Slammed Vs. Non Slammed | GCN Does Science

[@D.Eldon_]

As explained elsewhere in another GCN video, an aero position is not merely bending farther at the hips so the head and shoulders are lower. Only bending at the hips would constrict the chest more than necessary and may reduce the sustainable power greater than the aero benefit. Rather, a proper aero position is more of a rotation than a bending -- using the crank axle as the axis of rotation, the entire body is rotated forward. If done correctly, the hips will be farther forward and this will push the torso farther forward, too. More adjustments may be required than was shown in the video: (1) The saddle is moved forward. (2) The saddle is tipped down. (3) The handlebar is moved forward. (4) The handlebar is moved down. (5) Some cyclists also switch to a shorter crank arm length (this is common with triathletes). Only (2) and (4) were done in the video. When all of the adjustments are made, there should not be a major constriction of the chest and there should be less effect on the cyclist's output power. Two additional issues may have affected the tests: (1) The object in the middle back pocket of both Dan's and Matt's jerseys may have raised the drag differently for each riding position. In an aero position, the expanded middle pocket has greater exposure to the wind and may have created more drag than in a less aero position where it is sheltered more by the cyclist's back. This may have counteracted some of the benefit of the aero position. (2) The duration of the tests were too short, making the data statistically questionable. It would be good to see these tests repeated with the back pockets empty and a much longer duration used (20-30 minutes, perhaps).

[@shyamfootprints972]

Very good points.

[@ystadcop6935]

I dropped my stem, hacksaw etc. following Simon's vid, a month ago. About an inch (25mm), no back problems, no additional strain on my arms. And when I cruise past plate glass shop window I look desperately cool. Belly sucked in, of course.

[@NVGTO]

Hahahaaaa!!! And that is the real reason we're all thinking about slamming the stems!! Hahahhaaa!! Isn't it just so goooooooood when you catch a short glimpse of that reflection as you "speed" by?!!!

[@kewang7962]

Beautiful comment!

[@siskokidd]

For well over a decade I rode a simple 10 speed steel frame, with the handlebars level to the seat, riding mostly along coastal (flat)routes. I never bothered to question my form, or whether it was efficient. I was just happy to be out riding. Then I got the climbing bug, bought an expensive carbon wonder bike, and was properly fit, during which I learned quite a bit about form, efficiency, and how to relax in a variety of positions. I was encouraged to drop the stem over time, allowing the muscles and tendons to stretch and adapt. I found it easy to adopt a more aero profile, but stopped lowering the stem at near 2 inches below the saddle, a nod to comfort. I have ridden a bike with a considerable slammed geometry, and found I could ride that way, but only for short distances. It would take time to feel comfortable on longer rides with that geometry. The neck muscles in particular have to adapt to the more extreme angle to be able to see.

[@ayrtonoc]

siskokidd same findings for me. About 5/6cm for maximum drop

[@adityasubhedar9556]

How much time did you gave to adopt to that position

[@goku445]

Being able to see forward is overrated.

[@laurensvanrossem5143]

I used to have really sore shoulders and lower back when in a really aero position. 1h/week of upper body strength training fixed that for me

[@ShermanSitter]

thanks for the note! did you add stretching also or just muscle development tools like weight training / body weight exercises?

[@laurensvanrossem5143]

DFTA (Don't Feed The Animals) I don't use weights, just push-ups and some core exercises from gmbn. I always stretch before and after a ride. Helps to be flexible when you crash as often as me :D

[@mr.actiongal1017]

bananas also helps with bending over seriously

[@ShermanSitter]

Great info. You sound dedicated to the sport. I do stretching mostly afterwards and some weights / body resistance. i try to do 'supermans' (laying on stomach, lifting arms and legs) ...supposed to be good for lower back.

[@Methodical2]

Try some "good morning" back exercises for the lower back.

[@1-less-car]

GCN is top class for advice, information, technical, hardware and fun. Thanks! Can I ask you to think of an older, less fit, more amateur rider who wants performance, but needs comfort (and safety) too...Maybe, you can look at flat bars, flat pedals (suspension?) in an urban environment and 40km-100km pleasure rides.

[@godricalex3531]

I agree. I got a Fuji Sportif (Endurance frame of course) and got my stem slammed to try to get some more aero. After two months riding in such position, yes, I did get faster but with the side effects of lower back pain and my hands got tired way faster. I also feel tired faster as I can't get used to it in the long run. So now I changed a little bit by increasing the spacers just 2 more levels instead of 3.5. Now it feels way better and I get less painful in the long run (still hurt tho).

[@extrospective]

The Presenters already had slammed setups compared to 95% of riders

[@otisedward3964]

you all prolly dont give a damn but does someone know a way to log back into an instagram account..? I stupidly forgot the login password. I would love any assistance you can offer me.

[@jayceonarthur2365]

@Otis Edward Instablaster :)

[@TheBarlettano]

ignore these bots above me, this is a scam

[@PeLuK2303]

I used to have like 2.5 cm of spacers, and I try to slowly get a more aero position. Took me like 5 months to get a 1.5 cm lower. And a lot of stretching.

[@barefeg]

but the idea is to also raise your saddle and push it forward so that your hip angle is more efficient... just slamming the stem is going to make it harder to push the same power as before.

[@simonliew9728]

Thank you for your sharing this video about slamming. I am 67 and a social cyclist really. Cycling is all about enduring the pain right from the start. As we cycle thru the years old pain will go and new pain will come. Just my 2 cents, lol. Cheers

[@lr3867]

I’ve gone somewhere in between and shortened the stem as well and found it’s comfortable for an all around ride

[@shyamfootprints972]

Should you slam your stem? Yes of course. I saw this video and slammed the stem at home. Took out two spacers of 5mm each. I love the slammed position after a 50km test ride. My back felt better than it did with the “unslammed” position. I will turn 58 this August, ride a 54 size frame with a 90mm stem on an endurance fit. It worked great for me! Thank you for the video and thank ‘me’ for listening to myself!

[@ayrtonoc]

Tried a year ago to put a stem 1cm longer and 1cm lower, but I had only neck and shoulders pain for 6 month until I've reverted to a more relaxed and "classical" position. I think that for us mere mortals, the best position to have on a bike is similar to the Hinault/Fignon fit of early eighties. Good setback, not too much handlebar drop, a nice large (14cm) saddle for extra stability.

[@leedorney]

Ive always rode a low stem, it just feels better...tho i have rode for years like so. Its takes a lot of flexiblilty to ride flat and tapering. Stretch !

[@mr.actiongal1017]

i slammed the like button

[@radiostation6366]

Mr.ActionGal101 bottom?

[@mr.actiongal1017]

XD

[@RyonBeachner]

real mf cyclist hours

[@msoldate]

@@radiostation6366 sqq

[@sanjoy87]

Did some experimenting with this after seeing the video about the pro's doing it. Found -9deg saddle tilt to be way too much, felt like I was sliding forward. Went back to -3 which I found to be very comfortable and more than enough to allow me to comfortably slam my stem which used to have 2x10mm spacers under.. Have been riding with this setup for a few weeks now and I'm very satisfied -no back pain. Quite amazed that tilting the seat, even only 3 degrees, could make that much difference, I have actually raised my saddle a few mm and tilted the handlebars a bit more down afterwards as well...!

[@jakegarrett8109]

sanjoy87 yep, I tried -9 degrees and was literally sliding off my slick carbon fiber seat (especially at stop signs or just slowing down). I'm sure the fact I Turtle wax even my seat doesn't help, but it was almost comically bad. I've switched to somewhere in the -2 degree range and don't have that problem.

[@brunospasta]

I guess the pros don't just "slam the stam" and say: "great, now I am aero". They spend lots of time, also with other people (experts) to get their setup right.

[@einundsiebenziger5488]

... stem* ...

[@philosopherprince1]

I'm a tall guy and most of it is legs, consequently I tend to be a bit of a puzzle for bike fit and frame size. I've found over a few years, that I just need time on the bike to adapt to, and be powerful in, more extreme positions. Learn to ride rollers, then you can hit it every day, all winter, in comfort and gradually get more and more forward while remaining smooth and in control with a good pedal stroke.

[@ydvitaSwim]

Thank you for your efforts! "6 observations per each situation" - this is already Something!

[@eightballsidepocket]

I don't have metrics, but when I slammed mine it just feels faster and my legs feel more efficient. Because of that, its more fun. My crosser is more upright and it feels like drudgery on the same roads.

[@TheBigCheese233]

For Matt, those couple of watts (average 4.33W more for slammed) made the difference and the wattage has an almost perfect correlation to the faster times (-0.979).

[@jakegarrett8109]

TheBigCheese233 are you taking into account drag is a function of velocity squared? Going 2x as fast (calm day) requires 4x the power.

[@TheBigCheese233]

Thanks for your input. No, I haven't thought of that. But I guess for the small delta, a linear approach is a good approximation. (If it makes sense at all to look at this small sample size)

[@teddansonLA]

When considering power, drag is even worse: speed^3. The force is speed^2, but power is force times speed. Going twice as fast increases the power consumed by air resistance by a factor of 8! However, a few watts is not the answer here, because 4.3 W would be only a 1.3% change; need to account for much more to explain these results.

[@jakegarrett8109]

teddansonLA that's correct, Power = cD 1/2 ρ v³ A from FD = cD 1/2 ρ v² A and P = FD v You can find this on engineering toolbox under lift and drag article with an example worked out.

[@thomaseichentopf3336]

While I agree with the verdict, you can't calculate a correlation on just six data points. Technically you can, but it's as meaningless as a five-percent difference that cannot stand the test of significance and statistical power (and doesn't control for the weather conditions, the number of cars passing by or coming up in the opposite direction, which can have an effect as well).

[@allthingsTechrelated]

I've been riding with slammed stem for about 1year and it's more comfortable i.e. It takes a lot of pressure off your bum as your upper body weight is more distributed plus the aerodynamic benefits especially in headwinds.

[@TeslaOsiris]

I had a Guru Fit done over the winter...not only is my stem NOT slammed, it's actually flipped upwards...the result: I'm faster than I ever was before with a slammed stem and it angled downwards. A comfortable rider is a fast rider.

[@unchirrienparis6554]

Please don't leave your house with a stem flipped upwards.

[@williamb4652]

unchirrienparis why not?

[@danielellis2874]

I went from a 120mm -6 degree stem with 10mm of spacers and switched to a 140mm -12 degree stem with no spacers, was hard work but I found that yoga really helped me adapt faster. I use GCN/fitness channel yoga for cyclists which is great! could do with some more of that content!

[@ShermanSitter]

i'll have to check out the yoga for cyclists video. good reminder!

[@0Gotland4Ever0]

Thanks! Got any particular yoga channel in mind?

[@wuhank]

would love to have a video about concerns of toe overlap when turning all the way to the left, tire hitting the toe of the shoe. Thanks!

[@theylivewesee1674]

remember that most pro's use a size smaller frame so the longer stem is a logical choice

[@brunospasta]

Yeah, very often it looks like the frame is "too small" and they have a large stem and a very tall seat post.

[@theylivewesee1674]

It's Trump based on aliens in movie "They Live" from 1988

[@_-_SK_-_]

i cannot get any power through the legs if on the drops, slammed or not, it´s a very uncomfortable position fo rme

[@theylivewesee1674]

same for me but I have also short arms and torso and long legs for my size so my quads are kicking my torso all the time and I have ergo bars with long reach and drop so I bought cinelli vai compact shallow bars with 75 mm reach and 123 mm drop so I guess that will work better for me

[@ShermanSitter]

They Live We Sleep - good points! I wonder if any of the pros have an issue with 'toe overlap'? Seems like if they have long feet it might be an issue with the size of the frames they ride.

[@nickrr3626]

3:43 ONEPLUS FOR LIFE

[@dangr123]

Getting a little better at "science". At least you have a sample size of three. I do actually appreciate that you guys are testing this stuff. The more scientifically, the better.

[@Samoor69]

You guys have to make GCN- soundtrack. These beats are spot on for cycling.

[@GordonMoat]

I tried various seat tilts for a while, but felt like I was wasting power trying to stay in the same position on the saddle. I think if companies start making seats to take advantage of more tilt, though for now I will stay with using a level saddle.

[@c.l.butler8712]

Thanks for this video, I had been considering slamming my stem. Now, however, I see no upside to slamming the stem outside a professional environment.

[@awakenedbahamut2574]

I went directly from an 80mm stem with 25 degree rise with 30mm spacers to a 140mm slammed stem with a negative rise.

[@tommccafferty5591]

Great video. Very easy to understand the points they were making.

[@djconnel]

One issue is they were clearly careful to maintain the same forearm position. On the other hand, if when you lower your handlebar you straighten your arms, you're losing the benefit, and this is when not thinking about it, not when focused on a test.. I find when I adjust my position I like taking photos of myself from the side, and the back position tends to be relatively independent of handlebar height within a reasonable range. If I can't ride with bent elbows in the drops then the bar is too low, but if it's too comfortable in that position the bar is too high.

[@veloman59]

Everyone has a different take on this but, I had slammed my stem before and the result was that I felt too elongated and uncomfortable so I gave up on it. However about six months ago I gave it another try and - just as an experiment - I slammed the saddle all the way forward at the same time. I use Fizik Arione saddles (which are long) and I usually have a seat post with about a 15mm lay-back. My saddle height was also kept exactly the same. As an additional measure (to compensate the saddle moving forward) I increased my stem length by 2cms. The result second time around, with the slammed saddle and stem was much better. More comfortable, more aero and being able to ride on the drops far longer and (seemingly) produce more power. I have now changed all my three bikes to this position and feel really happy with the difference it makes. Of course this works fine for me possible because of my limb length etc but maybe not for everyone. But it's always worth taking time to experiment I find and not give up. And I don't get any back pain either.

[@truetierra]

I did a 100km ride slammed like that in in the vid and struggled to walk for the next week. Incremental and with a good bike fitter would get the way to go I reckon.

[@iiii2903]

what's thepoint of an "aero position" if you have to go back once in a while to an upright position to relieve pain, what's the point of an "aero position" if it puts you at risk of an accident because you can't control the bike as well as with hands on handlebars what's the point of an aero position if your usual race/tracks/sessions are on a circuit with hills and curves forcing you to constantly leave the said "aero position" An "aero position" is valid only on flat and rolling road profile, but is counter productive on other road profiles, what's the point of gaining watts on the flat out part of a ride if it's to loose them because your "aeroposition" is not adapted/couterproductive for the coming steep hill... "aero position" is good for pros who once in a while will ride on a time trial on a rolling course. For the rest, get a "confortable position", put some aero bars on your handlebar for the rare long flat parts of your sessions/races, and you're done. satisfaction and performance guaranted.

[@SgtFinaldo]

Ive heard that cutting the steerer fork to its lowest position, which results in a zero spacer slammed position, reduces fork flex. My Planet X is cut and uses one tiny spacer, otherwise its slammed. Back is fine, but you do some upperbody exercise and stretches. Work on your core as well.

[@jacksquat2067]

I'm a heavier rider. The lower my bars are, the more weight is pushed forward onto my arms, expending more effort and raising my heart rate. So it doesn't really help me. But if you weigh 140 lbs instead of 213, I imagine that effect might diminish.

[@ayrtonoc]

Ian Snyder I'm weighting 78kg but if i slam, i end having to much weight on hands because I'm big on my upper body. So neck and shoulder pain.

[@jacksquat2067]

L G That happens to me too. I could probably get used to it if I trained that way, but I don't race, so it doesn't matter enough to pursue. And with my lower spine having been injured, there's even more reason not to ride that way. I'm almost 97kg and have a 127cm chest. It's a lot of weight to support. I should've taken up cycling instead of weight lifting when I was younger! :P

[@nicksexton927]

You probably need to compensate with your saddle position. Worth getting a bike fitter to look at it. My current position on my road bike looks very aggressive (slammed, long stem) at the front but once my bike fitter had got the saddle in the right place (all the way back on the rails), it was a natural way to set up the front with very little weight on the arms. So I would say a comfortable long low position is possible but it's probably a mistake to just change the position of the bars, you need to look at what it does to the whole bike fit overall.

[@jacksquat2067]

Nick Sexton I've explored that too. Sadly, due to the weight in my upper torso, my point of balance is ridiculously outside the range of the seat rails. But I appreciate you taking the time. Maybe I'll finally break down and buy a recumbent someday. ...But probably not. :)

[@nicksexton927]

Ian Snyder I guess you tried setback seatposts? I tracked down a canyon one with 35mm setback. And I think Selle SMP saddles have really long rails. Recumbent would definitely be even more aero anyway...

[@neelsahay5227]

"sorta speeds the pros do, w/o their power outputs" -Matt and Dan, 2 former pros lmfaooo

[@tfmguitar]

I was getting numbness with -6 degrees on the saddle so beware of that. I am now using -3 which is more comfortable than flat saddle for me atleast.

[@scotthunter4]

The video doesn’t even mention the improvements to handling and steering from slamming your stem. I went from having all 4cm of spacers under my TCR stem to just having just the minimum 2.5mm spacer above the headset cone and the difference it made to the handling was huge, it now corners like it’s on rails thanks to the Overdrive 2 headset with oversized lower headset bearing. It’s also much more aero on the hoods so I don’t feel the need to use the drops any more for aero advantage. I find the position perfectly comfortable over 100 miles, although I’m in my mid-30’s and in good shape. My average speed has also increased. The only discomfort I had initially was numbness in hands on a long ride, so I straightened my wrist position by lowering the bar angle forward by a couple of degrees

[@EhButU]

Interesting to do same test up a long climb - would the lower front hinder climbing - is a higher front better for climbing - especially when standing

[@BladeBarn]

I want to know aero difference between taller bars and in the drops vs slammed and on the hoods. same positions provide the body position but arm position is the difference here I want to know.

[@MrBlinker96]

Matt, what have you done to your lovely bike? Quick releases pointing in weird directions and what is that on your Seat post? Still, however, great Video as usual!

[@zed5700]

What tyre size should I use 27.5 or 29 for my road....I use that bike to go for a long distance.

[@karvinsunny4199]

video idea: Who is the most efficient GCN presenter ? ie. who pushes the lowest watt for a given speed

[@RyonBeachner]

Karvin Sunny Li Lightest to heaviest. There's your answer.

[@checka1963]

Couple of things - when riding in the peloton the slammed position will be irrelevant as drafting far overrides aero position. When riding in slammed I find, like they did, that it is faster, but hard to sustain much longer than say a 20 minutes flat out attack. And if you are a climber and want to attack on the hill, slammed not relevant either. So depends on your riding style and strengths/weaknesses.

[@romerogaston]

WHAT MOUNTAINS SO BEAUTIFUL FROM WHERE THEY DID THE CHAPTER

[@markreams3192]

You might be better served by doing your test on an indoor velodrome maintaining a constant speed and measuring the power it takes to maintain that speed in each position. There would be a few less variables effecting the outcome.

[@BeamRider100]

Our man is stood here and we're going to sort him with his kit.

[@VeejayRampay]

This feels like a lot of suffering in the shoulders and at the base of the neck as you try to look forward while riding. It's most likely an interesting position if your body is used to it, but it takes time to get there and I reckon, a lot of pain.

[@yesto9676]

Sounds like they got some new music now. Nice

[@petertachev8796]

Where can I buy the slammer fsa stem?

[@markmeijerink5962]

Do you have the raw camera images to share? You slammed by us at full speed in in the Valparola downhill on the flat part.

[@KieranSulikosky]

Which team kit was that, Dan?

[@animatorbrent]

Do you think it has to do with keeping a more consistent position between a rider's tt and normal race position?

[@Charles-wz9sd]

I slam my stem and find that I still could be even lower in the handle bars while still being comfortable, should I just remove my headset cap or should I spend a bit more on a stem with a -25 degree bend?

[@NielsHeldens]

A moment of silence please, for the egos that were lost during these tests.

[@chuckfinley3542]

Just what we need: cyclists on hyper-slammed stems on the road with oversized trucks and wayward motorists. I've seen too many accidents involving cyclists emulating pro riders and trying to look awesome on shared roads.

[@sylvestervoigt9836]

Switching to a smaller crank length would create the 'Slam' since the seat height would increase to get your legs back to the almost straight position. Your breathing would be easier because the knees don't approach the chest.

[@sarethums]

I wish these tests were more scientific.

[@alphatozeta]

Which pro team did you ride for again Dan?

[@maxout5858]

Dhruv Singal I think he rode for cervelo test team or something

[@mtbrnz]

Can anyone tell me where to find one of those -17 FSA stems like that in the video? Literally looked everywhere.

[@jordywilliams]

forget fsa, get a fizik

[@2trainyourself2]

really hoping you guys pick me for the quarq giveaway! Rode up a local mountain (14 miles , 3k ft climbing) the past 3 weekends and that power meter would really help with pacing it on future rides.

[@crypto_que]

I can barely get into the drops b/c of the pressure I feel in the saddle. Aero is uncomfortable as hell, adjusting the bars down so they're level with the stem just a few degrees - is a major pain in shoulders neck & lower back.

[@peterlisseveld]

We saw you shooting this video two days before the Maratona! We're the three guys blocking your path. Sorry! Love the show!

[@adityarajvaidya927]

Can i use adjustable stem in my roadbike and tilt it down to be more aerodynamic...

[@pipledo5615]

Ye

[@fallenentity2]

Do they also run smaller frame sizes to do this?

[@vinniecent07]

Who knows the brand of the stand in which the bike stand at the beginning of the video? 0:04 - 0:07

[@paulysci925]

You guys look hella more pro position wise 😲 I'd say it's worth it if you can loosen and work the back 🙂👍🏻

[@55chh]

The tilt of the saddle puts a lot more strain on shoulders and arms. If I tilt mine just a little I get a very uncomfortable sensation that I am sliding off and have to constantly push back. I can't imagine what 9 degrees would feel like.

[@kelvinwong7249]

How come Dan never rides on the drops? I'm new to cycling and was just wondering if there would be a huge difference between riding on the drops and the hoods.

[@ssterlini]

I tilted my seat slightly a couple of months back, it was more comfortable to get more aero and i got rid of numb nuts but started getting saddle sores, tried to get used to it for a month or so but couldn't get rid of saddle sores... ended up going back to numb nuts and the saddle sores have gone...

[@josephdoby6411]

What angle did you tilt the seat to and do you use Chamois Butter before each ride? Also just out of curiosity do you have aero bars on your bicycle? My seat it tilted slightly down to -2 right now. I will be doing my first 30 mile ride on it this evening.

[@gabriel.trainer]

3:14 Matt. What neat glasses! Would you mind to share what brand and model is it?

[@rodrigocruz360]

Oakley Jawbreaker

[@mr.actiongal1017]

neckbreakers

[@adityasubhedar9556]

I have flat handelbars and 80 mm stem should i slam it

[@tonyblougoutas4988]

Hey, I slammed my beach cruiser stem, it keeps the front wheel on the ground and handles great.

[@llandor]

I got about 3cm of spacers, but since my legs are so long I still have a almost 10cm drop from saddle to hoods.. And after a little 130km++ ride earlier this week my shoulders are pretty sore. Legs are fine though :)

[@skyscraper5910]

How many degrees downward were the “slammed” stems?

[@AlvarWahle]

What muscles did you feel you activated in the slammed position?

[@jameswoods6789]

Great video @gcn

[@martynasss1]

The question is what is drop from saddle to handlebars. And can you ride for example 150km with 14-17cm drop.

[@cheryee3659]

So when is the new wheels size coming out ??

[@durianriders]

I slammed my stem and my GF caught me and now she is angry. :( PS: Anyone know how to get carbon grit paste off your banana?

[@dannitron1934]

Just sipe it😂😂😂

[@815thengineers8]

GCN is the BEST cycling network on KZbin!

[@gcn]

+815th Engineers thanks

[@teleotto]

How to strength train and stretch for slammed position pls

[@z1522]

This is reminiscent of the old saddle height formula and look circa 1975-1985, where power studies claimed optimization but riders could not stand to put hours daily in those positions. TT usually no more than an hour; riders know what they can tolerate for long duration, and I bet most will forego these tweaks as they suffer the consequences.

[@AR1G3]

As others here mentioned it's a case of rotating your whole body, not just bending your head and torso down!

[@Enigma71559]

Forget the few cm they were messing with here. The trend in recent years is to go for a seemingly ridiculous seat to bar drop. I guess aero is the reason. Look how much seat post shows on the pro bikes now. Compare it to the 90s when Lemond was racing. Not nearly as much post and they got in pretty aero positions with longer top tubes. The pros look like they're riding kids' bikes nowadays.

[@thomasf.9869]

Great video!

[@mr.actiongal1017]

you guys should play how low can you go on the bikes 0:46 Matt

[@DIASDEMUSICA]

It´s so funny when I see that GCN does Science.. hahaha I wonder If your really know what science is, and what does it mean in terms of the study: years and years, teams and teams, a number of variables to study. This is nice for a KZbin show, and nothing else. The resume is that if you want to push as much as you want, the bike has to be fitted to your size (go to a biomechanical tech) and don´t care at all about slammed or non slammed.

[@mmenjic]

7:04 ok but how ? Saddle you can tilt gradually but how do you tilt the stem ?

[@KilometroFinal]

You gradually remove spacers one by one to get accustomed to it

[@thomHD]

I can't understand how a perfectly horizontal saddle could be comfortable except for the tallest (and skinniest) riders? 5 degrees downward is preferable.

[@peterliljebladh]

The lower height of the stem is a no brainer but what does the saddle tilt add to the equation?

[@farturinn]

Looking at it differently, Matt actually has more power in a slammed position? And Dan puts more power out in the Non-Slammed. Interesting stats, probably different muscle groups being worked.

[@Bartooc]

I bought a 35° and thought to put it upside down but in the manual it says it can't be used as -35°. Anyone know why would that be?

[@gcn]

Not entirely sure, but always best to follow manufacturers guidelines :)

[@neilmoses3376]

I went from the top to mid way sat on it then went all the way to the bottom wish I had done it sooner as it also handles better 🙂

[@investireocaminho33]

great video!

[@pinnaclewd]

I would not trade aero for power! The science shows extreme slammed position leads to less power due to pelvic tilt. As Dan quite correctly says he felt he produced less power and thats because he did. The test on a downhill run was all about aero not increasing power.