Originally Posted by
TheKillerPenguin
You ever zero the hub? It should be within a very specific range, or close to it. They do auto zero, but if it's out of spec I'm not sure it works well.
Seriously though...position matters a ton. Going from forward and tall to back and flat has done wonders to my speed/power ratio.
I use a Garmin 705 still, so I use the 'calibrate power' before every ride and it gives me a number. What that means I don't know. Perhaps a little research is due on my part!