USE Vybe - Top Out ...
 

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USE Vybe - Top Out Thunk

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Posts: 4846
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Topic starter
 

This one takes me back to the early 90s and elastomer sprung(?) forks ...

I recently purchased a USE Vybe seatpost with a hard elastomer set up.

I've played with the preload but I'm still getting a proper top out thunk.

Despite being towards the **cough** top end **cough** of the hard weight category I'm not getting a huge amount of movement*  and with the more preload wound in the travel is becoming more on/off.

What am I going wrong?

I used an original USE suspension post BITD and don't recall such issues.

*   I appreciate that it only needs to move a small amount to make a noticeable difference.

 
Posted : 22/04/2024 9:45 am
 5lab
Posts: 7921
Free Member
 

i doubt the internals are complex enough to avoid top out thunking - you need either a negative spring or decent rebound damping and from memory the internals of a use seatpost is just a basic elastomer?

 
Posted : 22/04/2024 10:48 am
Posts: 4846
Full Member
Topic starter
 

@5lab - You are bang on - there are a couple of elastomers and a spring:

https://www.exposure-use.com/Brands/Ultimate-USE/Products/Spares-and-Accessories/Service-Items/Universal-Shokpost-Spring-Kit-SP

I'm just surprised that it doesn't appear mentioned in any reviews - which makes me think its me 🙁

 
Posted : 22/04/2024 11:59 am

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