Su-27 trim + FFB - ED Forums
 


Notices

Reply
 
Thread Tools Display Modes
Old 07-15-2018, 10:14 PM   #1
Eldur
Senior Member
 
Eldur's Avatar
 
Join Date: Dec 2009
Location: On a fluffy cloud above Ponyville
Posts: 1,261
Default Su-27 trim + FFB

It's been quite a while now since the Flanker finally got a decent FM, but I took it for a spin today again and noticed the same issue I noticed right at it's release still being present.

If you use an FFB stick (MS FFB2 here), you can't trim the plane straight, even at full nose down trim it will lift the nose and needs constant pitch down on the stick, which practically means you're "playing" in the ~ 80% - 100% stick forward area all the time. Basically this renders the plane close to unflyable, at least it's no joy... didn't test the Su-33 though, too scared about it

Track attached, I guess the devs can see the stick inputs there. Please don't blame my non-existent SA, doesn't end well for the airframe
Attached Files
File Type: zip 2.5.2.19273.411-u6-h--su27s-test-01.zip (2.54 MB, 10 views)
__________________
Eldur is offline   Reply With Quote
Old 07-15-2018, 11:41 PM   #2
DarkFire
Senior Member
 
DarkFire's Avatar
 
Join Date: Oct 2010
Location: London, England
Posts: 1,698
Default

I think this has been an issue for a long time now. Try disabling FFB for the Su-27, that seems to fix it for a number of people.
__________________
CM Storm case | i7 6700k @ 4GHz | MSI GTX1080 | 32GB Kingston Predator PC3000 RAM | SB ZXR sound | TM Warthog stick & throttle | TrackIR 5 | Samsung Evo 850 2TB | Windows 10 Pro 64-bit.

Personal wish list: DCS: Su-27SM.
DarkFire is offline   Reply With Quote
Old 07-16-2018, 02:37 PM   #3
toutenglisse
Member
 
toutenglisse's Avatar
 
Join Date: Jun 2016
Location: French Alps
Posts: 415
Default

Yes flying Su-27 without FFB (with my xbox controller f.e.) is ok. But it's not easy task to ask a FFB owner to fly without it....

With time I got used to this FFB "bug" with Su-27 ..... When entering a mission with Su-27 allready airborne, I push stick forward while I clic "enter cockpit" or I get a "cobra" and wings can tear off if speed is high.
__________________
Hardware : I7 7700K - Z270 gaming M5 - 32GB ( 4x8 ) ddr4 3200Mhz - 1080Ti gaming X - SSD M2 - TM Twcs / TM Rgt yaw pedals / MS sidewinder FF2 - Oculus Rift CV1.
toutenglisse is offline   Reply With Quote
Old 07-16-2018, 02:47 PM   #4
archer86
Member
 
Join Date: Mar 2014
Posts: 340
Default

unfortunately same with my logitech g940. I cannot disable ffb otherwise it will be useless.
both su-33 -27 have this issue
archer86 is offline   Reply With Quote
Old 07-16-2018, 04:45 PM   #5
Banzaiib
Member
 
Join Date: Feb 2016
Location: Atlanta, GA
Posts: 302
Default

The trim is a joke, IMO. You can trim level until close to transonic, then there's not enough trim... but you can activate auto pilot, which levels it out... makes little sense to me.

Furthermore, the trim adjustments are too large, and you end up oscillating... unless there's a trick to it I don't know. Suffice it to say, it's not an enjoyable experience. I wish it was more like trimming the F-5... just enough to let you know it's not a fly-by-wire plane, but not so much that it's fricken annoying.
Banzaiib is offline   Reply With Quote
Old 07-17-2018, 02:08 AM   #6
Weta43
ED Testers Team
 
Weta43's Avatar
 
Join Date: Feb 2005
Location: Aro Valley Wellington New Zealand
Posts: 6,672
Default

Quote:
If you use an FFB stick (MS FFB2 here), you can't trim the plane straight, even at full nose down trim it will lift the nose and needs constant pitch down on the stick, which practically means you're "playing" in the ~ 80% - 100% stick forward area all the time. Basically this renders the plane close to unflyable, at least it's no joy... didn't test the Su-33 though, too scared about it
Do you have curves on your inputs ?

MS FFB2 here too, and the trim works fine - as long as you don't have curves on your controls.
Been said a million times on the boards....
__________________
Cheers.
Weta43 is offline   Reply With Quote
Old 07-18-2018, 02:34 PM   #7
toutenglisse
Member
 
toutenglisse's Avatar
 
Join Date: Jun 2016
Location: French Alps
Posts: 415
Default

Weta43, your question is not for me.... but personnally : no curves in any input, X/Y force axis swapped. (and everything regarding axis or trim or force feedback is working normally)

Problem is not trim not working, problem (if no mistake ?) is that with full trim forward the flanker is still pulling nose up (but maybe there is a "hidden" trim mask applied ? like takeoff trim for F-18 f.e.).

On the side, the flanker has an angular scale drawn just front of control surface. With full forward trim and looking this scale with F2 lateral view, if you let the stick alone, the control surface is showing some degrees downward : so logically the flanker is pointing nose up.
To keep zero angle of control surface you have, in addition to full forward trim, to push stick little more forward.

To me it's not unflyable, but not normal. BTW this could be normal if I'm not aware of things like "trim mask or programm" that I should disable ??

EDIT : but if there was a problem with some "trim programm" applied, this problem would also exists for no FFB device... but it's not.
__________________
Hardware : I7 7700K - Z270 gaming M5 - 32GB ( 4x8 ) ddr4 3200Mhz - 1080Ti gaming X - SSD M2 - TM Twcs / TM Rgt yaw pedals / MS sidewinder FF2 - Oculus Rift CV1.

Last edited by toutenglisse; 07-18-2018 at 03:02 PM. Reason: in post
toutenglisse is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 10:23 AM. vBulletin Skin by ForumMonkeys. Powered by vBulletin®.
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.