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 2015

Issue Mar 2015

•  Free 32-page supplement: 25 Memorable British Bikes
• Thunderbirds are go! Is this the best 650cc Triumph?
• Savage beauty: Wild New Imp • Old peculiar: OEC oddity
• 'Cammy' Square Four • T160 resurrection
• Arthur Bourne profile • Unrestored Monet Goyon
• Maltese collectors • New Imperial Unit Motor

PLUS:

Buy this issue now

• Next issue on sale: March 6, 2015

Issue 42-03

Issue 42-03
Mar 2015

Where legends come to life

Subscribe and get this issue

Buy it now facebook Sample on-line

Other News

Mortons seeks an Event Planner

Mortons seeks an Event Planner

The company behind some of the UK’s leading motorcycle and motoring events is looking to add an event planner ...

Read More »

Stafford Show Star Guests Announced

Stafford Show Star Guests Announced

YORKSHIRE'S first family of motorcycle racing will be represented at this year's Carole Nash International Classic MotorCycle Show as Nick ...

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:

April issue - Feb 13, 2015

May issue - Mar 13, 2015

Book advertising here

Next Issue Out:

March 6, 2015