div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: History19781978-06 - ChopperOnly will be too slow a response Yo-yos One of my favourite manoeuvres is to slow the model deliberately while flying downwind As its air- speed src=https:reader033fdocumentsusreader033viewer20220422055ea6bf94837d46184748475bhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: History19781978-06 - ChopperOnly will be too slow a response Yo-yos One of my favourite manoeuvres is to slow the model deliberately while flying downwind As its air- speed src=https:reader033fdocumentsusreader033viewer20220422055ea6bf94837d46184748475bhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: History19781978-06 - ChopperOnly will be too slow a response Yo-yos One of my favourite manoeuvres is to slow the model deliberately while flying downwind As its air- speed src=https:reader033fdocumentsusreader033viewer20220422055ea6bf94837d46184748475bhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdiv