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RB Products Nylon Carb Restrictor 8.5mm
RBC01250-9TR8.5
The RB Products Nylon Carb Restrictor 8.5mm RBC01250-9TR8.5
is a tuning accessory for .21 nitro RC car engines, specifically for Novarossi, RB Concept, and Max carburetors. It is an insert that fits into the carburetor to fine-tune the engine's power delivery and improve fuel efficiency.Product features
Purpose: The restrictor, also known as a venturi, adjusts the amount of air entering the engine. By changing the air-to-fuel ratio, RC car enthusiasts can tune the engine's performance for different track conditions.
Benefits of a smaller restrictor < 6.0mm
Improved throttle response: A smaller opening increases the speed of the incoming air, which improves the "venturi effect" for a more stable vacuum and better fuel atomization. This results in smoother power delivery, especially at the lower end of the throttle.
Increased runtime: By limiting the engine's overall power, a smaller restrictor can help to increase the runtime of the vehicle per tank of fuel.
Best for smaller tracks: The improved low-end throttle response is beneficial on tracks with tighter turns and shorter straightaways. Impact on top-end power: The trade-off for a smaller restrictor is a slight reduction in maximum top-end speed, as it restricts the total volume of air that can enter the engine.
Benefits of a larger restrictor > 6.0mm
Moves the power and torque curve higher in the RPM range, resulting in quicker top speeds Best for larger tracks: The improved top-end speed, as it promotes the total volume of air that can enter the engine.
Compatibility
The RB Products restrictor is compatible with various carburetors from manufacturers like RB Products, OS, Max and Novarossi, which are often found in nitro RC vehicles.
How to choose a restrictor
Your choice of restrictor size should be based on your specific racing needs.
Smaller tracks: A smaller restrictor like the 5.4mm is ideal for improving low-end torque and fuel efficiency.
Larger tracks: A larger restrictor ike the 8.5mm provides more top-end power and speed, which is beneficial for tracks with long straightaways.
Purpose: The restrictor, also known as a venturi, adjusts the amount of air entering the engine. By changing the air-to-fuel ratio, RC car enthusiasts can tune the engine's performance for different track conditions.
Benefits of a smaller restrictor < 6.0mm
Improved throttle response: A smaller opening increases the speed of the incoming air, which improves the "venturi effect" for a more stable vacuum and better fuel atomization. This results in smoother power delivery, especially at the lower end of the throttle.
Increased runtime: By limiting the engine's overall power, a smaller restrictor can help to increase the runtime of the vehicle per tank of fuel.
Best for smaller tracks: The improved low-end throttle response is beneficial on tracks with tighter turns and shorter straightaways. Impact on top-end power: The trade-off for a smaller restrictor is a slight reduction in maximum top-end speed, as it restricts the total volume of air that can enter the engine.
Benefits of a larger restrictor > 6.0mm
Moves the power and torque curve higher in the RPM range, resulting in quicker top speeds Best for larger tracks: The improved top-end speed, as it promotes the total volume of air that can enter the engine.
Compatibility
The RB Products restrictor is compatible with various carburetors from manufacturers like RB Products, OS, Max and Novarossi, which are often found in nitro RC vehicles.
How to choose a restrictor
Your choice of restrictor size should be based on your specific racing needs.
Smaller tracks: A smaller restrictor like the 5.4mm is ideal for improving low-end torque and fuel efficiency.
Larger tracks: A larger restrictor ike the 8.5mm provides more top-end power and speed, which is beneficial for tracks with long straightaways.
