MTB
Comparative Study
What you should bear in mind when choosing a wheel? 1
angle of attack The larger the wheel size the smaller the angle of attack. This means that the wheel sinks less in holes as it tends to pass over them
27.5er
29er
The main advantage of using a larger wheel is that it’s easy to move over obstacles on the ground. It’s makes stones, branches and roots seem smaller than they should because in proportion to the size of the wheel, they are relatively smaller. When we face an obstacle it is as though the wheel needs to climb a small hill.
2
inertia A larger wheel requires more power to start, but once you’re moving, inertia provides longer momentum for each pedal stroke and the bike travels farther.
3
27.5er
29er
traction and cushioning A larger wheel provides a greater bearing surface on the ground, i.e. its “footprint” is larger This results, on the one hand, in greater tyre grip and lower likelihood of sliding. The traction of the 27.5er and 29er models is significantly higher than the 26er.
27.5er
29er
Moreover, the greater surface area means that the wheel sinks less on soft surfaces, such as snow, mud or sand.
4
ride and handling The 29er bikes offer a more stable ride and the 27.5er’s provide better handling on descents Smaller wheels have the advantage of greater rigidity - so the 27.5er wheel provides for more aggressive use.
5
27.5er
29er
acceleration and rotation
27.5er
Diameter and weight directly affect acceleration. It is more difficult to accelerate and brake with a larger wheel; rotation is also more difficult, but they maintain a higher top speed.
27.5er
29er
acceleration
142
29er