Purley Grange (2.5 Gauge)

Overview
Purley Grange was a 4-6-0 Tender locomotive designed by LBSC. It used twin cylinders with slide valves operated by Stephensons valve gear. The valve gear did not give very good events and was therefore redesigned by Don Ashton as described in Engineering in Miniature January 2008.

Drawing Errors
John Baguley noted that on the drawings the blower valve and water gauge screw directly into the backhead and the top feeds screw directly into the boiler barrel which is no longer allowed in current boiler legislation. He also noted that the hornstays are shown as 3/8" wide but should be 5/16" to match the horns.

Also worthy of note is that if the front bogie stretcher is fabricated using brass angle the angle obscures the bottom cylinder mounting holes in the frames.