Posts
35
Joined
1/5/2016
Location
PT
Edited Date/Time
11/22/2017 11:50am
Hello guys! Just want to share a new episode. Probably the most important one.
I found that many riders out there have a completely "wrong" rebound setting on the rear shocks. In this video I will explain how to correctly tune your rebound damping for achieve a great stability & traction balance. To the best of my knowledge this is the most reproducible and easier method to tune the rebound of a shock. It is also a great starting point for fine-tuning.
Bye from Portugal
I found that many riders out there have a completely "wrong" rebound setting on the rear shocks. In this video I will explain how to correctly tune your rebound damping for achieve a great stability & traction balance. To the best of my knowledge this is the most reproducible and easier method to tune the rebound of a shock. It is also a great starting point for fine-tuning.
Bye from Portugal
I'm thinking that the speed you ride off the curb at might impact how many clicks works or doesn't work. In the Art's vid they go a lot faster and smoother so that must make a difference?!?! http://www.vitalmtb.com/videos/features/How-To-Mountain-Bike-Suspension-Set-Up-with-Arts-Cyclery,25453/sspomer,2
@vitalMTB did the 2016 test sessions include testing the ShockWiz? Would be curious to hear how ShockWiz recommendations stack up with multiple riders, multiple bikes, multiple laps...
I honestly don't recommend the "hand feeling" method to adjust rebound. That's not a reproducible and standarized method. What happens is that each one has different "feelings", so when everybody uses that method what happens is that most of them will end up with an overdamped or very underdamped setting. With the curb test you don't need to master the science behind the "empirical suspension feeling tuneability". Keep it mind that curb-test is a starting point, you might need to increase 1 click or even 2 clicks (towards fast rebound), depending on the bumpiness of your trails.
I recommend to do the curb test while seated on the bike. Because when you are quiet and seated, you get better results (the shock compresses more due to higher weight transfer during curb drop, and you eliminate other variables such as the influence of body movement and the dampening from your legs...yes your legs act also as a suspension!). So, quiet and seated without braking = less variables to mess around = only suspension is working.
Jakers, I recommend doing the test at a slow speed, because at a slow speed the vertical impact is higher, and you compress more the shock (in my vid, I used around 75% of travel on a freeride bike in a little tiny curb! which is impressive given that I have a SAG of 30%). So that tiny curb at slow speeds simulates well a medium-size drop on the trail. By compressing more the shock it's easier for you to check for oscillations. The critical damping adjustment does not depend on how much the shock compresses (size of the curb or speed of the curb test). It only depends on the spring rate and on the sprung mass (rider weight and sprung weigh of the bike). This is why different rider weights and spring rates have different rebound settings (number of clicks) to achieve critical damping.
Bye
I'd also like to see what tools like ShockWiz say, this would be a VERY usefull 'tool' to setup rebound for beginners (and not necessarily only for beginners!).
I like the sounds of another alternative for data acquisition and free sounds like a great price. I check with my bank and they said I can afford that.
I will try to make the video at the end of the week. Stay tunned!
In the next days I will upload a video to show you a FREE method to do these suspension real data acquisition. This is really awesome! :D
Stay tuned!
No, we didn't use ShockWiz during Test Sessions. It's something we're curious about, however, and hope to investigate in the future.
For those tinkering with their rides, here's an additional resource from FOX that might be helpful. They also make note of the curb test. - http://www.ridefox.com/help.php?m=bike&id=86&ref=tuningtips
After many requests, here it is the video with some tips and my personal advice for adjusting the High and Low speed Compression and Rebound damping.
https://youtu.be/Yjql1kExvCE
I hope you find it useful !
Bye
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