Fork Squeaking
Thread Starter
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Cruiser
Joined: Feb 2017
Posts: 114
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From: Germany
Fork Squeaking
Hey guys,
I installed on my 2015 SGS progressive springs and new fork oil. The first 50 miles everything is fine. Then the fork start squeaking and persists. I dissembled, checked and reassembled again. The squeaking comes again after about 50 miles and remains.
I bought the harley fork revision kit and replaced all sliding bushings, seals etc. including new fresh fork oil. And again the squeaking starts again after 50 miles.
It's always completely quiet for 50 miles after it has been removed and reinstalled. Then the squeaking comes and remains until I take the fork apart again.
The squeaking is much quieter when I've been driving for a while. If the motorcycle stands for 2-3 hours, the squeaking is loud again.
I can even feel the squeking on the handlebar and on the right fork only. I'm really a little perplexed. If it were built in the wrong way, it would have to be there right from the start.
Here is a video of the squeking. The splash comes from the gastank and the click from the brake pads. Both of these can be ignored.
Has someone an idea?
I installed on my 2015 SGS progressive springs and new fork oil. The first 50 miles everything is fine. Then the fork start squeaking and persists. I dissembled, checked and reassembled again. The squeaking comes again after about 50 miles and remains.
I bought the harley fork revision kit and replaced all sliding bushings, seals etc. including new fresh fork oil. And again the squeaking starts again after 50 miles.
It's always completely quiet for 50 miles after it has been removed and reinstalled. Then the squeaking comes and remains until I take the fork apart again.
The squeaking is much quieter when I've been driving for a while. If the motorcycle stands for 2-3 hours, the squeaking is loud again.
I can even feel the squeking on the handlebar and on the right fork only. I'm really a little perplexed. If it were built in the wrong way, it would have to be there right from the start.
Here is a video of the squeking. The splash comes from the gastank and the click from the brake pads. Both of these can be ignored.
Has someone an idea?
Seasoned HDF Member
Joined: Apr 2015
Posts: 10,001
Likes: 5,266
Are we supposed to hear a "squeak" in your video? I don't.
Was it the Progressive Suspension Fork Spring Kit you installed?
If so, did you install the tighter wound part of the spring coil down (Progressive says if you do, they will be quieter) and did you measure and cut the spacers to the proper length for your preload?
That's all I've got.
Was it the Progressive Suspension Fork Spring Kit you installed?
If so, did you install the tighter wound part of the spring coil down (Progressive says if you do, they will be quieter) and did you measure and cut the spacers to the proper length for your preload?
That's all I've got.
Thread Starter
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Cruiser
Joined: Feb 2017
Posts: 114
Likes: 23
From: Germany
I have the springs from Wilbers. Its from the Nivomat kit
https://www.wilbers.de/pdf_files/mon...rohr_742_3.pdf
They say install progressive forks with tighter wounds upwards and use the standard spacers.
https://www.wilbers.de/pdf_files/mon...rohr_742_3.pdf
They say install progressive forks with tighter wounds upwards and use the standard spacers.
Seasoned HDF Member
Joined: Apr 2015
Posts: 10,001
Likes: 5,266
I have the springs from Wilbers. Its from the Nivomat kit
https://www.wilbers.de/pdf_files/mon...rohr_742_3.pdf
They say install progressive forks with tighter wounds upwards and use the standard spacers.
https://www.wilbers.de/pdf_files/mon...rohr_742_3.pdf
They say install progressive forks with tighter wounds upwards and use the standard spacers.
Thread Starter
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Cruiser
Joined: Feb 2017
Posts: 114
Likes: 23
From: Germany
As you can see here
at 35:35 the tighter wounds installed upwards and is described in the manual of Wilbers.
Anyway, everytime i installed again the fork is quiet for about 50 miles. If the spring is installed wrong it should be have the noise from beginning.
Anyway, everytime i installed again the fork is quiet for about 50 miles. If the spring is installed wrong it should be have the noise from beginning.
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Seasoned HDF Member
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As you can see here https://www.youtube.com/watch?v=-6Ikh1MCq6Q at 35:35 the tighter wounds installed upwards and is described in the manual of Wilbers.
Anyway, everytime i installed again the fork is quiet for about 50 miles. If the spring is installed wrong it should be have the noise from beginning.
Anyway, everytime i installed again the fork is quiet for about 50 miles. If the spring is installed wrong it should be have the noise from beginning.
The upper part of the springs are not immersed in oil. Any oil that is on them when they are installed, dries up after 50 or so miles, so they are squeaking when compressed because there is no lubrication. No lubrication, you get squeaks.
The oil level will be different depending on which way the springs are installed.
So, with the tighter wound part of the spring down, because there is more mass, you would just need to adjust your oil level for that difference.
If you don't want to install them with the tighter part of the springs down, so be it. Then, I suggest you give Wilbur a call for their recommendations.
Good luck!
Thread Starter
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Cruiser
Joined: Feb 2017
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From: Germany
Could be a good theory.
But im not the only one who installed it with the tighter wounds upwards recommended from Wilbers.
And the other ones dont have this noises.
Wilbers also recommended SAE 10 oil instead of factory SAE 20 oil.
My opinion is that maybe the oil is to thin and makes this noises in the damping tube. But that wouldnt explain that the noises come after 50 miles. That is the strange part.
But im not the only one who installed it with the tighter wounds upwards recommended from Wilbers.
And the other ones dont have this noises.
Wilbers also recommended SAE 10 oil instead of factory SAE 20 oil.
My opinion is that maybe the oil is to thin and makes this noises in the damping tube. But that wouldnt explain that the noises come after 50 miles. That is the strange part.
Last edited by serioussv3n; Nov 30, 2020 at 06:58 AM.