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Author Topic: Sternwheel engines  (Read 3335 times)
5thwheel
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« Reply #15 on: July 13, 2021, 08:25:17 AM »

I don't know if you can find a copy now but I am getting my information from The marine Iron Works of Chicago U.S.A.  It is a reprint off a 1902 catalogue. ISBN 0-948885-00-9.


* booklet.jpeg (27.62 KB, 305x459 - viewed 102 times.)
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Bill Hudson
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Les Tindall
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« Reply #16 on: July 14, 2021, 01:48:36 AM »

Hi Bill, amused by the thought of turds flying around the sternwheel!  Thanks again for the info.  My boat will have a squared-off bow as it will have the (Erie or Bucyrus) "clam shell" dredger fitted.   Looking at the engine size chart you posted the boat will be a little overpowered as I am nearing completion of the engines.  Mine are 10" bore with 4ft stroke, but then the extra power would be useful with that flat front. I'll post some photos when the engines are done.
Les
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Les Tindall
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« Reply #17 on: July 19, 2021, 12:32:53 PM »

Well the two engines are almost complete (as far as can be before mounting on the support beams which will include the main transmission beam).  The reversing gear will then be added.  The attached photo shows them in my usual dark grey before final painting with steel, silver, etc. to highlight the detail.   Some of the bits were rather fideley (scale is 1/24th) especially the springs on top of the valve levers (very fine plastic rod wrapped around a larger piece of rodding) plus lots of nbw's (from Historex Agents here in the UK).
Les


* Sternwheeler engines a.JPG (44.12 KB, 591x443 - viewed 131 times.)
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5thwheel
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« Reply #18 on: July 19, 2021, 12:56:34 PM »

Looks believable.  Nice job.
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Bill Hudson
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Chuck Doan
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« Reply #19 on: July 19, 2021, 08:01:12 PM »

Just catching up...nice work Les! Interesting project.
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finescalerr
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« Reply #20 on: July 20, 2021, 01:28:59 AM »

I like it. -- Russ
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Les Tindall
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« Reply #21 on: July 20, 2021, 02:31:47 AM »

Thanks for the comments.  Just spotted a couple or errors,  a rather "blobby" look on the end of the front cylinder and a nut missing on the back one.   Now rectified.  Its amazing what you can spot in a photo and not in "real life"!   
Les
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Barney
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« Reply #22 on: July 20, 2021, 03:56:00 AM »

Another superb piece of plastic engineering  - great stuff  Les
Barney
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Bill Gill
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« Reply #23 on: July 20, 2021, 08:51:55 AM »

Les,  the engines are looking good. What did you print them in?
Whatever you call it  (head, loo...) I'm sure it wouldn't have anything remotely like a holding tank.

Lot of good information in general in this thread. I want to make an 18 foot HO scale steam launch.
I have a hull but haven't found anything I can use as an engine. Anyone have ideas?
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Les Tindall
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« Reply #24 on: July 20, 2021, 09:43:51 AM »

Hi Bill, the engines are scratch built in styrene (tube, strip, angle, etc), lots of fiddley bits but reasonable happy with the result.   I've been thinking about the head (loo) and decided a couple of buckets (suitably "weathered!") would be about right - keep it BASIC.  At the end of the day it is a work boat.
Your thoughts about a small steam launch sound interesting.  It would say a small vertical boiler, nicely clad in wood and lots of brasswork, coupled to a small single cylinder engime would look about right.  Very Victorian. Perhaps take a look at the film "African Queen" for ideas.
Les
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Bill Gill
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« Reply #25 on: July 20, 2021, 04:20:38 PM »

Thanks, Les. Somehow I got it in my sieve of a head that you 3D printed the engines. They look really good.

Yes, I have a few photos of steam launches, new and restored, taken at a museum, and your description of details to feature are spot on.
I'm not that good to be able model the engine in HO scale, but have been looking at possibly kitbashing an HO Woodland Scenics Rural Sawmill engine and boiler that a friend gave me, although the castings are very rough. I think the molds have passed their prime.
Here's what the kit looks like built as intended.


* vertical stam engine.jpg (71.71 KB, 571x800 - viewed 101 times.)

* parts.jpg (59.7 KB, 1000x881 - viewed 105 times.)
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5thwheel
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« Reply #26 on: July 20, 2021, 08:32:56 PM »

Thanks, Les. Somehow I got it in my sieve of a head that you 3D printed the engines. They look really good.

Yes, I have a few photos of steam launches, new and restored, taken at a museum, and your description of details to feature are spot on.
I'm not that good to be able model the engine in HO scale, but have been looking at possibly kitbashing an HO Woodland Scenics Rural Sawmill engine and boiler that a friend gave me, although the castings are very rough. I think the molds have passed their prime.
Here's what the kit looks like built as intended.

I would suggest that you turn the engine 90º and run the prop shaft directly off the flywheel rather than by belt.
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Bill Hudson
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Ray Dunakin
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« Reply #27 on: July 21, 2021, 12:15:39 AM »

Well the two engines are almost complete (as far as can be before mounting on the support beams which will include the main transmission beam).  The reversing gear will then be added.  The attached photo shows them in my usual dark grey before final painting with steel, silver, etc. to highlight the detail.   Some of the bits were rather fideley (scale is 1/24th) especially the springs on top of the valve levers (very fine plastic rod wrapped around a larger piece of rodding) plus lots of nbw's (from Historex Agents here in the UK).
Les

Wow! Those look fantastic!
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Bill Gill
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« Reply #28 on: July 21, 2021, 05:30:03 AM »

Bill (5th Wheel), Thanks, that's what I've been looking at doing. I don't like the plumbing up high, the flywheel is too big and the boiler firebox is awkward, but I think I can make it work.

Les, sorry, didn't mean to hijack your thread.
« Last Edit: July 21, 2021, 12:00:40 PM by Bill Gill » Logged
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