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Component Deals & Selection / Re: Magene P515 PES Spider Powermeter
« on: June 18, 2026, 01:38:28 AM »I'm using a 1x oval chainring and had to adjust the slope from 100% to 97% after comparing the 3-second power readings with my Saris H3+ smart trainer.The Magene is measuring before the drivetrain and the Saris is measuring after it. A small offset would be expected anyway, but what makes you think your trainer is more accurate?

