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The Allwyrm Limited Slip Differential

An improved Torsen T1 differential invented by Alan Wenbourne.

Triple Differential Drive Steer Transmission

Alan Wenbourne describes his model of the Merritt-Brown TN.12 transmission, as used in the Churchill, Centaur, Cromwell and Comet battle tanks.

Racing Obstacle Game

Avoid obstacles as you steer your accelerating car along a moving track in Brian Leach’s game of skill!

Pegasus Rolling Lift Bascule Bridge

Alan Wenbourne models the Scherzer rolling bridge which spans part of the Caen Canal in Normandy, France.

Leonardo Da Vinci’s Self-Powered Cart

Was this the first car? Here is Alan Wenbourne’s interpretation of a fascinating contraption sketched out by Leonardo da Vinci circa 1478.

The Golden Arrow Land Speed Record Car

Frank Paine builds a 1:15 scale model of the ‘Irving-Napier Special’ racer which regained the world land speed record from the USA in March 1929 on Daytona Beach, Florida.

The Theory of Meccano Gears: Part 3 — Bevel Gears

Alan Wenbourne presents and shares his experience and understanding of Meccano gears in this series of articles. In this part he applies gear theory and practice to the Meccano bevel gears, parts 30, 30a and 30c.

The Theory of Meccano Gears: Part 2 — Helical Gears

Alan Wenbourne presents and shares his experience and understanding of Meccano gears in this series of articles. In this part he applies gear theory and practice to the Meccano helical gears, parts 211a and 211b, and also discusses the design of Exacto helical gears.

The Theory of Meccano Gears: Part 1 — Spur Gears

Alan Wenbourne presents and shares his experience and understanding of Meccano gears in this series of articles, starting with the basics in applying gear theory and practice to the Meccano range of spur gears.

M4 High-Speed Tractor

A 1:15 scale model of an Allis-Chalmers M4 HST (High Speed Tractor) double differential steered tracked vehicle built by Alan Wenbourne.