Others Who Have Found Their Way Here

The Purpose Of This Blog

This blog has been started to try and bring together as much information as possible on the alloy engine pre-unit Triumphs.
From the early GP500 through to the last Tiger 100s and Trophies, including the low production exotica that was also produced.
Any comments, corrections or stuff for inclusion will be gratefully received.

Please contact britishironworks(at)aol(dot)com

Jonnies Triumphs

Sunday, 21 July 2013

Tiger 100 Motor Cycling Road Test April 1957



Interesting to note the Delta Head option being discussed and the drop of 11 MPH in the top speed compared to 1955. Thanks to David Hernandez for this test.

Friday, 19 July 2013

1957 T100RR

Reading Pa, 1957

Carl Williamson 1957

Daytona
Thanks to Carl for these classic period photos

Sunday, 14 July 2013

1951 Triumph TR5 Trophy



Spotted at a local Vintage Club show during the week, a '51 Trophy. 1 of  783 built for that year.


1951 saw the Tiger 100 alloy head and barrels fitted rather than the square "generator"  top end as fitted to the GP 500s. Also note the front engine plate arrangement, the down tube stops short and the "plates" are in fact a box section fabrication, this allows the dynamo to be brought forward reducing the wheelbase to 53 inches, a reduction of 2" over the 5T Speed Twin of the day.


1951 saw the introduction of the push and twist, Ceandes type filler to oil tank, replacing the previous screw on type.


The engine number shows it as early in the model year, from Engine Number 13224NA the spoked wheel symbol to denote ramped cams was used, this motor does not have that.

Friday, 12 July 2013

Tiger 100 Motor Cycling Road Test 21st July 1955


Thanks to David Hern├índez

Tested in 1955 and fitted with the Factory Race Kit and a close ratio box, top speed in 3rd,
108 MPH and 116 in fourth! Although this bike must have been a "road test special", it would be interesting to see contemporary road tests from other magazines to compare results.

Sunday, 7 July 2013

Triumph GP 500




Pics from Rene in Oz 
Rene sent these photos of Pete Dunster's GP 500, still being campaigned hard in Australian Vintage Racing. 

Monday, 1 July 2013

1957 T100R Motor

 REBUILT BY KIETH MARTIN AND TEAM AT BIG D CYCLE, DALLAS






Tiger 100 Race Kit, Factory Fitting Guide


Thanks to Steve in Oz for the opportunity to post this

The bar above the header picture links to other pages on the site. The full version of this book is there to view.