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Old 29th Nov 2015, 18:28
  #52 (permalink)  
pulse1
 
Join Date: Aug 2000
Location: uk
Posts: 1,778
Received 19 Likes on 10 Posts
I watched a Prefect glider at Dunstable carry out a circuit with a tyre on the tail plane. I never realised it was to improve the performance.
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