TACX FLUX S
£549 Steady and stable
WEIGHT 23.6kg FLYWHEEL 7kg CASSETTE INCLUDED No NOISE 60dB
It’s hard not to be impressed by the sub-£600 Flux S direct-drive trainer. It works with all the common road and mountain bike wheel and hub sizes. Tacx doesn’t include a cassette but there’s no need for a cadence sensor because the unit offers this data.
Getting started is simple and, as with most trainers, it hooks up with your hardware and ANT+FE-C bike computers connecting via ANT+. It also pairs seamlessly with Tacx’s own app and third-party software like Zwift.
We were impressed by the stability of this trainer thanks to its weight and 67cm long x 64cm wide footprint. It feels rooted to the floor however hard you push it. Unfortunately, the legs, which you have to fit, don’t fold away for storage. Noise levels here are impressive and you won’t upset anyone in the next room. As for the power figures, Tacx claims they’re within 3 per cent accuracy and this was the case when compared to our power meter. Cadence data was similarly good too.
The ride feel is good thanks to the 7.6kg flywheel. The resistance is smooth and adds to the overall feel. The Flux S offers a maximum 2000 watts of resistance, which will be sufficient for most. It can simulate climbs of up to 10 per cent. When you consider Mont Ventoux has an average gradient of 7.4 per cent there’s plenty to work with here.
The Tacx Flux S is a very capable and stable trainer that offers a wide range of functions and is quiet in use. It’s just not as portable as some.