Watts vs Speed

[Garfield2010]

In the gym I get a speed of around 32km/hour and watts of around 160 when riding a moderate pace.

 

What will this mean on the open road if I ride alone (time trial) in terms of kilometres per hour?

[AndreZA]

In the gym I get a speed of around 32km/hour and watts of around 160 when riding a moderate pace.

 

What will this mean on the open road if I ride alone (time trial) in terms of kilometres per hour?

 

It will mean you're traveling at 32km/hr and produce 160kw.

 

Okay, there's the door. It's Friday anyway.

[Garfield2010]

Thanks for clearing that up Mampara!! You probably studied physics?

[Gravity]

hahahaha.

that was funny.

[Gravity]

i suppose there will be a formulae to calculate the effect of wind resistance.

and tire frictional resistance.

 

just a question what kind of watts do track sprinters put out?

like what is that brit guy with LOTR dwarves for legs put out.

[Garfield2010]

I guess you are referring to a certain Mr Cavendish........

 

Come on guys... what speeds to you do and what does your watt metres say. Most guys have all this cool gear etc...

[fandacious]

In the gym I get a speed of around 32km/hour and watts of around 160 when riding a moderate pace.

 

What will this mean on the open road if I ride alone (time trial) in terms of kilometres per hour?

 

it means your resistance on the spin bike is low. In real world conditions you'd need to push ABOUT 220-240 watts to keep a sustained avg speed of 32km/h

 

obviously wind, your weight etc etc all play a role, but 160watts is not very much

[Gravity]

No i was talking about Chris Hoy............

that guy has nuclear fusion plants in there somewhere.

http://www.cyclingweekly.co.uk/imageBank/c/Chris%20Hoy%20legs.jpg

and he is a scot

[Garfield2010]

I tend to disagree.... If I look at my normal speeds when riding I get 35km/hour but thats in a bunch with the same amount of effort then in the gym......

 

Will wind and tyre resistance really decrease speeds by 5km/hour?

 

That is exactly why I am aking this question.

[KaKa]

i don't have a watt meter so i am not most guys

[fandacious]

I tend to disagree.... If I look at my normal speeds when riding I get 35km/hour but thats in a bunch with the same amount of effort then in the gym......

 

Will wind and tyre resistance really decrease speeds by 5km/hour?

 

That is exactly why I am aking this question.

 

yeah sure - in a bunch you can coast along. I should have been more specific. If you get on your bike and go ride by yourself, you're not gonna get anywhere at 160watts

 

Your energy used riding in a bunch is ABOUT 30% less than if you were riding solo.

 

I'm using averages here, but for purposes of discussion they're close enough to give you a good idea

[Gravity]

you cannot use bunch riding in this query

 

so i would say most certainly

 

Like in CPT when the northwester blows even the lightest breeze it makes it much tougher, due to the density of the air.

[LeTurbo]

Aha! I like it. So I'm actually a 30% better cyclist than you woesies who get into pelotons, because I ride my races solo. PPA, I want a re-seeding!

[fandacious]

Aha! I like it. So I'm actually a 30% better cyclist than you woesies who get into pelotons, because I ride my races solo. PPA, I want a re-seeding!

 

being dropped off the back of the bunch doesn't count

 

its all very subjective tho... 30% saving or not, its still sometimes fkn hard to hang onto a bunch

[Gravity]

i am the master of pulling too hard at the front, blowing , and then not being able to keep up.

Thanks for coming....bye bye.

Edited December 10, 2010 by Gravity

[Garfield2010]

Thanks

 

I will test my 160 watts next week in the Ultra Triathlon...........