Simviation Forum - AH-64 Tail wheel bouncing

Sep 3^rd, 2010 at 11:41pm

Capt.Propwash Offline
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KCHS, Charleston, SC, USA

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..... ok. you already know the problem from the title, do i need to play around with the contact points to get it to stop bouncing while i am on the ground? My other freeware and payware Helo's that are 'taildraggers' have no problems at all with the bouncing tails, just this one.

any thoughts?

Edited:

[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)

static_pitch = 1
static_cg_height = 6.75
max_number_of_points = 9

//--------0-----1------2-------3-----4---5---6----7-----8-----9---10----11-12-13
-14--15

point.0 = 1, -32.13, 0.00, -6.40, 4500, 0, 0.95, 90, .38, 1.8, 0.5, 0, 0, 2, 00, 300 ; tail wheel
point.1 = 1, 4.00, -4.25, -7.45, 2800, 1, 1.50, 0, .70, 1.8, 0.5, 0, 0, 3, 00, 300 ; left wheel
point.2 = 1, 4.00, 4.25, -7.45, 2800, 2, 1.50, 0, .70, 1.8, 0.5, 0, 0, 3, 00, 300 ; right wheel
point.3 = 2, -0.30, -8.40, -0.80, 2500, 0, 0.00, 0, 0.0, 0.0, 0.0, 0, 0, 5, 0, 0 ; scrape pylon left
point.4 = 2, -0.30, 8.40, -0.80, 2500, 0, 0.00, 0, 0.0, 0.0, 0.0, 0, 0, 6, 0, 0 ; scrape pylon right
point.5 = 2, -32.00, 0.00, -2.00, 2500, 0, 0.00, 0, 0.0, 0.0, 0.0, 0, 0, 9, 0, 0 ; scrape aft boom
point.6 = 2, 17.00, 0.00, -4.80, 2500, 0, 0.00, 0, 0.0, 0.0, 0.0, 0, 0, 4, 0, 0 ; scrape nose
point.7 = 5, 0.00, 0.00, 0.00, 2000.00, 0, 0.00, 0.00, 0.00, 0.00, 0.00, 0.10, 0.10, 0, 0, 0    //Water Rudder

gear_system_type=0

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Reply #1 - Sep 3^rd, 2010 at 11:42pm

BrandonF Offline
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How about a link to the helicopter. Maybe someone can check it out...

Cool

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Reply #2 - Sep 4^th, 2010 at 8:23am

Capt.Propwash Offline
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KCHS, Charleston, SC, USA

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it is a payware bird that i had bought a long time ago, and the company no longer exists. Cry

so there is no way for me to go to them directly for the real support that i need. just thought someone might have had an idea of what would be causing the problem.

all other tail draggers are fine. Alpha UH-60, default DC-3, WOP P51, B-17G....

only this one has a tail wheel that bounces at every airport, .. anywhere you try to LZ.

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Reply #3 - Sep 5^th, 2010 at 6:49pm

Capt.Propwash Offline
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Let's get a little mud
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KCHS, Charleston, SC, USA

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Posts: 1958

no ideas at all?

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Computer Specs:: Acer Aspire Laptop..Win7 Home Premium 64-bit (sp1), AMD Athlon II X2 P340 (Dual Core) [2.2 Ghz], ATI Mobility Radeon HD 4250 (256mb), 4GB DDR3......FS9.1(sp3) / FSX (sp2)..... Ultimate Terrain X, Ground Environment X, REX, FTX ORBX PNW-PFJ-NRM-CRM, OZx, Tongass Fjords, Misty Moorings

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Reply #4 - Sep 5^th, 2010 at 9:04pm

Opa Offline
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Fly FS
Plano, Texas

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I copied this from another forum -

Perhaps the info will provide something for you to experiment with.

quote

Contact point 0 is the nosegear / tailwheel

The contact point is located
-15.72 feet back/ aft from the aircraft reference point
0.0 feet to the left or right of the aircraft centerline
-0.93 feet below from the aircraft horzontal centerline

Change the last number until you get an appearance you like.

Or adjust the static_pitch a small amount. Because this is a tail dragger, static_pitch may control the tailwheel appearance more than the contact point.

end quote

This was from a post by Reggie Fields, who is a well known FS expert, regarding a totally different aircraft but perhaps his ideas will be useful to you.

David "Opa" Marshall

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Reply #5 - Sep 5^th, 2010 at 11:29pm

Capt.Propwash Offline
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Let's get a little mud
on the tires!
KCHS, Charleston, SC, USA

Gender:
Posts: 1958

so by that, use the following numbers...

point.0 = 1, -32.13, 0.00, -6.40

and play with the highlighted number

The thoughts and expressions contained in the post above are solely my own, and not necessarily those of Simviation.com, its Moderators, its Staff, its Members, or other guests. They can not, are not, and will not be held liable for any thoughts, or expressions, or posts that I have made, or will make in the future.

Computer Specs:: Acer Aspire Laptop..Win7 Home Premium 64-bit (sp1), AMD Athlon II X2 P340 (Dual Core) [2.2 Ghz], ATI Mobility Radeon HD 4250 (256mb), 4GB DDR3......FS9.1(sp3) / FSX (sp2)..... Ultimate Terrain X, Ground Environment X, REX, FTX ORBX PNW-PFJ-NRM-CRM, OZx, Tongass Fjords, Misty Moorings

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