The speed of the crankshaft in an engine is measured in revolutions per minute (RPM). The exact speed of the crankshaft can vary depending on the engine design and its intended use. In a typical car engine, the crankshaft speed can range from around 600 RPM at idle to over 6000 RPM at full throttle. The speed of the crankshaft is crucial for determining the engine's performance and power output. **

The choice between TKP (traditional kingpin) and RKP (reverse kingpin) trucks depends on the specific needs and preferences of the rider. TKP trucks are typically better suited for street and technical skating, as they offer more stability and responsiveness for tricks and maneuvers. On the other hand, RKP trucks are often preferred for longboarding and cruising, as they provide smoother turns and better stability at higher speeds. Ultimately, the best choice will depend on the individual rider's style and the type of skating they plan to do. **

The rotation speed of the crankshaft in an engine is measured in revolutions per minute (RPM). The speed at which the crankshaft rotates depends on the engine design and the power output required. In a typical car engine, the crankshaft rotates at around 1,000 to 6,000 RPM during normal operation. Higher performance engines may have a higher maximum RPM for increased power output. **

A kickstart crankshaft is designed to be manually started by using a kick lever, requiring physical effort from the rider to start the engine. On the other hand, an electric start crankshaft is equipped with an electric starter motor that allows the rider to start the engine with the push of a button, without the need for physical exertion. Electric start crankshafts are typically found on more modern motorcycles, offering convenience and ease of use compared to kickstart crankshafts. **

Yes, there are cheaper alternatives to the Yamaha TY 50. There are several other brands that offer similar small-displacement motorcycles at a lower price point. Some examples include the Honda CRF50F, Kawasaki KLX110, and Suzuki DR-Z50. These bikes are designed for beginners and are often more affordable options for those looking for a small, entry-level motorcycle. **

The crankshaft slides horizontally through the use of bearings and lubrication. The bearings are placed at specific points along the crankshaft to reduce friction and allow for smooth horizontal movement. Additionally, lubrication is applied to the bearings to further reduce friction and ensure the crankshaft can slide easily. This horizontal movement is essential for the crankshaft to transfer the up-and-down motion of the pistons into rotational motion. **

The original crankshaft may or may not be able to handle it, depending on the specific circumstances. Factors such as the engine's power output, the type of modifications being made, and the condition of the original crankshaft will all play a role in determining whether it can handle the changes. It's important to consult with a knowledgeable mechanic or engineer to assess the crankshaft's capabilities and determine if any upgrades or replacements are necessary. **

The crankshaft can be filed by using a precision file to remove any burrs, nicks, or imperfections on the surface. It is important to use a file that is specifically designed for metalworking and to work carefully and methodically to avoid damaging the crankshaft. The filing process should be done with the crankshaft securely held in place to prevent any movement or flexing. After filing, the crankshaft should be thoroughly cleaned and inspected to ensure that the filing has achieved the desired result. **