F.e.e.l. Spring Tension System - Logitech X56 HOTAS User Manual

F.E.E.L. Spring Tension System

Each spring placed on the Rhino stick shaft will give a different feeling. You can also operate
the stick without a spring, providing a total of five different forces.
Each spring has a unique feel and different identification. These identifiers are color swatches
at the top of each spring – Red, Yellow, Blue, and Green. This table lists some of the calculations
used for differentiation:
k = Rate
OD = Outside diameter
d = Wire diameter
E = Youngs Modulus ( 210000 )
FL = Free length
WL = Working length
P1L = Position 1 length
n = Total Number of coils
D = Mean Diameter
Rate K= Ed*4 / 8n D *3
Load @ Breakout BL = FL-WL x k
Load @ P1L SoL = FL - SL x k
Stress= 8 x P x D / 3.14 x d *3
% UTS ( M4 Music Wire )
RED GREEN
1 2
33 33
1.8 1.8
210000 210000
52 47
30.8 30.8
25.8 25.8
4.5 4.5
31.2 31.2
1.70 1.70
36.12 27.60
44.64 36.12
608.50 492.38
30.89 24.99
English 8
YELLOW BLUE
3 4
33 33
1.8 1.8
210000 210000 N/mm2
42 36 Un-compressed
30.8 30.8 Pre-compressed
25.8 25.8 Full Working Compression
4.5 4.5 Active coils (6.5 coils in spring)
31.2 31.2
1.70 1.70 N/mm
19.08 8.86 N
27.60 17.38 N
376.25 236.90 N/mm2
19.10 12.03 %
Notes