Simviation Forum - Tailwheel not working (cannot turn) on 2 aircraft

Dec 19^th, 2012 at 8:03pm

wahubna Offline
Colonel
WMU Bronco
Michigan

Gender:
Posts: 1064

This has been a problem for a while, the Pond Racer for FS2004 from this site cannot turn on the ground neither can the Grumman Skyrocket for FS9 from SOH/Conrad.

These planes cannot turn at all on the ground. I will post configs in a minute for both.

‎"At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation."- Igor Sikorsky

Back to top

IP Logged

Reply #1 - Dec 19^th, 2012 at 8:06pm

wahubna Offline
Colonel
WMU Bronco
Michigan

Gender:
Posts: 1064

Grumman Skyrocket:

[contact_points]
static_pitch = 11.1
static_cg_height = 4.0
max_number_of_points = 7

point.0 = 1, -19.6096, 0, -2.0063, 2703.329, 0, 0.4, 0, 0.296, 2.5, 0.732, 5, 5, 0, 0, 0
point.1 = 1, 2.1066, -6.917, -6.2291, 2755.906, 1, 1.2, 0, 0.395, 2.5, 0.732, 5, 5, 2, 0, 0
point.2 = 1, 2.1068, 6.917, -6.2292, 2755.906, 2, 1.2, 0, 0.395, 2.5, 0.732, 5, 5, 3, 0, 0
point.3 = 2.000, 0.917, -21.000, 0.917, 1574.803, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 5.000, 0.000, 0.000
point.4 = 2.000, 0.917, 21.000, 0.917, 1574.803, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 6.000, 0.000, 0.000
point.5 = 2, -20.4679, 0, 0.3909, 1574.803, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0
point.6 = 2.000, 6.417, 0.000, -5.000, 1574.803, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4.000, 0.000, 0.000
gear_system_type=1

PS other than this turning issue on the ground, this plane is amazing! Get on over to SOH and get it!
It has not one, but TWO radials and it is a Grumman, what more can you ask for?! Cheesy

‎"At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation."- Igor Sikorsky

Back to top

IP Logged

Reply #2 - Dec 19^th, 2012 at 8:08pm

wahubna Offline
Colonel
WMU Bronco
Michigan

Gender:
Posts: 1064

Pond Racer

[contact_points]
//0 Class
      //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)
//GEAR
//SCRAPES

static_pitch = 9.800
static_cg_height = 2.516
gear_system_type=0
max_number_of_points=7
tailwheel_lock=0
point.0= 1, -16.250, 0.000, -1.500, 1600, 0, 0.200, 0.000, 0.500, 3.360, 0.850, 0.000, 0.000, 0, 152.1, 179.9
point.1= 1, 1.420, -3.993, -4.303, 1600, 1, 0.500, 0.000, 0.500, 2.500, 0.850, 4.100, 4.300, 2, 152.1, 199.9
point.2= 1, 1.420, 3.993, -4.303, 1600, 2, 0.500, 0.000, 0.500, 2.500, 0.850, 4.300, 4.100, 3, 152.1, 199.9
point.3= 2, 22.990, -13.000, 1.052, 800, 0, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 5
point.4= 2, 22.990, 13.000, 1.052, 800, 0, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 6
point.5= 2, 29.972, 0.000, 0.052, 800, 0, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9
point.6= 2, 5.220, 0.000, -0.448, 800, 0, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4

the plane:
http://simviation.com/1/search?submit=1&keywords=Scaled+Composites+Pond+Racer+Pa...

Once again, other than the ground turning issue, this plane is boat loads of fun.

‎"At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation."- Igor Sikorsky

Back to top

IP Logged

Reply #3 - Dec 19^th, 2012 at 11:20pm

dave3cu Offline
Colonel
Procrastinate now, don't
put it off.
3CU, Northern Wisconsin, USA

Gender:
Posts: 3077

You need to change the 'steer angle' value of the tailwheels.

They're currently at 0.0, effectively making them static.

Changing the value to 180.0 makes them castoring so you steer with differential thrust and brake.

Changing to a value less than 90.0 makes them tillared, steerable with rudder control. Values between 30 and 60 are the normal.

At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation. Igor Sikorsky

I intend to live forever....so far, so good. Steven Wright

You know....you can just rip up a to-do list.

Back to top

IP Logged

Reply #4 - Dec 20^th, 2012 at 5:36am

wahubna Offline
Colonel
WMU Bronco
Michigan

Gender:
Posts: 1064

dave3cu wrote on Dec 19^th, 2012 at 11:20pm:

You need to change the 'steer angle' value of the tailwheels.

They're currently at 0.0, effectively making them static.

Changing the value to 180.0 makes them castoring so you steer with differential thrust and brake.

Changing to a value less than 90.0 makes them tillared, steerable with rudder control. Values between 30 and 60 are the normal.

Thank you!

‎"At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation."- Igor Sikorsky

Back to top

IP Logged

	Search the archive: