jconway607
JohnWC
My k75S was built in 9/90. It's titled as a 1991. According to my reading, it came with the older model Sachs-Fitchel type sport forks, although I'm not sure of that. They have the "S" stamped on the top of the fork tube. I gather that after 8/91 BMW put Showa brand forks on the S bikes. People seem to say the Showas were a better all around fork. Could be why BMW switched them.
I have the proper amount of oil in both legs, and it is 5 wt oil. But I would really prefer a softer dampening over normal road irregularities. The bike handles well, doesn't dive, but is a bit tiresome to ride. Stopped, and locking the front brake, I can rock the fork up and down maybe two inches, so I don't think it is a sticking problem. But on the road, I don't see much movement, and it doesn't fee like it.
I'm considering switching both fork tubes to a C fork. I'm sure they will dive more, but only under hard braking, and maybe the rest of the time make for a smoother ride. But the question is, should I try to find a post 91 set of Showa S forks instead? Are the tube diameters the same? Would that be better than getting a pre 91 C set? How do I know they are the post 91 Showas? Are they marked some way? People trying to unload these old bike parts often don't seem to know that there are subtle differences, just that they are " forks for a K75". My forks have the large, bulbous dust cover. Do the Showas have the more square dust covers? Thanks.
I have the proper amount of oil in both legs, and it is 5 wt oil. But I would really prefer a softer dampening over normal road irregularities. The bike handles well, doesn't dive, but is a bit tiresome to ride. Stopped, and locking the front brake, I can rock the fork up and down maybe two inches, so I don't think it is a sticking problem. But on the road, I don't see much movement, and it doesn't fee like it.
I'm considering switching both fork tubes to a C fork. I'm sure they will dive more, but only under hard braking, and maybe the rest of the time make for a smoother ride. But the question is, should I try to find a post 91 set of Showa S forks instead? Are the tube diameters the same? Would that be better than getting a pre 91 C set? How do I know they are the post 91 Showas? Are they marked some way? People trying to unload these old bike parts often don't seem to know that there are subtle differences, just that they are " forks for a K75". My forks have the large, bulbous dust cover. Do the Showas have the more square dust covers? Thanks.
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