Building and Flying Related Boards › miniMax, Hi-Max, and AirBike General Discussions
textailwindsDecember 29, 2018, 10:06pm
Is it worth considering dual elevator cables in the HiMax? I saw the Team MiniMax modification, and thought that if it hasn't been a problem. Then why worry about it.
aeronutDecember 30, 2018, 3:14pm
It depends on your current level of risk comfort with the current elevator control system via boat cable on the elevator. A failure could very likely be fatal.In Great Britain the governing body will not sign off on a single cable system; this is my understanding of their rules. I am not being critical of this. Mr Bugaboo Bruce went to great lengths during his build to put in a push rod control system for the elevator and I would recommend that you review his system. I think that he is to be praised for the detail that he went to during his build.It is up to you.
never surrender; never give-up
radfordcDecember 30, 2018, 8:05pm
There are documented cases of the cables failing. Makes sense to have a redundant system if possible. Or, a more reliable system such as push rods.
beragoobruceDecember 30, 2018, 8:30pm
It is the case that the UK authority insisted on dual elevator cables. Whether you feel comfortable with a single system is a personal 'comfort zone' thing. I didn't like the idea of cable control, so installed a pushrod & torque tube system. This works well and feels very positive in flight.
Thread here FYI:
http://www.lonesomebuzzards.com/cgi-bin/forum/Blah.pl?m-1430015479/s-0/Bruce
(unknown)December 31, 2018, 2:32am
For added redundancy you can install cockpit controlled elevator pitch control with push pull tube, just make sure you install a big enough tab so you can get some flare authority.
(unknown)December 31, 2018, 2:49am
How to land an airplane without aileron or elevator controls.
https://www.youtube.com/watch?v=yqPFfTRn5SotextailwindsDecember 31, 2018, 4:47pm
Thanks to all for your input.