Riders with Power Meters Needed

[DirtyWorks]

A guy who contributes quite a bit of public science to competitive cycling discussions has asked for some volunteers to use as sample data.


who: skinny guys with power meters and skinny friends

what: ride on the hoods in the lead and draft position with your friend at 10 km/h 20 km/h 30 km/h and 50 km/h wearing tight fit cycling clothes (no wind vests jackets etc)

where: on a track or a flat windless road

and then: report your height weight and power output at each speed in the lead and drafting position

what do you get out of it: not much

http://veloclinic.tumblr.com/post/64752408650/needed-volunteers-for-research-study

If you and some friends meet the requirements, please help him out.

 

[FitSsikS]

what: ride on the hoods in the lead and draft position with your friend at 10 km/h 20 km/h 30 km/h and 50 km/h

Sounds interesting.
We always hear those commentators claiming, "You save X amount of energy while drafting at that speed."
Curious, no 40kph. Deliberate omission or typing booboo?

 

[Alex Simmons/RST]

Sounds interesting.
We always hear those commentators claiming, "You save X amount of energy while drafting at that speed."
Curious, no 40kph. Deliberate omission or typing booboo?

I did this blind analysis on the difference between leading and drafting at 12 metres behind:

http://alex-cycle.blogspot.com.au/2013/02/pour-me-draft.html

It might surprise some.

 

[DirtyWorks]

Sounds interesting.
We always hear those commentators claiming, "You save X amount of energy while drafting at that speed."
Curious, no 40kph. Deliberate omission or typing booboo?

I don't know what his intentions are, but it could be an accident that the ITT for the annual World Championships average about 50KMH.

I know there are forum visitors who have the power meter to do this. Please help him out.

 

[IrishBias]

I don't know what his intentions are, but it could be an accident that the ITT for the annual World Championships average about 50KMH.

I know there are forum visitors who have the power meter to do this. Please help him out.

I was thinking the easiest way to test this is hold a steady watt output in two positions and compare time over the course. Will try this Thurs on a 10K course.

 

[veganrob]

I did this blind analysis on the difference between leading and drafting at 12 metres behind:

http://alex-cycle.blogspot.com.au/2013/02/pour-me-draft.html

It might surprise some.

That is 12m front wheel to front wheel. Wow. That really is quite surprising. Amazing.

 

[Alex Simmons/RST]

I was thinking the easiest way to test this is hold a steady watt output in two positions and compare time over the course. Will try this Thurs on a 10K course.

You won't be able to hold a steady power and a steady relative position when following a lead rider.

There are far better means to analyse such data.

 

[Alex Simmons/RST]

That is 12m front wheel to front wheel. Wow. That really is quite surprising. Amazing.

Yes, and it's one clear physical reason why drafting and passing (or non-passing) nightmares occur in IM and other non-draft triathlon events.

There are other reasons for the 'mare as well.