Smart trainers. Interactive and fun.
Using smart trainers is so much more interactive.
There's a constant 2-way information stream happening.
As you pedal, the app (Zwift, TrainerRoad, Wahoo SYSTM) gives you feedback on your speed, distance, power, cadence and heart rate.
Zwift also is more of a social app. You can ride with others in a Virtual Reality world. TrainerRoad's purpose is designed to make you faster.
Bike trainer. 2 ways to attach.
There are 2 ways to connect your bike to a smart trainer:
Direct-drive smart trainers replace your rear wheel and connect directly to your bike.
Compared to wheel-in bike trainers, these are some advantages:
A more realistic road feel. They're quieter and won't wear your rear tyre. They can handle way more power output from sprints and climbing.
Examples are the Wahoo KICKR Move, KICKR and KICKR Core.
Wheel-in smart trainers (like the KICKR Snap) clamp onto your axle and your rear tyre makes contact with a roller.
Fluid bike trainer.
As the fluid rotates faster inside the resistance chamber, it becomes harder to push the fluid around.
This creates more resistance. Just like riding outside is harder at higher speeds.
The flywheel weight is also important.
A small flywheel will shut the speed instantly as soon as you stop pedalling. A larger flywheel will continue the pedals to spin and hold momentum.
Magnetic bike trainer.
These bike trainers have the lowest power output.
Even though they are the cheapest type, they are still suitable for riders who are recovering from an injury as an avenue for rehab.
Unlike the fluid bike trainer above, the resistant curve is linear and not progressive.
You'll feel the same resistance no matter your pedalling speed.
Some magnetic trainers will have a single resistance. Others will have a handlebar mounted lever that allows rider to control the resistance.