• The Cycling News forum is still looking to add volunteer moderators with. If you're interested in helping keep our discussions on track, send a direct message to @SHaines here on the forum, or use the Contact Us form to message the Community Team.

    In the meanwhile, please use the Report option if you see a post that doesn't fit within the forum rules.

    Thanks!

Power to weight ratios

Page 3 - Get up to date with the latest news, scores & standings from the Cycling News Community.
Le breton said:
---------
No need to do the calculation, the data are known!

You should have talked a bit longer with Coggan, he certainly would have brought to your attention the fact that all the data are already available!

I don't have time right now to look up the reference but I remember quite well the result.

On that 49.441 km day, Boardman,according to information provided by his trainer Peter Keen( you have to do a bit of interpolation) only produced 401 watts, ie 5.9 watts/kg. He weighs 68kg. In other words he was far from his best.

I remember reading something that made me think that they had pushed the temperature inside the velodrome a bit too high, probably close to 30°C.

Anyway, you have enough info now to infer his CdA.

Que te vaya bien

If/when i come across that paper I'll tell you.
see http://journals.lww.com/acsm-msse/A...ycling_world_hour_records,_1967_1996_.25.aspx
Thanks for the Info.

Wow. Where did I get that weight from? I had not notice I had put the wrong weight. Fixed that already. Also fixed the temperature.

I got one report on 460 Watts (??) which put him on the high side (6.7 W/kg). Of course if he did 401 W, then it is well inside the acceptable power output.

I got a CDA of ~0.25-0.27. That is extremely good for the type of bike that he used. He must have been very flexible rider to lower its frontal area so much.

This is what I hate about doing calculations for time trials or hour records, a small variation will change the whole calculation drastically. I’ll stick to mountain climbs calculations.:)