Garmin Vector pedals and speed/cadence sensor

[sfscott]

I have the wheel and crank arm magnet along with the sensor attached to a chain stay.

With Vector pedals and a GPS-enabled 510, do I need the magnet and sensors?

Trade-offs? Issues. FWIW I don't ride a trainer indoors.

[Highpowernut]

You wouldn't need the cadence portion, speed could go off gps. Garmin has a speed sensor that goes on the hub, works great, gets ride of the chain stay mounted sensor. Looks cleaner imo

[BSBD]

Cadence is part of the power profile that the Vector uses.