NOVEMBER 23rd, 1922. Page 768
The Olympia Show.
P. & P.
There are at least as many details of interest on the P. & P. as on any other machine in Olympia. Briefly, it may be summarised as an attempt, and apparently a successful one, to make an absolutely silent and completely protected motor cycle.
A Barr and Stroud engine and a Sturmey-Archer gear box are employed, but otherwise the design duplex frame, revolving back axle, etc., is quite original.
Side-shields may be fitted entirely hiding the engine, and mudguarding, saddle suspension and riding position have received careful attention.
Internal expanding brakes are fitted front and rear.
The saddle has a very wide range of up and down movement, and is set well forward in order to secure good weight distribution.
It is not often that British motor cyclists have the opportunity of studying Italian motor cycle design, but this year they will have a chance of inspecting the Bianchi. which is the production of one of the leading motor car manufacturers of that country.
Unit construction is a feature of this interesting machine; there are two models, a 600 c.c. twin and a 498 c.c. single-cylinder.
By no means an entirely new and untried design, the Cykelaid motor attachments for pedal cycles with reappear at Olympia in a revised form. The complete unit consists of a specially built front wheel and spring forks, carrying a 55x56 mm. two-stroke engine, the whole to replace the forks and front wheel of an ordinary pedal cycle. Transmission is by chain, and a cork insert clutch is provided.
There is a good deal to be said in favour of this method of motorising a pedal cycle. It is simple and strong enough to stand its own stresses; steering is good; and the rider's clothing does not come into contact with the mechanism.
The makers of the Metro-Tyler are among those firms who cater for all classes of riders. In the case of the "All-Black Baby," they have designed a machine suitable for the beginner, which can be bought cheaply, is of simple design, and yet will go almost anywhere. A two-speed gear can be added at a small cost, and it can also be obtained as a sports model. All the engines are fitted with an aluminium radiator on the top of the cylinder.
The more advanced rider is catered for by the 348 c.c. Blackburne-engined machine, which can be had with either the overhead valve or side valve engine. The all-enclosed Metro-Tyler two-stroke is still retained, as well as the 698 c.c. Blackburne-engined twin.
The Motor Cycle, November 1922
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