Page 1
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 1/18
4 Bar Linkage Calculator v3.0
Vehicle Specifications: Suspension Geometry: Geometry Summary:Wheelbase 108.5 in pper Links x y z Static Anti-Squat 95 %
Tire Diameter 9.50 in !rame "n# $.00 1.00 $.00 in &ll 'enter (ei)ht $* in
Tire &llin) a#ius 19.*5 in Axle "n# 0.00 $.00 $8.00 in &ll Axis An)le $ #e)rees +&ll ,erste
/ehicle ' (ei)ht .00 in Lo!er Links x y z 2nstant 'enter 3-Axis 11 in
/ehicle 4ass $00 lb !rame "n# *.00 .00 $8.00 in 2nstant 'enter 6-Axis 7 in
!r&nt nsrun) 4ass 800 lb Axle "n# .00 $$.00 19.*5 in
ear nsrun) 4ass *00 lb
T
Page 2
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 2/18
4 Bar Linkage Calculator v3.0 = e>erence
/ehicle ' .00
Srun) 4ass ' 1.9$ in
Anti-Squat ' 7.85 in
Suspension Geometry:
pper Links x y z
!rame "n# $.000 1.000 $.000 in
Axle "n# 0.000 $.000 $8.000 in
/ect&r $.000 11.000 .000 in
:en)th .0* in
nit /ect&r 0.991 0.$$8 0.11* 1.0000
2ntercet -5.818$ $.0000 $8.0000 in
&ll ?&int -5.818$ 0.0000 $*.$*$* in
!&rce $118.099 lb +Tensi&n
!&rce /ect&r 017.77 1078.*50 **0.55 lb
/ertical Sl&e 0.8 in@in
(&riz&ntal Sl&e 0.1$50 in@in
Lo!er Links x y z
!rame "n# *.000 .000 $8.000 in
Axle "n# .000 $$.000 19.*50 in
/ect&r .000 -19.000 8.$50 in
Page 3
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 3/18
Trael Am&unt 0.00 in Trael 0.00 in ini&n an)le chan)e 0.00
Static Geometry: Bump Geometry:
pper Links x y z pper Links x y z
!rame "n# $.000 1.000 $.000 in !rame "n# $.000 1.000 $.000 in Axle "n# 0.000 $.000 $8.000 in Axle "n# 0.000 $.000 $8.000 in
/ect&r $.000 11.000 .000 in /ect&r $.000 11.000 .000 in
:en)th .0* in :en)th .0* in
Searati&n 8.**9 Searati&n 8.**9
0.000 in
nit /ect&r 0.991 0.$$8 0.11* 1.0000 nit /ect&r 0.991 0.$$8 0.11* 1.0000
2ntercet -5.818$ $.0000 $8.0000 in 2ntercet -5.818$ $.0000 $8.0000 in
&ll ?&int -5.818$ 0.0000 $*.$*$* in &ll ?&int -5.818$ 0.0000 $*.$*$* in
/ertical Sl&e 0.8 in@in /ertical Sl&e 0.8 in@in
(&riz&ntal Sl&e 0.1$50 in@in (&riz&ntal Sl&e 0.1$50 in@in
:in< !&rce 55 lb :in< !&rce 55 lb
Lo!er Links x y z Lo!er Links x y z
!rame "n# *.000 .000 $8.000 in !rame "n# *.000 .000 $8.000 in
Axle "n# .000 $$.000 19.*50 in Axle "n# .000 $$.000 19.*50 in
/ect&r .000 -19.000 8.$50 in /ect&r .000 -19.000 8.$50 in
:in< :en)th 8.7$ in :in< :en)th 8.7$ in
nit /ect&r 0.908 -0.90* 0.1797 1.0000 nit /ect&r 0.908 -0.90* 0.1797 1.0000
2ntercet 5.9* $.$95 19.188 in 2ntercet 5.9* $.$95 19.188 in
&ll ?&int 5.9* 0.000 $9.0 in &ll ?&int 5.9* 0.000 $9.0 in
/ertical Sl&e -0.18 in@in /ertical Sl&e -0.18 in@in
(&riz&ntal Sl&e 0.18*5 in@in (&riz&ntal Sl&e 0.18*5 in@in
:en)th0-:en)th
1
Page 4
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 4/18
Bum
?a)e
Page 5
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 5/18
Bum
?a)e 5
0.9$871991
Page 6
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 6/18
Bum$
?a)e 7
Page 7
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 7/18
Bum$
?a)e *
0.1$1*0**
Page 8
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 8/18
4 Bar Linkage Calculator v3.0 Accelerati&n 7.00 )
"aterial Selection:
pper Links Lo!er Links,utsi#e Diameter 1.500 in ,utsi#e Diameter 1.*50 in
Wall Thic<ness 0.188 in Wall Thic<ness 0.$50 in
4aterial se# Alum $0$-T7 4aterial se# Steel 10T&# "n# ate# :&a# 55000 lb &# "n# ate# :&a# 55000 lb
4&#ulus &> "lasticity 10500000 si 4&#ulus &> "lasticity $9*00000 si
Ciel# Stren)th 50000 si Ciel# Stren)th 110000 si
Density 0.1000 lbm@in Density 0.$80 lbm
4&ment &> 2nertia 0.1*0 in 4&ment &> 2nertia 0.1 in
Area 0.**5 in$ Area 1.1*8 in$
?yiel# 8*5 lb ?yiel# 1$9591 lb
?buc<lin) 15188 lb ?buc<lin) $$0* lb
?ben#in) 1$ lb ?ben#in) 5$1 lb
:in< :en)th .0*5 in :in< :en)th 8.719 in
:in< Wei)ht $.7 lb :in< Wei)ht 17.$* lb
:in< !&rce $118 lb +Tensi&n :in< !&rce -$8 lb +
!.S. Ciel# 1.$1 +lin< stretchin) !.S. Ciel# $.9 +lin
!.S. Buc<lin) 0.* +lin< buc<lin) un#er bra<in) !.S. Buc<lin) 0.95 +lin
!.S. Ben#in) 0.7 +s&me;hat irreleant >&r an ??" lin< !.S. Ben#in) 1.78 +lin!.S. &# "n# 1.*1 +r&# en# brea<in) !.S. &# "n# 1.$ +r&#
"aterial Specifications:
"lastic 4&#ulus Ciel# Density
+si Stren)th +:bs@in
Alum $0$-T7 10500000 50000 0.1000
Alum 7071-T7 10000000 9900 0.09*5
Alum *0*5-T7 1000000 *$00 0.10$0
Steel 1018 $9000000 50000 0.$80 '&l# Dra;n
Steel 10E $9*00000 7100 0.$80 E&rmalize#
Steel 10T $9*00000 110000 0.$80 Water Fuenche# an# Temere#
Steel 0E $9*00000 11000 0.$80 E&rmalize#
Steel 0T $9*00000 170000 0.$80 ,il Fuenche# G Temere#
Titanium 7Al-/ 17500000 1$8000 0.1700 7% Aluminum % /ana#ium
Page 9
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 9/18
4 Bar Linkage Calculator v3.0
Page 10
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 10/18
'reate# $00.1$.0
by
Dan Barcr&>t
tria)e#H)mail.c&m
Page 11
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 11/18
4 Bar Linkage Calculator v3.0Si#e Vie! $op Vie!
!r&nt Tire ear Tire 2' Trace er 2n>inity $1*0 ,>>set
an)le x z x z x z ear Axle .00 er :in<
0 108.50 0.00 0.00 0.00 $.00 $.00 x z x
15 10.9 0.7* 5.11 0.7* 11.00 5.7 0.00 $1.*5 $.000 98.7 $.75 9.88 $.75 2' Trace :&;er 1.00 $1.8 0.00
5 9.5 5.*8 1.9* 5.*8 x z 1.* $0.*5 $.00
70 91.0 9.88 1*.10 9.88 *.00 $8.00 $.00 19.*5 0.00
*5 89.$ 1.7 19.08 1.7 11.00 5.7 1.* 18.*5 2' Trace
90 88.*5 19.*5 19.*5 19.*5 Anti-Squat :ine 1.00 18.0$ x
105 89.$ $.87 19.08 $.87 x z 0.00 1*.*5 0.00
1$0 91.0 $9.7 1*.10 $9.7 0.00 0.00 -1.00 18.0$ -5.8$
15 9.5 .*$ 1.9* .*$ 11.00 5.7 -1.* 18.*5 -5.8$
150 98.7 7.85 9.88 7.85 108.50 5.11 -$.00 19.*5 0.00
175 10.9 8.8 5.11 8.8 Anti-Squat ' -1.* $0.*5 :&;er :in<
180 108.50 9.50 0.00 9.50 x z -1.00 $1.8 x
195 11.71 8.8 -5.11 8.8 -$0.00 7.85 0.00 $1.*5 *.00$10 118.8 7.85 -9.88 7.85 1$0.00 7.85 .00
$$5 1$$.* .*$ -1.9* .*$ 100% AS :ine *.00
$0 1$5.70 $9.7 -1*.10 $9.7 x z .00
$55 1$*.58 $.87 -19.08 $.87 0.00 0.00 2' Trace :
$*0 1$8.$5 19.*5 -19.*5 19.*5 108.50 7.85 x
$85 1$*.58 1.7 -19.08 1.7 &ll Axis *.00
00 1$5.70 9.88 -1*.10 9.88 x z 5.95
15 1$$.* 5.*8 -1.9* 5.*8 -5.8$ $*.$* 5.95
0 118.8 $.75 -9.88 $.75 0.00 $*.* *.00
5 11.71 0.7* -5.11 0.7* 5.95 $9.0
70 108.50 0.00 0.00 0.00
:&;er :in<s :&;er :in<s er :in<s
ear Tire er :in<s :&;er :in<s 2'
100% AS :ine &ll 'enter 2nstant 'enter e
Page 12
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 12/18
-$0.00 0.00 $0.00 0.00 7
Page 13
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 13/18
'reate# $00.1$.0
80.00 by
Dan Barcr&>t
y yI
1.00 9.00$.00 8$.00
-1.00 7*.00
-$.00 *8.00
er
y
$.00 8$.00
0.00 80.00
0.00 80.00
-$.00 *8.00
y
.00 8.00$$.00 10$.00
-.00 **.00
-$$.00 58.00
;er
y
.00 8.00
0.00 80.00
0.00 80.00
-.00 **.00
tria)e#H)mail.c&m
er :in<s 2' Trace er 2' Trace :&;er Tires
race er 2' Trace :&;er Anti-Squat :ine Anti-Squat '
r Axle &ll Axis
Page 14
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 14/18
.00 80.00 100.00 1$0.00 10.00
Page 15
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 15/18
Page 16
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 16/18
Page 17
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 17/18
4 Bar Linkage Calculator v3.0%evision Control &istory
Version Changes / Enhancements
'.( Corrections to the roll center calculation.
Additional "unit" descriptors added.
Added Coordinate System Diagram Sheet
).0 Added Graphical Display
Flipped Coordinate System Drawing to Match Graphical Display
Fixed Typos in comments
Moved Cells and emoved !lan #ines
Fixed $nits in Material Specs
3.0 Added !ump%Droop travel calculation sheet w% macro
earranged to mae it less cluttered and more user &riendly
Added Calculation o& Sprung Mass CG ' Anti(S)uat CG *CG ( rear axle+
Changed all calculations that used CG to Anti(S)uat CG
Fixed ,rrors -hen !ars are arallel
Added Automatic Display o& oll $ndersteer%/versteer
Saved as ,xcel 0.1%23 File
3.0c Added drivesha&t angle and plung calculations *not completed4+
Fixed Anti(S)uat CG 5eight Calculation
3.' Changed travel calculations to not re)uire solver add(in
Added travel chart to &ront page
Added travel specs to &ront page
're
tria
Page 18
8/13/2019 4Bar Linkage Calculator
http://slidepdf.com/reader/full/4bar-linkage-calculator 18/18
Date
$00.1$.05
$00.01.0*
$00.1$.0
$005.0.01
$00*.05.08
eisi&n by 'hris 4ac&c< +/etteb&y*9
ate# $00.1$.0
by
Dan Barcr&>t
)e#H)mail.c&m