Knock in the fork ? - Yamaha FJR Forum : Yamaha FJR Owners Forums
 
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post #1 of 6 (permalink) Old 10-18-2020, 06:43 AM Thread Starter
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Knock in the fork ?

I can hear some knocks when riding. They say it can be in flip forks AC (AE) models
What can make this sound inside of fork? Is that possible to fix that?
There was an opinion that it can be just spring knocking when work inside of fork.
Did you have the same knocks in your FJR1300 AC (AE) ?
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post #2 of 6 (permalink) Old 10-18-2020, 07:13 AM
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It's more likely to be brake pads than fork springs.
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post #3 of 6 (permalink) Old 10-18-2020, 08:13 AM
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If you are speaking Euro AE or US ES, note there are no top-out springs in the upside down forks as in conventional forks. It may be that when the front end rises to the limit of travel you'll hear a knock.
Otherwise, it could be natural noise from the brake rotors (floating rivets have clearance), brake pads, or loose fasteners. One place to look is the deflector shield under the lower triple clamp, or brake line clamps.

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post #4 of 6 (permalink) Old 10-18-2020, 09:38 AM
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Knock in the fork ?

Quote:
Originally Posted by Kiber View Post
I can hear some knocks when riding. They say it can be in flip forks AC (AE) models
What can make this sound inside of fork? Is that possible to fix that?
Kiber,

If the knocks happen on rough spots in the road, you may want to check (or maybe change) your steering head bearings. The OEM ball bearings are no a good choice for the steering head; many riders change to tapered roller bearings there. At a minimum, check that the steering head bearing hardware has the correct torque value, per the FSM.

What year/model FJR do you have there? It helps, for your questions, if you would put (edit) that info into your signature.
.

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Red
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P.S. Life is too short, and health is too valuable, to ride on cheap parade-duty tires.
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post #5 of 6 (permalink) Old 10-18-2020, 12:34 PM Thread Starter
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Quote:
Originally Posted by red View Post
Kiber,

If the knocks happen on rough spots in the road, you may want to check (or maybe change) your steering head bearings. The OEM ball bearings are no a good choice for the steering head; many riders change to tapered roller bearings there. At a minimum, check that the steering head bearing hardware has the correct torque value, per the FSM.

What year/model FJR do you have there? It helps, for your questions, if you would put (edit) that info into your signature.
.
I have FJR1300AS 2017 from Japan
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post #6 of 6 (permalink) Old 10-19-2020, 07:21 AM
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Steering head bearings can give you a knock feel/sound if they are loose or worn.

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