Outside of track. Links are made of 1 inch thick material. Horseshoe keepers are 1/2 inch material. Track castings are two piece held together with the 1 inch diameter bolts. Note the condition of the 97 year old cotter pins.
Front cross member with spring boiler mount. Two large bolts are track tension adjusters.
Track pad. Missing its 5 inch oak blocks. Pads are each 7 inches by 14 inches by 5 inches thick with grain standing on end. The 4 5/8 bolts are to fasten the blocks in place. The 4 outer lugs are to attach the rotatable grouser bars as shown in the factory field test photos. Parking brake drum on left.
Some of the factory grey paint.
Shows the massive size of the flywheel and crank being put away in our shop for the winter. (Nov 2005)
This rock I suspect was the one which brought the machine to the end of her working life. Still jammed solid after 75 years.
During field trials at Grantham England the machine had a bad tendency to rear up as the water in the boiler sloshed backward when climbing up hill. The rear axle was first moved 10 inches back to correct this nasty habit. Then both front and rear axles were moved a further 3 inches back. This improved the balance going up hill however one wonders about downhill.
The massive rear axle housing. Someone cut a hole to see what was inside. Brass collar on left is differential lock to operate winch.
Top of track supports itself by design. Links bottom out on each other when the minimum curve is reached. This 1 inch gap above the support roller shows in the 1927 photo taken in New Westminster on the machine's return from the Yukon.
The rear tank water filler has the name cast into the side. I would suspect that the pattern makers were so impressed with the machine's size that it was named the Hornsby Mammoth by the workers.
Close up of the name, rather crude.
A number of models of this famous tractor have been built. One was built in the US and 4 in England. This photo is a 3 inch scale machine owned by Steve Baldock and shown at the Lincoln Steam Rally. Steve spent over 7000 man hours building this beautiful model.