Furry muff.
Even so, considering the weight advantage of aluminium over steel (and the pool of reckless talent) it's still surprising to me that there weren't any "ally" bikes in the Fifties and Sixties.
Weight advantage is relative anyway. Cut two comparable bikes apart today, one aluminium and one steel and see the wall thickness disparity.
Are you saying an adequately strong aluminium bike, built with what was available in the Fifties would have weighed a similar amount to steel?
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Furry muff.
Even so, considering the weight advantage of aluminium over steel (and the pool of reckless talent) it's still surprising to me that there weren't any "ally" bikes in the Fifties and Sixties.