Taxi problems

[martinlukas]

Sometimes when I taxi with my B737 with moderate speed I suddenly lose my front wheel and my nose dips into the ground, or I totally crash with no obvious reason. Has anybody seen something like that? Thanks.

[chris_NZ]

Sounds like a scenery layering problem - you may be hitting 'invisible' scenery that you cannot see but FS thinks is there. Does it always happen at a specific airport, or area? Have you installed any new scenery? If you have, disable it through the scenery library then try again. If the problem is fixed, then you know it is new scenery.

Let me know how you go,

Chris

[nwabri]

Which 737?

[napamule2]

For the default 737's changing the 'Impact Damage Threshold' value from 1181.1 to 1581.1, or 1800.0 (?) should 'fix' this problem. Here's my mods, which includes placing wheels on the ground (ie: not floating), and amount of compression for them, too.
//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)

(contact_points) //Note: change parentheses to brackets!!
point.0=1, 40.00, 0.00,-8.20, 1581.1, 0, 1.442, 55.92, 0.3, 2.5, 0.9, 4.0, 4.0, 0, 220.0, 250.0 //ORIG p3=-8.40,p4=1181.1,p8=0.6,
point.1=1, -7.75,-8.58,-8.50, 1574.8, 1, 1.442, 0.00, 0.7, 2.5, 0.9, 6.9, 6.9, 2, 220.0, 250.0 //ORIG p3=-8.60,p8=1.0,
point.2=1, -7.75, 8.58,-8.50, 1574.8, 2, 1.442, 0.00, 0.7, 2.5, 0.9, 7.1, 7.1, 3, 220.0, 250.0 //p3=-8.60p8=1.0,

The values after '//' are the original values, before changes, just for reference. IF it's payware, or other model(s) than the change to 'Impact Damage Threshold' will still apply. Ignore the rest.
Chuck
PS: Make changes (notepad) and don't forget to 'Save' (not Save As). Notepad knows which cfg you are working on, so a simple 'Save' will do. Reload AC and go test it.

[martinlukas]

it happens to the downloaded: FFX/SGA Boeing 737-300 in Lufthansa "Hanau" livery.

it also happens at certain locations at the airport with default scenery where the elevation seems to change. the ground "pops-up" a little, and thats when I get caught when I taxi to fast.