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Auxilliary 701 Tanks

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Phoenix3(at)cox.net
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Posted: Thu Apr 05, 2007 6:17 pm Post subject: Auxilliary 701 Tanks

Hi,

  

 I would like to get  thoughts on auxilliary tanks for the 701.  I like the idea of extra fuel on  board and can stand the cost, but would like to know what effect the extra fual  weight has on flight characteristics.  I am wondering if the aircraft  becomes at all sluggish in roll, or other effects like that.  Also, if  someone has auxilliary tanks, do you frequentily make use of the extra capacity  and for what mission.  Thanks in advance.

  

 Chuck  Kyle

    [quote][b]

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jetboy

Joined: 22 Jul 2006
Posts: 233

Posted: Thu Apr 05, 2007 8:53 pm Post subject: Re: Auxilliary 701 Tanks

Chuck,

           What you ask depends on whether you are considering a standard powerplant or going outside the design limitations. The ZAC website has the info for calculating the effects of running over MAUW. My own 701 is CZAW built with 85 litres capacity and when operating at full tanks full load there is a considerable handling difference and performance penalty, same as a Cessna etc. although TO distance is not much changed.



I would not operate over the 1100 lbs, if you add the 75 ltrs aux tanks you will just be leaving off your exra baggage / lunch to keep the weight the same. If you need over 1100 lbs you need a bigger plane - CH750 / 801 / 601 XL would do.  I would not expect any roll handling issues as the design is standard with aux tanks and they are still inboard of the wing struts.



If I were starting from kit I would certainly fit the aux tanks, you dont have to use them unless you go on a solo mission and want the extra security of range and efficiency of not having to divert for fuel.



Ralph

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Ralph - CH701 / 2200a

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