I recently got my PT SL back from a guarantee service after some moisture issues. Actually, it seems like they have changed all the parts on the inside of the hub[img]cyclingforums.comsmile.gifOpen ↗[/img]
Now I finally am able to use the PT on the turbo trainer, but the numbers seem far to low..
I did a MAP (VO2max test really) test at a laboratory a couple of months ago. The last minute was at 500watts. I haven't really done any test to determine FTP, but based on my MAP I guess it's in the 350-400 range. On my tacx swing I struggle to ride at 270w for 20mins. What's wrong??
Power meters · Public discussion
Tacx swing - low power
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- Power meters
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- 25 February 2007
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- 26 February 2007
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- walser
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HAve you zeroed the torque since you got your hub back? The only time I've seen non-zero torque was when my hub came back from warranty.
Also, many people (myself included) have great difficulty matching outdoor efforts on a trainer. V02max tests are a bit different, due to the (relatively) short duration.
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I have zeroed the torque, yes. Probably just me then:o
I think I can blame the tacx trainer a bit as well. I found out today that it is a lot easier to get high wattage if I increase the magnet resistance and ride easier gears instead. Unfortunately, it feels very un-natural to ride like this. I guess when I ride it's like I'm going downhill, harder to produce power then. Have very good experience with my winter turbo training though, so I don't think I'm gonna change.
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