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P3D v2 Contact Points; Smoking with low Static Compression

lionheart

lionheart

Messages
10,088
Country
us-arizona
Hey all,

I am making a plane that has an odd suspension that involves the wings. I need the wheels to 'not' move. Spin, but no up/down animation.

With that, I found if I lowered the 'static compression' to 0.03, they work quite well, except for one single thing. They smoke! They smoke like crazy. Even the tail wheel will do this. I have no idea why. They have no contact point near those locations.

What could cause this?

Contacts..........

point.0=1, -15.50, 0.00, -0.17, 1377.95, 0, 0.4100, 24.0, 0.2, 2.5, 0.8, 0.0, 0.0, 0.0, 0.0, 0.0
point.1=1, -0.1, -7.92, -2.88, 1968.50, 1, 1.1660, 0.0, 0.03, 2.5, 0.8, 0.0, 0.0, 2.0, 0.0, 0.0
point.2=1, -0.1, 7.92, -2.88, 1968.50, 2, 1.1660, 0.0, 0.03, 2.5, 0.8, 0.0, 0.0, 3.0, 0.0, 0.0
 
ronh

ronh

Messages
1,243
Country
canada
Do you have an effects section? what's there. Only three points?

Could be that the touchdown effect is on continuously. if you relax the compression does it go away?

Compression ration is 2.5 still. Maybe change that - to what don't know.
 
Last edited:
lionheart

lionheart

Messages
10,088
Country
us-arizona
Thanks Ron, good idea.

I did change the touch down effect to 'dummy' and the smoke is now gone. She was hopping just a bit, so I increased MOI on pitch (the axis it was hopping, or vibrating on) and that too went away.

Man, she handles so well. I am loving this...
 
Milton_Shupe

Milton_Shupe

Resource contributor
Messages
331
Country
us-newmexico
The reason the tires smoke is because the suspension is so stiff.

You can relax the static compression number a bit without the animation if you have enough tire to act as a cushion.
Simply use .1 or .2 for SC and use a ratio of 1.1 or 1.2. The sim thinks you have some suspension but the animation is not there. Hopefully your tire height will allow this.
 
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