| 摘要 |
A simple change gear transmission utilizing an improved clutch structure and/or an improved idler structure to provide compounded countershafts is provided. The improved clutch structure involves the use of axially adjacent tube clutch members (76, 90) operated by side-by-side shift forks (86, 100) to selectively clutch one at a time four axially adjacent mainshaft gears (50, 52, 54, 56) to a mainshaft (18). Compound countershaft (16) comprising a forward portion (20) and a rearward portion (22) are provided for increasing the number and/or range of gear ratios. A combination tube clutch-idler shaft (108) is utilized to provide increased reduction to the rearward countershaft portion for first gear and reverse gear operation of the transmission. |
