RunBrettRun

Ironman Australia 2017

406 posts in this topic

well...I'm 74kg and looking at 180w which is just under 70% ftp. That's the target for a 6hour'ish ride.

So much can change it, hot weather, cold weather, wind, rain, flats etc. I can only control the watts :)

Mind you - my ride split for Ballarat 70.3 was 2:30, so guessing sub 6 isn't out of the question on a good day.

 

 

I've raced at about that weight and doubt I would have been over 180W. That worked out at 5:40ish.

 

180w Ave got me 5:41 and 5:42 at 84kg

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The question everyone wants to know is when will Rog come out of retirement and have another crack at ironman?

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When my children are a bit older.

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Â

I rode an NP of 170w last year and did it in 5 and a half hours at 70kg. Can anyone say "Stages under-reads your power".Â

Yep

All stages under read your power

But that doesn't matter as long as it's consistent

 

I ride 4-53 at IM franga of 173 watts

64kgs

Stages PM at the time

Which was consistent 20 watts out

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When my children are a bit older.

Well that's never gunna happen if you keep on popping them out

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Yep

All stages under read your power

But that doesn't matter as long as it's consistent

 

I ride 4-53 at IM franga of 173 watts

64kgs

Stages PM at the time

Which was consistent 20 watts out

 

Yeah but that course was 3/4 downhill. So you can't compare that with real courses

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Â

Yeah but that course was 3/4 downhill. Â So you can't compare that with real courses

Plus I drafted the other 1/4

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I rode an NP of 170w last year and did it in 5 and a half hours at 70kg. Can anyone say "Stages under-reads your power".

you maybe crazy aero

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It doesn't at all.

 

If I'm 60kg and my threshold is 250, my watts/kg is 4.1

If I'm 80kg and my threshold is 320, my watts/kg is 4.1

 

Based on your comment these riders are comparable because they have the same w/kg.

 

But consider this...

 

If both riders go at 250W for the entire course they will both get to the end at around the same time, give or take 5-10mins in favour of the lighter rider (10mins being generous here).

 

Now can you tell me which of the above is going to run and which will be walking?

 

Watts/kg is completely irrelevant to most triathlon courses, including Port. All that matters is absolute power vs drag/how aero you are.

By the strict definition of FTP, I would think this is impossible, right?

FTP = max. sustainable for 1hr, not 5:30 - 6hrs.

This thread needs more "science" and less " hypothetical". :smile1::smile1:

Come on people , put up some real data .

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No

Please don't

 

Let's go back to pulling the piss out of each other.

 

It's starting to sound like Slowtwits

Edited by fitfastfat977

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Â

I rode an NP of 170w last year and did it in 5 and a half hours at 70kg. Can anyone say "Stages under-reads your power".Â

190w last year, 70kg, 5.40 on a road bike with clip ons. Same power and weight in 2011 for a 5.20 on a tt bike (with race wheels as well).

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So 210-220w (not on a stages) @ 65kg (even though it doesn't matter) should get someone...

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So 210-220w (not on a stages) @ 65kg (even though it doesn't matter) should get someone...

Close to kona qual providing your runs 1/2 decent ð

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Double post

Edited by truck

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Close to kona qual providing your runs 1/2 decent ð

Not interested. Just wanna have a crack at the benchmark Rog has put down.

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2014 on a Cervelo S2 58cm with clip ons and stages pm @<74kg: Lap 1 (Strava segment) 183w 2:52:28 Lap 2 163w 3:06:21.

Wind picked up on 2nd lap plus my power dropped. I was not overly aero, when switching to a p3 56cm I was estimate my gains were about 5mins faster on a 70.3.

 

Last year when I switched from stages to a power tap I recorded both simultaneously, PT average power for 20mins was ~15w higher, ~5%. Add 5% to your stages FTP if simulating on best bike split, it should be closer to the truth but also realise that your cda or aerodynamics is a very large part of the equation as is the wind on the day of the race. It is a great site, especially for analysing the impact of weight and equipment changes.

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So 210-220w (not on a stages) @ 65kg (even though it doesn't matter) should get someone...

That guy you're sitting behind must be pulling some watts. :)

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That guy you're sitting behind must be pulling some watts. :)

That would be me

But I'm a little fella

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220W will probably get you a 5h10m, maybe 5h15m at Port? Same watts would be 5hrs at Cairns. I'd say that's about right.

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220W will probably get you a 5h10m, maybe 5h15m at Port? Same watts would be 5hrs at Cairns. I'd say that's about right.

About what I expected. ~10min slower than taupo.

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Big difference between 5.43 and 5.15 espually at NZ last weekend

 

Port is a harder course for time and watts than NZ

What was your NP power ?

NP was 173, I rode a higher power the second time back into Taupo than the first (I.e negative split from a power perspective) as I rode conservative for my first IM.

 

I think the conditions were about 20 - 25 min slower than the year before. Prior the the race Best Bike Split had me at 5.18 off170w. I have my cda set up fairly accurately in there, it has consistently predicted bike splits within +/- 30 seconds at Shepparton 70.3 for me.

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I've raced at about that weight and doubt I would have been over 180W. That worked out at 5:40ish.

Around the same for me last year.....183w/5:39/68kg/notaero. The usual wind/rain combo typical east coast racing.

 

 

Sent from my iPhone using Tapatalk

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I'm confused :o How long would the ride take at 100wts, 72kg (yeah right!), heavy 40mm alloy wheels, 15yr old bike and unshaven (and I'm not talkin' 'bout my face)

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Confused also - I thought this thread was about IMOZ 2017

 

Power stuff is cool and I like the banter, but perhaps the thread title needs to be changed

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Confused also - I thought this thread was about IMOZ 2017

 

Power stuff is cool and I like the banter, but perhaps the thread title needs to be changed

EXACTLY

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