Kitfox Aircraft Stick and Rudder Stein Air Grove Aircraft TCW Technologies Dynon Avionics AeroLED MGL Avionics Leading Edge Airfoils Desser EarthX Batteries Garmin G3X Touch
Results 1 to 9 of 9

Thread: Can I fit SS7 wings to a Kitfox 5?

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Rooster's Avatar
    Join Date
    Dec 2011
    Location
    Stutterheim, South Africa
    Posts
    145

    Default Re: Can I fit SS7 wings to a Kitfox 5?

    Hello All.
    Thanks so much for the replies!
    Dave S - You have taught me a lot, thanks. I was realising these things and you confirmed it and drew my attention to pertinent issues. With two up, I am still getting it wrong on the flair, as I used to hang the C170 there on the prop with a touch of power and grease a 3-pointer for a 300 foot landing with two up, but I have found that the "touch of power" on a Kitfox gets me ahead of the drag curve again and I end up plonking it down untidily. I am battling to get her close enough to the ground and to the stall to for the neat 3-pointer. Like you say- PRACTICE!
    I am still too afraid to use 2 notches of flap with two up and no baggage, as all those I have spoken to so far have told me that I am likely to not be able to get the tail down and may stick the prop in. I am managing to peg the blue line on approach, as I have slowed the idle down to 750 RPM. I have a Warp Drive at 13 degrees. (she arrived with it). I have been reading the builder's books and he did try 12 degrees and got 2550 RPM static, but he wasn't prepared to cruise slowly. I might try that for a blistering take-off, but I have already got 800fpm climb from my 4000ft asl field on a 25 deg Celsius day. KMach- Thanks. I have a 881 pound empty weight 5. I am going to try and get her on a diet by taking out one of the two fuel pumps, look at doing a new exhaust and changing the carb heat shroud to a little one like the Robinson helicopters have. Then I can move the battery forward and put a smaller one in etc. There are a couple of other things that I can work on as time and money become available.
    My goals are to handle a 350-400 foot ground roll for landing and take-off and I will try to land in our local Lucerne (alfalfa) pastures for tea and a chewing of the fat with my brothers and other friends.
    The bottom line is; Thanks so much guys! I really value the input and I am having fun trying it all out.
    I will be practicing a lot. SAFELY!
    Regards
    Reid

  2. #2
    Super Moderator Av8r3400's Avatar
    Join Date
    Jan 2009
    Location
    Merrill, WI
    Posts
    3,048

    Default Re: Can I fit SS7 wings to a Kitfox 5?

    Where does your center of gravity (cg) fall?

    There should be enough elevator authority to handle full flaps on landing without nosing over. You may need to move some weight around to get that more to the rear.
    Av8r3400
    Kitfox Model IV
    The Mangy Fox
    912UL 105hp Zipper
    YouTube Videos

  3. #3
    Rooster's Avatar
    Join Date
    Dec 2011
    Location
    Stutterheim, South Africa
    Posts
    145

    Default Re: Can I fit SS7 wings to a Kitfox 5?

    Here is the w&B.

    I want to go up and practice at a constant altitude and really feel her before I bring it back towards the ground.
    When we went to fetch her and fly her the 500 miles home, we felt as though the tail was going to drop out at short finals, but I suspect that we were just too unfamiliar with the type. (both myself and my test pilot pal had not flown one before.).

    This was at loaded baggage and two adults with a good load of fuel (70litres).
    Attached Files Attached Files

  4. #4
    Senior Member jiott's Avatar
    Join Date
    Jun 2010
    Location
    Portland, OR
    Posts
    2,977

    Default Re: Can I fit SS7 wings to a Kitfox 5?

    On my SS7 I readjusted the horizontal trim ballscrew to give more nose-up range (less nose-down). The readjustment used essentially to the bottom of the slot in the tail covers. This gave me enough nose up trim for full flap landings, but still requires some back stick elevator pressure. There is plenty of elevator authority for this. I can't say if its the same on a model 5, but suspect it is.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •