| 翻訳と辞書 |
| Mini chopper ： ウィキペディア英語版 |
Mini chopper
Mini choppers are scaled-down versions of custom-built motorcycles known as choppers and are generally constructed from 1" steel tubing or 3/4" steel black pipe. The tube or pipe is bent and then welded together to get the desired angles and shapes of the frame, which is usually custom made.
==Engines and transmission==
Mini choppers use a variety of engines although the most typical would be a Briggs & Stratton or Tecumseh horizontal shaft industrial engine with a non-tapered shaft. Other engines include small motorcycle engines and power sport engines such as ATV and dirt bike engines. If an industrial engine is used,some sort of transmission also needs to be used to apply power to the rear wheel. Centrifugal clutches, which allow the engine to idle without moving the chopper, are also used however they result in a fixed gear ratio for both low and higher speed operation. However, some people opt to make a jackshaft, which allows the builder to change the gear ratio to his liking or to change which side the axle sprocket is on.
There is also a transmission called a torque converter, or CVT (Continuously Variable Transmission). The torque converter is essentially an automatic transmission that changes gear ratios according to the speed of the engine. When the engine is at low RPMs, the gear ratio is at 1:x, depending on the ratio the torque converter has (This allows for more lower end torque). As the speed rises, the gear ratio changes to 1:1. As the higher end RPMs are reached, the gear ratio reaches X:1, which allows for a higher top speed.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Mini chopper」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|