![]() While the frame is cost-effective, it provides a significant advantage over a downtube chassis in terms of strength and rigidity. Bikes like the TVS Star City, Honda CB Shine and the Royal Enfield Classic 350 are some motorcycles that use single cradle frame.Ī double-cradle frame uses two tubes running beneath the engine in order to support it instead of one steel tube on a single cradle frame. For instance, it isn’t well balanced and becomes wobbly and unstable under heavy braking or cornering. While the assembly is light and cheap to manufacture, it isn’t the strongest of frame types. In some cases, motorcycles which employ a downtube frame use the engine as a stressed member. One runs over the engine while the other (bottom tube) passes from below. Here, the frame acts as a bed for the engine with two tubes connecting the steering head or yoke. The Hero Honda CD100 is one such example.Ī single cradle frame, also known as single downtube or diamond frame, is most commonly used on budget-friendly motorcycles. On the flip side, a backbone frame offers less torsional rigidity and strength, and hence, used on low-cost motorcycles running smaller engines. ![]() It’s the most affordable type of chassis as its construction is fairly simple. Here, the engine usually hangs off the chassis and isn’t cradled or considered as a stressed member. The engine is bolted onto the frame which connects to the steering head and pivot point for the rear suspension. In layman's terms, a backbone frame acts as the spine of the bike and holds crucial components together. Materials aside, we will be taking a brief look at the types of motorcycle chassis, their advantages and disadvantages. There are various types of motorcycle frames which are based on the financial envelope and required performance from the bike. Every bike's handling depends on various factors such as suspension tuning, weight, tyres and most importantly the strength and rigidity of the frame. Much like a human spine and the supporting skeleton, a motorcycle chassis holds everything together - from the engine, suspension, wheels, fuel tank, handlebars, seat, airbox etc. We take a look at the different types of motorcycle frames based on budget and performance as well as their advantages and disadvantages
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