When I spotted two scrap Westwood ride-on lawnmowers for sale locally I acquired them intending to recover pulleys, bearings, drive belts and engines etc. for use in other projects. These older Westwood tractors are heavily built using sheet steel throughout. The engines were Briggs & Stratton. I was horrified to discover on one engine that part of the crankshaft had been sawn off to recover the cast iron pulley. However, the pulley was found amongst other parts still firmly attached to the piece of crankshaft! Photo 1.
After further examination I concluded that it was worthwhile refurbishing the smaller unit, the S800, photo 2. I managed to purchase an 8 hp Briggs & Stratton engine which only needed a de-coke, the valves regrinding and a new set of piston rings. This engine has both a pull start and electric start which is a useful feature if the battery is flat photo 3.
Where the paintwork fails, surface rust quickly appears especially where panels are bolted together. Nuts and bolts on these American machines are all imperial so I had to dig out the appropriate and seldom-used spanners. An electric impact driver proved very useful and avoided shearing rusty examples, photos 4 & 5.
These older models were fitted with expensive and well-made gearboxes having five forward and one reverse gear and incorporating a differential. Later models like the Lawnflite use a simple adjustable double pulley which provides for speed changes. A differential is fitted between the rear wheels and uses a separate forward, neutral and reverse control lever, photo 6.
Esta historia es de la edición March 2020 de Model Engineers' Workshop.
Comience su prueba gratuita de Magzter GOLD de 7 días para acceder a miles de historias premium seleccionadas y a más de 9,000 revistas y periódicos.
Ya eres suscriptor ? Conectar
Esta historia es de la edición March 2020 de Model Engineers' Workshop.
Comience su prueba gratuita de Magzter GOLD de 7 días para acceder a miles de historias premium seleccionadas y a más de 9,000 revistas y periódicos.
Ya eres suscriptor? Conectar
Readers' Workshops - Patrick Cubbon
Patrick Cubbon describes his workshops – a portable one from 1963 and the current accommodation
Desktop Gear Hobbing
Toby Kinsey has designed this fascinating piece of gearmaking equipment
The John Stevenson Trophy 2020
Many readers and forum members will remember John Stevenson, a contributor to MEW but best known for his larger-than life presence on the Model Engineer forum.
From the Archives: Twist drill Sharpening by the Four Facet Method
Giles Parkes, MEW Issue 64, February/March 2000
Dividing on the Warco 220 Lathe
Peter Shaw describes a mandrel dividing attachment for this popular lathe that can be adapted to fit many other benchtop machines
Choosing Steels
Stub Mandrel offers some advice on choosing the right steel for the job
A Storage Story
Robin King shares the lessons learned from his experience of workshop moves
A Simple Drill Grinding Aid
A newcomer to our hobby was having trouble sharpening drills, so Howard Lewis made a simple aid for him
Yet Another Bodge-Up!
Peter Shaw finds a use for some aged homebrew slot drills.
Workshop Press Tooling Part 2
Will Doggett makes a set of tooling for his press tool described starting in issue 285