I enjoyed the article Wright Power (Flight International, 7-13 January), but where would the Wright brothers have obtained 25.4mm-pitch roller chains? Surely 1in would have sufficed? Regarding the 43 x 32mm rear spares would it not have been more convenient to use 15/8 x 11/4in? or was it 13/4 x 11/4in?
Paul Whitelegg Llanbedr, UK
Editor's note: Flight International's policy is to use metric measurements, with some exceptions, with a conversion at first mention. But 25.4mm was probably over-precise.
Source: Flight International