DC Power Stats

[Thug]

Funny how the intensity factors for both BikeMax & Windbreaker were virtually the same.

[bruce]

how is the intensity factor calculated - it would appear that this is what you have to look at to see how hard a ride was (or not).

should be far more accurate than ave. HR.

 

I.F. = NP (normalised/avg power) /  FTP (functional threshold power - power sustainable for 60minutes)

 

So, my NP = 275 watts, FTP = 335 watts therefore IF = 275/335

 

This gives an indication of how close to your threshold you were riding and is the best indication of how hard the ride was physiologically.  This is used to calculate training stress score

 

see http://www.cyclingpeakssoftware.com/power411/defined.asp

 

[bruce]

Another interesting point is that BikeMax's distance and mine are almost identical.  My time is 5:32 and not 5:35 as per WinningTime' date=' Bikemax was even harder done by - 6:05 whereas WinningTime gives 6:11!![/quote']

 

Unless he has his PT stop recording when speed & power not detected - possibly stopped for a puncture / water etc?

 

Cyclingpeaks still gives the correct overall duration.

[bruce]

Funny how the intensity factors for both BikeMax & Windbreaker were virtually the same.

 

Shirkers

[Thug]

 

 

I.F. = NP (normalised/avg power) /  FTP (functional threshold power - power sustainable for 60minutes)

 

So' date=' my NP = 275 watts, FTP = 335 watts therefore IF = 275/335

 

This gives an indication of how close to your threshold you were riding and is the best indication of how hard the ride was physiologically.  This is used to calculate training stress score

 

see http://www.cyclingpeakssoftware.com/power411/defined.asp

 

[/quote']

 

So if we work the figures backwards, then BM's & Windbreaker's FTP was 280 & 270 respectively.

 

So notwithstanding their similar IF's, a difference of 10 watts / hour turned out to be a difference of 36 minutes in time.

 

[Dr. Seuss]

 

this is far more interesting than minkie's minkie in the bath!

 

 

 

 

 

 

[bruce]

 

I.F. = NP (normalised/avg power) /  FTP (functional threshold power - power sustainable for 60minutes)

 

So' date=' my NP = 275 watts, FTP = 335 watts therefore IF = 275/335

 

This gives an indication of how close to your threshold you were riding and is the best indication of how hard the ride was physiologically.  This is used to calculate training stress score

 

see http://www.cyclingpeakssoftware.com/power411/defined.asp

 

[/quote']

So if we work the figures backwards, then BM's & Windbreaker's FTP was 280 & 270 respectively.

So notwithstanding their similar IF's, a difference of 10 watts / hour turned out to be a difference of 36 minutes in time.

 

That's why you need the persons weight, because watts/kg will be more important.

[BikeMax]

 

Funny how the intensity factors for both BikeMax & Windbreaker were virtually the same.

 

Shirkers

 

Thanks Bruce..

 

Joking aside, this gives us a good example of how overall fitness affects the ability to ride at a higher relative intensity for a longer period of time.

 

Bruce has a higher level of overall fitness at present than either myself or WB and this is demonstrated well here.

 

[BikeMax]

 

 

I.F. = NP (normalised/avg power) /  FTP (functional threshold power - power sustainable for 60minutes)

 

So' date=' my NP = 275 watts, FTP = 335 watts therefore IF = 275/335

 

This gives an indication of how close to your threshold you were riding and is the best indication of how hard the ride was physiologically.  This is used to calculate training stress score

 

see http://www.cyclingpeakssoftware.com/power411/defined.asp

 

[/quote']

 

So if we work the figures backwards, then BM's & Windbreaker's FTP was 280 & 270 respectively.

 

So notwithstanding their similar IF's, a difference of 10 watts / hour turned out to be a difference of 36 minutes in time.

 

That's why you need the persons weight, because watts/kg will be more important.

 

The other unknown factor here is how much actual work was done by the rider as part of the team - WB may have sat on the front the whole way and as such done a lot of work for less speed in a weaker team, whereas I may have shared thw work equally and we therefore rode a faster time.

 

[bruce]

Funny how the intensity factors for both BikeMax & Windbreaker were virtually the same.

 

Shirkers

Thanks Bruce..

Joking aside' date=' this gives us a good example of how overall fitness affects the ability to ride at a higher relative intensity for a longer period of time.

Bruce has a higher level of overall fitness at present than either myself or WB and this is demonstrated well here.
[/quote']

 

 

I just had a higher level of motivation - with a couple of young guns on the team I had to show them that there were still a few watts left in these old legs of mine!!

 

Couldn't let CVANC think I was soft now could I??

[BikeMax]

 

this is far more interesting than minkie's minkie in the bath!

 

 

 

 

 

 

 

That's actually a tough call.

 

Bruce's power stats or Minky naked in a bath....

 

[bruce]

 

I.F. = NP (normalised/avg power) /  FTP (functional threshold power - power sustainable for 60minutes)

 

So' date=' my NP = 275 watts, FTP = 335 watts therefore IF = 275/335

 

This gives an indication of how close to your threshold you were riding and is the best indication of how hard the ride was physiologically.  This is used to calculate training stress score

 

see http://www.cyclingpeakssoftware.com/power411/defined.asp

 

[/quote']

So if we work the figures backwards, then BM's & Windbreaker's FTP was 280 & 270 respectively.

So notwithstanding their similar IF's, a difference of 10 watts / hour turned out to be a difference of 36 minutes in time.

 

That's why you need the persons weight, because watts/kg will be more important.

The other unknown factor here is how much actual work was done by the rider as part of the team - WB may have sat on the front the whole way and as such done a lot of work for less speed in a weaker team, whereas I may have shared thw work equally and we therefore rode a faster time.

 

Very true, overall drafting advantage could vary hugely.

[bruce]

this is far more interesting than minkie's minkie in the bath!

That's actually a tough call.

Bruce's power stats or Minky naked in a bath....

 

No brainer!!

[Windbreaker]

The other unknown factor here is how much actual work was done by the rider as part of the team - WB may have sat on the front the whole way and as such done a lot of work for less speed in a weaker team' date=' whereas I may have shared thw work equally and we therefore rode a faster time.
[/quote']

 

Yep I sat at the front for the whole 200km

Seriously, although we were all pretty well matched there were only 8 to start with and 7 of us from about 100km on so it was tough.

[Windbreaker]

I wonder if Saris or Cycleops - whoever it is that owns the firmware in the computer will add a real time power to weight option.

[domenic]

/QUOTE]

The other unknown factor here is how much actual work was done by the rider as part of the team - WB may have sat on the front the whole way and as such done a lot of work for less speed in a weaker team, whereas I may have shared thw work equally and we therefore rode a faster time.

 

Very true, overall drafting advantage could vary hugely.

Don't confuse the issue. Drafting only plays a role if you were to compare the speeds. From a power perspective, what was measured was what was produced.