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FJR Motorcycle Forums
Technical & Mechanical Problems
Transmission gears updated from 2006/07 to 2008
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<blockquote data-quote="Constant Mesh" data-source="post: 443459" data-attributes="member: 615"><p>Nah!</p><p></p><p>A five dog gear offers easier shifting. The gear has to rotate a maximum of 1/5 of a revolution to engage its dogs. The old gear can rotate up to 1/4 of a revolution to engage.</p><p></p><p>The 3rd and 4th pinion gears are odd ducks in this transmission. They could rotate up to a 1/4 revolution before engaging their dogs.</p><p></p><p>All the other dogged gears offer a maximum of 1/6 rev before engagement. They have 3 dogs but there are 6 receptacle slots on the adjacent gear for the dogs, hence a maximum 1/6 rotation.</p><p></p><p>If you look at the other side of the 3rd gear in your photo you'll see 6 positions rather than 4 or 5.</p><p></p><p>Faster dog engagement equates to easier shifting. Somebody must have decided to do a little housekeeping and said lets clean up the transmission, specifically the 3rd and 4th pinion gears.</p><p></p><p>Yamaha's newer designs tend to have '5 dog' gears.</p><p></p><p>---------------</p><p></p><p>From the Yamaha Canadian site:</p><p></p><p>2008 FJR Info</p><p></p><p>*** Revised 3rd and 4th pinion gears feature an additional engagement dog for improved shifting feeling.</p></blockquote><p></p>
[QUOTE="Constant Mesh, post: 443459, member: 615"] Nah! A five dog gear offers easier shifting. The gear has to rotate a maximum of 1/5 of a revolution to engage its dogs. The old gear can rotate up to 1/4 of a revolution to engage. The 3rd and 4th pinion gears are odd ducks in this transmission. They could rotate up to a 1/4 revolution before engaging their dogs. All the other dogged gears offer a maximum of 1/6 rev before engagement. They have 3 dogs but there are 6 receptacle slots on the adjacent gear for the dogs, hence a maximum 1/6 rotation. If you look at the other side of the 3rd gear in your photo you'll see 6 positions rather than 4 or 5. Faster dog engagement equates to easier shifting. Somebody must have decided to do a little housekeeping and said lets clean up the transmission, specifically the 3rd and 4th pinion gears. Yamaha's newer designs tend to have '5 dog' gears. --------------- From the Yamaha Canadian site: 2008 FJR Info *** Revised 3rd and 4th pinion gears feature an additional engagement dog for improved shifting feeling. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Transmission gears updated from 2006/07 to 2008
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