Yes, a mountain bike frame can rust. Mountain bike frames are typically made of steel, aluminum, or carbon fiber. Steel frames are the most susceptible to rust, especially if the paint or protective coating is chipped or scratched, exposing the metal to moisture. Aluminum frames can also corrode and develop a white powdery substance known as aluminum oxide. Carbon fiber frames are resistant to rust, but they can still suffer from damage and delamination if not properly cared for. Regular maintenance and proper storage can help prevent rust and corrosion on a mountain bike frame. **

Mountain bike frames can be purchased at various places, including local bike shops, online retailers such as Amazon or REI, and specialized bike stores. It is important to consider factors such as frame size, material, and intended use when choosing a mountain bike frame. Additionally, it may be helpful to consult with a knowledgeable salesperson or bike mechanic to ensure you select the right frame for your needs. **

The calorie expenditure for road cycling and mountain biking can vary based on factors such as intensity, terrain, and duration. Generally, road cycling on flat terrain at a moderate pace can burn around 400-600 calories per hour, while mountain biking on varied terrain with hills and obstacles can burn around 500-800 calories per hour. The higher calorie expenditure in mountain biking is due to the increased effort required to navigate the challenging terrain and obstacles. Overall, mountain biking tends to result in a higher calorie expenditure compared to road cycling. **

A hardtail mountain bike typically has a frame size that ranges from small to extra-large, with measurements based on the rider's height and inseam length. The frame size determines the overall fit and comfort of the bike for the rider. It is important to choose the right frame size to ensure proper riding position, control, and efficiency while on the trails. **

Whether or not you should stop mountain biking depends on your personal circumstances and reasons for considering stopping. If you are experiencing physical pain or injury from mountain biking, it may be wise to take a break and seek medical advice. If you are feeling burnt out or no longer enjoying the activity, it may be beneficial to explore other forms of exercise or outdoor activities. Ultimately, the decision to stop mountain biking should be based on your own well-being and enjoyment. **

Yes, a frame break on a mountain bike can potentially be welded. However, it is important to note that welding a frame can compromise its structural integrity and may not be a permanent solution. It is recommended to consult with a professional bike mechanic or a welding specialist to assess the extent of the damage and determine if welding is a safe and viable option. Additionally, some manufacturers may void warranties if the frame has been welded. **

No, the mountain bike tire should not hit the frame while riding. If the tire is hitting the frame, it could be due to a misalignment of the wheel or frame, or the tire size may be too large for the frame. It is important to address this issue as it can cause damage to the frame and affect the bike's performance and safety. **

The frame number on a Cube mountain bike is typically located on the underside of the bike frame near the bottom bracket. It is a unique alphanumeric code that serves as the bike's identification number. This number is important for registering the bike, reporting theft, and for warranty purposes. It is recommended to keep a record of the frame number in case it is needed for any reason in the future. **