Video: 32 Bikes Bottomed Out In Ultra Slo Motion (1000 FPS)

Dec 24, 2021 at 8:05
by Pinkbike Originals  

127 Comments

  • 39 0
 DH BIKE FIELD TEST!!!!!!!
  • 5 0
 YES
  • 1 0
 Give the people what they want!
  • 11 0
 but please wait until the Forbidden DH is out
  • 37 1
 Here is the correct video:
youtu.be/XyAbIpOO0Zs
  • 27 0
 Intern handling PB Originals is fired.

Rhetti, you're hired. Here's your Outside+ subscription signing bonus.
  • 6 0
 Broken crankset on the Specialized Kenevo SL. Is it a PraxisWorks crankset in carbon?
  • 3 1
 @zoobab2: Sure is. $15k bike and a shitty crank.

Jason's ankle okay after that one?
  • 1 37
flag mtbwillems (Jan 6, 2022 at 13:26) (Below Threshold)
 @zoobab2: I believe it was only the pedal axle that snapped.
  • 10 0
 @mtbwillems: absolutely not. You can see carbon shards exploding everywhere and clearly see the end of the crank and axle eyelet are gone.
  • 4 0
 @lepigpen: Can I get that value in cash instead?
  • 9 1
 Nope. Actually, this is the correct Slow Motion link

www.youtube.com/watch?v=DmUsOcZQUvE
  • 1 0
 @Trudeez: everything I've owned from them has been rock solid FWIW. and their sales/service team is super nice and easy to reach. No, they're not paying me to say that
  • 1 2
 @Trudeez: True! I looked again at the big screen and it was the end of the cranck ,the thread-hole broke off.
  • 17 0
 Would love to see the structure scw1 hucked to flat, see a lot of bending forks here and would be interested to compare to the linkage front end
  • 2 0
 Please Pinkbike, make it happen!!
  • 4 0
 Also the dorado. Has more overlap in the bushings and so it should be smoother. Surprised to see so much flex on the fox 40.
  • 18 0
 Learn the lesson, kids. If you're an evil d-bag in this life, you'll be reincarnated as Jason's ankles.
  • 16 0
 Wild seeing the Chain tag the ground
  • 13 0
 It's pretty amazing to me to see the chains bouncing around as much as they do and still staying on the chainring. With narrow-wide chainrings I take for granted that my chain isn't going to fall off, but it's very cool to see how well they do their job.
  • 2 11
flag Tmackstab (Jan 6, 2022 at 13:29) (Below Threshold)
 I feel like top mounted chainguides are really useless, chains tend to come off on the bottom IME
  • 3 0
 bring back short cage mechs!
  • 8 0
 @Tmackstab: That guide keeps the chain properly catching on the first few teeth of the ring which I believe stops the chain bounce while pedaling - resulting in the next link to be picked up by the chainring missing and subsequently derailing the entire front ring scenario. Also if it bounces off the bottom of your ring there is a (debateable) chance that it will re-rail itself on the next pedal stroke if the chain is still properly interfaced on those first few teeth.
  • 6 0
 @Tmackstab:
Upper chain guide makes sense because if the chain come off at the bottom, it will come back om the chainring the next time the cranks are turned.
  • 1 0
 Also how much the derailleurs whip around. Especially the Trance (around the 2.20 mark).
  • 3 0
 @minesatusker: Exactly my thought - it was interesting to see how much variance there appeared to be in clutch tension on the Sram mechs. That one in particular looked like it was freely swinging forwards even after the chain inertia had let up.

Also looks like fork chassis have strengthened a lot in the last generation or two. In the first ever PB huck to flat the amount of fork flex was the most eye opening thing, doesn’t appear to be as dramatic now even though head angles are mostly even slacker.
  • 12 2
 What type of crank is the one that snapped from a huck to flat so I know never to buy that brand. Imagine having your crank snap while riding a steep bike park double black with successive hits.
  • 11 10
 Praxis. It’s not uncommon for their carbon cranks to break.

Also RaceFace doesn’t make very good carbon cranks. They are very prone to breaking (all of them. Next SL, Next R, and SixC).

For carbon cranks the only ones I can really recommend are the SRAM X01 (as well as the DH variant) and Truvativ Descendant Carbon. They are the strongest carbon cranks on the market.

Also the X01 and XX1 cranks are identical except for the fact that the X01 has a foam inside which adds ~13g (negligible) and makes it much stronger. And somehow cheaper as well. Same thing with the Descendant and Stylo cranks. Idk about the GX ones tho. The Descendant is the exact same as the X01 except that it uses stainless steel pedal inserts rather than aluminum. (Same thing with Stylo/XX1).

I don’t know much about e*thirteen’s carbon cranks but I have never heard of them snapping so I guess they’re good.
  • 3 0
 @louiefriesen: Interestingly I have only broken a SRAM XO1 while my 2 Next R cranks have taken quite a beating. One on a hardtail that has handled good chunk at speed and upwards of 10' drops. I am careful about not scraping the surface at all on either.
  • 6 0
 @louiefriesen: Didn't Gwin snap e13 carbon cranks?
  • 6 1
 @AvidTrailRider: "Prototype!!! Enduro, not DH!!! It was John Hall's fault!!"
  • 3 0
 @louiefriesen: You dont remember Aaron Gwyns ankle injury that put him out in 2019? That was from a snapped e13 crank
  • 9 0
 @louiefriesen: e13 cranks are hot garbage. Three riding buddies broke them at whistler on the same day.

As someone else said, Gwin broke one in practice causing an ankle injury which some would argue has completely changed the trajectory of his career.
  • 2 0
 @louiefriesen: the e13 cranks may break less but they unthread themselves 5x on every ride no matter how well you torque them haha
  • 2 2
 @louiefriesen: I've snapped a set of X01 DH carbons and know of other people who have also
  • 1 0
 yeah, some of these sucks were not very elegant, eh.
  • 6 0
 So why bother with carbon for these critical parts. Look at the sharp point, this could easily have gone somewhere into his leg, especially considering a failure like this would have you fall over/on-top of the bike.
  • 2 1
 @louiefriesen: I have run X01 on my last 3 bikes with no trouble,and I'm heavy and hard on gear,just recently broke the left eyelet out of one, luckily on a very simple jump following my wife.no injuries thankfully but if it had snapped the day before on the nasty jank I was riding I would have eaten a very large shit sandwich, probably equivalent to a subway foot long?. anyhow,back to xt for me!
  • 1 0
 @dkendy1: I was not aware of that, thanks.
  • 1 0
 @lightone: just look at that plastic crap
  • 1 0
 @rvdoever: I don't bother with carbon; I take the 100g penalty and ride XTR cranks!
  • 4 0
 @JohanG: or even better, eeWings
  • 1 0
 @Smoothy55: yep can't beat the trusty XTs! N
  • 6 0
 Seeing as how the tires compress and rebound much faster than the bikes’ shock or fork in these slo-mo videos, does it have any real world consequence out on the trail? It would seem that whatever suspension curve the frame engineers work into their designs don’t necessarily account for the tires’ reactions to these big hits, given that we can see that distinct pause partway through the bikes’ travel until the tires compress a second time after the initial hit.
  • 2 0
 I've noticed this in earlier HTF videos. The tyres rebound before suspension is fully compressed. So at some point the fork and shock are fighting against the additional force of the tyres springing back.
  • 1 0
 This will also change once you introduce tire inserts
  • 2 0
 Interestingly, this has been the motivation behind development of Pro-core and some of the tire insert brands... not just pinch flat protection, but making your tires and suspension play together better. I believe they run cush-core in these videos, but obviously it doesn't completely dampen the tire rebound.

That said, full-compression huck-to-flat is a very specific scenario that doesn't occur very often unless you're seeking out that kind of thing. I also recall the PB staff saying they run pretty high pressures for these huck-to-flat videos (>30 psi), which will dramatically affect how fast the tires rebound and mess with the suspension compression rate.
  • 1 0
 @khue yeah agree.. PB needs to do a HTF video for different tyre brands to help us choose the right tyres
  • 4 0
 It looks as though almost all the duallies go through 2 stages of compression. Like there's the initial impact and shock compression, then they pause for a bit, then proceed to go through their remaining 25% of travel.
It looks most minimal on the single pivot Starling.
  • 1 0
 Yeah I'm interested why this is too. Is it because they interact with the rider's reflexes? like the first stage is taking impact of bike and rider before the rider responds, then a big pause while the rider soaks up the hit, finally suspension again for whatever is left?
  • 3 0
 @sideshowb: Two reasons, one is that the rear tyre compresses, rebounds then compresses again during the time that it takes for the suspension to compress, so the wheel is moving up and down as the bike travels down. That means the speed of suspension compression is very high as the wheel is coming up while the bike goes down, but then drops again as the wheel starts coming down into the tyre again, so you see what looks like a pause.
The other reason is to do with the rider as you say, but not really reflexes, more just that there's a lot of slack between the bike and the riders weight, particularly as you are dropping toward the ground. So by the time the riders feet are mashed into the pedals and the rider has started to resist the impact, the riders weight is really only fully acting down onto the bike in the very last bit of the compression (watch his legs and ankles), so there is a bit of compression from the weight of the bike landing on it's own, then the suspension is just about to start recovering when the riders weight really hits the bike and pushes it all the way through to bottom.
  • 4 0
 The tire rebounds so quick, the tire almost looses its contact to the ground, creating a counterforce to the downmovement. So there is no force reacting towards the shock, hence no shockmovement. Once the tire reacts to the downforce again, shock starts moving.
  • 1 0
 I noticed that too and was wondering why.... suspension kinematics, multistage action in the shock...? is this "progressive" air spring in action?
  • 1 0
 I think that's how the rider is landing with his weight shift as he comes down. You'll notice that when he lands rear first, the flex on the fork is much greater.
  • 2 0
 Why do the riders always pump the brakes between the initial and 2nd compression, Stoic rider excepted?
  • 1 0
 it looks like that, also looks like he's appliying the brakes on each landing
  • 7 1
 would love to see the drive side next huck to flat!!!
  • 4 1
 Jason being right foot forward, you would'nt see the rear suspension then, which is the point of the huck to flat
  • 2 0
 IMO it shows that really stiff suspension is faster as the bikes are almost stopping as they go through the fork travel only to continue with momentum on bottom outs... Times this "stalling" by the 1000s of hits in a race run and the time lost would add up significantly...
  • 1 1
 Congrats on the dumbest thing I'll read all day.
  • 1 0
 @JohanG: Go read some Trump/Biden quotes kook. Lol
  • 2 0
 Late to the party i know,but im stuck in hospital watching everything to relieve the boredom,ive watched this a few times and never noticed,on most landings jason is on the brakes,some not,and he brakes to fully compress the front fork,just wondering .
  • 3 1
 Amazing to see how much the single crown forks flex compared to the triple clamp forks. I wish more companies would make smaller lighter triple clamp forks for enduro and trail riding.
  • 2 0
 Agree - the bikes need to be designed with that in mind (some are) but I like the idea.
  • 2 0
 Formula is working on one, should be out soon: [https://www.pinkbike.com/news/formulas-prototype-dual-crown-enduro-fork-and-lightweight-brakes.html]
  • 4 0
 I guess we wouldnt see the rear shock compress cause Jason is right foot forward though.... makes sense
  • 4 0
 wait you guys didnt put a high pivot on the grim V2. I thought we were supposed to be in the futur of mountain biking
  • 2 1
 It's wild to see the seat stays flex on the Santa Cruz Blur. I'm assuming that flex is designed into the stays to add compliance. Also cool to see how some suspension goes right through its travel while others have a second push at the end of the stroke. @Jason, could you feel these separate stages of the rear travel?
  • 1 0
 Yes, the flexing seat stays are part of the new "Superlight™" (non-VPP) suspension design for the Blur.
  • 1 0
 Yeah, exactly my thought. Seemed to be the only bike where the seat stays flexed, or at least the only bike where it was visible. Even if it is by design, would it be too much to think that those would eventually snap?
  • 1 1
 @mogg76: carbon doesn’t have a fatigue limit, so repeated within-spec flexing of the stays would not inevitably lead to failure, unlike aluminum.

I would be more concerned about smashing the stay into a rock in a crash, but that’s a concern with any bike regardless of designed-for flex.
  • 2 0
 Norco Range gets the prize for weirdest imagery! Because the lower link is hidden behind the left crank, it looks like the chainstays are not attatched to the front triangle. :-D
  • 4 0
 So, where are the contest winners, and where are Top Comments of 2021?
  • 8 0
 I've got a feeling a couple of the top comments are probably too anti-Outside
  • 2 1
 Loving the Hans Zimmer esque Interstellar soundtrack, suitably epic for this video!

Couldn't help thinking it looked like they went a bit gingerly on the Capra/Crackra compared ot the others.
  • 4 0
 rear mech on that Trance almost went all around
  • 2 0
 That's a new feature on the new Trance X, supposed to give you that chainless ride feel. Another positive side effect is that the chain keeps smooth by bouncing of rocks and the ground.
  • 4 0
 The derailleur on the Trance X, holy cow
  • 2 0
 derailleur not set to locked mode?
  • 4 0
 why the bmc has no rotor??aahah
  • 1 0
 That's what I was gonna say! I guess no one else noticed?
  • 1 0
 Air brakes... brand new top secret development!! Shhhhh!
  • 1 0
 No rear rotor on Norco Fluid either. Weird.
  • 1 0
 If I remember right, they were using a single set of wheels for all of these bottom out tests and the BMC set up for rotors so they just took them off the test wheelset.
  • 1 0
 Awesome and fascinating video, I thoroughly enjoyed watching the movement of multiple suspension designs. Also interesting to see the Cushcore come to life in some of those tires....
  • 2 0
 Thanks for using our Ramps Pink Bike!
You can use a Sender Ramp for all your hucking needs...to flat!? Of course it goest to flat!
  • 1 0
 Nice ramps guys
  • 1 0
 Interesting to note that everyone rags on SRAM for not having a strong enough clutch on their Eagle derailleurs, but the video shows the Shimano derailleurs are the ones shown flopping around like ragdolls.
  • 3 0
 damn.. should we be pouring one out for that ankle?!
  • 1 0
 Amazing how much the spokes in the rear wheels flex; seems to be more pronounced in the alu wheels. Incredible how much the wheelbases shrink too
  • 1 0
 Today I watched for how hard a slap the rear mech took and how much chain 'wave' there was and how close the chain was to coming off. I didn't think it would be so varied.
  • 1 0
 Should hire me for these bottom out videos.
I'm 16 stone or 100+kg and will bottom the eff out of the bikes.
Also I enjoy a good huck to flat.
  • 3 1
 well, I know what I'm watching during lunch! Thank you PB!
  • 7 0
 always watch videos on company time. #antiwork
  • 2 0
 Does the tire contact the seat tune on the Ibis?
  • 1 0
 Was going to ask the same question. To me it looks like a good tire rub or maybe its just the view angle... not sure.
  • 2 0
 How times have changed. Seeing the word 'Rapha' in there!
  • 1 0
 Jason if you ever get tired of doing the Huck to Flat I will gladly volunteer my time! Sign me up for the next field test.
  • 1 0
 20 years in future, Jason’s kids will ask why he uses a cane. Jason will talk about the knevo’s cheap carbon cranks.
  • 1 0
 Watching the chain and rear derailleur during the Trance X bottom out was my favorite part.
  • 1 0
 Hey Pinkbike, sorry if I missed it but what were the tire pressures set too?
  • 1 0
 went back and watched a different video...you mention 35psi...nobody actually rides at 35psi though...probably nowhere near that...I wonder about adjusting that to say 25psi for future?...be interesting to see how many more rims actually contact the ground.
  • 1 0
 This forks too Flexy for my bike Too flexxy for my bike Too flexy for my Biiiiiikeaahh
  • 1 0
 the interesting one was the santacruz seatstay twanging about near the linkage pivot
  • 1 0
 everyone says RIPMO AF is a good bike... poor thing almost broke in half here
  • 2 0
 +20!
  • 2 0
 NSFW
  • 2 0
 Disappointed no masterbation jokes yet.
  • 1 1
 Here's the actual link to the correct video:
www.youtube.com/watch?v=DmUsOcZQUvE
  • 1 0
 Seats move on a couple, the Marin for sure
  • 1 0
 broken crank, not too good of a product test! lol
  • 1 0
 freeride field test when?
  • 1 0
 Lesson of the video: Those sram clutches really do something
  • 1 0
 Cause nobody likes a broken ankle...
  • 1 0
 Lol! They look so silly and tiny all bottomed out
  • 1 0
 And we wonder why our csu’s creak.
Isn’t it obvious?
  • 1 0
 So carbon cranks no good on SPez Kenevo, snapped out of huck to flat.
  • 1 0
 Am i the only one who saw that the crank just snapped on a SWORKS bike?
  • 1 0
 bar flex on the budget bikes is interesting compared to the high end parts
  • 1 0
 Huck to flat a fully rigid and a road bike for the hell of it.
  • 1 0
 Anyone notice how much most cranks twist as the pedals bend down?
  • 1 1
 Best landing = Raaw
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