How a 2/ engine works.

[pitbikeingmad]

2 Stroke Engine Operation

• At an exact point just before the piston reaches the top of the cylinder the spark plug fires. The spark ignites the mixture which rapidly expands propelling the piston downwards. Once the top edge of the piston uncovers the exhaust port the exhaust gasses start to vent out through the exhaust. Meanwhile the fuel/air mixture in the crankcases below the piston is being compressed as the piston descends and the reed valve closes. Once the top of the piston uncovers the transfer ports the compressed fuel/air in the crankcase passes up through the ports to start charging the cylinder with fresh mixture which also serves to expel the remaining exhaust gasses. The fuel/air mixture from the crankcase continues to pass through the transfer ports until the piston reaches the bottom.
• As the piston rises it covers the transfer ports and starts to create a vacuum beneath it. Fuel/air mixture is drawn in from the carburetor, through the reed valve, and into the crankcase. In the cylinder the rising piston expels the remaining exhaust gasses out of the exhaust port. Once the top of the piston has closed the exhaust port the mixture trapped in the cylinder is compressed up into the head and the cycle repeats.

[_-Ch0sen 0ne-_]

Get a 4 stroke 1 up.

Edit: SORRY!!! You just made one lol, Nevermind should be useful to somebody.

[pitbikeingmad]

Originally Posted by _-Ch0sen 0ne-_

Get a 4 stroke 1 up.

Edit: SORRY!!! You just made one lol, Nevermind should be useful to somebody.

Yep mate got both of em up 2/ n 4/ Hope it helps people!

[Adam #7]

You Tube

You Tube

[pitbikeingmad]

Originally Posted by dr pepper

http://www.youtube.com/watch?v=sEf8va1S7Sw
http://www.youtube.com/watch?v=dCEja...3CFE70&index=2

Ya usles pep's.

Put the 'tube vids for a 4/ in the 2/ thread. confuse people or what?

[_-Ch0sen 0ne-_]

Originally Posted by dr pepper

http://www.youtube.com/watch?v=sEf8va1S7Sw
http://www.youtube.com/watch?v=dCEja...3CFE70&index=2

What sado mounted a cam in his cylinder for utube

[katoom]

Some very old 2t racers.

http://www.suzukicycles.org/photos/r...7_RK67_800.jpg

Suzuki RK67 1967
Engine type: Water-cooled 50 cc parallel twin 2-stroke. Maximum 17.500 rpm, 105 Mph.
Transmission: 14 speeds

http://www.ozebook.com/compendium/suzi/rs67125.jpg

Suzuki RS67 1967
February 1967 - August 1967
Engine type: Water-cooled 125 cc square-four 2-stroke.
Bore x Stroke: 35.5 x 31.5 mm
Compression ratio: 8.4
Carburetor: VM24
42 hp / 16,500 rpm (350 bhp per liter), 145 mph.
Transmission: 12 speeds


Must of been extremely peaky to require 14 and 12 speed g/box

[pitbikeingmad]

Thanks for adding to the information lads! Will hopfuly help people in the future.