The Evolution Class chassis employs sealed self aligning roller bearings and rubber anti-vibration suspension throughout. The fully independent primary suspension is fairly traditional by design, contained in the cast iron horn guide and acting upon the top of the bespoke steel axle box housing.
The wheels are milled and turned from billet EN8 Steel, so although they look like traditional castings, they are in fact extremely strong solid steel.
The cast iron horn guides are chunkily designed, CNC machined to slot tightly into the frame sides, and then secured by rivet headed bolts made here in house to give the whole thing an authentic and robustly engineered feel. The axleboxes themselves are milled from billet steel, with integrated grease nipple fed pathways, milled in suspension retention cups on the top and they house heavy duty self aligning sealed roller bearings designed to be maintenance free for over 40,000 hours service!
The gearing on the Evolution Class bogie is bespoked to the railway’s needs, and driven through heavy duty multi link silent chains. The whole lot is then encased in gear guards designed to double as oil baths should you wish
