Tacx Flux Smart T2900 Cycletrainer

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  • Description
  • Fact Sheet
  • Ratings (3)

Description of Tacx Flux Smart T2900 Cycletrainer

The Tacx Flux Smart T2900 cycletrainer features a compact and realistic direct drive - interactive and maintenance-free. The swift response of the Smart electronics and the 7 kg flywheel transmit the slightest fluctuations in resistance directly and accurately to your legs. Of all the Tacx trainers, the Flux has the heaviest actual flywheel with an effect of 25 kg. The greater the flywheel effect, the more realistic the cycling experience.

The Flux Smart uses ANT+ and Bluetooth® Smart for communication and can therefore be connected wirelessly to smartphones and tablets. The ANT+ FE-C protocol enables you to train with Tacx apps as well as with third-party apps such as Zwift and TrainerRoad. You can also train stand-alone. If you do not connect the Flux, it will simulate a flat road.

Features of the Tacx Flux Smart T2900 cycletrainer:

  • software: Tacx apps and third party apps, PC software optionally via upgrade
  • automatic operation
  • resistance unit: direct drive
  • realistic slope of 10% (with a total weight of 75 kg)
  • max. brake power: 1500 W (10 s)
  • mass inertia 22.8 kg

Flux Smart Electromagnetic brake

The Flux Smart cycletrainer works with an electromagnetic brake with the advantages of being silent and maintenance-free at the same time. Thanks to the electromagnetic brake a resistance can be set that you also experience on the road or in a climb. The resistance unit provides a particular cycling experience by increasing or reducing the resistance on the rear wheel.

When cycling in a virtual terrain or in a film you can get outside the range for which the brake is intended. To allow cyclists with a motor brake and those with an electric brake to ride races against each other in multiplayer mode*, Tacx has developed the virtual speed. This concept translates the energy supplied into a certain speed, which can guarantee a fair contest. If this speed differs from the speed at which the rear wheel is running, the virtual speed will be shown on the screen in red.

* For this the Tacx Trainer Software 4 Advanced (included in the optional available Upgrade Smart package) and a license (7-days trial period) are required. See also "Software and apps".

Software and apps for Flux Smart

The Tacx Flux Smart trainer can be connected to your smartphone, tablet or computer with ANT+ or Bluetooth® Smart in order to use Tacx software and apps or that of others. With the possibility to use the trainer also stand-alone you are completely free in choosing your indoor cycling workout.

With the Tacx software and apps you may regulate your training ride by heart rate, gradient and power, or you may pick a famous route or race. Besides that, you may compete with other riders online. The training options vary by application:

Tacx Training App for smartphones

The Tacx Training App allows you to train freely based on slope, power or heart rate. The Analyser presents the performance data on your smartphone's display. The saved data can be analysed afterwards via the Tacx Cloud and with export you send the file with your results to the given email-address. This file can be uploaded in trainings software like Strava and Trainingpeaks.

Tacx Cycling App for tablets

The Tacx Cycling app is a simplified version of the Catalyst training software, the Analyser and Real Life Video to ride existing courses.

Catalyst offers professional training programs and fitness tests for a scientific analysis of your training session. Train on heart rate, power output or slope. Analyser presents the recorded training data on the screen of the tablet. Your performance is displayed in a graph.

Cycling in a Tacx film makes a training session more enjoyable and adventurous. The speed of the film is influenced by your cycling pace. If you are cycling up a mountain, the brake of your trainer will generate so much resistance that you can actually sense the percentage of incline.

Connection to Windows PCs (optional)

If you want to get more out of the Flux Smart you can achieve this by connecting your trainer to the computer. That way, you can train using the Tacx Trainer Software 4 Advanced.

Instead of your tablet or smartphone, your computer is used to regulate your resistance and read out your performance data. For example, the computer software makes longer rides with videos in HD or Blu-Ray quality (sold separately) possible. While riding, the resistance on your rear wheel is adjusted automatically when the slope increases or decreases.

To connect the Flux Smart cycletrainer to your Windows computer, the Upgrade Smart set is required. This package contains the Tacx Trainer Software 4 Advanced, a control box to mount on your handlebar and the ANT+ Antenna.

Third-party software

All Tacx trainers are freely accessible since June 2015 as they are able to speak the ANT+ FE-C language. You can now adjust the resistance of our Smart trainers and check your speed, cadence and power with other software. The following software packages speak this new language too and allow you to control Tacx trainers: Zwift, TrainerRoad, Kinomap and Bkool.

Compatibility of Flux Smart:

NOT compatible with Campagnolo. For use with Campagnolo cassettes, the Tacx T2805.51 Campagnolo rotor is required.

  • Shimano: 9-, 10- and 11-speed cassettes
  • SRAM: 9-, 10- and 11-speed cassettes

Note: The cassette is not included.
  • Description
  • Fact Sheet
  • Ratings (3)

Fact Sheet of Tacx Flux Smart T2900 Cycletrainer

Product Name: Tacx Flux Smart T2900 Cycletrainer
Manufacturer: Tacx
Item Code: TAC285894
Year: 2018
Manufacturer item code: T2900
Weight: approx. 20,00 Kilogram (manufacturer's specs)
Included in delivery: trainer with an electromagnetic brake
cap for adjusting over locknut distance
quick release
without cassette
Color: black
Fitting wheel size: 700c, 26"-29"
Speciality: direct drive
electromagnetic brake
ANT+ and Bluetooth Smart
Construction type: flywheel cycletrainer
  • Description
  • Fact Sheet
  • Ratings (3)


(3 Ratings)
Rate this product
Customer Reviews
Läuft sehr gut.
2 Tage bisher:

Bin umgestiegen von Tacx Fortius. In der TTS4 kann man übrigens den 10 Jahre alten Lenkrahmen T1905 und das Steuergerät T1925 einfach weiterverwenden. So ist weder Vorderrad noch Hinterrad im Einsatz. Nicht verkaufen den Lenkrahmen, wer weiß was Zwift/Tacx noch vorhat!
Installation mit orig. TACX-Ant+-Dongle T2028 problemlos. Bei Verwendung v. TTS4, aber erst per iPhone die Firmware aktualisieren DANN erst TTS4 starten und mit Flux verbinden. Lautstärke: neue Kassette und alte Kette -> laut. Besser Kassette vom LR auf Flux montieren. Interaktive Verbindung/Verwendung mit Zwift klappt problemlos.
Habe 17er Seriennummer - durchrutschende Riemen sollten also eigentlich nicht mehr auftreten - abwarten.
Silent, easy to setup, more than enough power. Just perfect for the money
Nach 400 km ist der Flux vorgestern kaputt gegangen. Ich bin auf Zwift das 2x 15 Minuten FTP Workout gefahren und kurz vor dem Ende der 1. 15 Min Phase, hatte ich das Gefühl das etwas durchrutscht und plötzlich wurde es laut und roch nach Gummi. Danach habe ich noch 2 Minuten probiert zu fahren, aber keine Chance. Es kommen laute Geräusche aus dem Gehäuse und irgendwas schleift. Habe dann Kontakt zum Tacx Support aufgenommen und ich bekomme in den nächsten Tagen einen neuen Flux.

Mittlerweile habe ich eine Flux Facebook Gruppe gefunden. Dort gibt es einige die schon das 2. Gerät haben und mehrere die beim 3. oder 4. sind.

Bis der Flux kaputt gegangen ist, war ich sehr zufrieden. Einfache Montage und Installation & super Fahrgefühl.
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