measuring w/kg

JimboPlob

Just a very quick question. When people refer to w/kg, does that include the weight of bike + rider or just rider?

Don't suppose people now what strava uses either?

Thanks

Pross

Strava estimates on the combined weight. Not sure about how it is properly measured but I would assume the same.

ric/rstsport

Scientifically speaking, when people talk about power to *mass* ratio they mean the power (over a specific duration) divided by the (naked) mass of the athlete (only).

If you look at tables we've generated or others (e.g. Trainingpeaks), it's power to (naked) mass

Ric

doyler78

Ric/RSTSport wrote:

Scientifically speaking, when people talk about power to *mass* ratio they mean the power (over a specific duration) divided by the (naked) mass of the athlete (only).

If you look at tables we've generated or others (e.g. Trainingpeaks), it's power to (naked) mass

Ric

Ric, Have you a link for those?

ric/rstsport

not just yet, but they may appear on our new website which is currently being worked on

doyler78

Ric/RSTSport wrote:

not just yet, but they may appear on our new website which is currently being worked on

Ok thanks. Look forward to seeing them if you do put them up

nammynake

Ric/RSTSport wrote:

Scientifically speaking, when people talk about power to *mass* ratio they mean the power (over a specific duration) divided by the (naked) mass of the athlete (only).

If you look at tables we've generated or others (e.g. Trainingpeaks), it's power to (naked) mass

Ric

Don't start confusing people with mass/weight definitions! Power:Mass or Power:Weight measure exactly the same thing, albeit on a different scale (the difference being a factor of 9.81). Unless you're comparing athletes under differing gravitational fields?

sungod

this is quite comprehensive, it includes a chart of typical p:w for various durations/categories

http://americanroadcycling.org/articles ... egoryTable

Alex_Simmons/RST

nammynake wrote:

Ric/RSTSport wrote:

Scientifically speaking, when people talk about power to *mass* ratio they mean the power (over a specific duration) divided by the (naked) mass of the athlete (only).

If you look at tables we've generated or others (e.g. Trainingpeaks), it's power to (naked) mass

Ric

Don't start confusing people with mass/weight definitions! Power:Mass or Power:Weight measure exactly the same thing, albeit on a different scale (the difference being a factor of 9.81). Unless you're comparing athletes under differing gravitational fields?

We refer to mass rather than weight because weight implies a concern only with gravitational forces. Use of mass refers to forces relevant for a cyclist including those for which gravity isn't a factor (e.g. changes in kinetic energy).

napoleond

It doesn't matter either way, as mine will always be higher than anypne elses's by around 0.6.

Herbsman

NapoleonD wrote:

It doesn't matter either way, as mine will always be higher than anypne elses's by around 0.6.

So you have a threshold power to weight ratio of 11.6?

napoleond

No, it's just gone up again, I've just had a massive poo.

kev77

NapoleonD wrote:

No, it's just gone up again, I've just had a massive poo.

Ha ha, South Cheshire humour!

Love it!

Herbsman

NapoleonD wrote:

No, it's just gone up again, I've just had a massive poo.

So how much more than my threshold power to weight ratio of 11 is yours now then? Bearing in mind I had eaten a fuckload of bread dipped in olive oil, and had downed a few litres of beer before I weighed myself. I have long hair which was wet at the time. I was also wearing four layers of clothing, and had been standing out in heavy rain for quite some time.

mattshrops

Herbsman wrote:

NapoleonD wrote:

No, it's just gone up again, I've just had a massive poo.

So how much more than my threshold power to weight ratio of 11 is yours now then? Bearing in mind I had eaten a fuckload of bread dipped in olive oil, and had downed a few litres of beer before I weighed myself. I have long hair which was wet at the time. I was also wearing four layers of clothing, and had been standing out in heavy rain for quite some time.

Wow you sound like quite a catch for some lucky fella

RChung

sungod wrote:

this is quite comprehensive, it includes a chart of typical p:w for various durations/categories

http://americanroadcycling.org/articles ... egoryTable

Holy cow. I can't stop reading this.

Alex_Simmons/RST

RChung wrote:

sungod wrote:

this is quite comprehensive, it includes a chart of typical p:w for various durations/categories

http://americanroadcycling.org/articles ... egoryTable

Holy cow. I can't stop reading this.

Cycling performance simplified. Holy Cow indeed.

What an almighty load of Holy Crapola. Although to be fair, I couldn't get past the first half dozen sentences to really find out how bad it was.

napoleond

Alex_Simmons/RST wrote:

RChung wrote:

sungod wrote:

this is quite comprehensive, it includes a chart of typical p:w for various durations/categories

http://americanroadcycling.org/articles ... egoryTable

Holy cow. I can't stop reading this.

Cycling performance simplified. Holy Cow indeed.

What an almighty load of Holy Crapola. Although to be fair, I couldn't get past the first half dozen sentences to really find out how bad it was.

Errrrm.

WTF is that?

FORUM EXPERT

Just get a V meter and all is solved!!!!!!!!