How to choose a mountain bike for yourself?
For many years, the majority of How to a Choose the Right Mountain Bikers didn’t think about wheel size while choosing a bike. This is due to the fact that standard 26-inch wheels arrived on all mountain bikes.
Then two wheel sizes appeared, and they mostly replaced 26-inch wheels. 29-inch wheels, also known as 29ers, were the first to appear, and 27.5-inch wheels, sometimes known as 650b wheels, appeared a few years later.
The sort of terrain you want to ride on and what you hope to gain from a mountain bike will both have a significant impact on the appropriate size for you.
A quick comparison of 29er and 27.5″ mountain bikes:
|Fit||Favours shorter riders||Favours taller riders|
Take test rides: The best way to understand the differences between 27.5 and 29-inch wheels is to experience them firsthand. Visit your neighbourhood REI or bike store and test-drive each one.
While 29-inch wheels are more effective on longer rides, 27.5-inch wheels accelerate more quickly.
Larger wheels take longer to accelerate than smaller ones. The location of the wheel’s weight distribution is mostly to blame for this. Larger wheels have a larger rotational mass and slower acceleration because the spokes, rims, tubes, and tires are heavier and farther from the wheel’s centre. A rolling item will roll more quickly and easily if its rotational mass is reduced.
27.5″: One of the main advantages of a 27.5″ wheel over a 29″ wheel is that it accelerates more quickly. Faster rolling wheels offer a bike the snappy, responsive feeling that many riders want.
29″: Slower-acceleration wheels take longer to accelerate, which might make the bike seem unresponsive. Larger wheels, however, are actually more effective for longer rides than smaller wheels since they need less work to maintain their momentum after they achieve peak speed.
29-inch wheels provide superior traction due to their larger surface area, or “contact patch” (when comparing comparable tires).
Example of traction
27.5 in.: These wheels are suitable for the majority of uses and provide excellent traction. Your choice of wheel size may ultimately depend more on other aspects like acceleration, weight, and fit.
29 in.: These wheels can be your best option if traction on slick rocks and roots is a top priority due to their bigger contact patch.
29ers can more readily roll over obstacles.
The angle created when a round wheel contacts a square object is known as the attack angle. Because the wheel may roll over the obstacle more readily, a shallower angle is preferable.
A good assault angle
While not as manoeuvrable as 29-inch wheels, 27.5-inch wheels are nonetheless fairly strong. Consider the terrain you’ll be riding on; if it’s largely smooth trails, 27.5″ wheels should work just fine.
29-inch wheels are better for rolling up and over logs, roots, and rocks that you may come across on the trail since they have a little shallower attack angle than 27.5-inch wheels. With bigger wheels, many motorcyclists feel more secure.
Wheels with a diameter of 27.5 in.
It cannot be denied that a heavier wheel is larger. Due to heavier wheels and more tire rubber, bikes with 29 in. Wheels might weigh about two pounds. compared to bicycles with 27.5 in. wheels.
The weight of your bike might be significant or not, depending on the sort of riding you undertake.
If you ride sometimes, the weight disparity between 27.5-inch and 29-inch wheels may not be your main issue. You could give traction and attack angle more consideration.
If you participate in long-distance cross-country rides or are competitive, you’ll undoubtedly be searching for weight-saving strategies. One technique to lighten the load is by choosing a smaller wheel, but it’s not the only one. Additionally, consider using carbon fiber for the very light frames, handlebars, seatposts, and rims.
Another excellent technique to lighten things is to set up your wheels to be tubeless. Due to their less rotational mass, tubeless wheels accelerate more rapidly in addition to making the bike lighter overall. Additionally, they have the extra advantage of allowing for lower tire pressure for improved traction.
Manoeuvrability (Frame Flex) (Frame Flex)
27.5-inch bikes are easier to manage.
Due to the longer frame that comes with the bigger wheel size, a 29-inch bike is more flexible. A bike may seem tougher to control in tight corners as a consequence.
You may enjoy the sensation of a 27.5-inch bike if you often ride narrow, winding terrain. While preserving many of the advantages of a bigger wheel, 27.5 in. The original 26-inch-sized wheels’ sharp feel hasn’t really changed much.
You could discover that you don’t miss the sharp feel of smaller wheels after switching to 29ers since you can go up and over rocks and roots rather than having to swiftly navigate around them.
Taller cyclists typically benefit more from 29ers.
More so than 27.5 in. wheels, bigger 29 in. wheels have a significant impact on a bike frame’s overall geometry. This may make it challenging for shorter riders to find a 29er that fits properly, particularly those under 5 feet 6 inches tall. If you can, test drives both wheel sizes.
Taller riders may like the sensation of a bike with 29-inch wheels, particularly those over 6 feet tall. Decide where your goals are in terms of acceleration, traction, attack angle, and weight before choosing a bike with 27.5 in. wheels, while a bike with such wheels may also suit tall riders well.
These are the tips for how to choose mountain bike.