roll test inline vs bicycle

[fierocious1]

Anyone done a roll test for this? Straight line, no turning....

[kufman]

There are lots of variables here. What kind of bike? What kind of surface? How much starting speed?

I am not sure what there is to gain from this experiment?

[fierocious1]

Originally Posted by kufman

There are lots of variables here. What kind of bike? What kind of surface? How much starting speed?

I am not sure what there is to gain from this experiment?

Curiosity mostly. Typical smooth outdoor skate surface. Midrange road bike. Speed at 20 mph. 120 psi tires, whatever the upper limits is now.
110 mm wheels of whatever rolls the best,

[Roto]

For an "apples to apples" comparison should the skater do this roll test balanced on one skate, and that one skate should have the two middle wheels removed?

Just something to consider...

[phicoh]

Originally Posted by fierocious1

Curiosity mostly. Typical smooth outdoor skate surface. Midrange road bike. Speed at 20 mph. 120 psi tires, whatever the upper limits is now.
110 mm wheels of whatever rolls the best,

At 20 mph, it is not a roll test, it is an air resistance test.

[fierocious1]

Originally Posted by Roto

For an "apples to apples" comparison should the skater do this roll test balanced on one skate, and that one skate should have the two middle wheels removed?

Just something to consider...

Both feet on the ground

[fierocious1]

Originally Posted by phicoh

At 20 mph, it is not a roll test, it is an air resistance test.

It could be done at less than 10. Mainly concerned with rolling resistance.

[cass38a]

Originally Posted by fierocious1

Anyone done a roll test for this? Straight line, no turning....

Yes, not in any controlled manner, but the bike wins

I rode my mountain bike with slicks over a section of road where I have skated and it rolled way better. guessing a race bike would be even better.

[fierocious1]

Originally Posted by cass38a

Yes, not in any controlled manner, but the bike wins

I rode my mountain bike with slicks over a section of road where I have skated and it rolled way better. guessing a race bike would be even better.

Thanks Cass. Just what I wanted to know.

[slowsk8]

Seems down hill is where skates pass bikes more often, we can get in a better "tuck" at least I could when I was a bit younger.
But it has a lot to do with who has the most "fear" or lack there of.
Most I ever hit on my skates was 40 mph, most on my bike was 40 mph.
Felt better on the skates, on the bike I kept thinking "flat tire???"
And, I have no plans to try it again.

[fierocious1]

I do wonder though just how much wind resistance a road bike tire would generate. I know that the newer aero wheels help, just how much?

[alfathor]

I have an old video somewhere, skate against bicycle on 100m ... I will find it and show you.
It was filmed 15 years ago at the World Inline Cup of Rennes sur Roulettes (FRA).

[kufman]

On a perfectly smooth surface, the rolling resistance between the two probably isn't much different. The biggest difference is the efficiency at which you propel yourself along. The bike wins in that category.

[PBLsQuad450]

Fabulous weather today in Jersey and I was skating early and smoking bikes... I don't get it? I know, with relatively equal operators, bikes win, but still, they are machines with an effort multiplier effect? And gears and brakes and steering... Serious cyclist I can't deal with, but everyone else is the rabbit thing at the dog races and I am the greyhound. I just can't wrap my head around how this is possible? Again, the average cyclist, but I break away, today even on my favorite climb? I'm no machine, just a dude with wheels attached to my feet by medieval torture devices... I'm not even a good skater? With their giant wheels and mechanics and the like, they should eat my lunch? What's up?

[slowsk8]

Originally Posted by PBLsQuad450

Fabulous weather today in Jersey and I was skating early and smoking bikes... I don't get it? I know, with relatively equal operators, bikes win, but still, they are machines with an effort multiplier effect? And gears and brakes and steering... Serious cyclist I can't deal with, but everyone else is the rabbit thing at the dog races and I am the greyhound. I just can't wrap my head around how this is possible? Again, the average cyclist, but I break away, today even on my favorite climb? I'm no machine, just a dude with wheels attached to my feet by medieval torture devices... I'm not even a good skater? With their giant wheels and mechanics and the like, they should eat my lunch? What's up?

They didn't know they where racing?

[eduardoritos]

http://www.youtube.com/watch?v=nuz_PotUrH8

Our world record holder Ioseba Fernandez, vs international pro biker Pablo Urtasun, 200 mts of linear track, not totally flat (whit a little climb).

PD: don't try understandig what gilr talk, is basque languaje, not spanish.

[phicoh]

Originally Posted by PBLsQuad450

Fabulous weather today in Jersey and I was skating early and smoking bikes... I don't get it? I know, with relatively equal operators, bikes win, but still, they are machines with an effort multiplier effect? And gears and brakes and steering... Serious cyclist I can't deal with, but everyone else is the rabbit thing at the dog races and I am the greyhound. I just can't wrap my head around how this is possible?

In my experience, there is a big difference in power output between just a bit of peddling on a bike and actually making an effort. At low speeds, bikes are a lot more efficient than skates but you can easily compensate by making an effort.

Even when you are not really pushing, you are generating a lot more power.

[evilzzz]

For people obsessed with bike vs skate, howabout doing a Bike vs Skate heart rate BPM test..
this should tell you something pretty conclusive about how hard you have to work on skates compared to being on a bike.

[speedysktr]

Originally Posted by PBLsQuad450

Fabulous weather today in Jersey and I was skating early and smoking bikes... I don't get it? I know, with relatively equal operators, bikes win, but still, they are machines with an effort multiplier effect? And gears and brakes and steering... Serious cyclist I can't deal with, but everyone else is the rabbit thing at the dog races and I am the greyhound. I just can't wrap my head around how this is possible? Again, the average cyclist, but I break away, today even on my favorite climb? I'm no machine, just a dude with wheels attached to my feet by medieval torture devices... I'm not even a good skater? With their giant wheels and mechanics and the like, they should eat my lunch? What's up?

For whatever reason, this reminds me of that episode of Seinfeld where
Kramer was bragging about how well he was doing at karate class...



...until they found out he was in a kids class.


Have fun with it, but keep it real. The vast number of cyclists compared to skaters virtually guarantees that the "average" cyclist is out for a Sunday stroll on their bike compared to some one wearing speedskates who is typically above average in skill and speed compared to the "average" skater. Everyone enjoys a little smackdown on the trail every once in awhile, but try to remember the times you got spanked as well. Do you think people in runners forums make fun of passing the pokey skaters?

[slowsk8]

Originally Posted by speedysktr

Do you think people in runners forums make fun of passing the pokey skaters?

Ah yes, I remember doing a 10K and about half way got passed by a runner. thought oh oh better pick it up. After I passed him again I found out he was one of the 5K runners and had just made the turn on to the last half of the 10K route. Had me worried for awhile.