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• Formula One car
  ...vertheless through engineering on the limit and the use of such devices as pneumatic valves, modern F1 engines have revved up to over 18,000 rpm since approxima ...conforms to the road surface as closely as possible). However, since 2006, tire changes have been re-instated after a dramatic and highly political [[Unite
  23 KB (3,769 words) - 14:04, 27 September 2009
• Bicycle
  ...ycles''. In 1888, Scotsman [[John Boyd Dunlop]] introduced the [[pneumatic tire]], which soon became universal. Soon after, the rear [[freewheel]] was deve ...also makes disc brakes a necessity, as rim brakes simply cannot straddle a tire that wide.
  53 KB (8,173 words) - 09:32, 25 September 2009

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