| 翻訳と辞書 |
| Yamaha TZR250 ： ウィキペディア英語版 |
Yamaha TZR250
The Yamaha TZR250 is a motorcycle manufactured and produced by the Japanese motorcycle manufacturer Yamaha between 1986 and 1996.
Yamaha produced the road going 2-stroke motorcycle, loosely based on the TZ250 Yamaha racing bike. Parallel-twin, reverse cylinder and finally V-twin variants were produced. It evolved as a natural replacement for the popular RD 250/Yamaha RD350LC series of the 1980s. It has the Yamaha Power Valve System (YPVS) which raises and lowers the exhaust port depending on the rpm of the engine. The YPVS servo motor starts to open at about 6,000rpm. In standard form 50 bhp is claimed at 10,000rpm. Although mid 40s is more realistic, and will not rev much above 9,500rpm in standard trim, owing to the restrictive standard exhausts and ignition boxes.
==Racing==
Still raced in the (Yamaha Past Masters ) race series with the British racing club - BMCRC. Racing engines currently claiming circa 56 bhp @ 11,000rpm. Racing fuel ratios typically 1:30. Standard exhausts are difficult to improve on in terms of power and torque, but they are very large and impede ground clearance. Jolly Moto exhausts are popular replacements as they are lighter, produce similar performance, allow better ground clearance.
In 1987 Mat Oxley was the first person to lap the Isle of Man TT course at over 100 mph, riding this model. An F3 racing kit was produced for a few years which included ignition boxes, carbs and exh, helping increase maximum revs, power and torque.
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「Yamaha TZR250」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.
|
|