Hello there...I'm pretty certain I've solved the runway "bouncies" mystery that seems to have plagued many MSFS users, including myself. This phenomena occurs when switching from the 2D cockpit viewpoint to the Tower or Spot viewpoint, and usually only happens once or twice until the plane "settles" down. However once you've moved your position and switched views, invariably this will occur again. Also, upon moving down the runway on takeoff or rollout, when the viewpoint has been switched, the aircraft will most times "bounce" the landing gear with lots of tire smoke. This is very annoying and unrealistic. There was a rather lengthy AVSIM Forum thread posted several months ago on this subject at the following link:http://forums.avsim.net/dcboard.php?az=sho...topic_id=178620Recently, while in development of the new CRJ panel, I've been using the POSKY CRJ-200LR model and have noticed it tended to bounce violently, with the tires seeming to travel a foot or more vertically. Some in the previous thread seem to think there are "holes" in the runways that appear out of nowhere, while others think it to be due to add on sceneries. I am in the opinion that the problem lies within the aircraft.cfg file itself.Today while having finally been fed up with another nose gear collapse during initial throttle up on takeoff, I restarted the sim and found the viewpoint remaining in the starboard spot viewpoint where it had left off. I hit the "slew" button to move the aircraft back into position, and when I did, I noticed the landing gear had travled upwards above the runway. This was odd. So, with the parking brakes set, I then toggled between live and slew noticing the landing gear traveling up and down, much like it does when the viewpoints are switched. I tried this same experiment with the default 747-400 and found that half the time the nose gear would collapse, and when it didn't, there was significant wheel travel much like the CRJ as above. Could this be the origin of our dreaded bouncies? My first thought was "Contact Points". I broke out the MSFS Aircraft Container SDK and brushed up on the Contact Points section. Two of the entries in this section are the "Static CG Height" and the "Static Pitch" configurations. I found Microsoft's definition of "Static CG Height" very interesting:"The static height of the aircraft when at rest on the ground (feet). The program uses this value to position the aircraft at startup, in slew, and at any other time when the simulation is not actively running." The same thing goes for the "Static Pitch" as well.In observing the action of the 747-400, I then opened the aircraft.cfg and changed the Static CG Height entry to a lower setting from "18.6" to "17.6", and changed the Static Pitch from "-1.5" to "0.0". I reloaded the 744 and this time found there to be very little movement if any, when switching views and in changing to and from slew mode. So, now to try this experiment with the CRJ.The CRJ Static CG Height was changed from, "6.410" to "5.600", and the Static Pitch was changed from, "-0.750" to "0.000". Success! There was no longer a severe bouncing in the landing gear, but I did notice slight movements when changing to and from slew mode. I ended up tweaking the gear settings in the contact points section to allow for these changes as follows:point.0=1, 38.83, 0.00, -6.40, 981.1, 0, 0.8500, 70.0, 0.6, 2.5, 0.8500, 9.0, 10.0, 0, 180.0, 200.0point.1=1, -2.19, -5.39, -6.50, 1174.8, 1, 1.5000, 0.0, 0.9, 2.5, 0.6500, 13.0, 15.0, 2, 180.0, 200.0point.2=1, -2.19, 5.39, -6.50, 1174.8, 2, 1.5000, 0.0, 0.9, 2.5, 0.6500, 13.0, 15.0, 3, 180.0, 200.0There was now no visible motion from the aircraft when switching to and from slew. The aircraft now smoothly travels down the runway with no sign of bouncing at all and no tire smoke, except on landing... exactly where you want it to appear!So, in conclusion, I belive the dreaded "bouncies" are related to the Contact Points of the landing gear in relation to their Static CG Height settings. What may be happening is that when the viewpoints are switched, the sim relates to a "Static" position firsthand before applying the acutal live physics of the aircraft environment. If these are off, then the wheels will travel and strike the runway surface and "bounce". A little tweaking should be all that is needed to cure this phenomena.BTW... most of you may notice with the CRJ that when using the fuel and payload mananager, it states that there's an overload of weight. If you'd like you can try these additional settings within the Weight and Balance section of the aircraft.cfg. This includes some new MOI settings using a formula provided to me by Ron Freimuth and adjusted accordingly:WEIGHT_AND_BALANCE (add brackets)reference_datum_position= 0.000, 0.000, 0.000empty_weight_CG_position= 0.000, 0.000, 0.000max_number_of_stations= 8station_load.0 = "350.0, 40.0, 0.0, 0.0, Flight Deck" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.1 = "200.0, 30.0, 0.0, 0.0, Flight Crew" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)station_load.2 = "300.0, 25.0, 0.0, 0.0, Galley" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)station_load.3 = "2850.0, 15.0, 0.0, 0.0, Std Economy Fwd" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.4 = "2850.0, -5.0, 0.0, 0.0, Std Economy Aft" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.5 = "1500.0, -15.0, 0.0, 0.0, Aft Baggage" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) empty_weight= 30500.000 empty_weight_roll_MOI= 123529.069empty_weight_pitch_MOI= 446417.569empty_weight_yaw_MOI= 520478.008empty_weight_coupled_MOI= 412.033max_gross_weight= 53250.000CG_forward_limit= 0.000CG_aft_limit= 1.000Also, Bombardier lists the Maximum fuel capacity for the CRJ-200 at 14,300 LBS. The following fuel entry will adjust it to the proper capacity:fuel (add brackets)LeftMain= -1.800, -9.360, -1.500, 1067.000, 0.000RightMain= -1.800, 9.360, -1.500, 1067.000, 0.000fuel_type= 2.000number_of_tank_selectors= 1electric_pump=0I'm happy to be able to share these corrections for two aircraft within my system, from the bouncing phenomena on the Runways and Taxiways of our beloved sim!With Kind Regards,Kevin SparkuhlSkyDecks Panel DesignP.S. CRJ's coming soon! Don't ever mention "Hard-Drive" and "Crash" in the same sentence around these parts! : )

Hey I just got an e-mail about this topic, but I did not know who it was from so I never opened it. I hope you have found the solution, because I have to fly with "Ignor Crashes" in FS9 or I never make it off the ground.

Hello again...I just found an excellent tutorial for "Contact Points", titled, "Contact Points 101 for Compleat Idiots", like me. :)http://www.sim-outhouse.com/index.php?loc=articles&page=cpKevin