My last ride - Hyosung GD125 a.k.a Exiv

Hyosung GD125 atau lebih dikenali sebagai Hyosung Exiv hanya untuk pasaran domestik Korea Selatan ni, tidak seperti Hyosung Comet GT125/GT250 dan GT650 naked dan replika yang dipasarkan utk international market termasuk dipasarkan di Malaysia ,Comet GT250 lebih dikenali Naza Blade. GD125 atau Exiv , akibat ketidakcantikan luaran jentera ni, utk menampakkan hebat, kepuk jentera sering di customized mengikut rupa superbike yg sedia ada seperti Yamaha YZF-R1 dan Suzuki GSX-R 1000/600cc oleh korean . Kepuk R1 jadi Yamuda K-1 dan GSX-R jadik Yamuda K-2. Bagaimana gua leh tau.. sebab gua pernah guna..




spec jentera ini.

Engine:
Air cooled, 4 stroke, single cylinder,
Capacity:
125 cc


Ignition/Starting:
CDI-unit/electric

Max Power:
13hp @ 10,500 rpm

Transmission/Drive:
5 Speed/chain

Front Brakes:
Single disc

Rear Brakes:
Drum

Front Tyre:
90/90-17

Rear Tyre:
120/90-17

Dry-Weight:
119 kg

Fuel Capacity:
13 Litre


Seperti yg dpt dilihat jentera ni hanya mampu generate 13hp saje drpd ruang 125ccm yg ada, a very standard commercial 4-stroke 125cc bike. Anyway, it was mine.. skrang tak lagi.. rase rindu ada gak kat jentera ni.. takpe la.. duniawi je sume ni.. setiap mula pasti ada akhir, bertemu ada berpisah.. kehkeh.. dlm slow talk gua ngan jentera ni.. gua show off last ride gua ngan jentera ni dlm metropolitan Seoul ni.

2T vs 4T

Do you know why the MotoGP changed 500cc 2-stroke to 1000cc 4-stroke in world class event superbikes race in 1999? Have you ever wondered why there is no 2-stroke commercial car ? I mean there is .. but rare.. as I show you at the end of this post. When we talk about power, at the same displacement there is no way 4-stroke could win 2-stroke . Other word, you`re gonna get smoked. y? let`s see theortically.

2-Stroke engine:

Advantages:

• - Two-stroke engines do not have valves, simplifying their construction.
• - Two-stroke engines fire once every revolution. This gives two-stroke engines a significant power boost.
• - Two-stroke engines are lighter, and cost less to manufacture.
• - Two-stroke engines have the potential for about twice the power in the same size because there are twice as many power strokes per revolution.

Disadvantages:

• - Two-stroke engines don't live as long as four-stroke engines. The lack of a dedicated lubrication system means that the parts of a two-stroke engine wear-out faster. Two-stroke engines require a mix of oil in with the gas to lubricate the crankshaft, connecting rod and cylinder walls.
• - Two-stroke engines do not use fuel efficiently,
  
• - Two-stroke engines produce more pollution.
• -- The combustion of the oil in the gas. The oil makes all two-stroke engines smoky to some extent, and a badly worn two-stroke engine can emit more oily smoke.
• -- Each time a new mix of air/fuel is loaded into the combustion chamber, part of it leaks out through the exhaust port.

let`s see the advantages 2-stroke over 4-stroke

• When the engine is revving at 10000rpm the 2-stroke engine ignites gasses 10000 times per minute while 4-stroke engines ignite only half. So it should have twice as much power, right?
• The 2-stroke engine does have channels for air transport but the piston opens and closes the channels, in a 4-stroke engine there are separate valves and a camshaft that do this. This means extra moving parts and a far more difficult cylinder head design. Because of this maintenance is more difficult.
• 2-stroke engines give more power. At 50cc races 2-stroke bikes can reach speeds of over 130km/h while 4-stroke bikes can hardly reach those speeds with 70cc!! The same applies to everyday use. When you remove some restrictors from a scooter it will go 80km/h. You won't reach these speeds with you're 4-stroke bike by just removing some restrictors.

So, what about advantages 4-stroke over 2-stroke?

• what does a stock 2-stroke bike use? About 1 liter fuel per 35km. What does a stock 4-stroke bike use? About 1 liter fuel per 50km!

• 2-stroke bikes burn oil. All it does is clogg up the exhaust and smell bad! They have to lubricate the cylinder and cylinder channels big time or the engine will be wrecked...
• 2-stroke bikes waste much more energy on heat than a 4-stroke bike does so the 4-stroke engine is much more energy efficient.
• Did you read the part on how the 2-stroke engine works?? Did you notice fresh fumes are used to push out the exhaust fumes?? Of course these two gasses will mix in that process, so or fresh fumes are pushed out too or exhaust fumes stay in, either way, it's bad and it sucks.
• Ever tried to speed up a 2-stroke bike?? So fast that it could do speeds of over 100km/h. If you have you know you have to add lots of extra oil to the fuel and even than it's a big problem to keep the engine running for let's say a couple of months without mayor engine damage, wasted cilinders and screwed up pistons. Take a 4-stroke engine on the other hand and it will keep running fine for months and months and months... without extra oil ;) The reason is that because of those channels in the cilinder it's much harder to keep it lubricated enough all the time. The 4-stroke engine doesn't have this problem because it has no channel in the cilinder.
• Because of technical aspects the 2-stroke engine can only have it's intake channel open only half as long as the 4-stroke engine...
• Listen to the sound of both engines...Doesn't need further explanation I suppose.

It`s all about power, emission, environment and efficiency. People don`t make 2-stroke car because of emission, environment and efficiency as well as MotoGP, but still 2-stroke is the best for power per displacement.
by the way, as i told you earlier, enjoy the singing 1950 2-stroke car ..

PES 2008

Pro Evolution Soccer 2008 atau pendeknya PES 08 sememangnya disukai ramai bagi yg sukakan bola sepak dalam genre sport video games tak kira platform, pc, ps3 , psp , nintendo mahupon xbox 360. Seperti edisi edisi yang lalu PES menjadi saingan kepada FIFA EA sport dalam video game sukan yang sama. Seperti yang kita sedia maklum bagi peminat PES .. terdapat 5 level dlm difficulty game ini. beginner, amateur, regular, pro dan top player. Bagi yg otai level top player itu sememangnya tahap playable, adakalanya menang dan sebaliknya bergantung kepada tahap team yang bermain dan juga skill invidividu tersebut. Adakalanya juga tahap top player begitu sengal sekali sehingga possession bola diconquer tak beragak walaupon secara relatif team yg bermain lebih kuat dari team kom. Kesengalan ini ternyata memberikan tekanan, hilang objektif game utk menghilangkan release tension belajar.. bajet je..
Tatkala itu juga timbul idea akibat kebosanan untuk bermain dengan level beginner. Level ini pon terlalu sengal kerana org yg tak main PES pon buleh blasah level ini. Goalkeeper pun boleh hatrik .Tapi , tak mengapalah secara bercoret diblog ni. Kesengalan itu telah pon dibuktikan dengan vid dibawah ini.. huhu..

Feel the Performance

Rentetan topik post sebelum ni, overclock your machine.. apakah benar dengan overclock komputer korang dapat meningkatkan performance?? well, semua bergantung kepada aplikasi yang digunakan, secara asasnya peningkatan performance terasa pada penggunaan 3D application contohnya, games, 3D workstation, dan program yg berat2 yg lain, jgnlah pulak harapkan respond time utk IE atau firefox jadik lagi singkat disebabkan overclock.. kehkeh.. . Secara tipikalnya, overclocker overclock diorg punya PC sebab 2 perkara.. pertamanya nak tingkatkan fps atau frame per second bagi game graphic superb dan latest yg diorg main yg mana memakan resource kom yg besar. Tapi sebenarnya bergantung pada gandingan vga cpu & ram . Apa-apa hal pon, kita constant kan vga& ram dan jadikkan cpu frekuensi sebagai variable.
Keduanya, dengan overclock ntah dari mana kepuasan hati datang menusuk kalbu apabila hasil overclock berjaya dengan risiko kom crash dan komponen rosak. Perumpamaan yg mudah leh dibuat , kenapa org bawak laju kat jalan raya risiko nyawa sendiri walaupon diorg ada masa yang banyak dah tak perlu nak tergesa2, dah tentu kepuasan... kehkeh. Begitu jugek lah dlm PC hardware ni.
Rasenya tak lengkap kalo takde bukti yang mengatakan overclock ni meningkatkan performance. Overclock yg gua buat ni hanya oc cpu sahaja, tak oc vga walaupon graphic korang
buleh diOCkan. Gambar diatas adalah benchmark program bernama Aquamark yg digunakan utk carik beza default setting dan OC setting. Gambar diatas tu adalah default setting tanpa sebarang OC, so jika dilihat score 88ribu tu bererti 88fps. Dibawah pulak diOC berjaya menjadik 99 fps utk resolution yg sama. Dipendekkan crite, semakin tinggi nilai fps , semakin smooth game tu utk dimainkan.. huhu.. So terbukti OC tingkat kan performance utk lebih kurang 13% utk 18% OC.

For details, OCed jentera low bajet gua ni :
AMD Athlon 64 X2 4200@2.64Ghz
XFX GeForce 7900GT
ASUS M2N-E nvidia 570
G.Skill PC2-6400 CL4