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Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

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Old 05-05-12, 10:32 AM   #1
Crappymonkey
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This doesn't look very safe




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Old 05-05-12, 11:20 AM   #2
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First question is whether it's real or fake. 90 kmph is pretty fast (56 mph). In a 52x11 gear, he'd need a cadence of 150 which isn't impossible. It looks like he's in his highest gear anyway. Could be legit. If it is, then the guy's got guts.
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Old 05-05-12, 11:51 AM   #3
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Well, that 18-wheeler is going to do a better job holding his line than a bunch of cat 5s in the caboose of the pack.
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Old 05-05-12, 12:06 PM   #4
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Looks legit enough, but for the first 20 seconds the rider isn't even pedaling. Also have to consider that the video car may have been accelerating to the 90kph not holding steady at that speed.
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Old 05-05-12, 12:10 PM   #5
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Motorpacing...

Partner said he and a few of his racing mates got busted by the cops for drafting a truck on the highway and were pacing the rig at 50 mph.

The cop asked why they were doing something that was so unsafe and his reply was "The truck driver refused to let us pass."
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Old 05-05-12, 12:11 PM   #6
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First question is whether it's real or fake. 90 kmph is pretty fast (56 mph). In a 52x11 gear, he'd need a cadence of 150 which isn't impossible. It looks like he's in his highest gear anyway. Could be legit. If it is, then the guy's got guts.
Easily real. I'm no pro level cyclist but I periodically latch onto the draft of midsized work trucks (F350 style) and easily hold 50mph. The draft really pulls you along quite easily when close and at a smooth speed.
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Old 05-05-12, 12:20 PM   #7
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Needless to say... it is a good way to get yourself killed.

Was driving some weeks ago and in coming up behind a big truck checked the computer to see that the fuel consumption on the car dropped by nearly 50% when we were at a safe distance (2 second rule).

Used to ride a motorcycle and when you came up behind trucks you have to be very aware that you can get pulled right into them when you enter their trail and that when you pull out from that you need to be ready to get hit by a wall of air.
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Old 05-05-12, 12:20 PM   #8
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Real or not, this is why paramedics have jobs.
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Old 05-05-12, 12:56 PM   #9
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Needless to say... it is a good way to get yourself killed.

Was driving some weeks ago and in coming up behind a big truck checked the computer to see that the fuel consumption on the car dropped by nearly 50% when we were at a safe distance (2 second rule).
+1
I have drafted buses, just because they were there and I was behind them and there were cars behind me, and I didn't have to be that close to them to benefit from the draft.
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Old 05-05-12, 01:09 PM   #10
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Hehehe... we used to do that very often when kids ...

Once you sprint from 40 km/h to 65 ish to catch the draft you are done because u get like into a bubble and the truck is just pulling you... 100 km/h that was nice to see... the guy goes like with 53x11 maybe? The only way to get really fast.

By experience, if you want to do this and your handling abilities just sucks or your bike handles super slow dont try this because at the 1st pot hole you will end up in the ground. We used to have fun doing bunny hops to jump the holes. A team member pass us behind a truck, like 500 meters ahead he was hit by a big rock the truck run over, hit him in the front wheel, he flew like superman to the side of the road and the only thing we saw was a cloud of dust. We stopped he was fine, nothing broken and the bike was fine too but damm, that was scary... I thought had died... just like in a cartoon tho.. tragic and comical at the same time
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Old 05-05-12, 01:09 PM   #11
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Needless to say... it is a good way to get yourself killed.

<snip> you have to be very aware that you can get pulled right into them when you enter their trail and that when you pull out from that you need to be ready to get hit by a wall of air.
Seriously. Not advisable although fun for short spells on arrow strait, smooth roads as long as one's bike handling skills are above average. The real kick in the pants for most peeps is coming out of the draft and hitting the "wall" as you say. Better for most folks to fade back than to dart out the side but that usually ticks off the driver behind.

Oh, and cardinal rule #1 in my book is NEVER take your eye out of the view of the brake lights. The impact with the truck doesn't hurt nearly as much as the impact with the ground following the impact with the truck. <<shudder>>
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Old 05-05-12, 01:15 PM   #12
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+1
I have drafted buses, just because they were there and I was behind them and there were cars behind me, and I didn't have to be that close to them to benefit from the draft.
There is a few long stretches of road here with long breaks that are also bus lanes and have drafted those buses at 70 kmh with ease.

Was always nice in the winter to get in behind the trolleys on my commute on bus / bike only lanes as even though I was not tearing it up, it kept one toastier and with trolleys there was no exhaust to deal with.
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Old 05-05-12, 01:17 PM   #13
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Real or not, this is why paramedics have jobs.
And morticians
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Old 05-05-12, 02:07 PM   #14
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i have found that i don't have to be directly behind following traffic to benefit from their draft. i can get a little draft even when in the bike lane.
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Old 05-05-12, 03:06 PM   #15
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Neat little story about something very similar. Buddy of mine's father was riding his Goldwing down the highway right behind a truck, couple of car lengths back though. A piece of plywood sucked up off the road surface as the truck went over it on the road. It went into the air and straight into his motorcycle chopping off the top of the windscreen and leaving some seriously nasty scratches and splinters into Johnny's back (his dad, he had ducked down) while passing over him and in the process of taking the backrest completely off the motorcycle.
I personally had a bit of tire tread (gator) come up at me while riding my motorcycle behind an 18 wheeler that darn near took me off the bike. By pure luck it hit my prosthetic leg instead of my real leg or skin, where it most certainly would have severely injured me from the steel belts sticking out.

There is no way in hell I would ride up that close to a big truck again...and that was well further back than this guy drafting.....nuts :shakeshead:
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Old 05-05-12, 10:47 PM   #16
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You have to be close to the truck or the truck wont carry you, you cant draft at 100 km/h being away like 50 feet, if anybody was able to do that we chould have a 1 hour record of 75 km at least...
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Old 05-07-12, 12:01 AM   #17
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I've rear-ended a car before; no thanks.
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Old 05-07-12, 07:15 AM   #18
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Seriously. Not advisable although fun for short spells on arrow strait, smooth roads as long as one's bike handling skills are above average. The real kick in the pants for most peeps is coming out of the draft and hitting the "wall" as you say. Better for most folks to fade back than to dart out the side but that usually ticks off the driver behind.
Smooth roads are key. Biggest risk is not the truck braking. As Hokuloa says, keep your head up, eyes on brake lights, and the truck is not going to out brake you.

Biggest risk is hitting **** in the road. The truck does not call out potholes, and the truck will roll past the pot hole in the middle of the road, that you will bash into.

Last week we were taking pace off an SUV, hit a pothole in the low 30's, destroyed both tires, one broken spoke. Fortunately stayed up right.
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Old 05-07-12, 07:21 AM   #19
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Real or not, this is why paramedics have jobs.
They only have jobs if we crash.
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Old 05-07-12, 07:41 AM   #20
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I've been stupid enough to do that before but I'm smart enough to never do it again. It IS a thrill though for sure.
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Old 05-07-12, 08:05 AM   #21
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I do it in town on roads that I am familiar with, ie without surprise potholes. Plus I choose slow accelerating, slow braking trucks or buses.
There is always a danger of unseen, recent road debris, but I have to admit, getting up to and holding 40-50kph just doesnt happen to me often, unless on a downhill, so it is fun for the short time it lasts.

(touch wood)
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Old 05-07-12, 08:52 AM   #22
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And morticians
Well, if you're going to do that, I can add to the list ad infinitum......bike makers, organ recipients, Youtube...
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Old 05-07-12, 11:37 AM   #23
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First question is whether it's real or fake. 90 kmph is pretty fast (56 mph). In a 52x11 gear, he'd need a cadence of 150 which isn't impossible. It looks like he's in his highest gear anyway. Could be legit. If it is, then the guy's got guts.
150 is definitely possible.
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Old 05-07-12, 12:11 PM   #24
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There's no doubt what the guy is doing is definitely possible. I don't think I've ever broken 50 mph drafting a truck, but I've done high 40's.

The limiting factor wasn't gearing, or power, it was just the only place I've caught them were on roads with 35 mph or 45 speed limits.

It's really not that hard to maintain the speed, the issue is accelerating fast enough to get in the sweet spot before the truck pulls away, which is a matter of catching the timing right.
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Old 05-07-12, 12:28 PM   #25
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Biggest risk is hitting **** in the road. The truck does not call out potholes, and the truck will roll past the pot hole in the middle of the road, that you will bash into.
+1. I broke a wheel (tire stayed inflated) on a car once following too close to a semi. He swerved a little and I didn't notice the 4x4 until too late. I wouldn't want to hit something like that on a bike.

What the rider was doing doesn't take guts as it's not scary unless you start thinking about what ifs.
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