How fast have you gone on a bicycle? 40mph? 50mph? Maybe even 70mph? That's quick enough to scare most of us off from making a habit of hitting such skin-peeling speeds, but then there's Denise Mueller-Korenek, who most definitely isn't like most of us. Denise hit 183.93mph this past September, otherwise known as NOPEmph and a number that was high enough to crush the motor-paced bicycle land speed record by 17mph.
That's 296kph in my currency, which is nearly three times the national speed limit on the highway. Or just a touch slower than the top speed of the new Acura NSX. Or way faster than a human's terminal velocity while free falling.
You think that your Pole or Nicolai is long? That's cute. Wheelies are probably out of the question.
First, what the heck is the motor-paced bicycle land speed record? It's pretty much what it sounds like, with the car (a freaking dragster in Denise's case) towing her for a mile and a half before she pulled a lever that released her from the back of it. But - and this is the important part - she stays tucked in behind a giant fairing attached to the back of the car while pedaling up to her max speed of NOPEmph. After that, Denise actually bumps up against the back of the car to slow down until she can use her one brake, which is just a simple V-brake.
The bike itself is equal parts exotic, rough around the edges, and pretty strange looking. And really, really long.
The carbon frame sports extremely thick tubes and aerodynamic sections that were designed to increase rigidity.
The wild looking frame is carbon fiber from tip to tail, and it was designed and manufactured by Len Lochmiller in San Diego. It also appears to be longer than Manute Bol was tall, and that's not too far off; it's well over 7ft long. That's for stability, of course, with a lot of the length behind Denise. The frame is so long, in fact, that a third triangle was created around the rear wheel by an aerodynamic tube that joins the seatstays and chainstays. Hey @paulaston, is this long enough for you?
Weight isn't of much concern when you're doing nearly 184mph across Utah’s legendary Bonneville Salt Flats; the frame ain't light, and the whole package is around the mid-30lb mark. In other words, it's longer than a Nicolai but still lighter. I jest.
The 17'' rims and spokes (left) come from the vintage drag racing world, and the tires are shaved down to make them as round as possible. There's just a simple V-brake (right) on the back to slow down.
One of the biggest challenges at these kinds of supercar-like speeds are the wheels and tires - who would have thought that cycling rubber isn't meant to go 300kph? Actually, there aren't many tire options for those speeds regardless of the vehicle you're using, which is why Denise's team ended up looking at vintage drag motorbikes.
That's where the 17'' rims and spokes ended up coming from, as well as the tires, and there's a set of modified Profile mountain bike hubs at the center. These were put together by Chris Garcia of SD Wheel Works.
Things get really wacky when you look at the number of chainrings and chains, but it's all there to serve a very specific purpose. If you had legs for days and four or five thousand watts to spare, you still probably wouldn't be able to break 40mph on flat ground simply because the gearing of your mountain bike, which is what provides the leverage, is going to top out. Even road bikes with tall gearing will spin out not far past that.
The answer: A compound drivetrain using two chainrings, two cogs, and a whole lot of chain. All this was assembled by Todd Schusterman of Davinci Designs.
Remember, Denise didn't have to pedal her bike from a standstill but was towed by that dragster for the first mile and a half or so. After that, she unhooks from the car and is under her own power, so she only needed gearing that's going to work well into triple-digit speeds. What they came up with was a 62:12 ratio that's doubled which, when you do the math, works out to about 130ft of distance traveled every time she spins the cranks around. One pedal = 130ft. Wowzers.
For some context, your 29er and its 30-tooth chainring and 10-tooth cog give you approximately 23ft of distance with each rotation of the crank. So yeah, Denise is pushing a bit of a tall gear.
Without the compound drivetrain, Denise's chainring would have had to be comically large.
The compound drivetrain combines the left and right-side via a bottom bracket (of sorts) with a driver that sits on a slotted mount, and it's a bit like a bastardized, single-speed tandem drivetrain designed to break the sound barrier. I suspect that you'd just fall over if you tried to get it going from a standstill, but I would love to watch people try.
The dual crown fork is an RV1 from X-Fusion, and it's been modified to supply around 1.5'' of travel while still being long enough to give the bike speed-appropriate angles. There's no shock, but there is a suspension seatpost; go ahead and make fun but I bet things feel pretty rough at 183mph, and this has to help. There's a Hopey steering damper, too, because speed wobbles are the last thing you want in this game.
I've always like to push a tall gear, but with a nearly 130ft rollout this is taking things a bit too far no matter how many squats and lunges I do.
One side of her Speedplay pedals were fitted with these aerodynamic covers that resemble the surface of a golf ball. And no, that's not dirt - it's salt that was thrown up from the ground when Denise was at speed.
There are two more things at the front of the bike that are worth pointing out, one of which she needs to speed up and the other to slow down. Attached to a small carbon piece that extends out from the headtube is a cable-operated hook that attaches Denise's bike to the back of the drag car while she gets up to speed. Once she hit somewhere around 100mph, she pulled the left brake lever that's connected to the hook, and it releases her from the car. At that point, she's both under her own power and tucked in close behind the dragster's custom-made fairing.
The bumper (in red) is how Denise slows down as she bumps it up against the back of the dragster. The cable-operated hook behind it is what she used to get towed up to 100mph or so before pulling the left lever to release from the car.
Once she hit mach chicken, it was time to slow down ever so gently. If she simply pulled out from behind the fairing, the wind speed would likely feel like hitting a wall, a wall that would probably roundhouse kick the strongest of riders to the salty ground. Even with motorcycle leathers, that'd be pretty nasty.
Instead, Denise actually bumps up against a specific section of the back of the drag car as it coasts down from speed, and then she can use the rear V-brake once she's going at a more normal pace.
Remember Hopey steering dampers? Denise needs hers (left) to keep the bike stable. And of all the places to use a suspension seatpost (right), this has to be the coolest.
Unless you like to set landspeed records for a fun (and ridiculously scary) hobby, Denise's bike doesn't have much in common with what you or I spend most of our time on. It's certainly not a mountain bike. What it is, though, is an example of what happens when you have a single focus and one job: To go fast as f*ck. It doesn't have to jump, corner, or even start from a standstill under its own power, and while a common bicycle can do all those things, it would likely fall apart long before NOPEmph. The right tool for the job is the saying. So while Denise's wild, one-off "KHS" has no bearing on what we ride, it's neat to see a bike that has one very simple, yet very dangerous task.
So, what's the fastest you've ever gone on a bike?
KHS: Ok
Fastest bike in the world is a recumbent raced somewhere in Battle Mountain, Nevada. Last I heard they were doing close to 90mph. With their legs as their sole power source.
This is not an un-assisted human powered record.
I would argue that the terminal velocity of a dude taped to a bike is probably far less than the 183.93 mph.
Edit: Nevermind, If you're including the initial forward velocity from the plane then you would be correct.
#ILoveMaths
I’d like it if she had to pedal all the way from 0, but as long as she did the final 1/3 of the velocity under her own power, I’d call that honest.
*Books uplift*
I reckon an aeroplane assisted bike speed record would be awesome to watch. I'd definitely click that link, if it was posted.
Markus Stokl's ride of 102 km/h down the side of that Atacaman volcano gets my vote for worlds fastest ride.
@willj82: yes, I would actually click on that vid, rather than just talking shit about it.
Well technically. Even these gentleman and ladies at Battle Mtn. are getting an assist. Right at the start, a little human push assist.
I find this exercise interesting, because it's how the Higgs Boson Field might work and show why we can't travel faster than light. It makes me wonder, can an object be drafted in a HB Field, so that the second object is prevented from experiencing the same time dilation and acquiring increased mass of the first object which is creating velocity? Or is the reaction of an object passing through the HBF the same for each object traveling through space no matter the distance relative to one another? Do the people at CERN think that the HBF might have a gravitational wake of some sort? Finally, if something could exceed the speed of light, would it shed its mass in some sort of "light boom", reminiscent of a sonic boom achieved going faster than sound?
I think it's pretty cool. I'd be terrified back there. Time for a long safety break.
I've read about the big bang and the fist few moments. They talk about how fast the universe expanded. That was faster than light in those first few minutes. Supposedly. What was is? Was there resistance? I think the Higgs Boson field sets on top of another field than has no resistance or maybe encourages or accelerates movement like a vacuum cleaner placed in front of something.
I'm also wondering about Plank's Constant. We can measure Planks constant, but does it change with different types of light. If light is shining on a train, going the speed of light, is that light going faster than light? Or is Higgs Boson the reason that light goes the constant speed it goes? Does the HB also limit the speed of all things? But, if the speed of light could be sped up, would Planck's Constant decrease? Just like objects approaching the speed of light compress and decrease in size?
I'm thinking that if there is some type of wave or field that is capable of faster than light, the key is a perfect observation of a supernova. My theory is that there is a field that is faster than light and it will be observable by watching the total light bulb of a SuperNova. I think that some effect of the explosion will travel/ripple a faster than light field. This will cause objects and dust to glow (give off photons) far far away from the star, (on the edge of the star system, in the Oort Cloud region) before the actual explosion ever reaches that distance. This might be why Super Nova are thought to be so bright. We might observe more light than just the light of the star exploding. Seeing this material light up just after a stellar explosion will be proof of a new field and pave the way for faster that light travel. I call it the Wild Field, it will be where time and distance are irrelevant. And traveling in this field is how we will get to other stars and even galaxies. It has to be true, we can't be just stuck here in this little solar system forever and ever.
I think this is interesting because this bike comes near a place where the simplistic level of Newtonian physics (which I am told is really the elementary school of physics) that most of us use from day to day just isn't enough to describe the material needs at this level.
There is no real wind resistance and they could not even speed up their own weight. Ridiculous stupid to call this bicycle world speed record.
Yeah its not solely pedal powered, but it take immense skill to keep a bike stable at that speed. Imagine falling at over 100mph on a bicycle, it would be insane. Yeah people on motorcycles go that fast all the time, but this is on something you are actively pedaling, not powered by motor.p
Let that sink for a moment...
Not many people would do that, even WC level...
Pinkbike, "hold my beer."
Sure there is drafting involved but I dare say that none of the tough talking little pricks on this website would have the balls to do 200 km/h on a bike, let alone almost 300 km/h!
Have a look at the actual video of the run with the salt and shit flying everywhere. It's hardcore and the margin for error is minuscule at that speed. Amazing effort.
When in doubt, air it out.
these are motor cycle wheels so I reckon they need to be stiff an very strong. To make a 29er wheels with the equivalent strength an stiffness would more than likely weigh way too much an possibly have too much rolling resistance ???
I'll put that down as "climb like a goat"
"Project Speed - Denise Mueller Sets Women's Land Speed World Record"
www.youtube.com/watch?v=iz8_wH3dZ-w
www.youtube.com/watch?v=X-FC1wMPu8Q
m.youtube.com/watch?v=iRGcrN41cj8
(sarcasm btw)
Challenge accepted