Indoor training is gaining followers and is already a cycling category with its own identity. A whole industry of devices and accessories revolves around it. For those of us who spend hours pedaling indoors, there are two good alternatives: direct-drive interactive trainers and so-called smart bikes or intelligent bikes. And here comes the question: What suits me best? Which device best fits my conditions and needs? Let's start by clarifying concepts. Do you know exactly what a direct-drive trainer is? And a smart bike?

What is a direct-drive trainer

To define it very simply, a trainer is a system that locks the rear wheel of your road bike
or mountain bike
with the help of a stand, allowing you to pedal at home. Currently, the most popular are direct-drive interactive trainers. They work as follows: you remove the bike's wheel and mount it onto the cassette installed on the trainer itself. Once the bike is mounted, the trainer is connected to the power supply and to a virtual cycling app, such as Zwift or similar. After selecting a workout or route, the app controls the trainer, applying more or less resistance and allowing you to monitor your power, cadence, and other values in real time. The cyclist only has to worry about pedaling. You don't even need to change gears. With ERG mode, the trainer itself manages the effort level.

👉 How to choose the most suitable trainer for indoor cycling

What is a smart bike or intelligent bike

Image: eu.zwift.com

A smart bike is a bicycle designed for indoor training. Many people are familiar with typical gym or spinning bikes, but this is different. It is a device focused on providing an experience as close as possible to riding a bike outdoors. Connected to the corresponding app, each manufacturer interprets this in a different way. For example, Tacx integrates a terrain simulation system in its smart bikes; Wahoo's Kickr Bike, on the other hand, tilts to a certain degree to recreate climbs and descents. They come equipped with road handlebars. Resistance is generated by powerful electromagnet systems, which offer a quick response and a realistic feel. They also feature integrated power meters. Whatever approach each brand takes, all share the goal of reproducing the same sensations that cyclists experience during outdoor pedaling.

What to consider when choosing between a smart bike and a trainer

Below, we analyze various aspects that may influence the purchase of one of these devices for your workouts. Which is the best option in each case? Let's find out.

Price

One of the key issues when deciding between one device or another is the price. Let's take an example. While the top-of-the-range direct drive smart trainer from the Wahoo brand (KICKR model) sells for about 1,300 euros, the available Smart Bike from the same brand goes for 4,000 euros. A strong reason to think twice before choosing one device or the other.

Space and portability

When in use, both training devices take up a similar amount of space. Things change when you need to store them. Some direct drive trainers have folding legs, allowing you to store them in a closet, under a bed, or in a storage room. Many also have handles for easy transport. Smart bikes, on the other hand, require more storage space and are heavier. Therefore, it's better to have a dedicated training area so the smart bike doesn't become an obstacle in your daily life.

Adjustment options

One of the great advantages of smart bikes over direct drive trainers is their ability to be customized and adjusted. This is particularly interesting if you want to share your bike with other people. Adapting it to each body type is a quick and simple process. With a trainer, it's the opposite. Since it depends on a separate bike, the geometry and size totally determine the cyclist's performance. The alternative is to change bikes depending on the person, which can be tedious, or to adapt to someone else's measurements, which is always a bad idea.

Market availability

Nowadays, the range of direct drive trainers on the market is enormous. The same can't be said for smart bikes, which is a much more limited segment. As a more niche product, brands tend to be conservative in their offerings.

Noise

Smart trainers are quite silent. In fact, it's normal for your bike's drivetrain to make more noise than the trainer itself. But nothing compares to the silence of a smart bike. This is due to the absence of a drivetrain (chain-chainrings-cassette), which is replaced by a belt, making it cleaner and more durable than a conventional bike chain. This feature makes smart bikes very suitable for riding in an apartment and for those looking for a quiet training device that won't disturb others in the household. They are not completely silent, especially at high intensities. Keep that in mind.

Stability

One of the most complex issues to address when using a trainer is instability. When we stand up for a sprint, for example, even a slight rocking of the system can be annoying. The best trainers use different techniques to try to neutralize this issue, but it is usually problematic. In this situation, a smart bike tends to be much more stable than a trainer. If your workouts often include sessions at very high intensities, a smart bike may be more suitable for your needs. Smart bikes are heavy and have a generous base, which offers total stability.

Maintenance

Although neither device requires special maintenance, the trainer has a disadvantage: you have to maintain the bike that is mounted on it. Even if it doesn’t move, a bike on a trainer suffers wear on its components: chain, cassette, chainrings... In addition, sweat becomes a major enemy, as its corrosive power can eventually damage both the frame and the components. To solve this problem, it is common to have a bike for exclusive indoor use. Many cyclists worry that a direct-drive trainer can damage the bike with prolonged use. However, there is no reason to worry as long as you follow the manufacturer's instructions. Smart bikes require almost no maintenance, except for cleaning off sweat and dust from time to time. Manufacturers do recommend a thorough cleaning once or twice a year. In addition, they are cleaner devices than trainers, since they do not use chain lubricant, which can get on the floor or stain your gear.

Comfort

When it comes to comfort, the world of direct-drive smart trainers is diverse. Some offer a side-to-side rocking angle. This tilt reduces friction between your glutes and the saddle, contributing to greater riding comfort. For their part, smart bikes are usually rigid, so a good idea is to use them in combination with specific platforms. The same can be applied to trainers that do not offer any kind of flexibility. What are these platforms? They are a kind of boards that are placed under the device and provide an even more realistic pedaling experience, thanks to a certain range of rocking, similar to what you can experience outdoors.

Ease of use

When you already have a bike mounted specifically for the trainer, you just have to get on and start pedaling. It’s a different story when dealing with the process of mounting and dismounting, something inevitable if you only have one bike for all types of use, both on the trainer and for your outdoor rides. Mounting and dismounting the bike every time you get on the trainer can be tedious, something you don’t have to worry about if you have a smart bike. You’ll have a bike for training at home and another one (or several) for riding outdoors.

Pedaling sensations

The sensation when pedaling that a smart bike provides is undeniably more realistic than that of any direct drive trainer out there. With the flexibility of adjustments that this type of bike allows, the fit to the machine can be identical to what you feel when riding your bike on the open road.

👉 Advantages of training with a trainer

Is it worth it?

There is no more immersive experience for indoor cycling than the one provided by a smart bike. Conventional bikes are made for riding outdoors and using a trainer is an adaptation that will always have some kind of shortcoming, no matter how small. But a smart bike is different. It is designed with indoor cycling in mind and its entire development follows that purpose. From this premise, the decision is yours. Which device best suits your needs?