Do Chainstay Adjustments Effect Travel?

WMullins
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Joined
12/1/2022
Location
Blind Bay, BC CA

Bit of a niche question but interested to hear if anyone else has thought of this before. I recently picked up a 2023 GT Force and went to swap the adjustable chainstay from the short (435) to the long (445) position and started wondering if the extension would add travel to the rear end. My thinking is if you extend the rear axle to a ludicrously short or long position, it would very obviously lead to a more exaggerated arc and therefore more or less travel. I looked around online but couldn't find anything talking about this. It could be that brands don't feel the need to address this as the added travel is only a few mm or so but I thought I'd see what you all think.

1
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4/25/2024 7:09pm

It definitely does, but not a significant amount. A good experiment is forget I ever said that and then try both. 

5
WMullins
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18
Joined
12/1/2022
Location
Blind Bay, BC CA
4/25/2024 7:13pm

It definitely does, but not a significant amount. A good experiment is forget I ever said that and then try both. 

Interesting! Thanks for the response

1
dolface
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1907th
4/26/2024 6:33am

"Affect" Laughing (Or, "Will Chainstay Adjustments Effect a Travel Change?")

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1
4/26/2024 3:27pm
WMullins wrote:
Bit of a niche question but interested to hear if anyone else has thought of this before. I recently picked up a 2023 GT Force and...

Bit of a niche question but interested to hear if anyone else has thought of this before. I recently picked up a 2023 GT Force and went to swap the adjustable chainstay from the short (435) to the long (445) position and started wondering if the extension would add travel to the rear end. My thinking is if you extend the rear axle to a ludicrously short or long position, it would very obviously lead to a more exaggerated arc and therefore more or less travel. I looked around online but couldn't find anything talking about this. It could be that brands don't feel the need to address this as the added travel is only a few mm or so but I thought I'd see what you all think.

While the change in travel is minimal, the change in leverage ratio is also pretty minimal but can be noticeable depending on the bike. On some bikes, I've needed to add a couple of psi to achieve the same sag percentage when switching to the longer chainstay position. 

3

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