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I did most of my ab initio training and learning to be an instructor on
autotow. I'd suggest avoiding reverse pulley because it's difficult for both the tow car driver and pilot to know when to finish the launch. With straight autotow it's easy, stop sufficiently before the end of the runway that you can drive forward and lay the cable out. Another issue is cross winds. The cable will drift downwind and looking at Ronan on Google Earth there are fields with irrigation equipment there. The farmers will take a dim view of the launch cable being dragged through their irrigation kit. Chris At 15:14 28 April 2018, Paul T wrote: Some useful links. I was a member of a club that did straight reverse pulley autotow off grass, just a pulley on a rotating shackle on a chain staked into the grass, and we used to launch a 22M Kestrel with that system. You have to be carefull with initial rotation as acceleration is not as fast as a winch - using a 2:1 and 3:1 pulley system might help with that. http://www.ukmsg.co.uk/wp-content/up.../SG-Dec-2013.- Expedition-pilots-guide-to-aunching.pdf https://www.youtube.com/watch?v=Q0rv1zOmyWg http://www.pas.rochester.edu/~cline/...und-launch.pdf http://www.coloradosoaring.org/think...launching/reve rse_pulley/default.htm |
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