Rich28

Hi

What are super chargers like?? I was told that a YS60 with a super charger producers heaps of power.

What do you think?

bako

supercharger is air compressor, connected to axle for rotating. it pushes more air in cilinder.

peter_m

Baicaly it forces more more fuel and air in to cylinder faster thus super charged

powertoys

My Feedback: (2)

If your talking the YS60, it is not supercharged. It is just a great two stroke, especially with a tuned pipe. If you are talking YS63 then your talking supercharged with a regulated pressurized fuel system (sometimes called pumped). The pressurized fuel system is awesome, you can put the tank in the tail of the plane and not worry about fuel delivery as you would with an exhaust pressure system. The YS produces about 8psi on the fuel. It also uses a rotary valve in the crankcase to cycle between intake of carb and forcing the air/fuel into the header up to the intake valve. Unlike a car supercharger (roots system) that has twin rotating impellers to constantly force fuel and air into the manifold, the YS uses the up and down stroke of the piston with the rotary valve to do the same function. Stroke one (up/ignition) valve lines up with carb piston goes up sucks in air/fuel then valve rotates to header. Stroke two (down/power stroke) piston forces air/fuel into header. Stroke three (up/exhaust) valve again lines up with carb closing off header and piston draws in more air/fuel mixture. Stroke four (down/ set up for next stroke one) valve rotates to header, piston comes down forcing second air/fuel mix into header with the first air/fuel mix while the intake valve opens up to let in both air/fuel charges. Thus instead of only one air/fuel mix like other engines you get two, or in other words supercharged. Hence why my YS63 will spin the same prop at almost the same RPM (150 RPM less) as my Saito 91. Plus pattern guys like the YS because they can put the fuel tank back at the CG point and the attitude of the plane doesn't change during flight. Hope this helps.

Mike