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The engine reverts to ‘standard’ by replacement of the standard CC sump. Those days of satisfaction have melted into oblivion and all that is left is a lot of frustrated old farts that look back and remember when….!!!!’ The Smedley twin plug, twin magneto engine being being tested on the Repco Research dyno in November 1963. The horsepower was up, but more importantly the torque figures were so much improved. We were met by Frank Hallam who was very dubious about the whole thing, but some four hours later he confessed that our 2.5 Climax had shown better figures than any previous Climax including the fashionable 2.7 litre. ‘The final test of the engine was to take it all to Melbourne and place it on Repco’s dyno at Dandenong to test the result.

#LWL PATCH PANEL VISIO SHAPE FULL#

The big advantage I had was having full use of the family workshop (Bedford Machine Tools) where I was able to produce any part required.’ ‘Living in Tasmania and being able to carry out this work undercover of our opposition, based on the Australian mainland, was an advantage, I and my young family were living at Symmons Plains in those days and my workshop was a converted coachouse close to the main homestead where all the chassis work was carried out. ‘The initial effort seemed rewarding with a test day at Symmons Plains, the result was pleasing and being able to alter each magneto individually, the differences were very noticeable.’ Obviously there are easier methods today, but 50 years ago we were still looking in any way we could, without the aid of computers, only perhaps with a slide rule and something to write on, and a lot of time was lost to mistakes, but on the occasion when you were successful it was nice being 10ft tall….’ ‘1963 saw the end of alcohol fuel for our cars, reverting back to 100 octane caused a few problems leading to the idea of a cleaner more efficient fuel burn. A total new drive was made up for a second maggy from the crankshaft protruding from the front of the sump which allowed comfortable room within the confines of the T55 chassis, and the head modified to accommodate a second plug.’ Two of these more robust spark producers set up properly must be the answer.

I preferred to stick with a man’s toy, the magneto. ‘Firstly, in 1963 the fad was to re-sleeve the 2.5 Climax to 2.7 litres chasing more hosepower but ‘bigger holes’ was the American way, I was sure a better alternative could be found.įrank Hallam at Repco Research had been playing around with a twin plug head for one of Brabham’s engines, using two distributors driven from the rear of each cam bank and couldn’t make it work through an inaccurate spark which was put down to windup in the camshafts in the high rev range. John Youl cruises thru the Warwick Farm paddock in 1963, Cooper T55 Climax (Smedley)

Cooper T40 Bristol T… on 60th Anniversary of Jack…

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