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727 Captain >> 727 Captain >> Nosewheel and turning radius
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Message started by MikaelJ on Feb 10th, 2011 at 11:00pm

Title: Nosewheel and turning radius
Post by MikaelJ on Feb 10th, 2011 at 11:00pm
hi there!

Does anybody here have a clue on how to increase the turning radius on the 727? I remember this was possible on the fs9 model.

regards

mikael

Title: Re: Nosewheel and turning radius
Post by Markoz on Feb 11th, 2011 at 1:27am
Hi Mikael.

In the aircraft.cfg navigate to here:

[contact_points]
point.0=1,   51.20,  0.00, -11.45, 1600, 0, 1.323, 45.00, 0.6, 1.30, 0.6, 4.0, 4.0, 0, 230.0, 270.0
point.1=1,  -12.00, -9.20, -11.60, 1600, 1, 2.000,  0.00, 0.4, 1.35, 0.6, 6.9, 6.9, 2, 230.0, 270.0
point.2=1,  -12.00,  9.20, -11.60, 1600, 2, 2.000,  0.00, 0.4, 1.35, 0.6, 7.1, 7.1, 3, 230.0, 270.0

and increase the BOLD RED number. Try any number between 0.00 (no steering capability at all) to 180.00 (the wheel can be steered to 180o).

Hope this helps

Mark

Title: Re: Nosewheel and turning radius
Post by MikaelJ on Feb 11th, 2011 at 7:07am
Hi Markoz!

Thank you very much!

Best regards

Mikael

Title: Re: Nosewheel and turning radius
Post by LOU on Feb 15th, 2011 at 4:36pm
FYI

The nose wheel in the 727 could turn around 78 degrees left or right. There are some things that effect the turn. If you are going too fast, the nose wheel will tend to slide and loose traction. In the real plane if you turned too hard you could roll the tire off the wheel - not good! The CG of the plane would also effect the down pressure on the nose wheel.

Try taxing slower and tap the brake in the direction you want to turn to get a better radius of turn.

Lou

Title: Re: Nosewheel and turning radius
Post by Markoz on Feb 15th, 2011 at 5:47pm
I have often thought of changing the brake system by adding differential brakes. See the line at the bottom.

[brakes]
parking_brake = 1         //Parking brake available
toe_brakes_scale = 0.99  //Brake scalar
auto_brakes = 4
hydraulic_system_scalar = 1  //On brakes dependant on the hydraulic system, ratio hyd system to max brake hyd pressure
differential_braking_scale = 1

They can help quite a lot with turning. Like they do on the 707.

Title: Re: Nosewheel and turning radius
Post by LOU on Feb 15th, 2011 at 7:18pm
The 707 did not have rudder pedal steering, only the tiller or little half wheel to the left of the Captain's seat. The 727 had rudder pedal steering, but only 5 degrees left or right. For tighter turns you used the wheel on the left. In the event of system A hydraulic loss, the nose wheel on the 727 would caster. The 707 would caster too if hydraulic loss, but I seem to remember helping it with tiller in the direction of turn to allow fluid to move through the steering cylinders.

Lou

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