NICE!
But, it’s stuff like that that makes me REALLY appreciate ‘modern’ conveniences! 
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Beautiful Jim.
The finished cabin looks terrific.
Your thought about 3D printing would probably speed up the build process but to me it brings to mind that ol saw; “Is it real or is it Memorex” Most people can tell if they are sitting in a concert hall hearing a performance or sitting in the living room listening to a tape. Maybe subtle but a distinct difference.
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Looks like a medieval torture device to me! Happy New Year, Jean-Gilles!
Oh yeah, I forgot to say that you did a great job on your tent cabin, and waaaaaaaay faster than me…
No matter how long it takes, the main thing is to take pleasure in building and succeed in finishing it, in order to feel a certain enjoyment. Happy New Year Jim
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Beautiful work on the tent cabin! Looks very authentic!
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Thanks, Ray! Much appreciated…
Jim, I’m in the process of starting another surrey parker loader in a bigger scale (7/8).
I have the out rigging stabilizers figured out, but my question is:
What kind of rigging was used to swing the boom from side to side. I know loggers didn’t just pull it over to the log pile. (maybe they did.) I have stared at old pictures til my eye’s crossed and I can’t find the rigging.
That is an excellent question, John. Fun project!
I didn’t model any such mechanism, nor did I see it in any pictures.
Maybe they just used long poles to steady/move the log around (see peavey, cant hook, or pike pole, though those seem to be more used to wrangle logs at your feet or in the water).
Once they hoist a log, that would kinda heavy to man handle it back to center to lay on the flat car.
Something had to pull that boom back and forth. Of course the trees down south weren’t as big as western species, so maybe it was manhandled.
I’m using a dolbeer donkey and that has only one spool with cable. That wold be for raising and lowering the boom only. To run other functions you need a multi spooled donkey like they used out west.
I have a single drum here too. Since I am a known not-historically-perfect modeler, this doesn’t bother me much, I will admit.
You gonna post a build log? I will follow it with interest if you do…
My understanding of the SP loader operation is;
The boom is stationary for up and down movement. The mast pivots in pockets top and bottom, so as the mast pivots the boom swings left and right. The single drum engine was used for the load line, to raise and lower the logs.
The logs once raised usually had a “tag” line attached at each end that could be pulled by a man to swing the boom and direct the log placement.
Besides the boiler and single drum engine the only other mechanical devices involved were the 2 hand winches that were used for the tie down lines.
John,
I have the plans from Tom Yorke’s “O” scale kit that show some pretty good detail. These plans are of the Argent Lumber Co. unit that was used up till 1956.
If you want a copy shoot me your address.
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Rick, I have that plan and blew it up to 1:20.3 and built it.
It makes sense that the logs were manhandled, since I could find no pictures showing additional fittings to swing the boom.
I don’t want to steal Jim’s thread, but I’ll look for a pic of my build and post it.
Fantastic! Well done!
Thanks, Jim, I didn’t mean to hack your thread. 
This thread has been dead for a while. Nice to see some life again. Hack away!
I’m still working on more tent cabins. Sigh.
Beautiful model John. The use of tag lines was pretty common right up through the 30’s and 40’s. There are pictures of them being used even with the swing boom McGifferts and Clydes.
Rick,
You would have thought that the crew would have figured out a way mechanically to swing the boom.
Perhaps hand winches with lines on either side.
Anyway, it’s opened up another part of logging equipment use I didn’t know about.
How ever having said that, I don’t build exact duplicate models of real prototypes.
I build what I like. They aren’t going in a museum for display. 