Skip to content
View in the app

A better way to browse. Learn more.

The AVSIM Community

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Contact Point Issue

Featured Replies

Hi All,Been having problems getting what i believe to be the contact points right. As you can see below the main gear digs into the ground while the nose gear sits properly (atleast i think). All of this creates a lean in the wrong direction as the 777 has a bit of a forward lean and with this model the lean appears to be backwards or atleast nuetral at the very best.http://forums.avsim.net/user_files/175229.jpgI have no idea which contact point is which so i don't want to start messing with this. I'm assuimg this problem is contact points. here's the points...[contact_points]static_pitch = 0.1static_cg_height = 17.56tailwheel_lock = 0gear_system_type = 1max_number_of_points = 17point.0 = 1, 85.437, 0, -19.72, 1181.1, 0, 4.521, 65, 1, 2.5, 0.7235, 13, 14, 0, 270, 270point.1 = 1, -6.76, -20, -20.32, 1574.8, 1, 4.521, 8, 1.91, 2.5, 0.747, 13, 14, 2, 270, 270point.2 = 2, 30.861, -31.6723, -14.1458, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.3 = 2, 30.8612, 31.5494, -14.1458, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.4 = 1, -6.76, 20, -20.32, 1574.8, 2, 4.521, 8, 1.91, 2.5, 0.747, 12.9, 13.9, 3, 270, 270point.5 = 2, -102, -36, 9, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0point.6 = 2, -38.4, -105, 12.5, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0point.7 = 2, -102, 36, 9, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0point.8 = 2, -38.4, 105, 12.5, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0point.9 = 2, -102, 0, 44.1266, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0point.10 = 2, -88.3844, 0, 0.0661, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.11 = 2, -57.091, 0, -6.708, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.12 = 2, -44.38, 0, -8.6234, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.13 = 2, -102.1003, 0, 3.9805, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0point.14 = 2, 50.4709, 0, 13.0267, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.15 = 2, 105.0852, 0, 0.4276, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.16 = 5, 0.0, 0.0, -10.0, 1600, 0.0, 0.0, 50.0, 0.0, 0.0, 1.00, 1.0, 1.0, 0, 0.0, 0.0Any help would be greatly appreciated. ThanksKind RegardsJP

A quick and dirty technique is to create a light with the coordinates of a contact point so you can literally see which one you are working with, and where it is so you can decide how to best adjust it.This is a favorite if you do not have the model to just get the coordinates from the part. If you do have the model, then you can also make sure that it's position (rotation about it's CG) is correct for flight before you finalize them.

  • Author
  • Moderator

Most of the time, authors will group their contact points by function. IOW, "gear points" and "scrape points." The listing you posted is "mixed up," which makes it more of a challenge.Fortunately, it's easy to re-arrange them by functional group, as I've done for you below. The first three entries are Class #1, which means they are for the landing gear. The nose gear is "point.0", the left main is "point.1", and the right main is "point.2". I've highlighted the "vertical position" of both left and right main gear in BOLD text. Note that they are larger numbers than the main gear. Begin by setting those numbers equal to the nose gear's distance, and then tweak up/down from there.Here is a list of what each field of the contact entry means://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)static_pitch = 0.1static_cg_height = 17.56tailwheel_lock = 0gear_system_type = 1max_number_of_points = 17// Gearpoint.0 = 1, 85.437, 0, -19.72, 1181.1, 0, 4.521, 65, 1, 2.5, 0.7235, 13, 14, 0, 270, 270point.1 = 1, -6.76, -20, -20.32, 1574.8, 1, 4.521, 8, 1.91, 2.5, 0.747, 13, 14, 2, 270, 270point.2 = 1, -6.76, 20, -20.32, 1574.8, 2, 4.521, 8, 1.91, 2.5, 0.747, 12.9, 13.9, 3, 270, 270// Scrapepoint.3 = 2, 30.861, -31.6723, -14.1458, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.4 = 2, 30.8612, 31.5494, -14.1458, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.5 = 2, -102, -36, 9, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0point.6 = 2, -38.4, -105, 12.5, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0point.7 = 2, -102, 36, 9, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0point.8 = 2, -38.4, 105, 12.5, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0point.9 = 2, -102, 0, 44.1266, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0point.10 = 2, -88.3844, 0, 0.0661, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.11 = 2, -57.091, 0, -6.708, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.12 = 2, -44.38, 0, -8.6234, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.13 = 2, -102.1003, 0, 3.9805, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0point.14 = 2, 50.4709, 0, 13.0267, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.15 = 2, 105.0852, 0, 0.4276, 787.4, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0point.16 = 5, 0.0, 0.0, -10.0, 1600, 0.0, 0.0, 50.0, 0.0, 0.0, 1.00, 1.0, 1.0, 0, 0.0, 0.0

Fr. Bill    

AOPA Member: 07141481 AARP Member: 3209010556


     Avsim Board of Directors | Avsim Forums Moderator

Create an account or sign in to comment

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.