School me on fork tube extensions
Club Member
Joined: Oct 2011
Posts: 11,175
Likes: 2,483
From: Nor Cal
Since you quoted me, I'll clarify and edit the last part for anyone reading because one wouldn't have to use fork tube extensions as I stated above, but it's still custom work ...
You would have to make new Longer lower section or make an extension and Mod the existing, then add a same exact spacer right above the Top-Spring. Effectively shifting everything up by whatever lengths you had made and maintaining the same exact travel
So you're using 25.5" Gold Tubes?
.
You would have to make new Longer lower section or make an extension and Mod the existing, then add a same exact spacer right above the Top-Spring. Effectively shifting everything up by whatever lengths you had made and maintaining the same exact travel
So you're using 25.5" Gold Tubes?
.
Last edited by multihdrdr; May 14, 2020 at 05:51 PM.
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Road Master
Joined: Dec 2008
Posts: 949
Likes: 160
From: San Angelo,TX
Since you quoted me, I'll clarify and edit the last part for anyone reading because one wouldn't have to use fork tube extensions as I stated above, but it's still custom work ...
You would have to make new Longer lower section or make an extension and Mod the existing, then add a same exact spacer right above the Top-Spring. Effectively shifting everything up by whatever lengths you had made and maintaining the same exact travel
So you're using 25.5" Gold Tubes?
.
You would have to make new Longer lower section or make an extension and Mod the existing, then add a same exact spacer right above the Top-Spring. Effectively shifting everything up by whatever lengths you had made and maintaining the same exact travel
So you're using 25.5" Gold Tubes?
.
Outstanding HDF Member
Joined: Mar 2011
Posts: 2,852
Likes: 816
From: Niagara Falls, Canada.
No, you can't use Fork Tube Extensions with those Progressive Monotubes 
You can physically attach some extensions, but because those Cartridges are a Finite Max length you would gain No Height and the extra length would be inside the slider and just reduce your fork travel
That's why they make different versions (lengths) for the NON-Wide Glide Dynas and then the Wide Glide
.
You can physically attach some extensions, but because those Cartridges are a Finite Max length you would gain No Height and the extra length would be inside the slider and just reduce your fork travel
That's why they make different versions (lengths) for the NON-Wide Glide Dynas and then the Wide Glide
.
Seasoned HDF Member
Joined: Jan 2011
Posts: 157,525
Likes: 57,081
From: Michigan 15 Minutes East Of Hell
A fork tube gets rigidity and strength by being one piece. By making it 2 pieces, it's a stress point and only as strong as the threaded joint. Not to mention the way those threads are formed, either rolled or cut. Then consider that the wall thickness of the tubes and the extensions may be of different thicknesses. If proper radius or filet is not there then stress cracks form and eventual failure. So, machining and engineering aside, a piece of tubing with an extension is severely weakened. While riding a bike those forks flex and bend a lot whether you realize it or not. Not hard to picture the outcome if your fork legs break while putt'in down the freeway and sooner or later you end up badly.
Club Member
Joined: Oct 2011
Posts: 11,175
Likes: 2,483
From: Nor Cal
You could physically attach a Tubular extension, but Not achieve the desired results.
Using a solid slug is Not possible
... in regards to these "Progressive Monotubes"
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Last edited by multihdrdr; May 15, 2020 at 09:12 AM.
Seasoned HDF Member
Joined: Aug 2017
Posts: 5,562
Likes: 4,759
From: Albuquerque, NM
I've seen solid tubular extensions as well. It fits into the top triple tree, and screws into the top of the fork tube, so the fluid would still stay in the same space as usual, so any cartridges or springs would not need to be changed or extended. However, most that I see now are those which are hollow, or with a small section in the middle that is still solid, and come with a spacer to go in the bottom, and a small tube extension which may or may not have a solid center, but which would probably require at least topping off the fluid there.
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