|
'Rusty & Dusty'
McDonald Truss Railway Bridge
assembled!
all timber structure with bronze truss rods & track supports!
(1:48, 1/4":foot, O scale or On30)
This interesting bridge was recently completed in the workshops of our 'Bulahdelah Alum & Timber Company'. After numerous requests for more structures, we have developed an attractive and versatile truss bridge, packed with interesting features.
Our lightweight 1:48 scale truss bridge offers amazing strength and rigidity and uses over 100 separate timber beams. These (18" x 6" proto) timbers are laminated together to act under compression and are complimented by strategically placed truss rods under tension (as per prototype). After lightly distressing and weathering the timber, we have applied more than 100 heavy duty Nut/Bolt/Washer details to give than finishing touch!
Use it as a standard gauge or narrow gauge (On30) railway bridge as this model is supplied with two heavy (1' x 1' proto) track support beams!
See our Ebay Store 'Steam in the Bush' for the kit of this bridge, mining equipment, skeleton log cars & disconnects, On30 and HO steam locomotives, our sensational dress-up kits for your On30 Shay, Climax and Porters, flat car loads and many more items, all at Buy it Now!
Truss Bridge Dimensions:
Also supplied (not fixed so you can set to your gauge):
- 1' x 1' x 56' long (proto) hardwood track support beams: space for O scale standard or On30 narrow gauge
Note: log train and track photographed are not included but these items are available separately from our Store .
Prototype History:
Our 1:48, O scale McDonald Truss Bridge is a shorter span version of the prototype across Cox's River at McKanes Falls near Lithgow in New South Wales. Completed in 1893, the Heritage Listed structure is one of the oldest timber bridges in NSW and is significant as a surviving example of one of the largest of the type ever constructed in NSW.
The significant 1880's design by John A McDonald was developed to solve maintenance problems of earlier Public Works Department designs which used single, heavy timbers. Replacement of individual hewn timbers was problematic without demolishing the bridge!
Prototype McDonald Truss advantages:
-
easy to build and maintain
-
based on a proven 400 year old European design
-
used readily available heavy sawn timber beams
-
easy replacement of individual timber beams
-
high load capacity
-
three possible span lengths
-
see our kit for alternative span lengths
See our Ebay Store 'Steam in the Bush' for more structure kits, mining equipment, skeleton log cars & disconnects, On30 and HO steam locomotives, our sensational dress-up kits for your On30 Shay, Climax and Porters, flat car loads and many more items, all at Buy it Now! | 
Track up to 10 items on this computer in 
)
)
