MTB Shock Tech | Everything You Need To Know About Mountain Bike Rear Suspension
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- Опубліковано 15 лип 2024
- Mountain suspension can be quite confusing! In this video, we take a detailed look at everything that makes a mountain bike shock. We explain the basics, such as coil or air-sprung. But also nerd out things such as shim stacks, high and low-speed rebound damping, volume spacers (often branded as 'tokens') and even explain what IFP stands for, and what exactly it does! 🤓🤘
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Is there an even more basic video on this. Maybe disassembling a shock and talking about how each part functions would help explain it all better. Animations are helpful as well.
This, the video was so Greek for me but I think I could understand it better with animations.
Check out skills with Phil suspension video
I'd watch you talk for hours and hours about suspension!!!
Dude sameee
I'd pay good money for sleep-story style audio book about suspension narrated by Henry lol
I love those videos where Henry is talking a little nerdy about tech stuff, like the real time fork service. Please continue making these videos!
So much research and engineering. Quite an art form.🦘
@@oldstockrobert3814 yes sir it does... it is a relevant impression.. I would like to see however the two concepts aligned to create moonrockshox.... now THAT would be impressive.. imagine the reverse engineering going into that! A shock that has the ability to absorb anti gravity. The research trips alone would be a project in itself.. what with the need for first creati g an atmosphere... I'd put up a hand for test pilot..
Why 🦘?
@@beny6920 are you asking a question? or are you illuding to a theory? I'm just asking as I am unsure.
Well that made absolutely no sense whatsoever 🤣😂 I am willing to learn everything you can teach, so if you do want to do longer videos breaking down each topic, I'm all ears. It fascinates me 😊
Ty for the video! I´m just getting back into the matter, just got myself a new bike and your tech videos are always a good opportunity to reflect my own antiquated knowledge (wtf im only 37) in order to fill up the gaps. I find it essential to exactly know how my own equipment is working. Commenting on your videos is like talking in a support group: Yeah my name is .... and I admit i love geeking out on mtb tech...
I'm in exactly the same boat mate at 38 I've just recently returned to the sport after about 10 years. Oh how things have changed. So much to catch up on. gmbn and gmbn tech are brilliant.
@Henry, one thing to note is that the addition of a negative spring helps overcome the preload in a positive air system. It is not to overcome stiction as you mentioned.
Thanks for the vid.i was litrly debating wether I should get a cool shock or air and this vid helped a lot
One of your best videos. Sadly we don't get to go beyond the basics. Please make an advanced one as well, if you have hours and hours of material still! Good job. something I think a lot of people would watch is a good video of damper service on a rear shock with an ifp.
Vorsprung has a UA-cam channel with heaps of info.
@@yakbiker75 yep, but none of them explains in a good way how to service ifps. If I'm wrong please refer me to it, I'd love to watch.
@@TeamCykelhold ua-cam.com/video/Y2j44dZ_JaY/v-deo.html for fox X2
@@yakbiker75 thanks!
can u do a video on how to select and fit the rear in different frames, and compare different models on the frames. Do an actual demonstration
Did anyone notice the Jack Daniels bottle in the background?😂 With 'Jack' torn off
jack in focus, presenter and shocks out of focus
Great video with very good technical explanations, figures and real cut-off views. Could you explain in a video the different rear suspension geometries and above all the difference between suspension systems mounting the rear shock vertically and horizontally/diagonally please? Keep on doing such a good job! Regards.
10:08 that was a violent 'trek'
Thats because their bikes are horrifying
Thank you for your video, made everything super clear!
Interesting point about coil shocks lacking stiffness inherently. I hadn’t considered that, thank you
Great video, given a noob like me a bit more understanding what i need to do to fine tune my cane creek coil shock. Thanks.
Awesome video and very informative. Great job to the fellas @ GMBN 👍🏼
Very clearly explained and nice content. I watched it even though I know how shocks work, still entertaining👍
Thanks, really interesting to learn the ins and outs of shocks 😃
Great video once again Henry :-)
Yes, a longer video about this subject please.
Best shock explaining video ever!
Great info, big thanks
Great video thanks Henry👍
New to mountain biking, this was awesome, could you do this for like... everything bike related? 😅
Liked before watching, cause I know its gonna be good.
Excellent video Henry. You are missed on GMBN tech!
Me too!
Good Job Henry!!
Telephone analogy for the shims is very good. Keep up the good work.
Very nice video guys!
thanks great upload
Great video Henry
You can use 2 rubber bands on the shock: after full compression, the first band will indicate your max travel and the second band will show your sag.
Wouldn't *both* rubber bands have been pushed down to max travel then?!
@@geemail369 you move one back and repeat the the sag measurement
Really interesting stuff Henry! A complex topic. I love all the tech that goes into our bikes, it's an exciting time to be a mountain biker
One thing with the negative air chamber. They can't produce more than a vacuum to counterbalance. So roughly 14.5 PSI.
The negative chamber isn't under a vacuum, it's just opposing the positive chamber but they're both under positive pressure. You can customize the negative chamber in some forks and it's usually around 20-80psi. A vacuum would actually have the opposite effect and make it even more stiff, it would be like adding to the positive chamber.
Tjakepzzz... Sangatzzz...
Very... Nice...
I have a question about my specialized enduro comp 2020. I'm looking at swapping my rear shock from the select + to an ultimate but I can't find a shock that has the stanchion eyelid the right way. So can you just release the pressure and turn it?
very nice)
What does switching from Imperial to Metric have to do with bushing overlap and stiffness??
I run an ohlins rear shock but it keeps bottom out and loosing air. My question is what are the ideal personal weights for rear shock, would a larger rider like me 110kg benefit from a coil or spacers in my rear shock cheers
Retitle this "How to Over-Complicate Things and Talk Nonsense In the Most Ineffective Way"
What happen if i use a 190mmx 50mm rear shock to my stumpy the size is 190x 42.5 mm the stock rearshock on my stumpjumper alloy.
#askgmbntech i recently crashed my bike and there was a real bad scratch on my brake lever, what should i do to prevent further damage?
It would be good if you went 1 step further and show how to step up out on the dirt and how to fix some bad handling problems
Shocking!
#askgmbn whats the differece between the SRAM Butter, the dynamic Seal Grease and the PM600 and what should i use for my Revelation RC (2019)and Monarch Deluxe ? Or is the sus Grease from "Dynamic " Just fine ?
Hi! Thanks for the explainer!
Will it damage the rear shock if you invert its position? TIA
13:07 VVC doesnt preload the shims, it changes the mechanical advantage of the shim when pressing on the leaf spring
Cato Hobsbawn oxymoron, you’ve explained the same thing in two different ways
@@clarkie005 late reply, but actually that's incorrect. Preload increases the amount of force it takes for the spring to start moving, whereas vvc effectively changes the springrate, meaning the force graph will be steeper. If you know linear equations, it's essentially the difference between the y intercept (preload) and the gradient (springrate). Vvc changes the springrate, not preload.
#askgmbntech I was wondering what you guys think of drilling holes in your frame for bottle cage mounts. I have a 2012 transition blindside and want to put bottle cage mounts on the downtube using rivnuts. Thanks, Liam
I can speak for them, they will say it’s a terrible idea, it can weaken your frame quite a lot. It will also void your warranty, I don’t think your bike being from 2012 will have it though. There are people who have done it but it’s advised not be done but you could try it if you want but doddy has said many times not to drill holes in your frame.
I am having a lot of problems with my older coil shock.
love how you had to take off the jack daniels label ;) I see what you did there
#askgmbntech. I have a 2018 nukeproof mega 290 comp and it has a rockshox super deluxe rear shock. For the last month my shock has been losing air as my ride goes on. I am forced to bring a shock pump with me and pump it up at least twice in a ride. I have replaced all the internal seals and it is still losing air. Do u know what is wrong
This information is still confusing to me can you do a video that is more simplistic please thank you this is way over my head
The "architecture" portion of this video, starting at 9:00, was the most helpful section. I suggest re-making the video by putting the architecture section first, then the rest of the vocabulary explanation I think would make more sense.
What if i use a slightly larger eye to eye? My shock is 190x 51 and ive found a good deal on a 215 shock will it work?
It will be too long and will either not fit into your frame or it will put a lot of stress on the frame which could lead to failure
I'll listen to more
I would watch
That was more complicated than my A-level physics exam
Some of this stuff shocked me
'shockingly' good, as always H. Thorough, yet clear and understandable, and v interesting.
Aren't IFP nitrogen charged, rather than air?
Yeah, AIR. Can be Nitrogen or O2 vs what he said; coil. Check out 10:56 graphics showing Nitrogen...
Normal atmospheric air is 78% nitrogen and 20% oxygen. And the molecules of N2 are only 2.6% bigger than O2. So there’s not that much difference using N2 over air as only 1/5th of the air in air isn’t N2 and that 1/5th is only marginally different in terms of size and mass.
9:52 ?? confusion in explanation there. May i try, it's not the piston that push oil in the expansion chamber, this displacement is the result from the volume of the rod that enter in the piston sleeve chamber. english not my langage so please appologize. thx
What rear shock do you use and how do you like to have your suspension set up? Let us know 👇
Rockshox micro brain
How to fix suck / stuck down air rear shock? :(
Yo guys, question here:
Yesterday I found out the set screw that keeps the rebound knob on my new fork (RS Pike) went missing. Probably wasn't tightened properly at the factory. Miraculously I didn't lose the rebound knob itself, so I pulled it off to make sure I don't lose it.
Will I risk damaging my new fork if I ride without this knob in place? (until I get it fixed ofcourse) The hole where it plugs into is kind of exposed at the bottom.
Find a similar screw. It doesn’t have to be a set screw, any screw with the same threading should work. It just won’t look as clean
In regards to shocks. Why is it normally recommended to run slightly more sag on a progressive frame than a linear one? Why not the opposite as 30% sag at the shock is far more on the wheel travel. Why don’t set the bikes up with a percentage of wheel travel rather than stroke length? #askgmbn @gmbntech
This info was truly *shocking*
Bikes that the frame design puts crazy side load on the shock body/shaft:
* Pivot Phoenix 27.5 has entered the chat *
(will snap coil DH shocks)
What happens if you use the right eye to eye but a longer stroke length?
In good situation, you get more travel and no problems. Will affect your geometry though and might have issues with chain length and tension.
You get more travel on the rear and your wheel/hardware will possebly hit and damage your frame. Contrary to what the other guy says (false) it won't actually affect geo (because same eye to eye) except when using more travel than previously possible.
@@TeamCykelhold It will effect geo when at full travel.
Thanks!
@@Pienimusta only by allowing more travel, which is the whole point, and as I write only at more travel than previously allowed. So as a whole I would say that geo is not affected as long as eye to eye remains the same. Different eye to eye however would on fact change geo.
Shock bearing mounts is the most potent snake oil i've seen in a while
Hi
If anything this has made me more confused 😕
this video is shocking! o.o
Hello
Hi
you could edit this into a pretty interesting 18+ video lol
I would definitely watch for hours and hours.
I don't understand most of the videos because on a my first bike, ht. 😂 But watch it anyway. Maybe In a few years, if upgrade to expensive front fork or fullsus this would be useful.
Good videos though.
Still i dont know exactly what the IFP is for.
Right then ,it’s a hard tail for me 😩
What is Nude technology ? what is trunion ?
Interesting stuff but I was asleep a few minutes in with the mono tone
This was shocking
holy fuck, ill stick with a hardtail lol
No issues with assembly for me ua-cam.com/users/postUgkxHL1v1R3NE5x4KiYfyt8dnQmyNYz7qi5L but I could see where some might benefit from using an experienced bike assembler/mechanic. I'm an older rider starting back after a 10 year break. This bike exceeds my capabilities and has been easy to get comfortable riding. I'm mostly on easy trails with almost no street riding and have not been disappointed with the performance of the bike. My fitness level is far below what I previously rode with and because of that the mileage is going on the bike slowly. While I'm losing weight slowly, the bike seems to tolerate my 220 pounds just fine. The bike has been used by several family members ranging from 5'5" - 5'9".
This guy should read audio books on UA-cam
Yeet
Handyman
Jesus, this is more complicated than chess.
1 day i will have an double suspension bike................An GT Sensor or Specialized Chamber old for $1K,800-900$.......................................One day
Eventually someone will invent simple suspension that don't cost £1000.
Didn't need the vid. It's just so simple they go squish squish duhhh.
You lost me at stroke length of the shaft.. got no idea what you're talking about.
The 2 plants in the green pots need a drop of water and some feed
Like the new #GMBNTech guy Henry in the learning of thes suspension of chocks floats thes diferents series in the #GMBN depending of thes taips of hubliys #Moutainbiking bike's thes tapers and pistons coils oils yuors positions in the geometry 🗣️yyaasickejnoy. Saluds of chile 🇨🇱🤘😀🤘🚵🚴.
This is too much and too fast.
Very confusing imo.
'Bushing overlap'?
Most sliding systems use two bushings: one at the top, and one at the bottom. Bushing overlap is the distance between these two bushings. More distance (and overlap) equals a stronger and stiffer system.
Background music very distracting. But your producers must think it's really cool. I don't.
What a shocking video
Tristan Tate
No thanks to a Poo Shock. Sounds smelly!!
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