Simviation Forums

Hiya

My hat is off to the add-on providers here ..some of the work I have seen is as good as it gets. You guys have made MSFS fun for us airplane addicts

I have been havin problems with some of the add-on planes being a bit 'twitchy' and bouncing around while sitting stationary on various runways here an there ..even to the point of 'crashing' when they bounce to hard while taxiing.

I took one of the worst offenders, and have been wanderin thru the FS Edit program trying to smooth it out by changing wheel contact points so the wheels actually hit the ground where they are supposed to, the CG is actually where its supposed to be, and changed Max/Static damping ratios and all the other boxes in the Gear section to no avail so far.

I even thought it might be display settings/frame rate issues .. so I reduced the workload of the vid card a bit by reducing detail settings.. no change.

Plane still sits there, twitching.
I feel like I should poke it to make it stop
Once it gets up some speed the effect reduces ..with only an occasional massive bounce that catapults the plane into the air whether its ready to fly or not.

This happens on major metro runways and community municipal places. Forget about the little dirt strips here and there .. poor plane crashes through the ground more often than not just sitting there on the itty-bitty places.

My next trick is gonna be eliminating all the contact points except the landing gear only ..and gradually adding back scrape points .. perhaps one is not where it is supposed to be.

-Grayeagle
aka Frank P. Williamson (ex-actual 3d video game artist
type) -aka just another airplane nut

Frank,

MOIs can also cause the problem you are describing.  You might try increasing the MOIs a bit. I usually start with values from an aircraft of similar weight and dimensions that I know is stable and then interpolate from there.

Lou

i had this same problem with the single nose gear of a bomber! the nose would bounce like a pogo stick! it would either bounce so high it would collape or flip over!
How big is your AC and whats the layout on the gear?

or just post the first few contact points from the aircraft, (the first three usually are the gear).. or to make it easier just try and change the damping ratio to .80 or .70

thats all i can say, right now im struggleing with a B-17, the tail sinks through the earth.

These issues can be resolved with a little effort and understanding.

First let me show you a technique I use when designing and setting up suspension.

Milton,
Or, to me 'Mr Milton'. I really admire your work (ie: Army Dash 7 (RC-7B)) and logged a LOT of hours on that, landing it ANYWHERE I wanted (even Carriers!).  I have it as one among a few 'Most Favorites' and it's always available to take a relaxing (ha!) ride. That sucker is INTENSE! and I love that part about it.

My reply is mostly to ask why you don't have a clinic here as I am sure there are a lot of 'wana-be' Air and Cfg Guru's out there (me included). I've been 'doing' FDE edits since FS98. I work on vehicles (HUMMER, Enzo Ferrari (my mods made it  possible for it to do more than 40 kts AND not flip over when making a turn (even at 20 kts!)). Of course, Jessy glossed over my contribution, and never did give me 'proper' credit, just a mention for 'helping' him with cfg. Heck. I slaved for 2 weeks on that, and fixed it so he could upload it. No justice sometimes. Anyway, that's in the past). My point is that we don't have all the 'technical' what will all, and just do a lot of trial and error. Nice to 'see' what makes the contact points 'work', as you point out in your post. This is what I do 24/7. Just got through doing adjustments so Rob Barendregt's V-22 would not bounce, crash on full thottle shut off, or sink into ground (-400 ft),  and be able to fly more like helicopter (ie: land SOFTLY and not just PLUNK down to ground from 15 ft up).  It's HARD work when you don't know what you're doing (haha). But I love it. I am complaining AND bragging, I guess-sorry.  My point is that the majority of models that come out all need some kind of adjustment. Yet the modlers all seem to resent any email with improvement/fix. Why is that? The 'advice' is FREE, and it would make AC more enjoyable to fly. Which should be pleasant thing to do, and not a 'life threatening experience' (exegeration, of course, as it's NOT 'real'). So, maybe they don't have a resource (such as you) to go to. Which is what FS needs. A 'hanger' (site) where you can submit your model (ahead of upload) for testing. Yeah, there are 'beta' testers, but can they do air files? I hink not! So if I ever see a 'MILTON'S GARAGE' (for air files) I want to work there (willing to start from ground up (PUN INTENDED!)), so I can learm MORE about the cfg and air files. I AM pretty good (I'm TOO GOOD-haha) and can do most tweaks, and be fairly confident of results. So keep me in mind if you go into business-I work cheap! Cheers.
Chuck
napamule
California

#1 - Milton already gives free "clinics".  He frequently posts in this and other design forums, answering questions and pointing people - including other experts - in at least one direction.


#2 - Also - Get over the Jessy situation.  You're carrying too much of a chip on your shoulder for too long a time.  That matter was dealt with already.  That alone would be a reason to avoid working with you, no matter how good your vehicle FDEs are (and they are good!).

Felix,
Yeah, Milton may give free 'clinics', but is there a 'place' (or person(s)) where modelers can submit their work BEFORE they upload? NO! That was idea I wanted to put out there, but I guess it's not a good idea.

About my 'chip'. Well it's more like a large tree. One that fell on me when he DISRESPECTED me like he did.  And that hurts.  It hurts a lot. But I'll just chalk it up to him being an ignorant immigrant, acting like he was a Citizen, AND Pledgeing Allegiance to the Flag, and everthing. But where are his values? Phoney buzzard.
Chuck  

Felix,
Yeah, Milton may give free 'clinics', but is there a 'place' (or person(s)) where modelers can submit their work BEFORE they upload? NO! That was idea I wanted to put out there, but I guess it's not a good idea.

It's better if the modeller and flight dynamics specialist work it out before release, rather than risk the modeller getting slammed for a "screwed up flight dynamics" or an "unfinished model".. etc.


[quote]
About my 'chip'. Well it's more like a large tree. One that fell on me when he DISRESPECTED me like he did.