Please forward this error screen to 69. Please forward this error screen to 69. Trojan ‘Gearless Cycle Outboard’ Mini-Motor The Speed dating raleigh Motor was one of the best-known of the British clip-on engines, and was introduced in Great Britain in 1949. The Mini Motor was one of the best-known of the British clip-on engines, and was introduced in Great Britain in 1949.
Trojan’s first prototype vehicle was built in 1910, a 2-seater car with a 4 cylinder 2-stroke engine mounted between the seats. They continued their commercial vehicle range: you can see, below, the Trojans available in 1950 when the Minimotor was also being produced. Five models were produced in Britain at Trojan’s Croydon factory, from the Mark I in 1949 to the Mark V in 1955. The improvement for 1951 was a decompressor added to the cylinder head to aid both starting and stopping. The engine sat above the bicycle rear wheel, which it drove with a friction-roller on the left-hand end of the crankshaft.
On the right, there was a Wipac flywheel magneto, and between this and the roller, a crankcase with bobweight flywheel and a horizontal iron barrel. An alloy head closed this, and the capacity was 49. 9 cc for the conventional two stroke unit. The petrol tank went over the engine with the number plate fitted behind it.
A means of lifting the roller clear of the tyre was provided . The unit could drive a bicycle at 30 mph, which was probably as fast as you’d want to go on a normal cycle under normal road conditions. In a postwar Britain with a shortage of new vehicles, motorists found them ideal for short trips, commuting to the station or the office, or to the shops to fill up the front basket. Some were even fitted to tandems, where they proved equal to the task of hauling two people along at 20mph. I’ve owned over a dozen of Minimotors over the past 25 years.
I’ve never been particularly attached to them as they were always common, but latterly I’ve started to like them again. The bare engine pictured here is a recent acquisition, purportedly unused. Once I find a tank and fittings, I’ll put it onto a cycle. The Trojan Moped was an experimental model, with an uprated Elswick frame similar in concept to Cyclemaster’s Norman Cyclemate. 1955 killed off British cyclemotors and Trojan wisely did not put it into production.