As you know ground steering (at least in the TBM and Citation L) changes abruptly as speed gets around 7 or so mph--seems like the turning radius goes from Subaru grade to Stretch Limo as you exceed that threshold.  Any way to change this globally, or perhaps mod by mod per plane?

Thanks

This solution works with FSUIPC7.

If I remember correctly to get the best results with pedals is to select >nose wheel> for rudder in FSUIPC axe and rudder with pedals as axis in MSFS.

That gives me a better turning radius: the nose wheel is be effective at low speed and the rudder axis will take control afterwards.

Works very well here.

Worked many hours for this solution.

Hope it helps

If you haven't tried it yet, the TBM930 Improvement Mod gives you exquisite ground handling.  I find I can turn the TBM on a dime now.

It is a known sim issue, however it is worth noting that setting takeoff trim properly in some aircraft can alleviate the twitchiness. 

A classic case in point is the JF Arrow which if you set it to remember past state will keep your last elevator trim setting (but not rudder trim ? ... go figure).   This means if you landed last time and forgot to reset trim back to neutral on shutdown, you suddenly have a very unhappy aircraft on takeoff next spawn unless you reset trim to TO as part of your pre-flight.  The Arrow with nose up trim on take-off is all over the shop, not a happy camper at all.

15 minutes ago, Glenn Fitzpatrick said:

It is a known sim issue, however it is worth noting that setting takeoff trim properly in some aircraft can alleviate the twitchiness. 

A classic case in point is the JF Arrow which if you set it to remember past state will keep your last elevator trim setting (but not rudder trim ? ... go figure).   This means if you landed last time and forgot to reset trim back to neutral on shutdown, you suddenly have a very unhappy aircraft on takeoff next spawn unless you reset trim to TO as part of your pre-flight.  The Arrow with nose up trim on take-off is all over the shop, not a happy camper at all.

I'm only referring to the fact the turning radius changes abruptly at about 6-8mph in the 3 aircraft I'm using, so nothing to do with 'twitchiness' it's really consistent.  Below that threshold the turning radius is much tighter and above much looser.  By the time I'm over the threshhold it's consistent and has no influence on TO dynamics.  But thanks for the information Glenn.

44 minutes ago, RandallR said:

If you haven't tried it yet, the TBM930 Improvement Mod gives you exquisite ground handling.  I find I can turn the TBM on a dime now.

I haven't, so thanks for the tip.  Thusfar I've tried to avoid mods of any kind, and right now I'm spending all time in the Citation L.  This suggests there is some parameter that can influence turning radius, so that is what I'm looking for it would seem.  

6 hours ago, Glenn Fitzpatrick said:

It is a known sim issue, however it is worth noting that setting takeoff trim properly in some aircraft can alleviate the twitchiness. 

A classic case in point is the JF Arrow which if you set it to remember past state will keep your last elevator trim setting (but not rudder trim ? ... go figure).   This means if you landed last time and forgot to reset trim back to neutral on shutdown, you suddenly have a very unhappy aircraft on takeoff next spawn unless you reset trim to TO as part of your pre-flight.  The Arrow with nose up trim on take-off is all over the shop, not a happy camper at all.

Strange, I use state saving and the elevator trim are reset for me, I know because I check it every time.

As stated upthread, installing the TBM improvme

6 hours ago, Noel said:

Thusfar I've tried to avoid mods of any kind, and right now I'm spending all time in the Citation L. 

Huh? Why? And the Citation Longitude isn't really all that great without the mods. 

24 minutes ago, Ixoye said:

Strange, I use state saving and the elevator trim are reset for me, I know because I check it every time.

Interesting i will double check in case I am messing something up.

5 hours ago, Ricardo41 said:

As stated upthread, installing the TBM improvme

Huh? Why? And the Citation Longitude isn't really all that great without the mods. 

I've avoided all mods to reduce risk for issues w/ everything including CTD which I've never had.   Plus, I'm generally very happy w/ the stock CL.  Ricardo if you don't mind, can you give me a couple of hints as to what the 'mods' add for you for the CL?

On 4/24/2021 at 10:09 PM, Noel said:

changes abruptly as speed gets around 7 or so mph--seems like the turning radius goes from Subaru grade to Stretch Limo as you exceed that threshold. 

Maybe they simulate, that the tires above a threshold speed loose grip and start sliding? Which would explain the abrupt change?

1 hour ago, Noel said:

I've avoided all mods to reduce risk for issues w/ everything including CTD which I've never had.   Plus, I'm generally very happy w/ the stock CL.  Ricardo if you don't mind, can you give me a couple of hints as to what the 'mods' add for you for the CL?

Here is a summary of the changes (not the latest version; download the latest version from the link below. 

Version 1.80 Changes:
 

Significant changes to engine parameters to achieve improved, "on the numbers", climb performance at various aircraft weights. Aircraft should follow Cessna spec climb profiles (300 IAS to intercept Mach 0.8 - 457 to 460 KTAS for high speed climb, for example). The aircraft should be able to intercept M0.8 and hold this speed for a climb of approx. 23 minutes to FL430 at MTOW and 16 minutes to FL430 at a takeoff weight of 33k lbs. Climb profile used in Cessna's testing for high speed climb is 290 KIAS to 10k feet (unrestricted climb), 300 KIAS to intercept with M0.8 (at approx. FL300) and hold M0.8 to cruise altitude.   

Adjusted engine thrust output as a function of N1 to bring this much closer to real world published N1 / performance results. The range of N1 values needed to maintain specific airspeeds, in particular at cruise, is quite narrow. This update improves performance to replicate this more narrow band of N1 vs thrust performance. 

Adjusted PID values for autothrottle to improve speed capture and hold speeds in general and with narrower N1 / thrust banding. There will be more/faster throttle lever movements and adjustments, especially at lower altitudes and airspeeds. This is somewhat experimental at this time.   

Adjusted aircraft lift paramaters to bring aircraft closer to real world V-speeds.

Further adjustments to stall speed boundaries and aoa limits. However, achieving realistic stall performance at the manufacturer tested speeds has not been possible without disrupting other significant aspects of aicraft performance - the sim doesn't read all values in the lift coeffiecient aoa table entries which makes this effort somewhat limited.

Slightly increased elevator authority to increase pitch control, especially at lower speeds like during takeoff and approach. 

Corrected flaps lift coefficient after Asobo update from Feb. 16, 2021. 

Corrected missing altitude alert callouts in OnAir version.

__________________________________________________________________________________________________________________________________________________________________________________________________________________________________Basically you can now fly it pretty much "by the numbers" - vref and vapp are now close to specs. Also, the latest version doesn't require messing around with core files. 

The author writes: "The instructions for installation have changed and are simpler now. There is no longer a need to replace / overwrite the Longitude official layout.json file when installing this modification package"

Link to file and info:

https://flightsim.to/file/3655/asobo-cessna-citation-longitude-flight-dynamics-modifications-project-version-1-0

Don't forget the WT G3000 mod:

https://packages.workingtitle.aero/g3000/

Using the improvement mod, I was able to squeeze out close to 7 hours of range. vertical speed mode, flch mode, lateral navigation, ils and rnav approaches work - within the limiations of MSDS 2020 - as expected. AT works without any issues. Pitch and trim work predictably. 

 

Edited April 26, 20215 yr by Ricardo41

2 hours ago, Noel said:

I've avoided all mods to reduce risk for issues w/ everything including CTD which I've never had.   Plus, I'm generally very happy w/ the stock CL.  Ricardo if you don't mind, can you give me a couple of hints as to what the 'mods' add for you for the CL?

I'll second what Ricardo41 said - Darkfly mod makes an absolute world of difference and never had a CTD with it. Worth considering the Working Title G3000 (which also improves the G5000) mod....

 

Finally - if you are interested in business jets and haven't used mods yet - get the Working Title CJ4, it's literally already the best business jet I have seen in a flighsim and still being worked on....

 

G

 

PS: I was very much "No Mods" until someone here mentioned the WT CJ4 - tried that and haven't really touched my fleet of business jets in P3D since.......

That's compelling!  Help me if you will w/ one piece on this as a mod-adverse person:  how do I install these mods I've never done it!

Thanks I will try this once I learn how it's done!

Cheers

12 minutes ago, Noel said:

That's compelling!  Help me if you will w/ one piece on this as a mod-adverse person:  how do I install these mods I've never done it!

Thanks I will try this once I learn how it's done!

Cheers

 

You just have to unzip them into the "Community" folder....

Then they are ready to go !! It's a big improvement on the previous system in FS / P3D !!!

G