Slide Style Carburetor
#8 is Slide
#26-35 is Needle
#4 is Slide Spring
#13 is Float
#10-37 is Pilot Jet
#9-36 Is Main Jet
#19 is Mixture Screw
#18 is Idle Adjuster
The items in red will be adjusted and /or replaced for Optimum Performance with our kit, that is customized to your specifications.
Slide Carb
Variable-venturi, in which the fuel jet opening is varied by the slide (which simultaneously alters air flow) and is directly linked to the throttle cable on a Slide StyleBoth carburetor types work on Bernoulli's principle: the faster air moves throught the Venturi, the lower its static pressure, and the higher its dynamic pressure. The throttle (accelerator) linkage does not directly control the flow of liquid fuel. Instead, it actuates carburetor mechanisms which meter the flow of air being pulled into the engine. The speed of this flow, and therefore its pressure, determines the amount of fuel drawn into the airstream.
The main disadvantage of basing a carburetor's operation on Bernoulli's principle is that, being a fluid dynamic device, the pressure reduction in a venturi tends to be proportional to the square of the intake air speed. The fuel jets are much smaller and limited mainly by viscosity, so that the fuel flow tends to be proportional to the pressure difference. So jets sized for full power tend to starve the engine at lower speed and part throttle. Most commonly this has been corrected by using multiple jets. For cold starting, a different principle was used, in multi-jet carburetors. A flow resisting valve called a choke, similar to the throttle valve, was placed upstream of the main jet to reduce the intake pressure and suck additional fuel out of the jets.
The main disadvantage of basing a carburetor's operation on Bernoulli's principle is that, being a fluid dynamic device, the pressure reduction in a venturi tends to be proportional to the square of the intake air speed. The fuel jets are much smaller and limited mainly by viscosity, so that the fuel flow tends to be proportional to the pressure difference. So jets sized for full power tend to starve the engine at lower speed and part throttle. Most commonly this has been corrected by using multiple jets. For cold starting, a different principle was used, in multi-jet carburetors. A flow resisting valve called a choke, similar to the throttle valve, was placed upstream of the main jet to reduce the intake pressure and suck additional fuel out of the jets.
|
If you want to purchase mains and pilots, use Add to Cart
|
If you want to purchase mains and pilots, use Add to Cart
|