Doodlefadd
Member
Good day fellow riders globally!
Gonna be a long post!
Kindly seeking insight on an issue that's been bothering well over a week.
2015 gen 2 super tenere, first owner, 100k km mileage. Never involved in traffic accident. Dumb dropping the bike at stationary, a few times in past 5 years.
Nothing done to front end of late, prior to issue appearing.
Problem :
FRONT END RHYTHMIC BOUNCE, ESPECIALLY AT LOW SPEED.
Attempted solutions (together with my local mechanic)
Things done that did not resolve or made any changes to the issue :
-Riding it on different roads and road conditions
-Played with different tyre pressure readings
-Changed to new set of tyres, inspected tyres no humps, and balanced the wheel on the machine (Mitas terraforce r)
-Pinged all spokes (neither me nor shop owns torque spokes wrench), none were flat toned, all pinging high pitch
-Changed front wheel bearings (as 2 forum members did this and it went away for them)
-Checked both brake discs, not warped.
-Checked front pads, not worn. Brakes functional as normal, nothing out of norm in terms of feel on the front brake lever.
-Changed steering head bearing
-Loosen and retightened all clamps & nuts that holds the front suspension in place
-Did a fork service, used all oem parts. Used 5w oil as per manual and previous fork services.
-removed helibar risers and returned handlebar to stock clamps
-opened up clutch system, worn out parts replaced e.g. friction plate and needle wheel bearing of clutch rod (mechanic thought it was a clutch slippage issue = engine vibrating more, at a rhythm pattern)
Things done that made a difference but did not resolve the issue :
-Adjusted and corrected front fork and rear shocks sag to 30% of travel. Bouncing less prominent.
-played with so many different settings for both compression and rebound. Realized bounce goes close to disappearing when comp and rebound is 1 click away from FULL HARD.
Current causes of concerns
- I was not around during the fork service. Came to shop, collected bike, was told to test it out overnight and return if any issue. On that same night, together with a mate, realized I had high fork stiction. When either compressed down or extended up, fork 'stucked' and refused to return. Heed to dave moss advice on YouTube on greasing the dust cap region, resolves 70% of the stiction (still not within 5-15ml stiction acceptable range) sounds like a shady job yea? But my mechanic is an established Suspensions tuner, and has good relationship with me.
-the current setup where comp and rebound are one click out of full hard, is the best by far. But by setting it up that way, am I actually masking bigger issues that is actually the problem? And I'm sure It will pose a safety concern if I keep the setting this way yea?
Any inputs on the matter?
Gonna be a long post!
Kindly seeking insight on an issue that's been bothering well over a week.
2015 gen 2 super tenere, first owner, 100k km mileage. Never involved in traffic accident. Dumb dropping the bike at stationary, a few times in past 5 years.
Nothing done to front end of late, prior to issue appearing.
Problem :
FRONT END RHYTHMIC BOUNCE, ESPECIALLY AT LOW SPEED.
- bounce occurs most prominent at low speed, at around 40km/h or less, especially felt when clutched in and allowing bike to roll.
- It is not a constant bounce. It is rhythmic. When riding at low speed, or when clutching in and rolling the bike at low speed, it will bounce bounce bounce. . . . . Bounce bounce bounce. . . . . . Bounce bounce bounce.
- Bounce is only up and down, not side to side.
- Nature of bounce follows how soft or hard the comp/rebound settings are. Softer setting, its a plushy bounce, harder setting its a jerking up down bounce.
- Intervals between 2 given set of bounces gets closer as the speed gets higher. And vice versa. Slower speed, bigger interval between bounce set.
Attempted solutions (together with my local mechanic)
Things done that did not resolve or made any changes to the issue :
-Riding it on different roads and road conditions
-Played with different tyre pressure readings
-Changed to new set of tyres, inspected tyres no humps, and balanced the wheel on the machine (Mitas terraforce r)
-Pinged all spokes (neither me nor shop owns torque spokes wrench), none were flat toned, all pinging high pitch
-Changed front wheel bearings (as 2 forum members did this and it went away for them)
-Checked both brake discs, not warped.
-Checked front pads, not worn. Brakes functional as normal, nothing out of norm in terms of feel on the front brake lever.
-Changed steering head bearing
-Loosen and retightened all clamps & nuts that holds the front suspension in place
-Did a fork service, used all oem parts. Used 5w oil as per manual and previous fork services.
-removed helibar risers and returned handlebar to stock clamps
-opened up clutch system, worn out parts replaced e.g. friction plate and needle wheel bearing of clutch rod (mechanic thought it was a clutch slippage issue = engine vibrating more, at a rhythm pattern)
Things done that made a difference but did not resolve the issue :
-Adjusted and corrected front fork and rear shocks sag to 30% of travel. Bouncing less prominent.
-played with so many different settings for both compression and rebound. Realized bounce goes close to disappearing when comp and rebound is 1 click away from FULL HARD.
Current causes of concerns
- I was not around during the fork service. Came to shop, collected bike, was told to test it out overnight and return if any issue. On that same night, together with a mate, realized I had high fork stiction. When either compressed down or extended up, fork 'stucked' and refused to return. Heed to dave moss advice on YouTube on greasing the dust cap region, resolves 70% of the stiction (still not within 5-15ml stiction acceptable range) sounds like a shady job yea? But my mechanic is an established Suspensions tuner, and has good relationship with me.
-the current setup where comp and rebound are one click out of full hard, is the best by far. But by setting it up that way, am I actually masking bigger issues that is actually the problem? And I'm sure It will pose a safety concern if I keep the setting this way yea?
Any inputs on the matter?