Sinking Wheels

Just add about 0.300 to vertical height for test of how much you need to add to:

#3 set of numbers in Point.0= line
#3 set of numbers in Point.1= line
#3 set of numbers in Point.2= line

Nose wheel which is Point.0= line

Right & Left mains which are Point 1 & Point.2

Here's format to whats what in aircraft.cfg section:


[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 Damaged (KIAS)
//<<<<<<--------------------------------------------[Gear]------------------------------------------------------------------------------------------>>>>>>
//<<<<<<------------------------------[ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15]
Point.0 =

Don't forget you need to switch planes each time you edit cfg for change to correct itself..
 
In the aircraft.cfg file, change the Contact Points vertical distance to ground. Here's some basic guideline stuff:

//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
[contact_points]

max_number_of_points =9

static_pitch= 2.520
static_cg_height= 2.800
gear_system_type=0
tailwheel_lock=0
point.0= 1, 4.000, 0.000, -3.050, 1500, 0, 0.500, 22.000, 0.150, 2.500, 0.900, 0.000, 0.000, 0
point.1= 1, -1.250, -3.180, -2.890, 3500, 1, 0.500, 0.000, 0.300, 1.360, 0.700, 0.000, 0.000, 2
point.2= 1, -1.250, 3.180, -2.890, 3500, 2, 0.500, 0.000, 0.300, 1.360, 0.700, 0.000, 0.000, 3


Not that you will probably have to change the distances on each by around .5' to .8' to get in the ball park.
 
Krazy & Milton are quite correct and a knowledge of how to edit contact points is very handy. However, there's one other possible cause worthy of mention. BEFORE you go tutuing with the contact points, start your flight at a default airport and check the wheels position relative to the ground. If the aircraft is sitting correctly at a default airport, the problem is in your addon scenery (not flattened properly) and not in the aircraft model. I have that exact issue at addon NZAA and that's what I'd suspect is your issue based on your screenie.

LPXO
 
I think the advice Milton and Key gave you is much more useful than what I was going to say:

It looks like your tires are low on air. Adding 10 PSI to the tires should correct the problem. LOL

OBIO
 
allright I followed instructions fixed the first wheel and when I started on the other wheels the fixed wheels sinking again I don't understand thanks
 
Here's a thought:

See if you're adjusting all the wheels.

Depending on how the modeler set up the contact points there might be three, one for each landing gear unit, or there might be a point for each wheel. Or each pair of wheels. Or whatever.

Anyway, if you're not adjusting all the points, that might explain why your changes have unexpected results.

Check the contact points section to see how many wheel points there. That's the "Class" and it's represented by the first number after the = sign. It may be a single digit, or it may have a decimal point and a string of zeros; for example, it might be 1 or it might be 1.000000; they're the same thing. (Anything after the decimal point, if there is one, will always be just zeroes.)

Check to see how many class 1 points there are, and if you find some that you haven't been adjusting, maybe that's your problem.

If you have been adjusting every wheel point, then the problem must be something else...
 
If you are interested in fiddling with airplanes in FS (it can be addictive) you might try Jerry Beckwith's Airwrench at mudpond.org. I believe that he now has some graphic assistance for setting contact points, which can be a bit complex. The ultimate solution, which is no longer available, was Aircraft Container Manager which showed the wireframe of the aircraft model and contact points.

A common issue, which you may be experiencing, is that the contact points are not at the location of the wheels on the visual model. For instance if the mains are located aft of the visual model, raising the nose wheel would sink the mains!

Cheers: T.
 
Hey fliger I am very confused I just can't figure it out I've fiddled and fiddle with it. Anybody know where to find this aircraft container or have a dowload of it Thanks
 
The above link for the Microsoft ACM SDK is not the same program as the Aircraft Container Manager application I refered to earlier. As noted, it is no longer available.

Cheers: T.
 
fliger747 said:
The above link for the Microsoft ACM SDK is not the same program as the Aircraft Container Manager application I refered to earlier. As noted, it is no longer available.

Cheers: T.
Click to expand...

this is one of the very very useful tools! I hope the authors would make it freeware already, just like alpha does when its old.
 
This is what I have for the PD vulcan took some fiddling to get right, hardly used since doing it, not perfect but close enough for me.

[contact_points]
point.0=1.000000,18.333333,0.000000,-12.500000,1574.803150,0.000000,2.248521,43.200000,0.848635,2.500000,0.384833,5.000000,5.000000,0.000000,0.000000,0.000000
point.1=1.000000,-12.500000,-15.416667,-11.250000,1574.803150,1.000000,2.248521,0.000000,0.513371,5.500000,0.494785,5.000000,5.000000,2.000000,0.000000,0.000000
point.2=1.000000,-12.500000,15.416667,-11.250000,1574.803150,2.000000,2.248521,0.000000,0.513371,5.500000,0.494785,5.000000,5.000000,3.000000,0.000000,0.000000
static_pitch=1.735840
static_cg_height=11.105494
gear_system_type=0
 
You must log in or register to reply here.
Back
Top