Torque Effectiveness on the Garmin Vector

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Torque Effectiveness on the Garmin Vector
Torque Effectiveness on the Garmin Vector. Source: Garmin

So here is how your downwards power can be effectively applied throughout your pedal stroke. As you may have guessed most of it is when you push down. But look, when your foot is rising you can STILL apply some downwards pressure. If you do that it will reduce the effectiveness of what the other leg is doing.

So in the above diagram, total power applied = P+ minus P-.

If you can de-weight your rising feet then P- will approach zero (good)

I guess if you pull up then P- could be positive. I guess that’s good.

Anyway, with Garmin’s new Vector power meter which is a pedal based solution then this can be measured.

I did just that.

With one legged pedalling it is pretty hard to NOT achieve 100% effectiveness – albeit tiring.

When you pull up (two legs, normal) then 100% can be achieved, initially, for periods of a few minutes – albeit tiring.

For me ‘normal’ pedalling at pretty much any power was in the 80’s %.

Moral of the story: It appears that efficiency might be relatively easily improved by doing one legged drills. But then we knew that anyway 🙂

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