Re: Eight wheel Caboose on C&Sng?

Posted by Jim Courtney on
URL: http://c-sng-discussion-forum.254.s1.nabble.com/Eight-wheel-Caboose-on-C-Sng-tp488p1933.html

Derrell,

With reference to the photo of 313 in Blackhawk:

"I also want to point out how the brake cylinder is mounted on this pre-rebuilt C&S "waycar". And that there are other unexplained bolts near the bottom edge of the body. We really don't know what the frame gear looks like do we? We assume it is much like the later cars and very different from what we see on 306, but is it?" 



This same photo, published in the Grandt Narrow Gauge Pictorial that you co-authored, showed the underframe detail a lot better than in the one you posted above.  To my eye, it appears to be the original South Park underframe, with the horizontal equalizing bar with its center bracket and 2 large coil springs removed to allow for addition of air brakes.

It appears that 2 short queen posts have been added to the intermediate sills, that have ends with a triangular section, sort of like the short queen posts of the D&RGW 700-800 series drop bottom gons. Some sort of truss rod seems to run from car body/frame, over queen posts and back to car body/frame, near the journal pedestals.  

The brake cylinder mounting board/bracket is in the same place as the later, modern mount, but is different, with a shorter board.  The two bolt heads vs NBW likely secure the brake cylinder mount to the car body/frame, reminiscent of the two little bolts on the St Charles 1898 and 1899 boxcars that secured the cylinder to the frame. Also note the shallow little retaining bracket that supports the brake lever attached to the clevis on the cylinder piston.

I'm convinced that to model any DL&G / C&S caboose with air brakes, prior to the 1908 rebuilding program, a modified South Park underframe is required.

BTW, Shapeways is now printing original DSP&P sideframes in Sn3, designed for PBL needle point wheel sets: http://www.shapeways.com/product/25UZMCDDX/dsp-p-waycar-running-gear-sn3?li=productGroup&optionId=40675954


(Photo is of On3 printing)

I've just received 2 sets of the Sn3 parts and they are beautiful--they even include wood beam brake beams with brake shoes for the earlier cabooses, like the car at Hancock in the opening photo of your post.  Wheel base is right on at 9 feet.  They will require an new scratchbuilt underframe, likely styrene, but that will only reduce weight.  I plan to use one set on my Overland #73 waycar sans cupola to model an early South Park waycar to go with my Berlyn Mason Bogie.  I plan to use the other set, maybe more, modified as I've described above, to model 313 as in the photo or 306 with airbakes in 1909, but before receiving its new frame.

Also note that the artist that designed the SouthPark underframe also has Cooke domes (for both 2-6-0 and 2-8-0 boilers) printed in HOn3 and On3.  If he can be persuaded to print them in Sn3, then Cooke 2-8-0s c1900-1910 could be built from Railmaster kits.  He also has one piece Litchfield DSP&P (Type-A) trucks in On3 and HOn3 that look intiguing--not everyone likes to solder everything!

See: http://www.shapeways.com/designer/oahu_railway