How to CORRECTLY setup rebound damping (MTB rear suspension Ep.5)

[@skibdude]

As a control engineer dealing with PID control and MTB rider this video really makes sense. Wish my teacher showed this video in class to demonstrate the damping term of physical systems!

[@teknology01]

Fox should hire andre he explains better then fox on their website.

[@fatalxty]

spot on!

[@cunning-stunt]

Fox have a Jordi Cortes that explains this better.

[@andrextr]

fb.watch/2MERhqQPYl/ 😄

[@cunning-stunt]

@@andrextr kzbin.info/www/bejne/aYWaZGiBe7dofLs

[@mario_me_Obelix]

​@@andrextr👍🍻

[@jameswilliamjones]

I almost dismissed this video but then realized he’s the only one who actually knows what’ the hell is going on.

[@pauljohn4441]

Perhaps the most boring presenter that I have ever listened to most intently until the end of his presentation. Thanks for making it simple to understand Andre. Great stuff!

[@Scolecite]

Good video finally someone shows the adjustment while on the bike instead of just talking about it.

[@angeldejesus65]

after watching countless videos on how to adjust rear shocks, this video has done the job. it also helped me with the front shocks.

[@andrextr]

+Prince Angel thanks :)

[@sohaibyounus]

I bought a used bike, it took me couple of rides to set the right air in the shock. I thought about setting the rebound but I just ignored it cause it sounded too complex. After watching the curb test I can't wait to set it up. Thank you so much!

[@CRGT666]

Bought a new bike 4 months ago, and wasn't able to set up the rear shock right, until now. Now I get the dynamic of the shock better. Thank you

[@RGCastro7]

Thank you for a great video with very useful information. I will give this a try tomorrow.

[@neildonovan735]

What a great video. Best explaination of mountain bike suspension I've seen. Thank you

[@edmo1982]

Great and correct correlation between advanced engineering concepts and real life. Everything is accurate and this guy for sure is an educated engineer with very good skills.

[@andrextr]

Thanks again. I'm not an engineer, I'm a biochemist this was just an hobby :)

[@edmo1982]

andrextr you do better than many formal educated engineers. Myself included. Took me years to figure out all these concepts and put them all together. If I ever come to lecture vibrations I'll use your videos.

[@hTAAR1]

This finally made rebound make sense to me! Great video and explanation

[@tekjim]

using your video I have retuned my rebound. I previously set it as fast as possible without it being unstable but now found it requires about 25% slower to avoid oscillations. just went for a ride through super rough trails and the bike handles much more stable now!

[@andrextr]

+tekjim Nice. On a very bumpy/rocky trail you can increase a little bit the rebound speed from the non-oscillation point. So, you end up with just a minor tiny oscillation. Bye

[@tekjim]

+andrextr yes I reached the non oscillation point then added 2 extra clicks to make faster. it is perfect now!

[@andrextr]

Nice to know that! Now go shred some trails :)

[@Anto_Levo_Mtb]

I assume the theory for rockshock.... including 3 clicks. best video I've seen at explaining. great work

[@Ghostina1]

WOW Thats is a full and complete Review which every rider needs to understand. Can you pls do that kind of video with Low Speed Compression ???

[@andrextr]

Check this one kzbin.info/www/bejne/j5vUnWShet2peac

[@shanewilson3980]

Thank you for thoroughly yet simply explaining how to adjust rebound..great work, keep it up !!

[@andrextr]

Thank you :)

[@mjojrjr6231]

I've added this to my list, very well explained setting up of Rear shocks rebound.

[@GlassGenius]

I learnt a lot from your video. Thank you. Regards from Wellington, New Zealand.

[@andrextr]

Thanks Nicholas :)

[@Vlapstone]

Great!!! Finally a great explanation.

[@andrextr]

Thanks ! :)

[@leeshepherd7197]

Thanks good easy explanation will set my rear rebound now

[@TrIpMo1981]

Andre I subscribed when I finished watching. This is the best video on youtube for setting up your rebound. I wish I could give you more likes!

[@andrextr]

Thanks my friend 👍👍

[@ivanmoreli9321]

Obrigado portuga!!!! Me arrebentei na trilha por ter rebound incorreto!

[@andrextr]

Eheheh muito bom :)

[@jimmco46able]

Wow that is a clear and easy explanation to set up the rear susp. thanks a lot !! Muchas gracias !!!

[@andrextr]

De nada! Un saludo :)

[@garrettlandon]

Well done! Thank you for the easy to understand explaination!

[@andrextr]

Thank you Garret :)

[@MrGusty101]

dude, your videos are amazing! keep it up!

[@bgeorgeashton]

Finally an explanation that I understand! Very well done!

[@davewalsh8278]

Very well explained, thanks

[@ColinBarling]

Best Way I Have Seen So Far How To Adjust My Rear Shock Cheers Heaps Mate Legend. My Bike Feels Way Better Since Following Your Video. A BIG THUMBS UP.

[@andrextr]

Thanks Colin!

[@ColinBarling]

Your Welcome I Do Mixed Kinds Of Riding And It Fills Way Better Then It Ever Did Well Worth It Watching This Video Well Made Mate.

[@johnpettinger]

Really great video!! Best explanation I've found. Thank you. Keep up the great work.

[@andrextr]

+John Pettinger thank you John!

[@neil8288]

Great video...I am going to see how close I guessed the rebound on my Pivot 5.7 rear suspension as I had no idea how to adjust it

[@jeffbeck1100]

Great stuff.Its always been a grey area for me.Can't wait to try out your method.Thanks.

[@caturindrasukmana7673]

best rebound explanation video ever. Good job mate!!

[@cheewooi81]

Does the setting of air pressure affect the rebound setting? This is the best video so far I've seen on setting up shock and fork. At least it's more practical way of judging the critical rebound setting.

[@andrextr]

Yes, the greater the air pressure, the more rebound damping you need to slow down the spring extension. Bye and thanks :)

[@andriy_moskalyk]

Thanks a lot for extra clear explanation of how to setup rebound. The only question I have, what about high speed rebound setup, how to set it up? Can u make a video about that.

[@0ntoowheels]

Love you videos! Clear and concise explanations!

[@GMC1004]

Crystal clear, thank you very much!!!

[@hfe1833]

laymans termn explaination and technical, very good

[@hyw079]

You really broke it down for me. Thanks!

[@dariusdamonte4685]

Andre, why do you do the curb test sitting down? I just found my critical dampening and reduced HSR and LSR two clicks counter clockwise on my X2. It was perfect. Then I reduced them one more click and had too many oscillations, however, I noticed that when I did the curb test in an "attack position" and the rebound was spot on. You make great videos, I have watched many of the several times and have told all my riding buddies to check you out. Thanks Andre.

[@andrextr]

Hi. I suggest seated mostly because to eliminate the interference from your legs acting as suspension, so it makes more consistent. Also because most of the time on the bike for most riders is seated. But yes, you can do the way you prefer. This test is just a starting point for anyone to quickly setup any bike.

[@patrickfiore7067]

So appreciative for a fantastic explanation! Thanks man!

[@joakimwasseng8217]

Thanks, that was very useful and informative. Excellent!

[@scottjelleyman]

best explication ever. thank you

[@stevenmcnally108]

thanks it helped me when I go on rocky terrain

[@PhBenz]

Very useful and easy way to setup rebound. Than you very much. Could you please make the video about suspension forks?

[@andrextr]

Do you mean about the Rebound in the fork? I addressed that on the final part of the video. There is no easy method to tune the rebound of the fork (in opposition to the curb method in the shock). You need to tune it by "feelings", which is not very scientific, but the good part is that the fork rebound has more room to play and to error (it's not so critical as the shock rebound). However, as I said at the end of the video, I suggest you to bounce on top of the bike and find a rebound speed at the fork that matches with the rear shock, or even a bit faster. The bike has to feel balanced between front and rear. Bye :)

[@jasonkirksmith2963]

Great video. Very helpful

[@Zmack3d]

Very helpful, thank you for taking the time to assembly this video ;).

[@lsoliscr]

The best explanation! Thanks a lot!

[@castrokid1]

Muito Bom, Obrigado André pela bela explicação e video.

[@cryalowicki]

First off, your explanation on how to set rebound damping for the shock is the best and most logical I've come across. Bravo! But can you explain setting fork rebound in a little more detail? You say it should be faster than the shock, but are there any metrics on how to decide how much faster? Is bracketing the best way to find the correct rebound? I find bracketing to be extremely time consuming and difficult to accomplish correctly. It might be the best way for pro riders with factory suspension support but not realistic for the average or even above average rider.

[@andrextr]

+Cory Yalowicki Thank you! Unfortunatly there is no "scientific" or quantitative method to tune fork rebound. However, fork rebound is less important than rear shock rebound, so you have a wider usable range. The way I tune is to pump on top of the bike, and find a fork rebound setting that is at least as fast as the rear wheel. Your front and rear rebound must feel balanced. When pumping the bike if you feel the rear shock rebounding faster than the fork you need to increase fork rebound speed. Sorry, this is the best I can explain... You have to try and test :) But don't worry too much with fork rebound, just leave it a bit faster than rear wheel. :) Bye

[@cryalowicki]

+andrextr Thanks for the quick response! I'm resetting rear shock rebound on all my bikes as we speak :)

[@andrextr]

Eheh nice :) Stay tuned for the next episode. I will show you an awesome and inexpensive method for free suspension data acquisition and I will apply that to analyse rebound & curb test, flat landings and pedal bob... :)

[@DarkpowderUK]

Great video, thanks. You have a comprehensive way of presenting this information, while still keeping it simple to understand. One question for anyone here. "Clicks-out" as described on bike setup vendor pages as a "starting point". How come Fox and Rockshox seem to have a different explanation of each. Is it always "clicks-out" from fully open (fully-anticlockwise) or clicks out from fully closed (clockwise). I assue the first, though there is a discrepancy online as to the difference with these two vendors.

[@andrextr]

Suspension vendors don't have clicks recommendations for shocks, they only have for forks. That's because the shock setting will depend on the leverage ratio of a particular frame. Usually only the frame/bike vendor has that clicks recommendations for the shock (on the bike manual). Anyway, if you are confused just remember that heavier riders need more rebound damping due to the higher spring rate (they need more clicks towards the slow rebound). So, if the clicks number increase along rider's weight then they are counting them from the fastest position. Bye

[@DarkpowderUK]

Thanks andrextr for taking the time to reply. Your answer confirms this detail from a manufacturers website. Here i imput two weight figures, 80KG and 110KG as an example. 110KG - 99PSI 1 click out - Fox Performance 36 TALAS FIT4. 110KG - 290PSI 2 clicks out - RockShox Monarch Plus RC3 DebonAir. 80KG - 71PSI - 6 clicks out Fox Performance 36 TALAS FIT4. 80KG - 220 PSI - 3 clicks out - RockShox Monarch Plus RC3 DebonAir.

[@andrextr]

+DarkpowderUK In that case they are both starting from the slowest rebound (highest damping ++). Anyway with the video's method you can set up correctly the rebound for any shock for any bike for any base tune, without memorizing the numbers of clicks... Bye

[@shustypl]

best explanation I've seen, thanks!

[@MilkBone3327]

👍🏼, great explanation, I understood. Haha. I would assume plus size tires with varying tire pressures would wreak havoc on finding the right setting.

[@LazyGrayF0x]

Excellent explanation, thanks a million!

[@sinbad656]

What settings would you do this in firm, medium or open??

[@andrextr]

sinbad656 use in open mode to isolate more the rebound circuit and minimize the compression influence

[@clownpnd]

Thnx, awesome explanation!

[@frederikroark]

Thanks mate, this was very helpful!

[@strongme80]

The curb test along with a smartphone's these days (2021) with slow motion will guarantee the capture of the critical rebound point on the dot!

[@kim00gibson]

Thanks for the video. This is the best video about setting rebound in the rear shock. Should I use the same method for the front suspension?

[@andrextr]

At the end of the video I spoke a bit about the front suspension. It's a more "feeling" method. But the rebound of the front suspension is not so critical, you have more room to play. Bye

[@happyfisto4930]

Thanks for this man!

[@toniniemi9961]

YOU ARE THE BEST THANK YOU SO MUCH!!!

[@andrextr]

Toni Niemi Thanks Toni. Have fun.

[@jungjoonchoi3744]

very good explanations by text.

[@jandemont7091]

Great explanation!

[@drifterxl12]

thanks! perfect explanation

[@benchiswell2635]

Well done Andre

[@unnmaed]

thank you very much

[@H22EKHATCH]

Andre. Do you have a similar method for the front fork? This worked phenomenally!!

[@andrextr]

+Jon Cannella Yes, check the final part of the video where I covered the fork adjustment

[@H22EKHATCH]

Sorry, I missed that..... thanks so much!

[@Kenevoslcomp777]

Can you do a video how to set up preload on a coil shock

[@andrextr]

I already have a vídeo about that. Short answer is never preload your coil (only 2 turns max to hold spring). If SAG is not the desired one then change spring

[@ethananderson8849]

good video, very helpful

[@RafaLauris]

A Melhor explicação! 👏👏👏

[@osborn9504]

Excellent video!

[@SunsPSD1]

Dig your videos! Thanks.

[@c0rky0001]

After X videos, some explained it properly

[@ragged9242]

any videos on fork rebound ?

[@Whitehawkvisionfilms]

Why do you lose stability if your shock is setup to keep the wheels on the ground for traction? Seems like this means you are in contact with the ground and your frame is gliding along without bouncing off the ground so the frame is on a smooth/straight trajectory... did I miss something? FYI I very much like how you explained much of this... I am just not tracking on the lose stability because your wheels are in constant contact with the ground part... Thanks!

[@andrextr]

Hi! The answer relies in the concept of transmissibility. Fast rebound isolates better high frequency bumps but it amplifies lower frequency bumps/oscillations causing a more bouncy ride (pogo stick). I cover this topic in detail (with video animations) on this newer video: kzbin.info/www/bejne/sKnVeqyYj92Ai6M.

[@Disected]

although english is not your firat language, you explained it better then english speakers.

[@andrextr]

+Supa Creepa eheh thank you man! I try to do my best :) Bye

[@kellykingi5546]

Hi Andre should all the HSC LSC and LSR be open when starting this test?

[@ciechantrial]

Very cool series! Are you going to review high and low compression settings as well?

[@andrextr]

+Konrad Ciechanowski Hi! Thank you. Yes, I'm planing more 10 videos to do in the next months :D In the next days I will show you a FREE & EASY method for real suspension data acquisition. Awesome stuff IMO! :D Bye :)

[@sstrain874]

Very happy I found your channel, this is very interesting. Could you do a similar video with front and rear suspension with fast and slow rebound and compression damping?

[@andrextr]

+Stephen Strain Hi Stephen! What shock do you have? I already gave some tips to Jean Carlo Lengua Villar in the comments about LSR and HSR. Check it out :) If you have questions feel free to ask. We can discuss better.

[@SaFteiNZz]

can you make this video for high and low rebound and compression dampers?

[@rushcentrale]

Worked for me. Thanks!

[@andrextr]

+Mark C1 Great!

[@gagoebel]

Great Videos! Not sure if you covered this, but is there a certain order you should go in when tuning your shock? For example, (with sag set and all shock adjustments set to fully open) do you start with say LSR first and work your way through the adjustments one by one? I like your curb test technique, but were you doing this with the HSC/LSC already set or were they fully open?

[@andrextr]

+George A. Goebel Jr. I covered the HSR/LSR on EP.7 minute 9. The order of adjustment would be SAG, rebound and finally compression. Bye

[@gagoebel]

andrextr Yes I've watched that video already. this doesnt answer my question. Let me rephrase: Forget about LSR/HSR. I'll just refer to it simply as "rebound" . my question was, when adjusting rebound using the curb test, should you do this with the compression fully open? Or should you have the compression dialed in first, then do the curb test? does one affect the other?

[@עמיתיפרח-ה5ס]

thanks, it really helped!

[@pawild5594]

at the end of the video you drop a white bike and it bounces, then you drop a green bike and it does not bounce. what is the difference in the setup and which is preferred?

[@andrextr]

+Flemingtb that was a Joke since the white bike is an hardtail, so it bounces on the drop test because it doesnt have a shock to absorb the impact. I have a vídeo named "drop test" between 2 FS bikes with more info. The bouncing is not due to rebound speed, is due to the lack of sensitivity of the shock. Bye

[@samuel-JF1981]

EXCELENTE vídeo André! haveria a possibilidade de produzir alguns vídeos em nossa língua? informação com a qualidade disponibilizada por vc é rara, e em português é praticamente inexistente! um forte abraço daqui do Brasil!

[@andrextr]

Obrigado Samuel. Este video por acaso tem legendas, é so clicar no botão do canto inferior direito. Nem todos os videos têm legendes (dão algum trabalho a fazer). Abraço :)

[@samuel-JF1981]

+andrextr, eu até tenho uma boa fluência na língua inglesa, descobri a legenda depois, hehehe! Abraço!

[@pbillings808]

Why set to critical damped for seated weight when traction and jump dynamics occur with "attack position" weight (when centered over the BB)?

[@danieldunne900]

when turning rebound up to fastest before doing the curb test, is that both high speed and low speed rebound if you have both dials or is it just one? i will try doing both at the same time and check bath with results

[@andreipulosul1492]

But what if I perform the rebound test correctly while seated,but when riding on a downhill trail I never stay seated,would that make the rebound setting that I chose irrelevant?

[@andrextr]

+Castrav Eleuterius You can do it while standing, there is no much difference on the result (since the weight distribution is quite similar), however I find it easier to do it seated (because you eliminate the contribution of body movement and the legs which also absorb and dampen some of the impact). So that's why I prefer seated, to isolate the suspension only. But it's OK to do standing, just try to remain stiff on the legs. Bye :)

[@andreipulosul1492]

andrextr Wow really fast reply thank you,great useful videos by the way

[@rologti]

Hello! The critical point is where you dont have rebound in the carb test, depending on the trail max 2 clicks faster, not slower...for pedaling uphill the critical point is the best. Is there any situation in your opinion that it would be recommended to go 1 or 2 clicks slower? Great video Andre!!!!

[@andrextr]

+rologti The critical rebound is when the shock rebounds the fast as possible without any oscillations in the curb test. This will be your base rebound tune (there is no advantage to go slower from this point). Now, from this base point you can increase the rebound speed by a few clicks according to your preference. In the critical rebound the bike is very stable and don't bob much. If you increase the speed a bit (like 2 clicks) you lose a bit stability but increase the liveliness of suspension. Much faster than this the bike becames unstable (pogo stick). Bye

[@rologti]

andrextr Thanks!!!!

[@fabiopessoa9312]

obrigado por explicares de forma tao simples!!

[@andrextr]

Obrigado Fabio! 👍

[@1christophe1]

Thanks mate great info keep it up

[@themechanic8195]

Thank you, now it makes sense. Goodbye pogo stick

[@pitduck7499]

nicely explained

[@andrextr]

+pit duck Thanks! Stay tuned for a new video next week. Bye

[@useport80]

hey andrextr, i just got a new 2018 fox float x2, it has LSR, HSR, HSC, and LSC control dials. can you do a video on how best to tune it? i'm 185lbs fully geared. thanks in advance!

[@andrextr]

Here you have some advice for LSR HSR LSC HSC tuning tips: kzbin.info/www/bejne/j5vUnWShet2peac

[@kevinslane1527]

I am wondering why rolling off a curb at walking speed is the best method? This does not seem to imitate anything like my normal riding. Is it just coincidence that this works or is there a reason?

[@andrextr]

There is a reason. By doing in this way you are dealing with just one bump without any other interferences. So it's easier and much simpler to tune and find a good damping ratio. After doing this, you will find your bike much stable and with less bouncing under pedaling on the trail. After getting the critical rebound, you can put +1 or +2 clicks (towards faster) to get a more active and confortable feeling. Much more than that you will end up with a bouncy and unstable ride. More info here: kzbin.info/www/bejne/sKnVeqyYj92Ai6M

[@stevenplus3]

Thank you!

[@markaguirre9035]

Which rebound are you referring to? High Speed or Low Speed Rebound?

[@andrextr]

In this case it’s a single adjuster so its mostly low speed, but regardless of the rebound adjuster at the end of the day it’s always good to check for excessive oscillations in the test

[@thiagobartolo]

Obrigado pela explicação, numa bicicleta de rabo duro o ajuste de rebound é totalmente livre ou posso usar algum critério para ter a regulagem mais adequada?

[@andrextr]

+Thiago SB Suponho que estejas a referir-te à suspensão da frente, visto que numa hardtail "rabo duro" não há amortecedor traseiro.... O rebound da suspensão da frente não é tão importante como o amortecedor de trás mas convém ter o rebound relativamente rápido à frente, mas não excessivamente rápido (senão tens um efeito mola / fisga / coice). Usa parecido ao que eu tenho no video (minuto 10:30). É dificil de explicar por palavras uma vez que para a suspensão da frente tem de ser afinado através de "sensações"... Para o amortecedor tens o teste do passeio que é um teste exacto e facil de entender (nao há cá sensações e tretas). Abraço.

[@rreisgomes]

Great video If you have both low and high speed rebounds and follow this method, I presume you will be setting up only low speed?

[@hfedrums123]

I wanna know this too

[@sanz919]

Andre, is there a similar test to set rebound damping on the fork? Or do you just do it by feel? Thanks.

[@andrextr]

By feeling. Bounce on top of the bike and set fork slightly faster than rear. Both suspensions should feel balanced. I've talked about that at the ending of this video. This provides a good starting point for a stable and balanced ride. Cheers

[@sanz919]

Thanks man, pays to watch to the end eh! Love your channel.

[@benny360]

Thanks for the video! Very informative! I have a Canecreek Inline shock, with both LSR and HSR. Which one will I be adjusting for this video?

[@andrextr]

Hi. In normal shocks the rebound knob affects mainly the LSR circuit but also affect the HSR. In your case you have independent adjustment of each one. Check my Ep.7 video where I talked about the rebound on those shocks. At the end of the day, you should get only a tiny oscillation during the curb test. Bye