Contact points and Sain Vitus dance

[peperez]

I'm converting a FS9 He178 to CFS2. In CFS2 its behaviour at land is horrible. It seems affect by Parkinson disease trembling all time. How can I fix it? At air, it flies well.

Peperez

[fliger747]

Mostly having gone the other way, not sure that I can be of too much help. However the two items that have caused trouble for me with such conversions have been the 'landing gear' and the plane landing sideways. The first one It's a matter of setting the landing gear compression and static loadings correctly. As a help, you might find the settings in the cfg file for a similar plane that flies OK and try those. Those setting will be found in the contact points, section back about halfway through the landing gear strings, which will be the first three lines. If the gear is too stiff, there seems to be a 'flubber effect' in which at it's worst the modulus of elasticity exceeds one and the thing will keep bouncing higher and higher! In the second instance, with the plane wanting to land and track sideways, the way in which directional stability is read between the two programs is different and needs to be adjusted.

I have had some luck airwrenching the files, running the things through Jerry's program to convert from CFS2 and others to FS9, haven't tried the other direction. One could probably try the same thing by running all of the data through Jerry's Flight Dynamics Worksheet (Excell).

Sorry for not being more specific!

[Henry]

Airwrench will correct for cfs2
actually if its a good cfg and airfile
it will work in cfs2
im guessing here but its probably the airfile
and not the cfg
what is the exact plane maybe i can take a look
H

[Bradburger]

peperez,

Get a copy of ACM (see 'Tools' thread) if you want to sort out Contact Points! You can position them to fit where they should exactly for the MDL and adjust all the parameters such as wheel size, static compression, compression ratio and damping ratio. :)

As for the bouncing problem, well I still haven't worked out exactly how to tune these parameters for a given FM (it depends a lot on weight distribution and the postion of the weels), but have found that if the FM & contact points correctly match the MDL then you don't have this sort of problem. :)

If you want, you can send me the flies and I'll have a crack at fixing them.

Cheers

Paul

[Henry]

unfortunatelly the acm site seems to be down
i have an unregistered version
and went to register in and the site had gone
H

[Bradburger]

unfortunatelly the acm site seems to be down
i have an unregistered version
and went to register in and the site had gone
H

Damm, forgot about that! :mad:

I did email them a couple of weeks ago to let them know about the site being hacked.

Hopefully, they'll be up again soon.

Cheers

Paul