/32nd Scale W.T Preston Sternwheeler Build
« on: January 12, 2013, 05:52:53 PM »
As a small boy I grew up in a logging camp and was surrounded with steam locomotives and steam yarding donkeys in the early 50s. In High School I often watched a US Army Corps of Engineers snag boat steaming by my little town on Puget Sound. it was thrilling to paddle out in my kayak intercepting the W. T. Preston and furiously paddle alongside watching the big paddlewheel churning up a washboard wake behind her. At 8 knots, I couldn't keep up, but got a close-up experience of a live steamer I've never forgotten. For decades I'd forgotten Preston until retirement 2 years ago. W. T. Preston was retired in 1981 and sits in a museum display 60 miles north of me. I decided to build at a scale allowing me to make it steam powered, highly detailed with many working features. She is 63" long, 13" at the beam and draws 1 1/2" of water. The model displaces 37 pounds. Work began on February 17, 2011 with construction of the hull. I used plank-on-frame construction starting with a 1/4" thick marine plywood bottom. I've added a small keel, departing from the full-sized boat to give better tracking. The W.T. Preston was built on a steel barge and was notorious for her poor handling in wind, often backing into the wind to her destination. I was able to make many visits to the Preston taking over 400 photos and measurements of the actual vessel. The museum staff also gave me a DVD with thumbnail photos of all 200 blueprint sheets used in 1929 to build her. I selected 7 sheets for printing at 1/32nd scale and set up my miniature saw mill to custom cut lumber from 70 year-old  1" x 6" x 6' Alaska cedar fencing. This makes the wood in the model almost as old as Preston herself. Since you will be viewing 204 images spread over two years, I will spread this over many entries. The model is nearing completion at this writing and represents over 1800 hours of work. Shop trials are rapidly approaching. If all goes well, I move to dockside trials, and then on to first launch and christening. Thanks for your interest.  You can learn more about me and the projects I work on at: mjonesfamily.com. So don't mind the sawdust, Here we go.

Snagboat Mike

SnagboatMike

  • Guest
Re: 1/32nd Scale W.T Preston Sternwheeler Build
« Reply #1 on: January 12, 2013, 06:16:31 PM »
General Layout of the model and the W.T. Preston: An operational, steam powered scale model of the US Army Corps of Engineers snag boat W. T. Preston. She is 163' 5-7/8" long, beam of 34' 8-1/2", draft of 3' 8", displacement- 490 gross tons, engines- two reciprocating Gillette & Eaton steam engines with a bore of 14" and stroke of 72". Max speed- 12 Knots, cruise 9 Knots. Paddlewheel: 18' wide x 17' in diameter. Preston's mission was to remove log jams and debris, including dredging of the navigable rivers around Puget Sound. She also removed snags and deadheads from Puget Sound. The model is built at 1/32nd scale. The model is 63" long. She is being powered by a scale model 2 cylinder non-condensing slide valve steam engine with Stephenson reversing gear. Plans for the engine were drawn in CAD from photos and measurements of Preston's Gillette & Eaton steam engine. Pistons will connect directly to the paddlewheel via pitman arms and cranks. There is no belt, chain or gear drive. The model engine has a bore of 5/8" (larger than scale for efficiency purposes) x stroke of 2 1/4", which is to scale. Steam is made by a Maccsteam Ltd. 3 1/2" horizontal marine boiler modified to accept a steam manifold with extra outlets for an attenuator, extra bush for a Water Level Detection System sensor, electric boiler feedwater pump and a Spektrum RC telemetry system monitoring boiler temperature below top flue.

Harold H. Duncan

  • Guest
Re: 1/32nd Scale W.T Preston Sternwheeler Build
« Reply #2 on: January 12, 2013, 07:07:07 PM »
You have an interesting History, welcome to Paddleducks.
Looking forward to your build
cheers
kiwi

Offline derekwarner_decoy

  • Senior Member
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  • Posts: 2629
  • Gender: Male
  • Wollongong - Australia
Re: 1/32nd Scale W.T Preston Sternwheeler Build
« Reply #3 on: January 12, 2013, 08:12:34 PM »
Hi PD's........could I ask a moderator to please connect this thread to "Hullo from Edmonds" ...........which is the same W.T Preston Sternwheeler build

Derek :beer
Derek Warner

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

SnagboatMike

  • Guest
Re: 1/32nd Scale W.T Preston Sternwheeler Build
« Reply #4 on: January 13, 2013, 04:35:10 AM »
Where is the correct place on PD to post a build thread?

Snagboat Mike

Offline Eddy Matthews

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  • Posts: 5043
  • Gender: Male
Re: 1/32nd Scale W.T Preston Sternwheeler Build
« Reply #5 on: January 13, 2013, 04:43:50 AM »
Where is the correct place on PD to post a build thread?

Snagboat Mike

If it's a paddler, then post it here: http://www.paddleducks.co.uk/smf/index.php?board=5.0

If it's a model powered by any other means, then post it here: http://www.paddleducks.co.uk/smf/index.php?board=23.0

Regards
Eddy
~ Never, ever, argue with an idiot. They'll drag you down to their level and beat you with experience ~

 

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