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Thread: Need to change turning radius for Jens B. Kristensen's Vickers Vernon

  1. #1
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    Default Need to change turning radius for Jens B. Kristensen's Vickers Vernon

    Hello,

    I have installed Jens B. Kristensen vernon, file vernon_10.zip, available in this site.

    I have given it an Autopilot, and brakes. Now I want to change its turning radius to as tight as possible. It is too wide.

    Can anyone help please?

    I also intend to do a repaint or two of the aircraft.


    Nick

  2. #2
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    Are you using differential braking to make your turns? Add this info above your [contact points]:


    //0 Class <0=none,1=wheel, 2=scrape, 3=float>
    //1 Longitudinal Position (feet)
    //2 Lateral Position (feet)
    //3 Vertical Position (feet)
    //4 Impact Damage Threshold (Feet Per Minute)
    //5 Brake Map (0=None, 1=Left, 2=Right)
    //6 Wheel Radius (feet)
    //7 Steer Angle (degrees)
    //8 Static Compression (feet) (0 if rigid)
    //9 Max/Static Compression Ratio
    //10 Damping Ratio (0=Undamped, 1=Critically Damped)
    //11 Extension Time (seconds)
    //12 Retraction Time (seconds)
    //13 Sound Type
    //14 Airspeed limit for retraction (KIAS)
    //15 Airspeed that gear gets damage at (KIAS)

    The one marked in red is the number you want to adjust .
    Mr Zippy Sent from my keyboard using "Whackamole", NudgeAKey + 2 Fingers

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  3. #3
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    Default

    Just to clarify Mr. Zippy's advice, here's an example of the figure you need to edit on line 1 of the contact points:

    point.0= 1, 20.948, 0.000, -11.100, 1181, 0, 1.000, 30.00, 0.250, 4.00, 1.00, 6.00, 6.00, 0, 180.0, 250.0
    Tim Wright "The older I get, the better I was..."
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  4. #4
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    Thanks to both,

    Will try what both of you advised and will get back to you.

    Nick

  5. #5

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    That line indicates that it has a nose wheel (ie: 20.948). But since it is a tail dragger the number would then have to be Negative (ie: -20.948). For tail wheel you CAN make steering ratio 90.000 as opposed to 'only' 30.000.

    The other thing is that the position of the main gear (ie: Lateral pos in cnt pts) will make a difference. If the front gear is too far forward or the tail wheel is too far to the rear that will also make a difference. I am downloading and will work on it to where it does donuts if you wish. Later.
    Chuck B
    Napamule
    i7 2600K @ 3.4 Ghz (Turbo-Boost to 3.877 Ghz), Asus P8H67 Pro, Super Talent 8 Gb DDR3/1333 Dual Channel, XFX Radeon R7-360B 2Gb DDR5, Corsair 650 W PSU, Dell 23 in (2048x1152), Windows7 Pro 64 bit, MS Sidewinder Precision 2 Joy, Logitech K-360 wireless KB & Mouse, Targus PAUK10U USB Keypad for Throttle (F1 to F4)/Spoiler/Tailhook/Wing Fold/Pitch Trim/Parking Brake/Snap to 2D Panel/View Change. Installed on 250 Gb (D. FS9 and FSX Acceleration (locked at 30 FPS).

  6. #6

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    Well...it won't do doughnuts but it turns now. Best turning is at between 2 and 5 kts. It's a heavy 2 engine taildragger. Too much power (ie: 10 kts) and it wants to TAKE OFF, not turn. OK? OK!

    [contact_points]
    point.0=1, -30.360, 0.000, -2.000, 1500.000, 0, 0.5, 60.0, 0.100, 2.5, 1.000, 0.0, 0.0, 0, 0.0, 0.0
    point.1=1, 0.900, -5.300, -6.550, 1600.000, 1, 1.6, 0.0, 0.404, 2.5, 0.686, 0.0, 0.0, 2, 0.0, 0.0
    point.2=1, 0.900, 5.300, -6.550, 1600.000, 2, 1.6, 0.0, 0.404, 2.5, 0.682, 0.0, 0.0, 3, 0.0, 0.0
    point.3=2, 8.100, 0.010, -3.200, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 5, 0.0, 0.0
    point.4=2, -4.000, -34.500, -1.000, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 5, 0.0, 0.0
    point.5=2, -4.000, 34.500, -1.000, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 6, 0.0, 0.0
    point.6=2, -4.000, -34.500, 9.400, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 5, 0.0, 0.0
    point.7=2, -4.000, 34.500, 9.400, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 6, 0.0, 0.0
    point.8=2, -34.000, 0.000, 5.000, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 9, 0.0, 0.0
    static_pitch=6.9965 //degrees (pitch when loaded on ground)
    static_cg_height=6.155 //feet, altitude of CG when at rest on the ground
    //
    [fuel]
    Center1 = 2.000, 0.000, 7.900, 8.000, 0.000
    Center2 = -3.000, 0.000, -2.000, 150.000, 0.000
    //Center2 = 0.000, 0.000, -2.000, 150.000, 0.000
    fuel_type = 1
    number_of_tank_selectors = 1
    electric_pump=0
    //
    [brakes]
    parking_brake = 0 //Parking brake available
    toe_brakes_scale=0.650 //o=0.0 //Brake scalar

    A little brake is ok. You don't need differential braking. You need to do s.l.o.w turning. Oh and I moved the Center2 gas tank back because with even the slightest braking it pitched forward onto it's nose. It (moving fuel tank) does not change the handling at all-flys good. I landed it at 42 kts. Enjoy.
    Chuck B
    Napamule
    i7 2600K @ 3.4 Ghz (Turbo-Boost to 3.877 Ghz), Asus P8H67 Pro, Super Talent 8 Gb DDR3/1333 Dual Channel, XFX Radeon R7-360B 2Gb DDR5, Corsair 650 W PSU, Dell 23 in (2048x1152), Windows7 Pro 64 bit, MS Sidewinder Precision 2 Joy, Logitech K-360 wireless KB & Mouse, Targus PAUK10U USB Keypad for Throttle (F1 to F4)/Spoiler/Tailhook/Wing Fold/Pitch Trim/Parking Brake/Snap to 2D Panel/View Change. Installed on 250 Gb (D. FS9 and FSX Acceleration (locked at 30 FPS).

  7. #7
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    Mr Zippy,

    I incorporated your text and now I have this:

    //0 Class <0=none,1=wheel, 2=scrape, 3=float>
    //1 Longitudinal Position (feet)
    //2 Lateral Position (feet)
    //3 Vertical Position (feet)
    //4 Impact Damage Threshold (Feet Per Minute)
    //5 Brake Map (0=None, 1=Left, 2=Right)
    //6 Wheel Radius (feet)
    //7 Steer Angle (degrees) ;;; marked in red
    //8 Static Compression (feet) (0 if rigid)
    //9 Max/Static Compression Ratio
    //10 Damping Ratio (0=Undamped, 1=Critically Damped)
    //11 Extension Time (seconds)
    //12 Retraction Time (seconds)
    //13 Sound Type
    //14 Airspeed limit for retraction (KIAS)
    //15 Airspeed that gear gets damage at (KIAS)
    ;;;The one marked in red is the number you want to adjust .





    [contact_points]
    point.0=1, -30.360, 0.000, -2.000, 1500.000, 0, 0.5, 60.0, 0.100, 2.5, 1.000, 0.0, 0.0, 0, 0.0, 0.0
    point.1=1, 0.900, -5.300, -6.550, 1600.000, 1, 1.6, 0.0, 0.404, 2.5, 0.686, 0.0, 0.0, 2, 0.0, 0.0
    point.2=1, 0.900, 5.300, -6.550, 1600.000, 2, 1.6, 0.0, 0.404, 2.5, 0.682, 0.0, 0.0, 3, 0.0, 0.0
    point.3=2, 8.100, 0.010, -3.200, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 5, 0.0, 0.0
    point.4=2, -4.000, -34.500, -1.000, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 5, 0.0, 0.0
    point.5=2, -4.000, 34.500, -1.000, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 6, 0.0, 0.0
    point.6=2, -4.000, -34.500, 9.400, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 5, 0.0, 0.0
    ;;;;point.7=2, -4.000, 34.500, 9.400, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 6, 0.0, 0.0

    point.7=5, -4.000, 34.500, 9.400, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 6, 0.0, 0.0

    point.8=2, -34.000, 0.000, 5.000, 800.000, 0, 0.0, 0.0, 0.000, 0.0, 0.000, 0.0, 0.0, 9, 0.0, 0.0
    static_pitch=6.9965 //degrees (pitch when loaded on ground)
    static_cg_height=6.155 //feet, altitude of CG when at rest on the ground
    //



    I flew the a/c and landed and it seemed to turn ok on the ground when taxying ...
    I changed to this:

    point.7=5

    Does the 7 just above affect the turning radius when taxying??

    I want to know if the line above affects the Turning radius ON THE GROUND. If not, which entry affects turning radius on the ground?

    Napamule: Many thanks.

    I will soon be starting a repaint.


    Nick
    Last edited by asos; 03-07-2018 at 04:07 PM.

  8. #8
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    Nick, you is a bit confused, me thinks!

    //0 Class <0=none,1=wheel, 2=scrape, 3=float>
    //1 Longitudinal Position (feet)
    //2 Lateral Position (feet)
    //3 Vertical Position (feet)
    //4 Impact Damage Threshold (Feet Per Minute)
    //5 Brake Map (0=None, 1=Left, 2=Right)
    //6 Wheel Radius (feet)
    //7 Steer Angle (degrees)
    //8 Static Compression (feet) (0 if rigid)
    //9 Max/Static Compression Ratio
    //10 Damping Ratio (0=Undamped, 1=Critically Damped)
    //11 Extension Time (seconds)
    //12 Retraction Time (seconds)
    //13 Sound Type
    //14 Airspeed limit for retraction (KIAS)
    //15 Airspeed that gear gets damage at (KIAS)

    The one in RED does not refer to point.7= xxx, xxx, xxx, etc.
    It refers to what tiger1962 showed you:

    point.0= 1, 20.948, 0.000, -11.100, 1181, 0, 1.000, 30.00, 0.250, 4.00, 1.00, 6.00, 6.00, 0, 180.0, 250.0

    It's the 8th element, separated by commas, of the point.0= line.
    Mr Zippy Sent from my keyboard using "Whackamole", NudgeAKey + 2 Fingers

    Emachines T3418 AMD 3400+ processor 2GHZ/256KB L2 Cashe 2Gig Ram 160Gig HDD NVidia GEForce 6100 GPU Running WinXP Home Can't believe it still works! Running FSX Standard with SP1 and SP2

  9. #9

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    And tell him it wasn't you whose 'text' was of the improved contact points. (Hello...it was ME! hehe).

    You changed line 7 to 'type 5' which is WATER RUDDER and has nothing to do with turning radius. And that 'rudder' is at the end of your right wing, 10 ft up (ie: useless even as a water rudder). You can remove all the 'Type 2' cnt pts (ie: 'scrapes') and leave only the 'Type 1' cnt pts (wheel) as the scrapes do not play any role in taxi or turning.

    You have to be professional and just keep the speed down to between 2 and 5 kts while you are turning. One 'other' way of doing it is to go Full Throttle>Cut Throttle (back and forth) while making turn. Or another is to press F3 about 6 times, wait, then when you hear the roar of engines, hit F1 (Cut) to keep speed down below 5 kts. Then repeat (ie: press F3 ...etc).
    Chuck B
    Napmule
    PS: 'Type 3' is NOT float, it is 'skid'. Floats are 'Type 4' cnt pts. So your 'legend' is wrong.
    Last edited by napamule2; 03-07-2018 at 05:51 PM.
    i7 2600K @ 3.4 Ghz (Turbo-Boost to 3.877 Ghz), Asus P8H67 Pro, Super Talent 8 Gb DDR3/1333 Dual Channel, XFX Radeon R7-360B 2Gb DDR5, Corsair 650 W PSU, Dell 23 in (2048x1152), Windows7 Pro 64 bit, MS Sidewinder Precision 2 Joy, Logitech K-360 wireless KB & Mouse, Targus PAUK10U USB Keypad for Throttle (F1 to F4)/Spoiler/Tailhook/Wing Fold/Pitch Trim/Parking Brake/Snap to 2D Panel/View Change. Installed on 250 Gb (D. FS9 and FSX Acceleration (locked at 30 FPS).

  10. #10
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    It is clear I understand nothing of all this. Apolologies...

    Can one of you two (or both) post a whole text section similar to the one I posted so I can have tight turns on the ground please?

    However, I must say one thing: The text I posted below works fine for me--I have tight turns on the ground and the plane flies okay.
    I have also given it brakes and a parking brake that suit me fine.

    What fascinates me is how you two guys gained your impressive knowledge of these parameters?
    Tutorial somewhere or through trial and error?
    If thru a tutorial, please post a link for me here.

    Nick

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