Model 26-Mountaineering bike Features: It is modified from a mountain bike and generally looks no different from ordinary mountain bikes.
Mountaineering car frame: Mountaineering car frame is generally short, which is conducive to giving athletes more space. The lighter the frame, the better. Generally, it is more appropriate to choose aluminum alloy or titanium alloy, the former is economical and the latter is noble goods. Note: carbon fiber scaffold is forbidden to be used as a climbing scaffold, because it is light in weight, but its strength is difficult to guarantee and expensive. Not suitable for mountain climbing. The frame you see above the car is a popular aluminum alloy frame. The price is around 250-400 yuan, but there is something better.
The front fork of the climbing car: the question to consider is your weight and your requirements for the car. There are many aluminum alloy front forks, which are very light, but the inferior strength is difficult to guarantee. If you are a scholar, I suggest buying a molybdenum-clad steel front fork. The weight, performance and price are in direct proportion. Very good. The only thing worth noting is that if you want to install a disc brake in the front, please choose a front fork with a disc brake hole.
Mountaineering handlebar: The strength of the handlebar must be high. The longer the handlebar, the better the balance of the car. However, the longer the handlebar, the more difficult it is to get through obstacles. There are not many handlebars to choose from in the northern market of China, so they are generally used. Amoeba 192 is enough.
Transmission system of mountaineering vehicle: the transmission part includes: toothed plate, chain, flywheel and front and rear derailleur. Generally, the speed ratio of climbing vehicles is 22: 19, that is, the gear crawler has 22 teeth and the flywheel 19 teeth. While some gear crawlers have only 24 teeth, you can also adjust the flywheel to the speed ratio of 24: 2 1. Commonly used speed ratios are 22: 19, 24: 2 1, 22: 18, 22: 17.
Wheelsets in the climbing car: Wheelsets (that is, wheels) The climbing car requires higher rear wheels, so the rear wheels should be more focused in the choice of wheels. For example, the circle used at the back can be the width of the sun. The rear wheel can be wider than 2.35. And the front wheels can be light.
Guard plate of climbing car: guard plate: it is very important when it reaches the intermediate level, and it is also unique to climbing bicycles (some street cars also have it now). The material is mostly steel or aluminum alloy, and the size is about 2cm larger than the diameter of the tooth plate. It is installed parallel to the toothed plate to protect the toothed plate and chain when stuck.
Model 20-Mountaineering Vehicle Features: A bicycle specially designed for climbing, with all parts dedicated to climbing.
Small climbing frame: Of course, the frame of the 20-type climbing bike is the frame of the 20-type car. Because it is generally a special frame, the design angle and concept are good. When choosing a frame, weight, strength and style are the most important.
Small climbing fork: the front fork of the car is also dedicated, and the fork length of the front fork is generally similar to that of the big car. Generally, the frame has a supporting front fork. If you can't find the front fork, you can modify it with the front fork of the cart to change the position of the platform. But it takes some skill. You can also choose a disc brake.
Small climbing transmission: Because it is a special vehicle, the vehicle has only one speed ratio. If you want to change the speed ratio, you must change the rear flywheel or the front flywheel. The position of the living flywheel of a small car is not like that of a big car. The flywheel of the cart is mounted on the rear axle, and some cars are mounted on the central axle.
Small climbing wheelset: 20 wheelset has stronger structure and stronger impact resistance, which is one of the advantages of small cars. The circle of a small car is generally not as easy to form an L shape as the wheelset of a big car.
Small climbing fender: the fender of the car is also special, which is located under the frame and made of aluminum alloy or steel plate. Compared with the guard plate of the cart, the stability of the guard plate of the cart has increased a lot.