SUBWAY Pro Cycling's elite National Time Trial Champion Paul Odlin continued his fine form against the clock lowering the Christchurch Time Trial Association's 16 kilometre record by two seconds on Tuesday night.

Odlin recorded 19 minutes and 40 seconds on the Tai Tapu course, taking two seconds off Michael Vink’s record set in 2010. Racing has only resumed on the Tai Tapu course this summer after the September earthquakes caused damage to the road making racing not possible.

Odlin was very happy to lower the record, saying he was keen to lower it even further.

“It was a really hard effort coming back into the wind,” Odlin said. “But I've got the bug now and I'm keen to lower this time substantially, and so is Mike (Vink).”

Average power, whatdyareckon, 800W?

mfw wrote::o
Average power, whatdyareckon, 800W?

No . . . . 350W if that. 5 watts per kg would probably do it . . . .

800 watts for 20 minutes is super human.

430W-440W Average

W/kg would have to be high 5s for a 20min TT. taken from the profiling tables in training and racing with a power meter

How much does he weigh?

I was under the impression W/kg meant sfa for flat TT's?

loosely, weight = size= aerodymanics.
data taken to make the profiling tables is taken from top performances in each cat. But yes top TT guys are usually quite solid. except contador, armstrong, evans

XCrazy wrote:I was under the impression W/kg meant sfa for flat TT's?

sort of . .

Head wind could change that as "typically" bigger units are less effected or have the ability to push through a head wind. well that is my experience anyway.

If an 83kg rider was to push 474 watts (5.71 per kg) for 20 minutes would they break the record?

A 73 kg rider would only have to develop 424 watts / 20 minutes to ride the same time.

W/kg pretty meaningful.

Since kg is not directly proportional to area would watts / sqrt(weight) give better comparisons?

20min 16km could be done at a little under 5w/kg by a 70kg aerodynamically gifted person (ie drag not far off Levi or DZ). I have only set up one person with that level of giftedness but she doesn't have the power.

Or for me it would take 4.3w/kg (based on smooth, flat road and my best level of drag).

OTOH, the 83kg rider would need 474w if they had a middle of the road triathlon position.

Watts / mass^(2/3) has been used as a scaling factor for comparison.

Kiwicyclo wrote:

XCrazy wrote:I was under the impression W/kg meant sfa for flat TT's?

sort of . .

Head wind could change that as "typically" bigger units are less effected or have the ability to push through a head wind. well that is my experience anyway.

If an 83kg rider was to push 474 watts (5.71 per kg) for 20 minutes would they break the record?

A 73 kg rider would only have to develop 424 watts / 20 minutes to ride the same time.

W/kg pretty meaningful.

Whats the greatest resistance on a flat TT tho'? Wind Resistance or Gravity?

thekiwi wrote:

Kiwicyclo wrote:

XCrazy wrote:I was under the impression W/kg meant sfa for flat TT's?

sort of . .

Head wind could change that as "typically" bigger units are less effected or have the ability to push through a head wind. well that is my experience anyway.

If an 83kg rider was to push 474 watts (5.71 per kg) for 20 minutes would they break the record?

A 73 kg rider would only have to develop 424 watts / 20 minutes to ride the same time.

W/kg pretty meaningful.

Whats the greatest resistance on a flat TT tho'? Wind Resistance or Gravity?

Rumour was Paul averaged 424w at Elite nats TT and MV high teens..that to do 40km in 49 mins. Conditions/wind alter power requirements subtancially as MV recorded exactly the same time as the year before and yet averaged 30w more this year. So I am a little cynacle about graphs and formulas...IMO they are a guide..not absolute??!! The fastest guy between point A and Point B always wins irrespective of power LOL

Or as the saying goes 'bike racing is not a maths problem'
While the formulae are very accurate (movement is an easily modelled physics problem), the numbers are only an aid to understanding.
From the weather data I have it should have taken 15w more to go the same speed this year. Which means that either the weather data is inaccurate, or (perish the thought) the model has failed or something else has changed - road surface or his equipment/position. Even having an older chain that hasn't been properly cleaned can make a difference of a few watts at that level.