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I’ve not done a 12 min test, but have done 8 and 20’s before. They all do the same thing - give a rough approximation of FTP, so long as you fit the bell curve average and aren’t an outlier.
Don’t worry too much about the number for now. Just ride with the power meter for a while, gathering a variety of data (max efforts at various durations) and keep testing every few weeks and you’ll start to learn where your FTP is.
I find a turbo much easier for FTP tests. It just takes away the distractions and means every test is consistent.
TTM-
I find a turbo much easier for FTP tests. It just takes away the distractions and means every test is consistent.
This is true, but I can never match the numbers I can do outside on the road on a turbo. It's definitely not calibration issues - the numbers are within +/- 1% comparing the trainer to the power meter. But outside my FTP is at least 10% higher than it is outdoors. Maybe I need a bigger fan...
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Ok, thanks. Hoping to get a Kickr in the next couple of months.
Brommers
jakemcree
I've just done my first FTP test following the one that comes already loaded on my Edge 830. Was a bit weird, thought it was supposed to be 20 minutes but think it was 12? It was a bit of a mess and ended up having a couple of cars pull out on me which fucked up my rhythm. Don't know how accurate it was.
Has anyone used the Garmin one? Did you find it accurate? Need a turbo I think...