sport flywheel

RX-7MFD640

Car model: RX-7
Model: FD3S MT車
price:
Selling price$341.00

Product information

*It may not be possible to install it depending on the grade and year even if it is the same car model. Additionally, additional parts may be required for installation. Please be sure to check here for detailed compatibility.

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This product is designed specifically for the RX-7, reducing the weight of the mass-produced flywheel by an appropriate amount and reducing the moment of inertia by approximately 42%. This makes it possible to improve engine response with minimal impact on operability. The concern about reduced durability due to weight reduction has been addressed by using fully machined chrome molybdenum steel material with excellent thermal stability. >>More details

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Reduced moment of inertia, contributing to improved response.

The flywheel is a part that absorbs torque fluctuations that occur during the engine operating process and stabilizes rotation, and is attached to the rear end of the engine's crankshaft (or eccentric shaft in the case of RE). Weight (mass) is generally used as a performance indicator for lightweight flywheels for tuning, but does the mass distribution concentrate at the center of rotation? Is it on the periphery? The magnitude of the moment of inertia is the key to engine characteristics.
The moment of inertia is like a coefficient that determines the ease of rotation; the smaller the moment, the better the response, but disadvantages such as engine stalling, lack of torque at low rotations, and increased vibration. On the other hand, if it is too large, the rotation will be smooth but the response will deteriorate. Therefore, it is difficult to find a balance. For mass-produced cars, it is unavoidable that the moment of inertia is larger due to considerations for ease of handling and comfort, but if the focus is on drivers who want a sense of oneness with the car, there is room for improvement.
Our "Sports Flywheel" reduces the moment of inertia by 28 to 37% compared to mass production (for reciprocating engines). The specifications are designed to combine agile accelerator response and stress-free operability in sync with the sensibilities of drivers who enjoy driving on the street. The material used is chromium molybdenum steel with excellent thermal stability. If possible, we recommend installing it together with a clutch line that increases the direct feeling when operating the clutch.

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