Bouncing on water with SP1

[Guest steve43]

Hi guys, has anyone else had this problem. All my float planes seem to bounce on water, or maybe better explained every 5 seconds or so the plane seems to lift above the water and then drop. This just occurs now with SP1? Any ideas?Steve

[GeorgeT93 1]

No ideas, but I've also noticed the same behavior myself since installing SP1. This did not happen prior to installing the service pack. Not sure what's causing it, but I do hope someone can tell us what's causing it, and either how to fix it, or that Aces figures it out and fixes it. I'm finding myself avoiding flying in seaplanes and amphibious planes (my favorites to fly), as water landings and takeoffs have become too unpredictable with the sporadic 'bouncing' out of the water, even at low speeds.-George

[Guest DP1]

I've had the same "bounce" with the float planes since SP1 too.

[danr 0]

Same problem. I have also noticed that leisure boats start to bounce when you taxi close to them in a float plane.

[Guest kd001]

I just tried the floatplane for the first time and I too get bounces! Is there anyone who is not having post SP1 problems with the floatplane?

[FlyingsCool 3]

Could somebody with pre-SP1 FSX post the contact points (from the aircraft.cfg file) for the Beaver and Grumman so that we can compare them with SP1 FSX? Have they changed?There is a fix for the contact points for the Grumman here at Avsim, either in the forums or the library. Has anyone tested that in SP1 FSX?Thomas[a href=http://www.flyingscool.com] http://www.flyingscool.com/images/Signature.jpg [/a]I like using VC's :-)N15802 KASH '73 Piper Cherokee Challenger 180

[Cruachan 705]

Seems okay here.Have you tried switching on crash detection? I know that with crash detection off (ignored) in FS9 a float plane bounces high in the sky if it touches water. Having said that, I can't reproduce this in FSX.My realism settings are all maxed - ? relevant to this issue - haven't tested.Mike

[Guest CocoLoco]

Yes, I'm getting this too. It's very annoying since I particularly like float planes. It is almost like the plane's position is being recalculated every few seconds which causes the plane to be repositioned (or its a wave effect gone badly wrong).I thought it was just my setup but apparently not. I wonder if it depends where you are (e.g. inland versus out at sea). I've written a SimConnect based program that allows me to set or get most SimConnect data and events - I will try to do some testing with this to find out what's happening to the plane's coordinates over a 30 second sample while it's bouncing.David

[Guest Cavokk]

Yup same problem here, also didnt notice pre-sp1RegardsK.

[GaryGB 10]

Hi All:This was one of the recent detailed threads on the topic of FSX amphibian contact points:http://forums.avsim.net/dcboard.php?az=sho...71438&mode=fullI have sent a PM to "TheJedi" asking him to offer any insights he may be inclined to share with us on this thread.Hope this helps! :-) GaryGB

[Guest TheJedi]

I got your mail.I didn't have a look at that bouncing effect yet.Also, I completely un- and reinstalled FSX before applying FSX.However, my fix fortunately included the original contact point data (but only for the floats, not gear and scrapes).So we indeed can compare some values.So these are the original values pre-SP1 for the Grumman Goose:;/FLOATSpoint.3=4, 5.1, -1.8, -3.9, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0point.4=4, 5.1, 1.8, -3.9, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0point.5=4, -15.3, -1.8, -2.1, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0point.6=4, -15.3, 1.8, -2.1, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0;/Wing Floatspoint.7=4, -2.1,-20.5, -0.8, 1500, 0, 0.0, 0, 0.50, 2.5, 0.70, 12.0, 12.0, 5, 0, 0point.8=4, -2.1, 20.5, -0.8, 1500, 0, 0.0, 0, 0.50, 2.5, 0.70, 14.0, 14.0, 5, 0, 0point.9=5, -6.5, 0.0, -6.0, 0, 0, 0.0, 20, 0.00, 0.0, 1.00, 0.0, 0.0, 0, 0, 0And these are the current values from SP1:;/FLOATSpoint.3=4, 5.1, -1.8, -3.9, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0point.4=4, 5.1, 1.8, -3.9, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0point.5=4, -15.3, -1.8, -2.1, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0point.6=4, -15.3, 1.8, -2.1, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0;/Wing Floatspoint.7=4, -2.1,-20.5, -0.8, 1500, 0, 0.0, 0, 0.50, 2.5, 0.70, 12.0, 12.0, 5, 0, 0point.8=4, -2.1, 20.5, -0.8, 1500, 0, 0.0, 0, 0.50, 2.5, 0.70, 14.0, 14.0, 5, 0, 0point.9=5, -6.5, 0.0, -6.0, 0, 0, 0.0, 20, 0.00, 0.0, 1.00, 0.0, 0.0, 0, 0, 0Conclusion:No changes to float contact point data.The weird behaviour should be caused by something else.I'm sorry I couldn't be of more help.You could still try some of the values I supposed in my realism fix to see if it changes something, but I doubt it will:;/FLOATSpoint.3=4, 5.1, -1.8, -2.8, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0point.4=4, 5.1, 1.8, -2.8, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0point.5=4, -15.3, -1.8, -1.7, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0point.6=4, -15.3, 1.8, -1.7, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0;/Wing Floatspoint.7=4, -2.1,-20.5, -1.0, 1500, 0, 0.0, 0, 0.50, 2.5, 0.70, 12.0, 12.0, 5, 0, 0point.8=4, -2.1, 20.5, -1.0, 1500, 0, 0.0, 0, 0.50, 2.5, 0.70, 14.0, 14.0, 5, 0, 0point.9=5, -6.5, 0.0, -6.0, 0, 0, 0.0, 20, 0.00, 0.0, 1.00, 0.0, 0.0, 0, 0, 0Good luck,TheJedi

[Guest CocoLoco]

This is beginning to get a bit weird. I recorded about 40 seconds worth of data with the plane stationary on the water (engine on at idle, no wind, 0 kias). The plane was a BeaverX but I get the same behaviour on the default MS Beaver.The attached graph shows the height above sea level in meters over this time period (I was on lake Te Anau in New Zealand which I think is 184 and a bit meters up). You can see the plane sharply rise and fall by about half a meter about seven times in the trace, at one point doing this twice in succession.Now for the really odd bit... if I watch this in spot view and leave it for a few minutes, the plane will eventually stop bouncing. If I then pan around in spot view without touching anything else, the plane will start bouncing again. If left for a while, it then calms down again and just moves with the water.Why should moving the viewpoint change the recorded height of the plane and make it bounce???Can some of you please try this out and let me know if you get the same effect. Try landing on an inland bit of water rather than the sea (Te Anau is quite good if you have the BeaverX amph. - just head north and admire the view). Land on the water, coast to a halt, go into spot view and wait - hopefully the bounce will stop. Then pan round in spot and see if there are points where it starts up again...

[Cruachan 705]

Hi,I tried with the default MS Beaver and was not able to reproduce this behaviour. Seems okay on mine at Friday Harbour and Te Anau. I tried locking the SPOT view but no change, still okay.Mike

[Holger 0]

Hi guys,we're seeing the same issue with our AI floatplanes and vessels.I believe this has to do with changes to the water elevation computations, meaning it's unrelated to the aircraft or vessel.There's a similar behavior in FS9 when you approach AI floatplanes or vessels: they start bouncing because FS makes small adjustments to the water level when the observer closes in. In other words, it's the changes to the viewpoint of the observer that lead to this issue.Maybe this got worse because of the "round earth" approach of FSX, which means no place is really flat anymore?Interesting though that some users don't seem to have the issue or less so. Maybe there are terrain/cfg related settings that minimize the effect?Cheers, Holger

[danr 0]

Same effect at Odell Lake in Oregon, USA using the MS Beaver float plane.