Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
|
techtalk:ref:svcproc11d [2021/08/23 05:11] hippysmack [What Causes the 1991-2003 Shift Drum Pins to Walk Out of the Drum] |
techtalk:ref:svcproc11d [2024/01/21 06:11] (current) hippysmack |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | ||
| - | ====== REF: Service Procedures 11E ====== | + | ====== REF: Service Procedures 11D ====== |
| ====== What Causes the 1991-2003 Shift Drum Pins to Walk Out of the Drum ====== | ====== What Causes the 1991-2003 Shift Drum Pins to Walk Out of the Drum ====== | ||
| Line 17: | Line 17: | ||
| **Shift drum endplay also has a roll in the angle of pull from the pawl also**. \\ | **Shift drum endplay also has a roll in the angle of pull from the pawl also**. \\ | ||
| The pawl will pull the drum out or in (depending on the current drum position as opposed to the current pawl push/pull direction). \\ | The pawl will pull the drum out or in (depending on the current drum position as opposed to the current pawl push/pull direction). \\ | ||
| - | So when the pawl grabs a pin, it actually moves the shift drum during that throw. \\ | + | So when the pawl grabs a pin, it actually moves the shift drum sideways during that throw. \\ |
| - | Shift fork and transmission gear movement will also shift the drum as will vibration. \\ | + | Shift fork and transmission gear movement will also move the drum sideways as will vibration. \\ |
| - | In fact, you can stand the bike upright, slap the seat and the drum will shift. \\ | + | In fact, you can stand the bike upright, slap the seat and the drum will move sideways. \\ |
| - | The act of leaning into a curve will also shift the drum (if it's not already shifted in that direction). \\ | + | The act of leaning into a curve will also move the drum (if it's not already moved in that direction to extreme end). \\ |
| | Shift drum end play ((photo by Hippysmack)) | | | Shift drum end play ((photo by Hippysmack)) | | ||
| Line 59: | Line 59: | ||
| However, if it was the drum getting too hot, all the pins would be subject to walking out. \\ | However, if it was the drum getting too hot, all the pins would be subject to walking out. \\ | ||
| - | |Example of pins pulled out on of xLoneRiderx's shift drum. \\ See the spikes in the side of the pin that create the interference fit in the hole. ((photos by xLoneRiderx of the XLFORUM http://xlforum.net/forums/showthread.php?t=2078814&highlight=detent&page=20))|| | + | |Example of pins pulled out on of xLoneRiderx's shift drum. \\ See the spikes in the side of the pin that create the interference fit in the hole. ((photos by xLoneRiderx of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/201713-1250-unhappiness-2020-edition/page20?t=2078814&highlight=detent&page=20))|| |
| |{{:techtalk:ref:svcproc:shift_drum_pin_pic1_by_xloneriderx.jpg?direct&300|}}| {{:techtalk:ref:svcproc:shift_drum_pin_pic2_by_xloneriderx.jpg?direct&300|}}| | |{{:techtalk:ref:svcproc:shift_drum_pin_pic1_by_xloneriderx.jpg?direct&300|}}| {{:techtalk:ref:svcproc:shift_drum_pin_pic2_by_xloneriderx.jpg?direct&300|}}| | ||
| Line 82: | Line 82: | ||
| One idea is to weld the pins to the drum. \\ | One idea is to weld the pins to the drum. \\ | ||
| However, the load is going to happen any way due to construction and clearances up stream of the pawl (and pin movement is actually a symptom and not a cause). \\ | However, the load is going to happen any way due to construction and clearances up stream of the pawl (and pin movement is actually a symptom and not a cause). \\ | ||
| - | |||
