Best explanation on how shocks work. Seeing the insides at work made all the difference. Good one🤟

I watched dozens of fork maintenance videos before taking mine apart, none of them mentioned that there is a type that has only springs in both sides.

Apart from the damper being upside down like everyone else pointed out, it's worth mentioning that the bottomless tokens are installed ABOVE the upper seal, not below. Like in the damper stanchion, the chamber above is connected to the main spring chamber by channels. That's why the tokens are only limiting the air volume without changing the actual travel of the fork.

You had your damper cylinder upside down. The compression adjustment is on the top. That is why that giant air bubble was mixing with the oil. That actually hurts damping performance. If the cylinder was the right way up, the air would have been above the compression piston, and the air would not mix with the oil.

Best explanation I have seen so far on the fork mechanics and dynamics. Thanks!

hey, i'm brazilian and i really aprecciate this video, bcz here in youtube brazil, there isn't videos explaining how this type of suspensions works. Thank you boy, success to you!

love your channel man, always giving a deeper understanding of the mechanics behind our ride.

what the fork

Really good explanation. It has been difficult for me to find that kind of video. And really clear even for a spanish talker like me. Now I can clearly understand how does the fork work.

Hello there. Great video! Thank you for taking the time to make it. Where did you get the props?

yo u totally nailed it...been looking for clarity on compression dampening for ages ...thanx

your explanation answers all my questions, thank

Best explanation of suspension forks ever. On my shopping list.

Excellent video 👍👌👏!! Thank you! Im returning to serious MTBing after 20 years away... hahaha the last suspension I saw the inside of was the 1998 base model Rock Shocks (was it a Judy? ...me thinks yes!) They were toys back then...plastic air springs both sides...this is completely different. This is easily as sophisticated as the Ohlins motocross suspension I used to use on my dirtbikes. Now I understand the cost, and see the value...even if other companies have different methods to achieve the same things those things are really being addressed (Hi/Low speed compression and rebound dampening) My hope was to see this level of sophistication and I am not disappointed. thanks again

Grrrreat tutorial! Finally someone who took the job really seriously and got us, forknerds from oblivious bumping over trees to scientifically supported cruising through the woods :D Love the dummies!

Thanks Dude, Now I understand. Made adjustments. Will do again on the trail.

Learned so much! Much easier to understand when you can see what's going on in your fork. Thank you for making the video and explaining🙏

Super helpful and really interesting, thanks for putting this out there!

Very clear explanation! Very interesting

Thank you for your explanation. It's so easy to understand!! Super helpful

Great video and lighting quality, audio quality, and English 👍 overall very helpful and professional

Amazing explanation. Just what I wanted to see. Thanks!

Just blown away, best suspension explanation I've ever seen

Nicely done!

Excellent Explanation Bro

Great video! Clear explanation!

I think you had the rebound upside down

Thank you for this lesson i don't really know whats inside or the operation of Lock out fork even to adjust..now i know !😁💪 thanks!

being an engineer, i always think how we take things for granted never thought how it actually works , good job #SickBiker

Brilliant explanation. Worth the time.

Also makes a good case for the latest damper designs from Fox and Rock Shox using bladders or sealed chambers separating the oil from the air and preventing the foaming or "cavitation" which may lead to unpredictable dampening characteristics.

Thank you for your explanation. It's so easy to understand!!

great video! very informative, do you have a video about repairing hydraulic lockouts?

Greetings from the UK, and thank you for this superb explanation.

Good day! Is that demo cartridges? They are transparent and thats looks cool!

Thank you very much I finally understood how forks and its functions work! 😁

Hi, thank you for this well done and very informative video. I'm struggling with a strange problem with my hydraulic (manitou) fork. Lock out function suddenly stopped working, I disassembled it and I found that the plunger have some existing-through-holes in it (that cant be closed by the handle bar command), besides the locking valve that should do the trick. I don't understand how it could ever lock the fork while some holes are always open. Any clue about the principle of whole thing? Thanx

This is a good video, many thanks

Very good video. I'm wondering how forks and shocks can have different rebound and compression adjustments for high and low speed.

Great video, perfect explanation! Thank you !

This video makes me want to take apart my SiD and clean everything.

great :D will you make a Manitou video?

Excellent content. Thanks m8 !

Can you make a video on Cannondale DL50 Headshok by any chance? such as 'How it's constructed, how the shock works and how to service it on a regular basis' and etc. Thanks!

Thanks man! English is not my first language but I still understood everything.

Very well explained - thank you!

So kind explanation!! Many thanks!!

Can you make video on how to disassemble and rebuild step by step on manitou markhor fork.

Great video!

Great explanation!

Very useful anyway!! But...for exapmple. I have a problem on my Fox talas 2009 (that has open bath system) and suddenly it starts to compress till the end only with my weight (and spread oil from the damper side). The air pressure in the right side is constant, it doesn't lose air. I'm wondering where could it be the issue ... i still had a good quantity of oil on the damper side bath when i opened it (lockout anyway doesn't work at all). I don't think that changing the dust seals would make any difference about it (or am I wrong?).

Pretty straight forward analogy for explaining bike suspension from rider's perspective and good job for the demonstration of suspension parts! However, there are some points need corrections or better explanation to not misleading non-suspension enthusiast viewers. 6:16 That is the upper part where the compression or lock-out knob located (at your hand reach when you ride). 10:29 I think you wanted to refer to the dimple on the wall of air-spring cylinder tube which has main job is to balance the pressure between positive and negative chamber. Some forks will need a bit of cycling the fork to equalise the pressure, but some new forks nowadays may not need to. Some claim that having dimple at zero travel can affect small bump sensitivity... 11:03 The polymer spacer (Topout bumper) in the negative spring chamber is supposed to work as cushion when fork fully extended. (I'm not sure if this scenario is called 'off the top'?...please correct me if I'm wrong) For bottom-out cushioning, some forks has polymer spacer in lower leg to take the hit from stanchion, some cheap coil spring forks has polymer rod in the positive spring chamber to do that task.

Nice video! One Question can you exchange the fork damper oil without removing the lowers? Or will some oil remain at the bottom under the sliding seal so you don't know how much you need to put back in?

I’m an Indian boy. I liked your video too much. You did a great explanation about this topic. I truly liked your video. It’s very helpful to me

Awesome video! But i have a question, how does the Cannondale 1 fork bike works ? 😆

Das beste Erklär- Video zum Thema Gabel i've ever seen!!! 😅🤘🏻👍🏻👌🏻💪🏻

Dang. A very good explanation

As some folks has said, you explain the rebound side upside down, the compresion knob is the upper one, and the rebound knob is lower one, near the drops

Nice explanation how suspension works

The best explanation i0ve found. Thanx :D I guess the rear suspension's are the same... Air & coil. it would be great to have thos models with transparent cases to view the inside of the forks and the rear shocks :D

Thank you so much for the lesson You're genius🖤

How does altering the travel of a shock effect things. I have a suntour raidon 32 lor-ds that I'm thinking of increasing from 120 - 130. My thinking, more air in the chamber softer compression for same amount of PSI, correct?

Hello! my RST first fork are a bit hard, Can you guide me how to adjust the rebund?

Your videos is informative sir.. gives me a lot of info..

Do you have any ideas about KASTLE HDB suspension fork? Please kindly reply me

Hey hey! Greate video! But unfortunatly you've got a mistake! You should turn up side down reboutdamper. It could be shown correct work of it.

This was so amazing for me to watch and learn from! I had no idea that each of the front forks do different things! Engineering is so awesome! I live in india, i am 44 years old, im new to current MTB tech although ive been oggling all these youtube videos for years now. I used to cycle more than i walked during my schooling days. My bicycle was called the StreetCat RockNRoll ❤😂 The coolest bike available in the 90s in india 😅 Cool dad i have! I still havent ridden a 27.5. I stopped a stranger and rode his 29er recently, felt like i was riding a horse, so awkward!! 😂 I'm traveling to thailand and excitedly waiting to ride a cycle trail and hopefully pick up a frame and suspension and cranks to build a cycle cheaper than they sell in india. I ride agressive street, like climbing down stairs and wheelieing and well not stoppies anymore cuz im freakin 80kgs now (still very fit though). I guess my reason for rambling is im hoping to find hints and suggestions for minimum requirements for my dream cycle build. Okay, sorry for rambling! Thank u for this excellent video!

Thank you so much, great video, simply explained and i understood everything! Great job you got a new subscriber! :)

That is really useful for riders, thanks

Nice one, mate!

Great video ! i watched 25 videos and just didnt click. I watched yours ....Boom ! it all made sense! lol. thank you

Great explanation, thanks dude.

awesome vid, great props

Hi Sickbiker, I got a problem with my RST Aerial hydraulic compression lockout. It can be locked out, but cannot be locked out perfectly. When it is locked, the suspension is still travelling for about 30 mm. Could you tell me what happened actually to my fork? and what shall I do? Thank you in advance 🙂

That was Awesome!!

Hey I know this is an old video but do you know if you could stick a rebound cartridge like from a suntour XCR into a suntour XCM that only has rebound?

What is more advanced / prone to breaking? Hydro or mech lockout?

Hi , I've recently bought extra oxy replacement existing older ones. I want to evacuate the air and recharge or refill with nitrogen as it has many beneficial effects. Do you know if this is something I should do myself or if I could take it to the shop I'm having any difficulty finding one near me in Concord, NH does that does that work. Unless there was someone you can recommend.

Very nice. Well explained. Thank you Sir.

from where you bought this plastic tube ( your special tools in this video ) ?

Great video. No one seems to cover suspension oil weight, tho.

where i can find dust seals and foam rings for rst forks?

Thanks man! Very clearly described.

Great video and explanations. What I still don't understand is how the lockout works and I can't find anything on the net.

Great, i learned something from you sir. Thank you so much.

Very informative, great job 🤟

Thank you! Easy to understand, I get it now!

THX for your good explained!!!

great job!

hello does the tokens not hit the piston when bottoming out?

Great video, but it does not mention an important part - explaining how negative and positive chambers work and what are they used for :) It's a very interesting topic, and I guess DualAir shocks are really great, allow you more adjustments and less sag

Very good explaination

Damn, wish I had compression adjustment on the damper side. My fork came with pneumatic travel adjust, which is just insane, didn't know what it came with, it was just a good deal online. I asked about replacing the damper with a R2C2, but apparently I can't. Yeah, the pneumatic travel adjust is just nutters, but the fork was half the price. I would love to work designing bicycle suspension, I feel there's tons of great ideas you could implement.

Great video thank you

Good explanation And good english lesson for me

Gracias por tu clara explicación! Necesitaba entender como funciona para poder reparar.

Wich is better to use air fork or coil?

Springs that are made with a uniform thickness rod will have a linear characteristic. This tweaked to give a spring a progression characteristic changing the pitch of the coil wind and by heat treatment. The true progressive spring will be made by using a tapered rod, one where the rod is slightly thicker over the length of the rod coiled to make the spring too changing the pitch of the spring coil to a smaller pitch at the end where the ticker material is coiled will vary the spring compression progression depending where the pitch changes. If the pitch starts halfway through the spring and the pitch progressively decreases over the remaining length. The the spring will have a linear characteristic for the first half of the compression but will require greater force the more it is compresses beyond the halfway point.

s it possible for a 27.5 aerial fork using 2.75x2.50 tires?

This explanation answered my question why all fork's down-tube always connected