The petal valve is made on a vehicle to improve the thrust of the motor and fuel economy. Often the valve makes for scooters, motorcycles, mopeds. How does the petal valve work? When the piston is lowered down, the pressure is formed in a crank chamber, a reverse thrust is formed. Because of this, gasoline is injected back into the carburetor. The petal valve serves to not be such an effect.
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Such a valve can be made independently, having such tools and materials: steel sheet (thickness 4 mm and 2 mm), fiberglass, grinder, drill, file and electrolovka. The petal valve appears outwardly reminds the house, or rather the roof of the house. First we make a pattern of a petal valve with the desired dimensions, then placing the details of the "house" on the steel sheet (2 mm). And cut them out.
2
We calculate the valve parts on the sandpaper. Cut on two rectangular items of the window (on the sides). And at the base (thickness of 4 mm), we also cut the square and weld all five details of the petal between themselves, then again fit the parts on the sandpaper and clean them to the shine.
3
Drill make holes (D \u003d 4 mm) for fastening the petals of fiberglass. And at the base we make four holes (D \u003d 6 mm) in order to attach the petal valve.
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Now we proceed to the manufacture of petals for the valve. On the fiberglass, we draw a drawing of petals, carefully cut out and connect the petals with the valve body using screws so that everything is neatly, the screws cut.
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Often you have to make an adapter for fastening the petal valve to the vehicle. To do this, remove the carburetor and remove the aluminum nozzle. Remove the measurements from the place where the valve will be mounted, and from the steel sheet (4 mm), cut out two squares with mounting holes and windows inside. Between the squares, we place the tube and weld the part. The finished adapter is calculated on the emery circle. And when connecting an adapter with a carburetor, do not forget to put the parenchic gaskets.
Thanks to the petal valve, your technique will acquire power, if you could not go on a small rise in your scooter, now you can even climb him even together. Let it have to suffer a little, but without this detail traction characteristics of transport are much worse. So it is worth hardening, because the cost of the material for the valve is very small.
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