Random Phantom Forces Issues

[stickman939]

So, every now and then I'll be flying my craft, be it plane or rocket, and I'll suddenly be hit with a TON of Gs sending my rocket into a spin (even tho it's aerodynamically stable) or drop my plane tens of meters in altitude.

I've got 57 mods in total (excluding things like MM, also link to imgur with screenshots[updated])

It happens enough to be irritating when doing launches in Career mode, but not enough to be a serious problem I can't work through.

Edited November 5, 2016 by stickman939

[Viatic_unicycle]

If it helps narrow it down I am having the same issues while only running Kerbal Engineer, Distant Object Enhancement, And Kerbal Joint Reinforcement. So far it's happened twice on a rockets ascent, but I have heard similar accounts of it occurring during descent as well

[stickman939]

5 hours ago, Viatic_unicycle said:

If it helps narrow it down I am having the same issues while only running Kerbal Engineer, Distant Object Enhancement, And Kerbal Joint Reinforcement. So far it's happened twice on a rockets ascent, but I have heard similar accounts of it occurring during descent as well

Hmm... Must be either a problem with KJR, because that's a mod we've got in common, or the game itself. Haven't played much in 1.2.1 so I dunno if it's been fixed. But from what you said, it seems not too uncommon.

[Ohm Machre]

It might be KJR. I haven't noticed the problem myself, but that may be because I don't have either of the two mods that Viatic has. I have noticed previously that some B9 parts cause a huge midair 'bump' once I've taken off the runway in a previous install (before I curtailed my mods from scratch to eliminate bugs).

[Viatic_unicycle]

I get the midair bump every launch I do, usually about 1km after launch. Never had it cause me to lose control of a rocket till earlier today. I'm going to uninstall KER and see if it still happens. Oh and I am on 1.2.1 so it def wasn't something that was fixed in that release and I'm pretty sure that midair bump is the same thing as the phantom force issue I experienced on Minmus

 

edit: ok just tested without KER and I had the same results, midair bump shortly after liftoff. It's not devastating if you have a high TWR but the one I launched earlier didn't and it flipped out of control due to it

Edited November 6, 2016 by Viatic_unicycle

[Viatic_unicycle]

Ok downloaded Kerbal Joint Reinforcement 3.3.1 which had the change log of
 

v3.3.1  
	Bugfixes  
	--Fix a critical bug involving unphysical forces applied to vessels on load / unload of other vessels and SOI switches

and I've yet to experience the problem again