After decades of pretty much shaft drives, there was a Harley (belt) and Suzuki (chain) in the mix, I am now riding a F850GS. Enjoy the bike. For a twin, the engine is quite smooth, especially with cruise control that lightens the grip. And now that I have a Sargent seat, Madstad windshield system and Suburban Machinery lowering pegs it is dialed in. However, I find the chain sag to be too much, even when set per BMW's process and permissible setting.
The process is bike on the side stand with no weight on it, measure low and high of chain mid point between sprockets - typical stuff. The problem is I can't get a correct low high point (40 to 50MM is the allowable range) because the rubber pad mounted on swing arm doesn't allow chain to move as high as it probably would. So I depress it to zero on my gauge and then push up...it will hit the rubber at 45mm, but it is obvious it could go high if the rubber chain slap guard wasn't there. Just looks and feels like chain has too much sag and a proper measurement can't be made. Any other chain driven Beemers with same problem? Never had this measurement obstruction with Japanese bikes back in the day...and allowed clearance wasn't so large.
The process is bike on the side stand with no weight on it, measure low and high of chain mid point between sprockets - typical stuff. The problem is I can't get a correct low high point (40 to 50MM is the allowable range) because the rubber pad mounted on swing arm doesn't allow chain to move as high as it probably would. So I depress it to zero on my gauge and then push up...it will hit the rubber at 45mm, but it is obvious it could go high if the rubber chain slap guard wasn't there. Just looks and feels like chain has too much sag and a proper measurement can't be made. Any other chain driven Beemers with same problem? Never had this measurement obstruction with Japanese bikes back in the day...and allowed clearance wasn't so large.