The way we were: August 1913

Published: 06:31AM Jul 2nd, 2013
By: Richard Rosenthal
In an exclusive feature published on August 7 The Motor Cycle detailed a full description of Triumph’s first twin-cylinder motorcycle engine...
The way we were: August 1913

For months rumours suggested development of the side valve 4½hp parallel twin was under way at the company’s Priory Street, Coventry works. The engine was designed to fit transversely across the frame while a single skew gear driven camshaft running in line with the frame operated all four valves – exhaust to front and inlet to rear – from pairs of lobes at either end. The magneto drive was by an adjustable skew and following Triumph’s usual practice, ball bearings were used throughout the engine with the exception of the little end bushes.

Although air-cooled, much of the design followed car type practice including the horizontally split crankcase with crankshaft mounted on its main bearings to the upper half with the flywheel external to the engine. The Motor Cycle writer pointed out that for easy access the complete motorcycle could be turned upside down, a feat much harder to accomplish with a car.

Late summer was and still is the season for unveiling new designs and making the most of the time of year Blumfield and James announced new V-twin engines in readiness for the autumn show season.

Responses to “The way we were: August 1913”

Current Issue: Mar 2016

Issue Mar 2016

Peak of the pre-units
Sturdy and strapping: Sunbeam Model 9A
Rise and shine
: Sparkling BSA B32 competition - restored and ridden
Plus: New Hudson Model 3; VMCC president interviewed; 1962 Ulster Grand Prix; Cotton Blackburne; Arturo Magni tribute

PLUS:

Buy this issue now

• Next issue on sale: March 4, 2016

Issue 43-3

Issue 43-3
Mar 2016

Where legends come to life

Subscribe and get this issue

Buy it now facebook Sample on-line

Other News

Off to a great start

Off to a great start

The Carole Nash Classic Bike Guide Winter Classic is the first big motorcycle show of the year and, for many ...

Read More »

Friends of the National Motorcycle Museum 2016 activities announced

Friends of the National Motorcycle Museum 2016 activities announced

The National Motorcycle Museum in Solihull, Birmingham, has announced this year’s roster of events for those enrolled in its Friend ...

Read More »

View all...

Advertisements

Related magazines:

The Classic MotorCycle MSL Magazine Twist & Go magazine

 

Use our handy tool to find your nearest stockist!
Find your nearest Stockist

Advertising Deadline:

Apr 2016: 12 Feb 2015
May 2016: 11 Mar 2015

Book advertising here

Next Issue Out:

March 4, 2016