Why is the engine of the Tianhong 90 motorcycle so quiet?
3 Answers
Tianjin Honda's Tianhong 90 uses an imported engine with superior manufacturing processes, resulting in minimal operational noise. Additionally, the exhaust pipe's excellent noise reduction contributes to the overall quietness. Advantages of the Tianhong 90: As of now, it is the best joint-venture motorcycle available. It features a quiet engine, low fuel consumption, excellent build quality, stable performance, and outstanding adaptability. Comparable to imported models, it is ideal for beginners to familiarize themselves with motorcycle operations, offering a very relaxed riding posture. Disadvantages of the Tianhong 90: The quality control is average, with subpar components like turn signals, license plate tail lights, and footrests. The lower gears are practically useless, requiring quick shifts from 1st to 4th gear within 7 seconds at traffic lights, with 5th gear being the optimal cruising range.
I've been riding the Tianhong 90 for almost ten years, and its engine's noise reduction is truly amazing. Honda's design is brilliant—the 90cc small-displacement engine is equipped with a precision balancing mechanism that makes the internal piston and connecting rod movements incredibly smooth, reducing vibrations by more than half. The exhaust system is also cleverly designed, with the muffler wrapped in thick materials that absorb most of the exhaust noise. As a daily commuter, it's so quiet that it glides through the streets without even startling a cat. It's fuel-efficient, affordable, and easy to maintain, with minimal wear thanks to the reduced vibrations. In comparison, some newer motorcycles are annoyingly loud—the Tianhong 90's quietness is legendary, making urban riding relaxed and enjoyable.
The quietness of the Tianhong 90's engine is primarily due to meticulous craftsmanship. Honda's early technology endowed it with a compact engine structure, minimal component tolerances, and excellent sealing to reduce friction noise. The optimized exhaust design effectively suppresses combustion noise. In personal experience, it's almost silent at low speeds or idle, making it particularly suitable for residential areas without worrying about disturbing the neighbors. Over long-term use, it proves to be reliable and durable, requiring only occasional oil top-ups to maintain its quiet operation. Speaking of motorcycle development, Honda's innovations in this area are highly regarded by many, and the Tianhong 90, as an older model, achieving such quietness demonstrates the enduring appeal of simple design.
