ENGINEERING TECHNICAL DATA SHEET

Manual Idle Air Control System

LE POTATO 2.0® – Registered Trademark

1. Product presentation

The Manual Low Idle Air Control System is a precision mechanical device designed to regulate idle air flow on electronically fuel-injected V-Twin.

The system allows direct mechanical control of the idle air circuit, independent of the ECU's regulation strategies. It acts as a variable air metering valve, allowing fine adjustment of the airflow admitted at idle.

The system's adjustment modifies the air passage section through the axial movement of a precision-machined regulating tip, enabling a stable, controlled and reproducible idle, while delivering the characteristic sound signature sought after on V-Twin engines.

2. System Architecture

The mechanical assembly is composed of the following main elements:

1. Main body made of CNC-machined anodized aluminum
2. Manual idle speed adjustment screw
3. Precision notching indexing mechanism
4. Stainless steel air dosing tip
5. High-temperature O-ring sealing system
6. CNC machined adjustment housing

• Air flow adjustment is achieved by rotating the adjustment screw, which generates a controlled axial displacement of the metering tip in the idle air duct.

The indexing mechanism ensures:

• feedback during adjustment
• stability of the setting under engine vibrations
• repeatability of adjustment positions

3. Materials and construction

The surface treatment by technical anodizing ensures:

• protection high corrosion
• resistance to wear
• stability lasting dimensional

4. Air dosing mechanism

The idle air flow regulation is achieved by a precision conical metering tip made of AISI 304 stainless steel.

The conical geometry allows for a progressive and controlled variation of the airflow depending on the axial position of the tip.

Functional characteristics :

• progressive modulation of airflow
• engine idle stability
• precise and reproducible answer

This design ensures a smooth variation of airflow over the entire adjustment range.

5. Adjustment mechanism

The system uses a threaded manual adjustment screw, combined with a notched indexing mechanism.

Features :

1. precise incremental adjustment
2. indexed adjustment positions
3. engine vibration resistance

The system ensures that the selected position remains stable despite engine vibrations and thermal cycles.

6. Sealing system

The device's sealing is ensured by a high-temperature O-ring placed in a precisely machined groove.

Functions:

• prevent unwanted air leaks
• to ensure the stability of the set airflow
• ensuring durability in a hot engine environment

The gasket material is designed to withstand the thermal cycles typical of air-cooled V-Twin engines.

7. Manufacturing Processes

The components are manufactured using precision machining processes to ensure the reliability and repeatability of the system.

Processes used:

1. multi-axis CNC machining
2. precision turning of stainless steel components
3. surface treatment by anodizing
4. dimensional control and assembly

These processes guarantee:

1. tolerances strict mechanical
2. reliability in a vibrating environment
3. durability high

8. Intended applications

The system is intended for the following applications:

• engines V-Twin
• high-performance engine modifications
• optimization of engine behavior at idle
• motorcycle customization projects

The device is particularly suited to users seeking mechanical control of idle speed and engine character.

9. Technical advantages

1. direct mechanical control of idle air flow
2. precise and reproducible adjustment
3. anti-vibration indexing system
4. Robust construction made of CNC-machined aluminum
5. stainless steel regulating tip
6. high temperature sealing

10. Intellectual Property

LE POTATO 2.0® is a registered trademark associated with the manual idle air control system.

The product design, brand elements and associated technical concepts are protected by applicable intellectual property rights.

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