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2-6-0 with backwards cylinders
 Moderated by: pipopak Page:    1  2  Next Page Last Page  
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 Posted: Thu Nov 23rd, 2017 12:03 pm
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pipopak
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Found today:
https://78.media.tumblr.com/80a5bc74b0cfcbe98b96513e4ecefe49/tumblr_ozv0dsixCs1v1yzz7o1_500.jpg
Jose.



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 Posted: Thu Nov 23rd, 2017 06:40 pm
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W C Greene
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MON-STROS-ITY for sure! But it sure has character...I suppose.

Woodie



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 Posted: Thu Nov 23rd, 2017 07:25 pm
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Michael M
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Is there any advantage in placing the cylinders backwards?  It seems that there is no complicated linkage to make the loco work like the rod going across the boiler just behind the smokestack.

Maybe I just don't see it, but it looks like there is no linkage to the third driver.



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 Posted: Thu Nov 23rd, 2017 08:25 pm
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Helmut
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No, the drivers are all connected. It's just the driving rod that connects to the middle axle. The valve gear type would be interesting to know, as on first glance it looks like an outside Stephenson's. Maintenance of the cylinder ass'y  is eased by that sort of mounting. In the sugar cane fields, the loco's cylinders and valve gear were placed above the running boards in order to clear the debris of the cane and avoid hampering of the works.

Last edited on Thu Nov 23rd, 2017 08:29 pm by Helmut



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 Posted: Fri Nov 24th, 2017 06:51 pm
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Helmut
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re sugar cane loco: Here's a Fowler 'Patent Drive' from down under. Note the similarities between the mechanisms.



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 Posted: Fri Nov 24th, 2017 08:40 pm
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Herb Kephart
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So who gets the blame for this? The headlight, and domes say America. The cab "spectacle plate" says England, and the rest- I would say seventh millenium Plutonian, but thats just a wild guess. Note that the coupler pocket looks normal (for the period in America) no buffers on pilot beam. All the clap trap of rods and levers says to me Swiss rack/adhesion, but that's obviously not the case here. No "cow catcher" (American) or rail raker bars (Brit). I would say that the valve gear is a form of Walschert because of the die block working in the arc shaped slot.
 Oh dear. Looks like the afternoon is going to be spent in the dusty old tomes. Damn that Pipopac---

BTW The PRR built a loco in the WW2 era that had one set of cylinders facing rear, and the rear set  facing front, all at axle level (but the loco wasn't articulated) class Q1, They found that valve gear and rod wear was worse on the rear (front facing set) due to dirt and grit kicked up by the rest of the wheels etc. They only built the one--but this lead to the much more successful, and wider known T1's of which they built 50--still not articulated, but with all cylinders facing rear

Even further off the track, the Q1's bore/stroke was 23/28 for the front set, and 19½/26 rear. Not compound, but why?? Because the wheel arrangement was 4-6-4-4. ? (still not articulated)

Herb


Edit. Helmut is correct about the valve gear, I think.



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 Posted: Fri Nov 24th, 2017 10:01 pm
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Salada
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I vote that Jose gets the blame (but well done for finding this "thing" ).

The cylinder arrangement is very reminiscent of Hackworth on the Stockton&Darlington. Even the cab is, sort of, vaguely North Eastern. It was once thought that the cylinder axis/piston rod thrust should aim directly at the crank pin centres - hence the inclined cylinders.

The drive appears to be via a jack shaft (the heavy forged bracket hung off the boiler barrel) - again slightly Hackworth-esque.

The real surprise is the valve travel expansion link - at least, that's what it looks like, complete with motion rod linkage again slung off the boiler barrel.

The driving wheels are almost like Boxpox, but clearly aren't.

A homesick (English) backyard mechanical wizard fiddler working in the U.S. in a time-warp that included Walschearts valve gear before it was invented ??

I give up, I've got track switches to design.

Puzzled,   Michael

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 Posted: Fri Nov 24th, 2017 10:18 pm
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Helmut
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I'd say the time of the photo is around 1865, so Walschaert's was around for 20 years, then. A coal-fired loco was not uncommon at that time, so a shotgun ( or stovepipe? ) stack is not improbable for the US. Maybe Jose can give some more explanations.
The loco is very similar to Camden&Amboy's Monster  see fig 8 on the linked page.
The Camden&Amboy seems to have had a preference for weird designs, look at #30.
But one has to admit that they, by adding a leading truck, made the 'John BUll' operational on that rough American trackwork.

Last edited on Fri Nov 24th, 2017 10:33 pm by Helmut



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 Posted: Fri Nov 24th, 2017 11:04 pm
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pipopak
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Damn that Pipopac---
My pleasure...
Jose, practicing sadic.



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 Posted: Mon Nov 27th, 2017 11:29 am
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Nortonville Phil
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It looks like the photo is of the rebuilt version of Camden and Amboy RR.  "Monster" Scroll down on the linked page for some info.Lever Drive Steam Locomotives



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