Πόσο βοηθάει....

[McZab]

Αρχικά δημιουργήθηκε από Cpt. Haddock
Καλά τα είπες, αλλά έκοψες το πάρτι

:rotflmao: :rotflmao:

Δεν μπορείς να "στήσεις" πάρτυ σε επιστημονικό θέμα...Τα πάρτυ τα στήνεις πάνω σε απόψεις του τύπου "Γιατί να υπάρχουν τα TDM", "ποιοι οδηγοί έχουν μεγαλύτερη ανάγκη τη φυσική, των TDM ή οι άλλοι", κτλ...

ΥΓ. Έχουν τελειώσει κι άλλοι το Φυσικό ή μου φάνηκε...?

[sniper]

Αρχικά δημιουργήθηκε από McZab
:rotflmao: :rotflmao:



Δεν μπορείς να "στήσεις" πάρτυ σε επιστημονικό θέμα...Τα πάρτυ τα στήνεις πάνω σε απόψεις του τύπου "Γιατί να υπάρχουν τα TDM", "ποιοι οδηγοί έχουν μεγαλύτερη ανάγκη τη φυσική, των TDM ή οι άλλοι", κτλ...

Νομίζεις.....

Αρχικά δημιουργήθηκε από McZab

ΥΓ. Έχουν τελειώσει κι άλλοι το Φυσικό ή μου φάνηκε...?

Δεν έχει σημασία.... εδώ μέσα όλοι έχουμε τελειώσει το Παντεπιστήμιο :rotflmao: :rotflmao:

[motard]

twra sovara... den eimai pro !
uparxei kapoio vivlio pou einai afieromeno stin mixani kai na milaei gia tin fisiki?
gia to otidipote einai panw stin mixani..
an xerete
euxaristw

[sniper]

Αρχικά δημιουργήθηκε από motard
twra sovara... den eimai pro !
uparxei kapoio vivlio pou einai afieromeno stin mixani kai na milaei gia tin fisiki?
gia to otidipote einai panw stin mixani..
an xerete
euxaristw

Στείλε ένα ΠΜ στον oldman.

[Cpt. Haddock]

[McZab]

Αρχικά δημιουργήθηκε από motard
twra sovara... den eimai pro !
uparxei kapoio vivlio pou einai afieromeno stin mixani kai na milaei gia tin fisiki?
gia to otidipote einai panw stin mixani..
an xerete
euxaristw

Αυτό που έχω διαβάσει εγώ είναι αυτό
"Motorcycle Handling and Chassis Design"
Tony Foale

Δεν μιλάμε για βιβλίο επάνω στην οδήγηση αλλά καθαρά επάνω σε ανάλυση δυνάμεων, κτλ.

[motard]

Αρχικά δημιουργήθηκε από Cpt. Haddock

kai auto mou einai polu xrisimo !!

[sniper]

Αρχικά δημιουργήθηκε από motard
kai auto mou einai polu xrisimo !!

Μόλις το τελειώσεις δώστο στον Αμάνικο....

[McZab]

Για να πάρεις μια ιδέα, αυτά είναι τα περιεχόμενα.

Contents

1 Function and history
Some basic definitions ................................................. 1-1
Function....................................................................... 1-3
History ......................................................................... 1-4
Front suspension ....................................................... 1-16
Rear suspension........................................................ 1-23
Spring types............................................................... 1-29
Load Compensation................................................... 1-30

2 Tyres
Weight support............................................................. 2-2
Suspension action ....................................................... 2-4
Tyre stiffness or spring rate.......................................... 2-8
Contact area .............................................................. 2-11
Area when cornering.................................................. 2-15
Friction (grip).............................................................. 2-15
Braking & driving........................................................ 2-17
Cornering................................................................... 2-17
Mechanisms of grip.................................................... 2-17
Under- and over-steer................................................ 2-27
Construction............................................................... 2-32
Materials .................................................................... 2-34
Summary ................................................................... 2-34

3 Geometric considerations
Basic motorcycle geometry .......................................... 3-1
Trail ............................................................................. 3-1
Rake or castor angle (steering axis inclination) ............ 3-5
Wheelbase................................................................. 3-15
Wheel diameter.......................................................... 3-16
Other considerations.................................................. 3-18
Angular motions......................................................... 3-22

4 Balance and steering
Balance........................................................................ 4-1
Steering ....................................................................... 4-3
Gyroscopic effects only................................................ 4-9
Gyroscopic with tyre camber force only...................... 4-12
Gyroscopic with tyre camber and steer forces............ 4-14
Tyre forces only – no gyroscopic effects. ................... 4-18
Body lean only – no steering...................................... 4-20
Conclusions: .............................................................. 4-23

5 Aerodynamics
Drag............................................................................. 5-1
Evolution of the racing fairing....................................... 5-9
Internal air flow .......................................................... 5-10
Lift.............................................................................. 5-11
Airflow evaluation....................................................... 5-18
Side wind stability (traditional view)........................... 5-21
Steady state directional stability. ................................ 5-24
Dynamic directional stability....................................... 5-28
Summary ................................................................... 5-31
Contents 3

6 Suspension principles
Springs ........................................................................ 6-1
Damping ...................................................................... 6-8
Sprung and unsprung mass ....................................... 6-21
Basic suspension principles ....................................... 6-21
Other factors.............................................................. 6-31
Lateral suspension..................................................... 6-42
Summary ................................................................... 6-49

7 Front suspension
Head stock mounted forks ........................................... 7-1
Alternatives to the head stock mounted fork............... 7-13
Hub centre steered .................................................... 7-14
Double link................................................................. 7-18
McPhearson strut based ............................................ 7-27
Virtual steering axis.................................................... 7-31

8 Rear suspension
Effective spring rate ..................................................... 8-3
Chain effects.............................................................. 8-11
Wheel trajectory......................................................... 8-15
Structural ................................................................... 8-16
Single or dual sided ................................................... 8-19
Summary ................................................................... 8-26
4 Contents

9 Squat and dive
Load transfer................................................................ 9-1
Squat and dive............................................................. 9-4
Shaft drive ................................................................... 9-4
Chain drive ................................................................ 9-13
Aerodynamic squat .................................................... 9-25
Braking reaction (rear) ............................................... 9-26
Dive (front)................................................................. 9-29
Dynamic effects ......................................................... 9-37
Summary ................................................................... 9-47

10 Structural considerations
Fatigue....................................................................... 10-1
Structural efficiency.................................................... 10-1
Triangulation.............................................................. 10-2
Beam frames ............................................................. 10-5
Triangulated frames................................................... 10-9
Tubular backbone .................................................... 10-11
Structural comparison…………………………………..10-12
Fabricated backbone ............................................... 10-14
Monocoque.............................................................. 10-15
Structural engine...................................................... 10-17
Conventional multi-tubular ....................................... 10-20
Twin-spar................................................................. 10-23
Other types .............................................................. 10-27
Summary ................................................................. 10-28

11 Engine Mounting
Contents 5

12 Braking
The basics ................................................................. 12-1
Effects of CoG height................................................. 12-7
Generation of torque .................................................. 12-9
Hardware................................................................. 12-10
Discs........................................................................ 12-11
Calipers ................................................................... 12-14
Pads ........................................................................ 12-15
Linked brakes .......................................................... 12-15
ABS ......................................................................... 12-17

13 Materials and properties
Typical properties of some common materials ........... 13-3
Frame ........................................................................ 13-5
Wheels....................................................................... 13-8
Fuel tank.................................................................. 13-13
Brake discs .............................................................. 13-13
Bodywork................................................................. 13-13

14 Stability & control
Under-/over-steer....................................................... 14-2
High-siding................................................................. 14-7
Stability under braking ............................................... 14-9
Instabilities............................................................... 14-10
Damping .................................................................. 14-14

[McZab]

15 Performance measurement
Track side .................................................................. 15-1
Laboratory ................................................................. 15-9
Strength analysis ....................................................... 15-9
Measurement and simulation ................................... 15-12
Future development................................................. 15-14
6 Contents

16 Practical frame building
Welding...................................................................... 16-1
Distortion ................................................................... 16-3
Gussets ..................................................................... 16-5
Jigging ....................................................................... 16-6
Tube profiling............................................................. 16-8
Tube types................................................................. 16-9
Tube sizes ............................................................... 16-10
Frame finishes ......................................................... 16-11
Design layout........................................................... 16-12

17 Case study
Measurement............................................................. 17-2
Main frame................................................................. 17-2
Engine mounting........................................................ 17-5
Results....................................................................... 17-5
Material...................................................................... 17-5
Swing arm.................................................................. 17-5
Forks ......................................................................... 17-6
Caution ...................................................................... 17-6
Tuning........................................................................ 17-6

18 Future developments
The status quo ........................................................... 18-1
Future possibilities ..................................................... 18-2
Active suspension...................................................... 18-2
Rheological Fluids...................................................... 18-4
Two wheel drive (2WD).............................................. 18-4
Two wheel steering (2WS) ......................................... 18-8
Feet-Forward motorcycles. (FF).............................. 18-12
Contents 7
Appendices
A1 Experiments with rake and trail
Rake .......................................................................... A1-1
Trail ........................................................................... A1-7
Conclusions ............................................................... A1-8
Post script.................................................................. A1-8
A2 Glossary of terms
A3 Units conversion
A4 Gyroscopic effects
A5 Basic physics of motorcycles
Basic Trigonometry.................................................... A5-1
Units of angle............................................................. A5-2
Velocity ...................................................................... A5-3
Acceleration............................................................... A5-4
Mass.......................................................................... A5-4
Momentum................................................................. A5-5
Newton’s laws............................................................ A5-6
Force and weight ....................................................... A5-7
Moments, couples and torque.................................... A5-8
Centripetal & centrifugal force.................................... A5-9
Addition and resolution of velocities and forces........ A5-10
Work, energy and power.......................................... A5-12
Nomenclature and sign conventions ........................ A5-13
Normalization........................................................... A5-14
A6 Analysis of mechanisms
A7 CoG and mass distribution of rider
A8 Typical data

[TROOPER]

Αρχικά δημιουργήθηκε από sniper
Μόλις το τελειώσεις δώστο στον Αμάνικο....

ναι ο νικολακης μας το χει διαβασει δεν το χρειαζεται.

[sniper]

Αρχικά δημιουργήθηκε από TROOPER
ναι ο νικολακης μας το χει διαβασει δεν το χρειαζεται.

[DUKASII]

yparxoyn anthropoi poy DEN xerane oti an patiseis poly to mprostino freno mplokarei o troxos xanei ti prosfisi toy to lastixo me to dromo..kai pefteis.

molis to mathane..(diladi pesane epeidi patagan ti maneta toy frenoy opos paizoyne to poyulaki toys..) ginane kalyteroi odigoi...


opote oti matheneis perisotero gia ti leitoyrgia tis moto soy..kai to pos symperiferonte ola ayta ta sidera..

ginese kalyteros odigos..

[OldMan]

Αρχικά δημιουργήθηκε από DUKASII
opote oti matheneis perisotero gia ti leitoyrgia tis moto soy..kai to pos symperiferonte ola ayta ta sidera..
ginese kalyteros odigos..

Μπήκε κανείς με το account του Μπιμπίκου ..???

[OldMan]

Αρχικά δημιουργήθηκε από sniper
Στείλε ένα ΠΜ στον oldman.

Είσαι σκατόψυχος ...