BACKGROUND When I first installed FSX I was able to forward slip the FSX J3, which was the only aircraft I used. After a couple of weeks, I unexpectedly found that I could no longer perform the forward slip. I am not asking for help with the technique for performing a forward slip. I am seeking help with what I believe is a technical problem. PROBLEM Regardless of the amount of aileron used, I cannot create enough offsetting rudder force to maintain a slip. The best I can get is a slow slipping turn in the direction of bank. Reducing the amount of aileron applied, while holding full opposite rudder, reduces but does not stop the turn in the direction of the bank. If I apply a small amount of aileron, e.g. for a 10-15 degree turn, any opposite rudder applied just cancels the bank. WHAT I HAVE DONE · I have tried, unsuccessfully, to execute a forward slip in the following aircraft: A2A Cub, FSX J3, FSX 172 and the Justflight 152. · I have experimented with various control settings in FSX for my CH yoke and rudder pedals. I see full travel of the rudder using the CH and FSX calibration tools. All calibration has been done in the CH tool only. I have also disconnected the rudder pedals and used the keyboard rudder controls. The result is the same. During all of these tests I see full deflection of the rudder from external and internal views of the aircraft. · The problem persists regardless of the realism settings, from easy to hard with all settings to the right. The result is the same, even with the A2A Cub, which does an excellent job of modeling a forward slip. In regards to the A2A Cub, I have read the relevant posts on the forum concerning problems with forward slips and have ensured that all of the realism settings are correct. I have also applied the 1.1 and 1.11 fixes. · All of this led me to the conclusion that the problem could be in FSX. So, I uninstalled FSX completely, along with the CH drivers and then did a clean reinstall. After the reinstall, I have the same problem. Any suggestions would be greatly appreciated.

OlyRIn order for CH Pedals to work correctly in FSX you need to set all rudder/brake axes sensitivity full right and null zone full left.Make sure that you do NOT have any duplicate axes - FSX is sneaky and will assign an axis to the mouse for instance!:Just Kidding:If you are using FSUIPC4 make sure that again you have no duplicate axes with it and FSX. Bob Church is the guru on CH Hangar Forum if the above doen't solve the issue.The other question if you are using CH Manager in "mapped" mode and an assignment there might be conflicting you could try it in "direct" mode (or not at all) to see if that helps.RegardsPeterH

May be a dumb suggestion, but you didn't mention it - is the Autorudder box in Realism checked?

Try using FSUIPC and disable all other calibration software.Bjorn

PeterH:I have followed your suggestions and the problem remains.Thanks for your reply and the suggestion to follow up with Bob Church, which I will do.Paul J:Autorudder is not checked. That was a not a dumb suggestion. Things like that happen all of the time.Bjorn:I would like to avoid adding FSUIPC at this time. However, it would be a last resort option if all else fails.OlyRick

What do you mean by forward slip?

...Bjorn:I would like to avoid adding FSUIPC at this time. However, it would be a last resort option if all else fails.OlyRick

Why avoid probably one of the most significant tools for FS?B

What do you mean by forward slip?

A forward slip is a technique used to quickly lose altitude without gaining much airspeed. It works by decreasing engine power to idle, inputing full rudder (usually into the wind), and compensating with opposite aileron to keep the airplane aligned with the runway. The aircraft will then descend without gaining much airspeed due to the increased drag on the airframe.

A forward slip is a technique used to quickly lose altitude without gaining much airspeed. It works by decreasing engine power to idle, inputing full rudder (usually into the wind), and compensating with opposite aileron to keep the airplane aligned with the runway. The aircraft will then descend without gaining much airspeed due to the increased drag on the airframe.

That's a sideslip or crab, Shane: to add the considerable drag of a forward slip one needs to push rudder against the prevailing wind - presenting a greater fuse area, and then add whatever opposite bank is necessary to hold the descent course to the runway.

That's a sideslip or crab, Shane: to add the considerable drag of a forward slip one needs to push rudder against the prevailing wind - presenting a greater fuse area, and then add whatever opposite bank is necessary to hold the descent course to the runway.

But according to the Chapter 7 of the FAA Airplane Flying Handbook Chaper 8 pages 10 and 11 side slip and forward slip are the same.http://www.faa.gov/l...083-3a-4of7.pdf

... agree - as long as there's no cross-wind component. If one has the correct approach height, but with a, say 020deg wind on rwy 36, then we might simply crab - rt rudder (into the breeze), a touch of left aileron, and simply slip down the glideslope: but if we're say, high and short, without flaps, perhaps in a Pitts, then one would lower the stbd (upwind)wing into the wind and apply a bootfull of port rudder. I've done this many times in the Chippie, (also almost to knife-edge in a Sweitzer 2.32) and one will lose an awful amount of height very quickly with not too much speed. If one were to apply upwind rudder it simply wouldn't work.

That's a sideslip or crab, Shane: to add the considerable drag of a forward slip one needs to push rudder against the prevailing wind - presenting a greater fuse area, and then add whatever opposite bank is necessary to hold the descent course to the runway.

It's a forward slip when it is done with the power at idle, but I did have the rudder direction backwards. Anyways, when I do it in real life I usually try both directions if I have the time.

It's a forward slip when it is done with the power at idle, but I did have the rudder direction backwards. Anyways, when I do it in real life I usually try both directions if I have the time.

Correct! :(

Correct! :(

It sure is a lot of fun!

By default FSX is not very good at simulating a proper sideslip. This is because the vertical tailplane stability is set tightly and any attempt to overcome it with rudder is counteracted by the inherent weathervaning properties of FSX's (and FS9's) aerodynamics. In FSX this was tightened up even more compared to earlier versions of FS. In order to overcome this a complete re-design of the rudder and yaw stability parameters is needed. We successfully did this as far back as 2001 and all our aircraft are capable of a proper cross-controlled side slip, with or without power.However even sideslip on aircraft that are capable of it needs to have the general flight model slider in the aircraft realism properties placed at the MAXIMUM point, and that means fully right. Any position left of maximum will disable the propensity to sideslip where an aircraft would otherwise be capable of it, because less than max simplifies the flight model (it also makes rolling quicker and more arcade-like).Rob - RealAir