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Fork Tube Extensions?

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Old Oct 16, 2024 | 11:11 PM
  #21  
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Originally Posted by snake_eyes
Extended dampers like the TrakerDie/TillDeath stuff will get you height, not travel. You need longer springs and tubes to get more travel. The longer dampers just push all the stock stuff up higher inside the stock tubes. Since travel doesn't change extending the stock tubes higher out of the sliders doesn't present an issue.

This is just wrong and backwards

Longer dampers increase the amount of volume between the bottom of the slider and bottom of the upper tube, increasing travel.

Longer tubes or springs gives you height, not travel.
 

Last edited by 96hugger; Oct 16, 2024 at 11:14 PM.
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Old Oct 17, 2024 | 09:09 AM
  #22  
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Originally Posted by 96hugger
This is just wrong and backwards

Longer dampers increase the amount of volume between the bottom of the slider and bottom of the upper tube, increasing travel.

Longer tubes or springs gives you height, not travel.
Extended dampers simply move everything higher in the fork leg, all other components stay the same, even the air gap. The stock springs are not going to magically compress more to add n extra inches. So where exactly is this extra travel coming from?

Edited for clarity.
 

Last edited by snake_eyes; Oct 17, 2024 at 12:00 PM.
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Old Oct 18, 2024 | 07:06 AM
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Originally Posted by snake_eyes
Extended dampers simply move everything higher in the fork leg, all other components stay the same, even the air gap. The stock springs are not going to magically compress more to add n extra inches. So where exactly is this extra travel coming from?

Edited for clarity.

No it does not. It increase the volume in THE LOWER SLIDER. Not the upper tube. Go back and look at the pictures weekends posted. It doesn't "push" anything upwards. It pushes the lower slider downwards.

The springs do not dictate how much travel you have.. Increasing the length of them also increases height/travel. In this case also increasing travel.


Shock absorbers and telescopic forks are not the same.

Edit: too wordy
 

Last edited by 96hugger; Oct 18, 2024 at 07:55 AM.
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Old Oct 18, 2024 | 07:27 AM
  #24  
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Old Oct 18, 2024 | 08:06 AM
  #25  
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The length of the damper shaft dictates the amount of travel.

If you only change fork tubes, the travel will be unchanged, even if you use 50-foot-long tubes...
 
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Old Oct 18, 2024 | 08:09 AM
  #26  
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Originally Posted by 96hugger;21843384[b
]No it does not[/b]. It increase the volume in THE LOWER SLIDER. Not the upper tube. Go back and look at the pictures weekends posted. It doesn't "push" anything upwards. It pushes the lower slider downwards.

The springs do not dictate how much travel you have. The damper rods are essentially the "shaft" of a shock absorber. Increasing the length of them also increases height/travel. In this case also increasing travel.


Shock absorbers and telescopic forks are not the same.
"No it does not" is not an explanation of where the extra travel comes from. Additionally, you quote me as saying "push" and I said no such thing. I said the components of the fork are "moved" higher in the leg. I think you need to do some reading on how the mechanics of the design work. Adding fluid volume in the slider by itself is not going to add travel, the spring would also need to be extended. The fluid in the slider provides damping and rebound as it pushes against the air gap in the tube, nothing more. As I said before, every component is moved higher by the extended damper and the air gap doesn't change. I went through this whole process a couple of years back and learned a ton from the experts here on the forum, read through this and you'll learn a lot. See here Performance Fork Rebuild - Harley Davidson Forums (hdforums.com) and here Fork Oil Level - Harley Davidson Forums (hdforums.com)Take a look at the picture below from RaceTech (ignore the Emulator) and it'll help you understand.

And finally, in regard to the screen shot you posted, just because some sales guy tells you something, it doesn't make it true. You should call and ask them to explain how travel is increased and let us all know.




 
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Old Oct 18, 2024 | 08:55 AM
  #27  
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Originally Posted by snake_eyes
"No it does not" is not an explanation of where the extra travel comes from. Additionally, you quote me as saying "push" and I said no such thing. I said the components of the fork are "moved" higher in the leg. I think you need to do some reading on how the mechanics of the design work. Adding fluid volume in the slider by itself is not going to add travel, the spring would also need to be extended. The fluid in the slider provides damping and rebound as it pushes against the air gap in the tube, nothing more. As I said before, every component is moved higher by the extended damper and the air gap doesn't change. I went through this whole process a couple of years back and learned a ton from the experts here on the forum, read through this and you'll learn a lot. See here Performance Fork Rebuild - Harley Davidson Forums (hdforums.com) and here Fork Oil Level - Harley Davidson Forums (hdforums.com)Take a look at the picture below from RaceTech (ignore the Emulator) and it'll help you understand.

And finally, in regard to the screen shot you posted, just because some sales guy tells you something, it doesn't make it true. You should call and ask them to explain how travel is increased and let us all know.

You need to stop arguing things you don't know about.
 
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Old Oct 18, 2024 | 08:56 AM
  #28  
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Originally Posted by Dan89FLSTC
The length of the damper shaft dictates the amount of travel.

If you only change fork tubes, the travel will be unchanged, even if you use 50-foot-long tubes...


Thank you Dan.
 
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Old Oct 18, 2024 | 08:58 AM
  #29  
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Tell me you don't know how to work on your bike without telling me you don't know how to work on your bike
 

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