Horse Power @ RPM

cmner lak dgn prob blok yg da bikin tp rpm xnaik2 pun smpai 10-11 stp...
pelik la ku...
ingt b4 ku bawa motor blk kat borneo nk setting moto bg kaw2...
ade cdgn xmane pomen yg blh thn wat motor....

uiks x naik ker....
block aper yang dah di mody

tadi aku hentam moto sampai 10k rpm, lawan ngan kete, ingat kete biasa rupenyer fairlady 350z patut la 1000 tiang kene tinggal hahahah...malu eden...

mousepink wrote:

aku terjumpa kt katalog 125z...adakah ini graf hp 125z?sesapa leh explain..

betul latu graf dyno 125z standard gaban...

huhuhu hajat besar

salam kepada otai..ni bukan paper...juz ingin tahu...betol ker...setiap 1 rpm x 20 kmh...contoh...rpm8= 160kmh...???

maner ader
x leh kira cam tue

ooo...ok..juz tanyer jer...

yep,x semestinye..kene tgk pade ratio spoket gak..

kat ner nak try hp
and baper cos dier yer

S-T-P wrote:

kat ner nak try hp
and baper cos dier yer

UTMRacing setapak KL..

RM50 kot sekali test..aku pun x sure sbb aku free..hehe

huhuhu
eh ejas tuk harga kwn2
ahaha
nie tuk check jer kan

aku nk buat gak la mende nie,wan ko bwk moto aku blh,msti free,kui3x..

superjoemanito wrote:

aku nk buat gak la mende nie,wan ko bwk moto aku blh,msti free,kui3x..

haha bleh je joe,no hal..hehe

muto aku pun tehehehehe

uiks ramai pulak
hahaha

Aku x paham la

2 stroke 125cc = 17.86hp
4 stroke 150cc (cbr150)=17/18hp

padahal 2 storke nie dua kali je turun naik, sepatutnye dia nie 2x hp dr 4stroke
patut 2 stroke dh 30hp dah camnie........xlogik btol?

sape bole terangkan? wan? amacam?

-edit-

aku check web, aprilia 125cc 2 stroke = 30hp

nie br the true power of 2 stroke

sedey tupai aku x kwat........yamaha jahat nie dengki kt tupai lol...nk bagi laici naik.

cbr dia x guna plain 4 stroke technology,dia ada dohc,kendian dia punya karb besar mana

tupai ni plak guna plain 2 stroke technology,xde power valve mcm aperla tu,lg tupai punya karb stended 22mm,aperla tu plg kecik 28mm

lg cbr guna coolent,tupai xde,aperla ada..coolent ni main peranan gak dlm hp sesuatu muto

lg satu material enjin,u got what u spend..eh btol ke

lawan cbr tu sepatutnya tzm,nsr,kips

archonixm wrote:

Aku x paham la

2 stroke 125cc = 17.86hp
4 stroke 150cc (cbr150)=17/18hp

padahal 2 storke nie dua kali je turun naik, sepatutnye dia nie 2x hp dr 4stroke
patut 2 stroke dh 30hp dah camnie........xlogik btol?

sape bole terangkan? wan? amacam?

-edit-

aku check web, aprilia 125cc 2 stroke = 30hp

nie br the true power of 2 stroke

sedey tupai aku x kwat........yamaha jahat nie dengki kt tupai lol...nk bagi laici naik.

mm..pada pendapat aku,HP ni datang bukan je dari CC moto tu..kite tak boleh compare dgn cara tu..sebagai contoh:

125z = 125cc = 17.86hp

moto A:
-piston 53mm (stended)
-blok stended
-carb stended
-ekzos stended
HP = 17.86

moto B:
-piston 53mm (stended)
-blok porting maksimum
-carb RXZ
-ekzos open pipe
HP = 23 (contoh)

moto C:
-piston 58mm (stended)
-blok stended
-carb stended
-ekzos stended
HP = 18.5 (contoh)

dari contoh2 moto kat atas,kite boleh tgk yang moto C yang berCC besar tak menghasilkan HP yang besar pon jika dibandingkan dgn moto B..

n bagi RS125 sistem tambahan ada pada rekabentuk enjin n formula dia..ada perbezaan pada RPM tinggi yang memberikan tujahan yang lebih pada enjin dan membentuk HP yang lagi tinggi dari 125z yang hanya gunakan sistem basic 2 stroke enjin..

untuk pembandingan yang dibuat antara 125z dgn CBR150 tu tak sepadan aku rasa..sebab:

125z = basic 2 stroke enjin
CBR150 = advance 4 stroke enjin

*jadi,cuba kita compare basic sistem enjin antara 125z dgn wave125..

125z = 17.86hp
wave125 = 9.3hp

dua kali ganda tak?..

*cuba bandingkan yang ni pulak..sama2 advance enjin sistem..

RS125 = 30hp
cbr150 = 17/18hp


tu la jawapan aku..mungkin pendapat otai lain berbeza mana tau.. malu je..

The piston sweeps up and down inside the cylinder from Top Dead centre (TDC)
to Bottom Dead Centre (BDC). The distance it travels vertically doing this
is known as the "Stroke" of the engine and this is determined by the length
of the crankshaft throw. The volume swept out is known as the "Swept Volume"
and this is the capacity of each cylinder. Above the piston at TDC is the
volume contained in the cylinder head gasket and combustion chamber - this
volume is called the "Clearance Volume". Each time the piston goes through
a cycle it compresses all the fuel air mixture sucked into the engine into
the clearance volume before ignition takes place.
The volume of a cylinder is calculated by multiplying the area of the bore
of the cylinder by the length. In the case of an engine the length is the
stroke length. The bore area is calculated as follows:
Bore Area = Bore x Bore x pi / 4. (pi has a value of 3.14159)
Normally we measure engine volume in cubic centimetres although engine dimensions
are often shown in millimetres. We need to convert any measurements into
centimetres before starting the calculations. Lets take the example of a
VW Gti 1800 cc engine. The bore is 81mm and the stroke is 86.4mm. Converting
into centimetres we get Bore = 8.1cm, stroke = 8.64cm. Copyright David Baker
and Puma Race Engines
Bore area is therefore 8.1 x 8.1 x 3.14159 / 4 = 51.53 square cm.
Volume of 1 cylinder is bore area times stroke = 51.53 x 8.64 = 445.22 cc
As there are 4 cylinders in the engine the total engine volume is 445.22
x 4 = 1780.88 cc.
Compression Ratio
The compression ratio is defined as (Swept Volume + Clearance Volume) / Clearance
Volume
We already know the swept volume of each cylinder from above - let's assume
the clearance volume of each cylinder is 55.6cc - what is the compression
ratio?
Compression ratio = (445.22 + 55.6) / 55.6 = 9.0
If we divide the swept volume alone by the clearance volume we get a number
which is 1 less than the compression ratio:
445.22 / 55.65 = 8.0

Aku rasa mcm kene amik kira skali compression ratio, sebab hanya cc yg hanya kiraan bore+stroke x menunjukkan ape2...tp ada satu ayat biasa kite dgr utk permotoran nie x kira kerete/motor.
There is no replacement for displacement......
Mungkin Aprilia 125RS nie compression dia gila tinggi tu yg meletup pegi tu...

Compression Ratio Aprilia 12.5:1 @ HP 30
Compression Ratio 125z 6.5:1 @HP 17

Conclusion = Comp ratio memainkan peranan penting utk mendapat HP sesuatu enjin.....

Hampir 2x ganda, tu pasal HP dia pn hampir 2x dari 125z...bole sape2 bagitau brape mm nak skim head nie nk kasi ratio 12.5 mcm Aprilia

Piston ape nk pakai nie yg leh tahan 12.5 lol, aku rasa conrod,crankshaft smua kene tukau nie kalau x bengkok boleh.......enjin pn kene bagi sejuk nie....adus susahnyer...byk problem kene settle.......

haha klau nak laju cam aprilia,jangan pakai 125z..

even sesuatu motor tu sama CC n stroke,x semestinye HP pun sama..

xsemestinye CC besar hp besar..

*susahle aku nak taip panjang2 bagi paham ni,pe kate esok ko join TT aku crite A-Z...

*125z ni dibuat utk attack pasaran moped malaysia..
*aprilia rs125 plak untuk street racing pade pasaran eropah..

kan lain marketing target tu.. engineer build / design a stuff according to certain target..

nak laju cam aprilia stnded,modi 125z ko to totally cubprix spec tapi xbleh bawak daily..

macam yg sona ckp tula,nak compare kene sama kelas,baru nampak advance nye..

contoh :

Ninja250r Vs aprilia Rs250

due2 inline two,sistem cooling sama,due2 pakai carb

hp:33hp VS 64hp..

kan almost 2x HP..

nak compression tggi bukan takat skim head je,jek rod pun bleh,dari segi kawah/squishband kene oter..n belum tentu boleh capai ratio cam aprilia..

huhu 2 stroke x bleh compression tinggi sgt lor,nnt dia sesak napas hehehehe

4 stroke bleh kompress tinggi2 sbb dia punya volume tu mmg xleh lepas 100%..kl mcm 2 stroke dia punya volume utk compress tu bleh over 100%,sbb satu source dtg dr port minyak satu lagi source dtg dr backpressure oleh port ekzos hasil dr excess minyak yg terlepas kuar dr silinder sama2 ngan gas ekzos

kl compression tinggi gila2 alamatnya pecah la head huhuhu

wan..aku pun nak dengar gak..he2..nanti ko citer kt ak mase grand tt..he2..
smpan baik dulu..nanti terlupe lak kan..

aku nk tnye sikit....kompius ni....

exzos pon min peranankan utk RPM ni....

sebab moto aku kalau pakai paip standerd rpm nek tinggi lg dari paip opret...

cth paip :-
ori 100 kmh = rpm7
opret 100 kmh = rpm 5
ke moto aku yg prob???

amex wrote:

aku nk tnye sikit....kompius ni....

exzos pon min peranankan utk RPM ni....

sebab moto aku kalau pakai paip standerd rpm nek tinggi lg dari paip opret...

cth paip :-
ori 100 kmh = rpm7
opret 100 kmh = rpm 5
ke moto aku yg prob???

haha pelik btol..jauh giler lari rpm ko..

*mmg btol ekzos main peranan tapi cume beze kalo pakai ekzos x standard,bleh tarik rpm lagi tggi..powerband lagi luas..sebab manifold besar / perut ade oter lain dar standard..