left twist when taking off

[ElsnerMarkus]

left twist when taking off

When taking off from the airfield, my planes always pull to the left, why is that? Do you know the problem?

[Shessi]

Yep, reckon it's your joystick settings out or going out of balance.

You need to re-calibrate your joystick under the Windows game controller setting. If that works then great, if not then maybe a control pot is going wrong. You can fudge that and null some of the effect of that bad pot out, with the calibration programme settings. There are things that can be done to clean the offending pot, look on YouTube, for ways to fix....or is it time for a new joystick???

Cheers

Shessi

[hairyspin]

Depending on which plane you mean, if the realism is turned up to 100%, they will all pull to one side or the other. My Tempest Mk.II pulls really strongly to the right, but it had a 4-blade prop and 2,500 horsepower, so that’s what the original pilots had to contend with too.

[Shessi]

Unfortunately Tom, EM says 'planes' and 'always'......

Cheers

Shessi

[gecko]

Yep, you can count on most CFS3 planes to pull left on takeoff. Everything but jets, or multi-engine propeller aircraft where the propellers are counter rotating, like the P-38. There are also aircraft where the engine turns the opposite direction like the Bf 109, that will pull right on takeoff. Having a big heavy spinning piece of metal on the airframe which in fact does not generate lift evenly across its plane of rotation tends to create aerodynamic issues that the pilot must compensate for. "More right rudder" was a constant phrase from my instructor during my flight training days, and not just at takeoff, until I got the feel of it right. But with these high-powered warbirds we're flying in CFS3, it takes a LOT of right rudder to overcome the pull to the left, and sometimes even some right brake, and that's completely accurate, and not something confined to only a few planes. Like Tom says, it's most of them pulling either left or right. The original pilot's notes for the Spitfire recommend using up to full right rudder trim and right full right rudder on the takeoff roll to keep the airplane straight, and that's relatively low-powered early models! You will find similar instructions in the operating notes for other aircraft. Here's an article that explains some of the details of the aerodynamics involved in what you're observing:

https://www.boldmethod.com/learn-to-...e-ground-roll/

[greycap.raf]

There are also aircraft where the engine turns the opposite direction like the Bf 109, that will pull right on takeoff.

The Bf 109 certainly doesn't pull to the right with the exception of the very first seconds, after that it's a strong tendency to go to the left. It's even reflected in the tail being asymmetric to basically add a lot of right rudder trim by default.

There are aircraft that pull to the right, but this one isn't one of them. Or if it is, something is very wrong.

[gecko]

Right you are, had it in my head the DB engines turned the other way - they don't - so left turning tendencies apply. The point being that if the engine turns counter-clockwise, the left turning tendencies are reversed and are actually right turning tendencies on those aircraft. Griffon-powered Spitfires, Typhoon, Tempest V, D.520 would all exhibit this - but not the 109.

[NachtPiloten]

if you read the pilot notes, they almost always say push the throttle(s) forward slowly to build up speed so the rudder(s) become effective and then full throttle. WW2 planes with the exception of fully loaded bombers (and some underpowered early twins) needed very little runway to get the tail up and lift off (look at the film). Lesson don't jam the throttles past the gates and wrestle the plane, take your time, add a little trim to the rudder and they always fly as they should....good hunting!