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Tacx Flux 2 Smart Trainer

The Tacx Flux 2 Smart Trainer sits below the NEO-series models in the line-up, in features and price ($899). This direct drive trainer offer substantial upgrades over the Flux S model, with important improvements in power, incline, accuracy. Tacx actually released the Flux 2, then it pulled back, and re-released after some physical changes were made, along with firmware updates to ensure the proper integration of the changes. That is why this unit is informally referred to as the 2.1. Tacx has persevered with the Flux 2 because it does hit a nice price point and capability set. It not quite as silent as the NEO, but is very close, and has a better "road feel" than the Flux S. The 16.75 ound flywheel is combined with the Tacx Interactive Smart direct drive system, which features an electric brake with 8 permanent ferrite magnets and 8 electromagnets, ultimately delivering a simulated 31.6 lbs at the flywheel. Why does that matter?

The max power output at 40 kp/h is now 2000 watts, or pretty much safe for most pro sprinters to push hard. Accuracy has been brought down to +/- 2.5%, and the max incline is 16 percent, which is more than enough for 90% of all cyclists to train on. The flywheel weight and electromagnetic system also deliver 500 watts at 15 km/h, which is significant for training on steeper grades, especially for heavier cyclists. The feel and output is more real, and delivers a more accurate set of metrics for training plan purposes. The Flux 2 can be used in Erg or Simulation modes, of course, but also a standalone trainer, with no app or control connected and has a progressive resistance load that increases as your effort builds- similar to a base fluid trainer. All modes and features require AC power.

Tacx hues to the current standards for connectivity, with ANT+ FE-C and Bluetooth Smart Open capability. Within those you get speed, cadence and power info, along with the ability to interact with head units, devices of all kinds, and 3rd party Apps like Zwift, Trainer Road, etc. LED indicators show connectivity. The Flux 2 features a Spindown calibration process that simple and can be executed through some 3rd party Apps, but also through the Tacx Utility App, which is also the access point for firmware updates. Tacx also offers a PC based training software/app and other tools. Overall it covers all the crucial bases for use with any of these systems, is Apple TV friendly, and can truly change your relationship with interactive indoor training.

Physically, as a direct drive smart trainer, your bike is mounted on the trainer without the rear wheel. Tacx supplies the Flux 2 with an 11-speed Shimano/SRAM freehub body- but NOT a cassette. The hub system is compatible with 130 and 135mm quick release dropouts, and Tacx includes their special skewer adapter set-up for use with 12/142 and 12/148 mm thru-axle systems. Out of the box, you will need to attach the base leg system- it is simple- but it does not fold up and at almost 47 lbs, you'll likely keep it close by the training area- or simply leave it there. A simple power cord is included, as the power brick is actually integrated inside the trainer body.

There is much to like about the advances Tacx built into the Flux 2 Smart Trainer, and with the NEO 2T now at $1399, having about 85% of that unit's massive capability for only $899 certainly adds appeal. Even top level cyclists can train hard on this unit, so just about every level of rider who wants an interactive smart training experience can put it through it's paces.

Features

  • Gen 2.1 FLUX 2 direct drive Smart flywheel trainer with speed/cadence/power
  • Increased incline capability, accuracy and power
  • Interactive Smart direct drive w/ electric brake (8 permanent ferrite magnets & 8 electromagnets)
  • Offers ANT+ FE-C, ANT+ Power, BLE Trainer Control, BLE Smart Power
  • LED lights confirm ANT/BLE connectivity
  • Spin down calibration system
  • Use many 3rd party training Apps; Tacx Utility App for firmware updates/calibration
  • Can be used as a stand-alone trainer, with no app use, featuring a natural progressive resistance curve
  • Requires AC power for resistance and control (power block is internal, just a simple cord used)
  • Accuracy: +/- 2.5%
  • Max wattage: 2000w at 40km/h (500w at 15km/h)
  • Max incline: 16%
  • Flywheel: 16.75 lbs, electromagnetic system simulates 31.6 lbs
  • Very quiet DD trainer with physical flywheel (>65Db)
  • Fixed base design, with bolt-on foot section (does not fold); no riser block required for front wheel
  • Supplied w/ Shimano/SRAM 11-spd freehub body & 1.85mm spacer (8,9,10) [Cassette not included]
  • Tacx does offer SRAM XDR and Campagnolo freehub body separately
  • Equipped for 130/135mm QR use (includes steel QR) and has it for 12/142-148 thru-axle use
  • Footprint: 26.4 x 25.3" (height 18.1"), fits on virtually all trainer mats sold
  • Weight: 46.9 lbs
  • Tacx # T2980