Model Engineer - 4643

I dette nummeret

Rodney Oldfield completes his Middleton double beam engine by finishing off the valve gear, adding a set of stem pipes and cutting a set of gaskets.Hotspur connects up Wenford’s crosshead pump to her newly installed water tanks. Martin Gearing shows how his ‘cutter buttons’ can be used to create a profile tool for cutting involute gears. Mark Smithers follows the restoration of Baldwin ’10-12-D’ narrow gauge locomotive 1058. Noel Shelley reminds readers that smoke issuing forth from electric apparatus is generally a bad sign and suggests the likely causes and what can be done to prevent it. Richard Castle adds the valve gear and various other ancillaries to his Bolton triple expansion marine engine to complete the build.Ron Fitzgerald shows how Watt’s addition of a separate condenser to Newcomen’s engine led to a significant increase in efficiency. Nick Feast installs his displacement lubricator and oil tank into his 3½ inch gauge Southern Q1 locomotive. David Haythornthwaite adds the water pump to his one inch scale Model Engineer beam engine. Duncan Webster analyses the rippling tractive effort of multi-cylinder steam locomotives. Luker machines the main wheels and axles for his 5 inch gauge American outline 4-4-0 freelance locomotive, Wahya.