There are several advantages to upside down forks
Reduced Unsprung Weight
Reduced Sprung Weight
Reduced Stanchion Friction Levels
Increased Stanchion to Slider Overlap
Image of the lower portion of a pair of inverted forks
The largest delta between the legacy standard fork and an inverted fork is in their strength. ...
The slider and internal oil valving are removed.
The stanchion (inner fork tube) is placed on v-blocks
A dial indicator is used to detect deflection as the stanchion is rotated
Once deflection is understood a hydraulic press is used to bend the stanchion back to its original state.
The process of measurement and bending with the ...
1985 - 1987
All GSXR Models have the 'standard' forks with an anti-dive unit mounted on the slider. The anti-dive unit was actually an adjuster for compression dampening, closing off oil orifices in order to give the front end a 'stiffer' This concept first showed up on the 1985 GS 1150 models.
1988 - 1989
The slider loses the adjustable compression ...
Back in the '80's, I did motorcycle collision repair professionally in California. I straightened quite a few bent forks, using a hydraulic press. We would straighten the triple clamps along with the fork tubes.
First, if the bend was severe, there is likely a crease in the fork tube along the lower edge of the lower triple clamp. We would turn the fork ...
You can use fiber glass cloth and fiber glass resin
It will hold everything together nicely. It won't separate from the part later if you clean all of the surfaces enthusiastically. It's easy.
I recommend getting some disposable gloves to use while you do this.
Once you have the bits in pieces in place properly you can line the inside with some fiber ...
Don't know about the CB400's fork in particular, but on some forks the bushings won't fit past eachother to allow easy removal of the stanchion ("pipe" 6 on diagram) from the slider ("case", 19 on diagram). Here's a partzilla diagram of a CB400F fork.
On some BMWs with SHOWA forks that I've worked on, the lower bushing (9, attached to pipe 6) won't fit ...
If you had the "forks done" then take it back to whoever rebuilt your fork and let them know that it leaks now. If a rebuild was not performed on the fork, it now should be. If you're getting fork oil on your break rotors, that is a very serious issue and will cause squeaking and loss of friction.
Greater Torsional Stability.
Why should flipping the orientation cause any difference?
Without getting into a detailed analysis, you can imagine that most of the stresses on the fork can be assumed to be concentrated just below the bottom yoke.
Eg, while braking (front), the wheel slows down- pushing the bike back through the forks causing a bending moment ...
You will require the appropriate spanner wrench to remove the primary bolt and the locking bolt.
Here is an image
Once you have removed the bolts you will be able to remove the top plate of the triple tree and the bottom portion will stay attached to the forks.
Best of luck.
The rubber seals that are staying on the inner fork tube after riding are called dust seals. They are one of two seals that are used to seal the fork slider onto the inner fork tube.
The first seal you see, the dust seal, does not prevent the oil from leaking out. When you look into the the area where the dust seal would go you will see your oil seal.
Yes your oil seal is broken , get than fixed asap.
Fork Bending on the FZ-S is a very common issue , though its a 43mm
fork it bends quite easily, so slight bend might have caused due to
driving fast onto a pothole or an accident as you say.
There are two things you can do for this situation.
Yes you can fix it but it will be still noticeable(if you know ...
What do you mean when you say, "I got the forks done"?
A bent fork stanchion should be replaced. Some places can straighten forks, but it needs to be a very subtle bend. Straightening can also weaken the fork. The cost to do this is roughly the same as a used replacement, so replacement is preferable.
If you put new fork seals on a bent fork they won't ...
The fork seals are leaking due to the bent fork tubes. Firstly these require straightening which is a specialist job.
If the fork tubes are not perfectly straight and smooth the seals will always leak.
The forks on a Ducati Hypermotard 1100 have 3 major components. The stanchion, the fork, and the boot. Damaging the stanchion is almost impossible, it is a thin section of aluminum that is well protected. The boot generally shows visible signs of damage, such as cracks or stripped fasteners.
The fork tubes are always of a steel construction. It's much ...
Its unlikely, although not impossible. Bending the rear swingarm is highly unlikely as is changing its setup, as the swingarm and wheel bearings are not usually adjustable. Any damged or broken bearings would be noticed rather quickly. Rear shock settings are adjustable but wouldn't be affected unless you really knocked the swingarm sideways, as in a high ...
Fork oil leak: As suggested by others, it seems to be a fork oil seal issue. Make sure that when you take your bike to the Bajaj service station next time, the mechanics do the job right, in front of you. Bajaj after sales service is known to be filled with issues. Get the fork bend removed properly, followed by fixing the fork oil seal.
Brakes gone bad: ...
Sounds like you'll need to have the fork legs checked for straightness, the best way to do this unfortunately involves removing the stanchions. And having an engineering shop test the forks on a surface plate.
Some will say that just sliding a fork into and out of it's outer tubes is enough to check for straightness but its not, a leg can slide up and ...
Main advantage is the mentioned above lower unsprung weight that increases the responsiveness of the suspension through reducing the inertia of the moving part of the suspension.
Second important advantage is the fact that the fork stanchions aren't in the path of dirt from the front wheel as is the case in a classic fork - this is the most important ...
Upside down forks where added to the GSXR11 and 750 on the L model in 1990. There are lots of subtle differences and changes since then, and modern stuff is significantly more advanced. Suggest you try and Google part numbers.