Why are there only 5 gears on BMW R1150?
Internally there are also some model-specific differences. The reverser mechanism on the K1200LT occupies the space where 5th gear usually lives, so there are only five speeds in all (the 4th gear ratio is changed to better bridge the gap). R1200C prior to the CL also came with only five speeds because BMW skipped 5th.
Where is the shock coupling on a BMW R1150?
The stuff on the rear part of the input shaft is a shock coupling which lets the gear twist to absorb driveline shock. The gear pairs of the intermediate shaft (center) and output shaft (top) are in constant mesh. One gear in each pair freewheels on its shaft and is engaged by locking against a neighboring gear which cannot freewheel on its shaft.
Where are the forks on a BMW R1150?
Two of the forks are identified by arrows in the picture, and the third is on the other side of the drum. At the bottom is the input shaft with the clutch spline on the left. This is where the power comes in, and it drives the intermediate shaft via the helical (angled-tooth) gear.
How are shaft bores measured on BMW R1150?
Using the input shaft bearing bores as an example, the depth I have measured on covers varied by 0.03mm and the cases varied by 0.06mm, for a total possible variation (with these components) of 0.09mm. Figured the same way, the intermediate and output shaft bores also varied by 0.09mm.
Internally there are also some model-specific differences. The reverser mechanism on the K1200LT occupies the space where 5th gear usually lives, so there are only five speeds in all (the 4th gear ratio is changed to better bridge the gap). R1200C prior to the CL also came with only five speeds because BMW skipped 5th.
The stuff on the rear part of the input shaft is a shock coupling which lets the gear twist to absorb driveline shock. The gear pairs of the intermediate shaft (center) and output shaft (top) are in constant mesh. One gear in each pair freewheels on its shaft and is engaged by locking against a neighboring gear which cannot freewheel on its shaft.
Two of the forks are identified by arrows in the picture, and the third is on the other side of the drum. At the bottom is the input shaft with the clutch spline on the left. This is where the power comes in, and it drives the intermediate shaft via the helical (angled-tooth) gear.
Using the input shaft bearing bores as an example, the depth I have measured on covers varied by 0.03mm and the cases varied by 0.06mm, for a total possible variation (with these components) of 0.09mm. Figured the same way, the intermediate and output shaft bores also varied by 0.09mm.