Senin, 14 Maret 2011

Durasi Knalpot 2tak


EXHAUS DURASI

RPM DURASI

10.000 – 11.000 194 ° - 196

11.000 – 12.000 196 ° - 198 °

12.000 – 13.000 198 ° - 200 °

13.000 – 14.000 200 ° - 202 °

14.000 -15.000 202 ° - 204 °



RUMUS DURASI EXHAUS

T² + R² - L² / 2 X R X T =


PANJANG STANG PISTON

DURASI EXHAUS = ( 180° – CO) X 2



T = R + L – E

R = STROKE DIBAGI 2

L = PANJANG STANG PISTON

E = TINGGI LOBANG EXHAUS DARI T.M.A




EXE : 1 YAMAHA F.1.ZR

STROKE : 52mm TINGGI EXHAUS : 26mm PANJANG CONROD : 96mm

R = 52 : 2 = 26mm E = 26mm L = 96mm T = 26 + 96 – 26 = 96mm

6² + 26² - 96² / 2 X 26 X 96 = ...

D = ( 180° – COS ) X 2

D = ( 180° – COS O,135416666 ) X 2

D = ( 180° – 82,217 ) X 2

D = 97,782 X 2 = 195,565 → DURASI EXHAUS = 196° → 11.000 RPM




EXE : 2

STROKE : 52mm TINGGI EXHAUS : 25mm PANJANG CONROD : 96mm

R = 52 :2 = 26mm E = 25mm L = 96mm T = 26 + 96 – 25 = 97mm


97² + 26² - 96² / 2 X 26 X 97 = ...


D = ( 180° – COS ) X 2

D = ( 180° – COS O,172283901 ) X 2

D = ( 180° – 80,079 ) X 2

D = 99,921 X 2 = 199,842 → DURASI EXHAUS = 200° → 13.000 RPM




* EXHAUST PIPE *

L = ED X 42545 / RPM

L = PANJANG IDEAL KNALPOT . ( dari PISTON sampai pertengahan CONE BAFLE ).

ED = Exhaust Durasi

RPM = Putaran mesin pada Exhaust Durasi



EXE : 1 EXHAUST : 26mm DURASI : 196° RPM : 11.000

L = 196 X 42545 / 11.000 = 758mm



EXE : 2 EXHAUST : 25 mm DURASI : 200° RPM : 13000

L= 200 X 42545 / 13.000 = 654.5 mm



* HEADER

Ø Port dalam exhaust : 100cc → 140cc 34mm → 40mm

140cc → 175cc 40mm → 46mm


Panjang haeder : 7.8 → 8.8 x Ø Port exhaust
Sudut header : 1° → 2° max(road race) . 2° → 3° max(motocross)


* FLANK . Jarak antara piston dan header: 60mm – 80mm


* DIFFUSER Sudut Diffuser : Stage 1 = 6.5 ° → 7.5 °

Stage 2 = 4.5 ° ; 7.5 °

Stage 3 = 4.5° ; 7.5° ; 9° → 10°


*BELLY
Ø Belly 2 → 3 X Ø Port exhaust Panjang belly = L – (Header + Diffuser + ½ Bafle)



*BAFLE < Bafle 9° - 12°



*STINGER
CCmotor -- PANJANG PIPA -- Ø DALAM PIPA

125cc–145cc -- 150mm–265mm -- 19mm–23mm

145cc–175cc -- 150mm–320mm -- 22mm–27mm

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