Nope. Drafting AKA Tailgating is a crime and punishable by a fine. There is a significant increase in risk of harmful injury, property damage, and expensive medical bills when travelling too close, too fast, and on wet roads. I am not an actuary but I imagine that as the size of the peloton increases so does the risk of a larger crash for the man in the middle or the back of the pack.
Ollie: "As a rule of thumb if you're racing draft whenever you can" Important exception: don't draft when crossing the finish line if you want to win the race ... you'll be second in the best case ;P
Could you cover drafting etiquette in a group or even coming up on a group of riders you're not part of? How can you join in without being awkward, if at all?
Drafting is a godsend on a group ride when your doing So true about being number five or six at the back, you really need to get close and low otherwise you work harder. In a long chain you can feel the efficiency drop as you go from 3 to 5 to 7. Definitely drops off.
In the future could you go in to more specifics on how a riders physical size effects the draft please. I am only 170 mm tall and weigh 72 kg and often hear complaints and moaning from the bigger riders that they get no draft riding my wheel. Exactly how much less draft are they getting off me as opposed to a rider of their same size or bigger? Thanks Ollie.
I got to items I’d like a deep dive into. First, does the weight penalty for clip-on aerobars out weigh the aerodynamic benefits (time trials and gravel events)? Second, how much damage does a handlebar bag do to aerodynamics?
What's the protocol if any, in the pro peleton? Is everyone supposed to take a spin in front? Why would anyone take point unless they were about to attack from the front?
And no one measured the heat, if you ever drafted large group or vehicle, it gets really hot really fast if you are pushing the speed to the max or there are hills in the way, so how much does heat reduces your performance and taking that into account what is the perfect position to draft on warm days compared to cold days where you would want to have some heat?
Enjoyed this. Would like to have heard a bit more on the variation of drafting benefit compared to the speed of the group. Do the % reductions in drag(compared to a single rider) remain constant, regardless of the speed of the group🤔?
Riding really close to inexperienced riders can be dangerous, one false move by the rider in front and they can take you down. One trap for newbies is riding straight behind another rider, and they get out of the saddle for what ever reason, and it feels like their bike reverses into you, I always ride slightly off to one side for this reason.
Curious: what is the actual physics phenomenon that reduces the drag when drafting. Is the air behind the front riser more turbulent? Does that reduce air density or just how it flows? Curious to know more about the fluid dynamics that crest the drafting effect. Thanks for the video!
it's a low pressure zone that's the result of something moving through a fluid. The area round the front riser does get more turbulent - depending on the speeds, viscosity and density of the fluid this could actually be classified as "turbulent" (based on Reynolds number), but at lower speeds or higher viscosity it could still be transitional or laminar flow - so not many "eddies" in the flow. In any instance you still get the benefit of the object in front of you because it already did the "work" to push against that section of fluid. Fluid dynamic is serious business with complex math. I am more familiar with the opposite case (moving a fluid in a pipe) from engineering classes, but the principles are similar and we did study motion of objects through air. Fortunately, there are a few of sites describe this with nice animations and graphs .
Is there an advantage for the front rider in having someone behind caused by the rider behind preventing quite such a large area of low pressure or vortex etc behind the front rider? I ask as in NASCAR racing having a car very close behind makes the front car go faster in part due to the car behind 'taking the air' over itself rather than letting the usual huge area of turbulent air and low pressure form.
#gcnTech I just got a SRAM AXS Mullet build on my new Cervelo Áspero 1X 42t front cog ⚙️ it’s rubbing/Scratching Frame as I turn the crank can you have advice on what to do I’m not mechanically inclined?
So is this why drivers tailgate my arse whilst cycling, so they can draft me? Now I understand why, and there was me thinking they did it to intimidate me off the road……silly me 😂😂😁
I don’t think there is any shame being dropped by ex-pros who put out too many watts to keep the unit solid. If Ollie had been included, I think Si would have been beaten far sooner. Their team persuit skills were highly suspect and were more like 4 individuals than a well drilled squad. Manon should have been brought in to drill them properly. She is the one at GCN with those skills in abundance
Too bad the numbers were partly not true 😅 (When cinverting the units on distances, the decimal point shifts. They equate 500cm to 0,5m, which is not correct. Now we can't be sure, what numbers are true.)
@@PsyKeks You are right, I had the same observation as I'm sure others did. However your spelling mistake puts the quality of your contribution in a dim light 😄. Seriously though it's easy to verify the truth since he did reference the study and it's author. I'm going to check it out now for myself 👍
“500cm or half a meter” is that what you say when you get dropped? I was only 1/2 a meter of the back. Reality 500cm or 5 meters 🤣. Is that another 10 points? 😁
I'm pretty sure having a lorry behind you reduces your drag, because I can cruise at 25mph when I'm being chased by a lorry, while I usually cruise between 15-18mph
So WHY is there in pro cycling not a bigger focus on getting a huge rider, like Conor Dunne to have the GC-contender ride behind?? I've never heard about it ever, that oh, Primoz Roglic has a giant domestique to shelter him from the wind, so he saves much more energy until the finish of a stage. Why why why???
When the peloton fills a wide road from edge to edge, doing 60 kph in the run-up to a sprint finish, they must be pushing a lot of air. So what is the effect on those riding at the front? I've always wondered how the same lead-out riders can keep those speeds up for several minutes, so it must be significant.
My favourite is tractor drafting! Always good fun and you get plenty of warning when they are going to do something like brake or turn off as the engine note changes and the whin of the gears changes! Had a couple of amazing tractor rides over the years!
Drafting behind even larger vehicles such as a bus or a semi-trailer can not only reduce your drag to pretty much zero but also (if you’re willing to get close enough) provide you with thrust due to the vortices that are shedding behind in the low-pressure zone creating a suction effect. Just ask Evandro Portela… he managed to draft a semi-trailer on a freeway at 124km/h. Look up “bike draft 124km/h”… just remember, don’t blame me if you try it yourself and end up in a hospital.
Absolutely love getting into the science and maths of cycling. Could you do an episode that actually shows the maths and formulas for the dominant forces? Go a bit deeper for the nerdiest of us? 🤓
Hey Olie. I'm not a native speaker but your numbers are broken somehow or I did miss something. Watch from 7:58 to 8:07. Can you clarify if you talk about wheel to wheel distance of rider to rider distance?
That is why I am in the comment section! My mind is wrinkling! 150cm is 60 inches but only 1/2 a meter???? So thanks for this. And Ollie, this is a great video. Thanks.
I just watched three grown up men having fun with a digger and now Olli with play with plastic bikes and cars. What a great start to a rainy Bank Holiday Monday..!
NERD ALERT: at the end of the video, I guess you are talking about your c(d)*A Ollie, which is the result of the multiplication of c(d), which actually resembles the coefficient of drag, and your frontal area A. A c(d) of 0.19 would be absolutely unheard of in a cycling context, apart from faired recumbents of course. still a great video, thx for all the great content
Always alway always be extra cautious when coming up on a stranger. Keep your distance until you see how steady a pace they carry. I learned this the hard way a long time ago.
Excellent facts! Thanks!!! However, I commute 36,5 km to work, and very seldom find some bike riders…and if some seen, I race to catcht them and overtake them😀😀😀😀😅🚴🏻♀️🚴🏻♀️🚴🏻♀️
Why not a GCN experiment at 40km/h, with everyone riding a distance individually, record their power numbers, and then doing the same run but in a GCN Chain and find out power numbers for 2nd, 3rd, 4th...position (1st position power numbers will also be interesting to see) and compare them with the solo run. It will be interesting to see how different order of biger/smaller riders affect the drafting effect too.
I'd really like to know about extra danger of Covid-19 due to drafting. I'd love to join a group, but I'd like reassurance re: riders' breath/droplets in front of me that I'd be riding through for upwards of x minutes.
One time I was riding home in serious traffic..... I was caught in the middle of the lanes and I instantly felt drag reduce🇰🇪🇰🇪 (pangani to muthaiga descent)
Was this video made just to have an excuse to play with those adorable little cycler toys? Just kidding. Phenomenal video integrating cycling, math and science. Thank you!
If you don't know the people that you are riding with, it's better to leave a little extra room. If you know that THEY know what they are doing, you can close the gap to around 10 cm.
Here is what I need - a wind shield...could be two varieties, road bars, road bars w/ tri bars. It does not need to be overly large like fairings of old, just a small bullet shaped transparent canopy (in orange, lime green like a Mountain Dew bottle, and blue) a rider could use to slip that air around the body much better. Of course its not UCI approved...I'm just riding to the store.
Solo I really like traffic assisted aero. I can get a 5mph boost from a large truck on a large shouldered highway. At a stoplight the truck gathers a large entourage behind it prolonging the effect especially when heavily laden. A crosswind magnifies the effect. Vary the position on the shoulder toward the edge for traffic going the other way. Never push your luck in the traffic area though. Connor is much like a tandem team. He has The power of 2 riders but not twice the frontal area. Reynolds number is also lower than average ,similar to a ship with a longer waterline. Finally the weight and aero drag of the bike are minuscule proportionally to a smaller rider. He must have been a great domestique!
Today I rode my fat bike behind a fast gravel biker with narrow tires. He was terribly upset and didn't want me in his slipstream at all. So the Swabians are really stingy if they don't even want to give you a slipstream! Cursed like a sparrow! 😮 It was probably the frustration of not being faster than me on a fat bike. 😅
Do you draft wherever possible? Or do you always do your turn on the front? Let us know in the comments below!
Go out with local club. Draft normally at the end to not get dropped(Ollie). 5, 5 heart bypasses and overweight for a cyclist I need to draft.
Do I draft? Of course I do I'm 65yrs, duh.
Nope. Drafting AKA Tailgating is a crime and punishable by a fine. There is a significant increase in risk of harmful injury, property damage, and expensive medical bills when travelling too close, too fast, and on wet roads. I am not an actuary but I imagine that as the size of the peloton increases so does the risk of a larger crash for the man in the middle or the back of the pack.
Everyone needs to take their turn, even if it's only for a few minutes
@@charlesjames4194 get a life.
Ollie: "As a rule of thumb if you're racing draft whenever you can"
Important exception: don't draft when crossing the finish line if you want to win the race ... you'll be second in the best case ;P
Unfortunately you have to stay IN the draft to benefit, doesn't work if you get dropped...
This is unfortunate, it's true.
LOL :-D
light job at Ollie big oof
You only get dropped because you are not as good as a rider as the others. Drafting is all in your mind.
Learned that the hard way, never to allow to get dropped as better quit all together if one is on the limit of keeping up already.
Whoever is doing the animations deserves a raise 💷
Could you cover drafting etiquette in a group or even coming up on a group of riders you're not part of? How can you join in without being awkward, if at all?
CFD is fine for Ollie, but when it comes to cm or mm...things get tricky 🤔
Sometimes riding uphill the trucks passing a feel centimeters from my skin actually helps to climb.
Loved this video. Keep on the good work GCN.
olli forgot his science glasses when saying, that 500 cm is a half of a meter, cause with the glasses he wouldnt do this mistake:D
Absolutely fantastic video!🤝🏿
Drafting is a godsend on a group ride when your doing
So true about being number five or six at the back, you really need to get close and low otherwise you work harder. In a long chain you can feel the efficiency drop as you go from 3 to 5 to 7. Definitely drops off.
In the future could you go in to more specifics on how a riders physical size effects the draft please. I am only 170 mm tall and weigh 72 kg and often hear complaints and moaning from the bigger riders that they get no draft riding my wheel. Exactly how much less draft are they getting off me as opposed to a rider of their same size or bigger? Thanks Ollie.
You must have to pedal really fast to keep up with regular-sized riders ¦D
Really interesting video - thank you. I can imagine Ollie’s heart sank a little in the planning meeting when this idea for a video came up…
Ollie playing with the toy car is very funny 😂😂😂
I got to items I’d like a deep dive into. First, does the weight penalty for clip-on aerobars out weigh the aerodynamic benefits (time trials and gravel events)? Second, how much damage does a handlebar bag do to aerodynamics?
1st question is no, they actually tested this on gcn.
I never draft I always ride alone. All my bikes have aerobars. Aerobars are always more aero than drafting
Whoa, the bike changed in the background
Unrelated BUT Ollies laptop is awesome
Dave Stoller got himself and his Masi up to 60 mph riding behind that Cinzano truck....
And, now we know how. Given the stats Ollie provided for riding behind a car or motorbike, imagine how low the drag was behind that Cinzano truck.
As Ollie demonstrated in a past episode, you have to stay in the draft, to take advantage of the draft.
Why do the pros not use a tri spoke wheel anymore?
What's the protocol if any, in the pro peleton? Is everyone supposed to take a spin in front? Why would anyone take point unless they were about to attack from the front?
And no one measured the heat, if you ever drafted large group or vehicle, it gets really hot really fast if you are pushing the speed to the max or there are hills in the way, so how much does heat reduces your performance and taking that into account what is the perfect position to draft on warm days compared to cold days where you would want to have some heat?
Enjoyed this. Would like to have heard a bit more on the variation of drafting benefit compared to the speed of the group.
Do the % reductions in drag(compared to a single rider) remain constant, regardless of the speed of the group🤔?
I thought Dan was the expert on pulling drafts!
@6.12 two tubulars rolled on team car 😉
Riding really close to inexperienced riders can be dangerous, one false move by the rider in front and they can take you down. One trap for newbies is riding straight behind another rider, and they get out of the saddle for what ever reason, and it feels like their bike reverses into you, I always ride slightly off to one side for this reason.
Curious: what is the actual physics phenomenon that reduces the drag when drafting. Is the air behind the front riser more turbulent? Does that reduce air density or just how it flows? Curious to know more about the fluid dynamics that crest the drafting effect. Thanks for the video!
it's a low pressure zone that's the result of something moving through a fluid. The area round the front riser does get more turbulent - depending on the speeds, viscosity and density of the fluid this could actually be classified as "turbulent" (based on Reynolds number), but at lower speeds or higher viscosity it could still be transitional or laminar flow - so not many "eddies" in the flow. In any instance you still get the benefit of the object in front of you because it already did the "work" to push against that section of fluid.
Fluid dynamic is serious business with complex math. I am more familiar with the opposite case (moving a fluid in a pipe) from engineering classes, but the principles are similar and we did study motion of objects through air. Fortunately, there are a few of sites describe this with nice animations and graphs .
you could say something about overlapping wheels, and show some crashes ....
There's a lot of talk in pro triathlon that 10m draft zones are too small for the speeds the pros ride at, any data on distances like that?
When your mistake in metric units is more consistent than the decorations on the wall
Is there an advantage for the front rider in having someone behind caused by the rider behind preventing quite such a large area of low pressure or vortex etc behind the front rider? I ask as in NASCAR racing having a car very close behind makes the front car go faster in part due to the car behind 'taking the air' over itself rather than letting the usual huge area of turbulent air and low pressure form.
Yes. That is why many recumbent bikes have aero tailboxes to clean up the flow behind
Where does one procure those cycling figurines,professor O. ?
What is the dominant resistance below 15 km/hr?
Mechanical resistance of the bicycle and gravity (net of a route.)
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#gcnTech I just got a SRAM AXS Mullet build on my new Cervelo Áspero 1X 42t front cog ⚙️ it’s rubbing/Scratching Frame as I turn the crank can you have advice on what to do I’m not mechanically inclined?
What wall mount is this?
1:35 km/h or sometimes kph, never seen kmph before.
Ollie never got dropped, he just made a conversion error from millimetres to centimetres!
A little bit of a difference there Bridgewood... I thought 150cm felt like a long way to be off a wheel.
So is this why drivers tailgate my arse whilst cycling, so they can draft me?
Now I understand why, and there was me thinking they did it to intimidate me off the road……silly me 😂😂😁
Actually, having something behind you can clean up the air flow and make you more aerodynamic.
Also slamming their horns to cheer you on. Truly inspiring to be on the roads with such support.
Make sure you tell them to take their turn though.
@@taufikabidin412 also clean up your fart? lol
When a car is sat right behind me I ride faster not because of aerodynamics but because I'm absolutely pooing myself.
Oh god yes.
😂
At 300+ ftp while under 80kg ollie is probably stronger than 90%of the "Ollie got dropped" commenters.
No doubt. I have an FTP of 290 but I'm probably 15kg heavier (taller and overweight)
It's all in good fun
I think you're being generous to the commenters.
I don’t think there is any shame being dropped by ex-pros who put out too many watts to keep the unit solid. If Ollie had been included, I think Si would have been beaten far sooner. Their team persuit skills were highly suspect and were more like 4 individuals than a well drilled squad. Manon should have been brought in to drill them properly. She is the one at GCN with those skills in abundance
Not probably, definitely.
Ollie is a brilliant presenter, congrats!
2:42 why are they not wearing helmets
😂 Good point!
@@gcntech Quite shocked in this new world we live in helmet less models,
Brilliant to see all these numbers in a single video!
Too bad the numbers were partly not true 😅 (When cinverting the units on distances, the decimal point shifts. They equate 500cm to 0,5m, which is not correct. Now we can't be sure, what numbers are true.)
YEAH I CAN COUNT, THIS IS AMAZING!
@@PsyKeks they added a caption that Ollie mean millimeters
@@Kimberly_Sparkles Ah, okay. Better than nothing, I guess 😅
@@PsyKeks You are right, I had the same observation as I'm sure others did. However your spelling mistake puts the quality of your contribution in a dim light 😄. Seriously though it's easy to verify the truth since he did reference the study and it's author. I'm going to check it out now for myself 👍
I would like to see you recreate an entire race using only figurines
Ollie really needs to revise his distances for metres, millimetres and centimetres !!!! How many times did he get it wrong today 👨🎓
Yeah. I don't really know which ones were true, now. 😅
“500cm or half a meter” is that what you say when you get dropped? I was only 1/2 a meter of the back. Reality 500cm or 5 meters 🤣. Is that another 10 points? 😁
00:40 connor said , "we have to go without him", and then the bike behind is swapped
ah and then Ollie explained it :(
First the caffeine video. Than this one. I like videos with science behind them. Those are great!!
00:08 'Like a sh*t, pushing through the sea'
Oliver Bridgewood 2021
Best GCN tech video yet! Cool to see a paper from my university make a surprise appearance!
+10 GCN points! Woohoo!
They didn’t accept mine at Tesco. Does anyone have the GCN support hotline?
@@LarsRR 😂
Love the science technical clips. Ollie does a great job explaining just a bout everything. Viewers, you should take notes.
I'm pretty sure having a lorry behind you reduces your drag, because I can cruise at 25mph when I'm being chased by a lorry, while I usually cruise between 15-18mph
Thanks Ollie for making the effort, reading all the studies. Great video. This clip gave me some new information. Much appreciated👍
Nice to have a video that’s actually teaching us something, rather than selling us something for a change. 👍
Mom: Don't play in traffic!
Me: But Ollie said it's more aero.
My heart went out to Ollie when he referenced to when he was dropped 😭
Amazing how many never stick their nose in the wind. We the lone wolves are not afraid.
I was drafted once...
And ended up in Bosnia, Irak and Afghanistan !
So WHY is there in pro cycling not a bigger focus on getting a huge rider, like Conor Dunne to have the GC-contender ride behind?? I've never heard about it ever, that oh, Primoz Roglic has a giant domestique to shelter him from the wind, so he saves much more energy until the finish of a stage. Why why why???
Respect to Tim Declercq, the guy who is always in the front of the peleton dragging it along
When the peloton fills a wide road from edge to edge, doing 60 kph in the run-up to a sprint finish, they must be pushing a lot of air. So what is the effect on those riding at the front? I've always wondered how the same lead-out riders can keep those speeds up for several minutes, so it must be significant.
Drafting while swimming or running is definitely a thing. In the water, you can ride the wake of a swimmer in front of you but off to the side.
It works with air too - it's why geese etc fly in a large V formation
My favourite is tractor drafting! Always good fun and you get plenty of warning when they are going to do something like brake or turn off as the engine note changes and the whin of the gears changes! Had a couple of amazing tractor rides over the years!
Haha Strava segments are getting smashed all over due to tractor drafting!
Drafting behind even larger vehicles such as a bus or a semi-trailer can not only reduce your drag to pretty much zero but also (if you’re willing to get close enough) provide you with thrust due to the vortices that are shedding behind in the low-pressure zone creating a suction effect. Just ask Evandro Portela… he managed to draft a semi-trailer on a freeway at 124km/h. Look up “bike draft 124km/h”… just remember, don’t blame me if you try it yourself and end up in a hospital.
Absolutely love getting into the science and maths of cycling. Could you do an episode that actually shows the maths and formulas for the dominant forces? Go a bit deeper for the nerdiest of us? 🤓
Great vid. Ollie! Thanks for bringing all that info together. And thanks graphics dept. for using fixies in the animation! Appreciate the love... 😉
Hey Olie. I'm not a native speaker but your numbers are broken somehow or I did miss something. Watch from 7:58 to 8:07. Can you clarify if you talk about wheel to wheel distance of rider to rider distance?
He means millimetres, and it's wheel to wheel distance should be "between 150mm and 500mm from your front wheel to their rear wheel"
What @HattMarris said!
That is why I am in the comment section! My mind is wrinkling! 150cm is 60 inches but only 1/2 a meter???? So thanks for this. And Ollie, this is a great video. Thanks.
@@MattH6565 Which you’d normally refer to as 15 cm and 50 cm. Millimetres are mainly used for the really small and/or detailed stuff (-:
white orbea at start then a metallic blue bike - quick respray by Manon?
Anyone here after reading wind breaker?
Oli my dude, you look sharp with the glasses man.
Ollie means millimetres 😏
The Mavic service Peugeot 504 model is a thing of beauty
RGT and Zwift should use your video to improve their drafting physics. (Don’t know for other apps).
I just watched three grown up men having fun with a digger and now Olli with play with plastic bikes and cars. What a great start to a rainy Bank Holiday Monday..!
Very informative, thanks Ollie!
Love when Ollie goes full scientist!
NERD ALERT: at the end of the video, I guess you are talking about your c(d)*A Ollie, which is the result of the multiplication of c(d), which actually resembles the coefficient of drag, and your frontal area A. A c(d) of 0.19 would be absolutely unheard of in a cycling context, apart from faired recumbents of course.
still a great video, thx for all the great content
Always alway always be extra cautious when coming up on a stranger. Keep your distance until you see how steady a pace they carry. I learned this the hard way a long time ago.
"How close should you follow?" How much do you trust the rider in front?
Excellent facts! Thanks!!! However, I commute 36,5 km to work, and very seldom find some bike riders…and if some seen, I race to catcht them and overtake them😀😀😀😀😅🚴🏻♀️🚴🏻♀️🚴🏻♀️
Um...fish school for “Safety in Numbers”, not for “Aerodynamic Advantage”. I get your point, but the analogy doesn’t swim...
Hi guys. I'm from Brazil. Where can I buy these little miniature cyclists?
Drag is proportional to the SQUARE of the speed, acceleration is proportional to the cube of the speed...
Why not a GCN experiment at 40km/h, with everyone riding a distance individually, record their power numbers, and then doing the same run but in a GCN Chain and find out power numbers for 2nd, 3rd, 4th...position (1st position power numbers will also be interesting to see) and compare them with the solo run. It will be interesting to see how different order of biger/smaller riders affect the drafting effect too.
I'd really like to know about extra danger of Covid-19 due to drafting. I'd love to join a group, but I'd like reassurance re: riders' breath/droplets in front of me that I'd be riding through for upwards of x minutes.
One time I was riding home in serious traffic..... I was caught in the middle of the lanes and I instantly felt drag reduce🇰🇪🇰🇪 (pangani to muthaiga descent)
Bike draft 124km/h youtube search. No helmet, etc.
Was this video made just to have an excuse to play with those adorable little cycler toys? Just kidding. Phenomenal video integrating cycling, math and science. Thank you!
If you don't know the people that you are riding with, it's better to leave a little extra room. If you know that THEY know what they are doing, you can close the gap to around 10 cm.
Here is what I need - a wind shield...could be two varieties, road bars, road bars w/ tri bars. It does not need to be overly large like fairings of old, just a small bullet shaped transparent canopy (in orange, lime green like a Mountain Dew bottle, and blue) a rider could use to slip that air around the body much better. Of course its not UCI approved...I'm just riding to the store.
Curious, what's your gap on training roads folks? I aim for 10-12 inches or so (300 Ollie cm's.)
Great to see all of the different situations on the road taken into account. Fantastic video very informative
2 min mark: resistance goes up velocity squared, not cubed.
Thank god it’s wasn’t just me.
Maybe he was referring to the power needed to overcome the aerodynamic drag, which is proportional to velocity cubed?
@@nayjames123 I assumed Ollie meant this
How much do you save by holding on to a car whilst being pulled up a climb, like the Poggio for instance? asking for a French friend.
Yeah, cancellera had some other worldly accelerations. And unexplained bike changes, too. Great example ollie.
Solo I really like traffic assisted aero. I can get a 5mph boost from a large truck on a large shouldered highway. At a stoplight the truck gathers a large entourage behind it prolonging the effect especially when heavily laden. A crosswind magnifies the effect. Vary the position on the shoulder toward the edge for traffic going the other way. Never push your luck in the traffic area though. Connor is much like a tandem team. He has The power of 2 riders but not twice the frontal area. Reynolds number is also lower than average ,similar to a ship with a longer waterline. Finally the weight and aero drag of the bike are minuscule proportionally to a smaller rider. He must have been a great domestique!
Today I rode my fat bike behind a fast gravel biker with narrow tires. He was terribly upset and didn't want me in his slipstream at all. So the Swabians are really stingy if they don't even want to give you a slipstream! Cursed like a sparrow! 😮
It was probably the frustration of not being faster than me on a fat bike. 😅
Does the SWIFT system account for drafting. Or are the engineers working on this