2 min turn and turn and slip indicator?

[Theloaf]

In a holding pattern, you need to do 2 min turns. How exactly do I use the turn and slip indicator for this? Do I put the turn indicator between the center and the white arrows on the side? Or do I line it up with the arrows? 

[bonesvf103]

I've tested and timed it and it appears that yes putting it right between those 2 markers seems to be the right place.

 

You can check yourself by this way:  a 2 minute turn means you do 360 degrees of turn in 2 minutes, or 3 degrees per second.  So make a turn and count off seconds and if you change 9 degrees of heading in 3 seconds, you are in a 2 minute turn.  In more round, easier to approximate numbers, make it 10 degrees of heading every 3 seconds and it's close enough.  10 degrees is easier to measure on your heading tape or compass rose than 9 degrees.

 

v6,

boNes

 

 

Edited February 28, 2021 by bonesvf103

[Spiceman]

You don’t *need* to do two minute turns. Faster aircraft are incapable of two minute turns given that you don’t want to exceed 30 degrees AOB in IMC and anything over a TAS of about 220 knots will require more than that. Higher performance aircraft typically do half standard rate. Holding patterns will require either a particular leg length or a particular inbound leg time to the holding fix. As for turn rate, the rule is standard rate (1/2 standard rate if you choose) or 30 degrees AOB whichever occurs first. 

[sLYFa]

One needle-width of deflection gives you 360° in 4min