The first bicycle wheels were made from horse drawn cart wheels! Wooden wheels with a metal band around the bicycle rim were very hard and uncomfortable to ride. Cycling became much more fun when the pneumatic tire was invented and tarred roads came along. And after the first wooden rimmed wheels there came steel, alloy and now if you can afford it, carbon. When you’re getting some bike wheels these days you can choose between a heap of things including the material used, the shapes/cross-section and the hub construction ( spoked or solid ).
Out of all the bicycle parts the wheel rim can make a big difference to how your bike handles . If you’re into bike workouts where you’re moving fast, this can be important, and if you’re a sprinter or climber then you need light wheel rims so that you don’t get slowed down. With road biking, where the surfaces are flat and even, it’s easier to get the wheels rolling and then the weight gives you good momentum to keep moving .
Flat rims are best for climbing, as aerodynamics are not so important on a hill, while a deep section, aerodynamic wheel rim will help you cut through the air if you’re moving fast ( you can get some handling problems with these in strong cross-winds though ). So the shape of the rim can be important too.
The material used in a bike rim should be taken into account. Steel is heavy can be hard to repair if a wheel gets damaged, but it’s also quite difficult to bend in the first place and cheaper than all the other materials.
Alloy is probably the most popular now-days. It can be made into any shape and profile, flat or aero, but not too deep as it would then weigh too much. Most deep section rims have an alloy braking section nearest the tire which is then mounted to a carbon deep section for lightness and aerodynamics .
The best wheel rim would have to be an all-carbon one. Carbon is strong and very light, but in wet conditions their braking isn’t so good. so you need special brake blocks for carbon which are quite expensive. Also the rim has to be perfectly round and not have any bulges in the rim wall or the braking can become erratic. Carbon is a difficult material to work with and must be well looked after.
The type of tire you intend using also influences what rim you go after. There are two types:
So there’s a lot to decide on, but one good thing these days is that wheel are are manufactured in all these variations and in sets – Mavic, Shimano and Campagnolo are probably the best known, and there are other brands as well. The manufacturers produce the wheels as complete units so that you can buy them already set-up for whatever style of riding you’re into .
The merida matts TFS 800 spot a nice shape that comes with main tubes and curving, complex cross-section stays plugged into airy, cutaway dropouts. The matts TFS 800 looks just like the sophisticated hardtail. TFS stands for Techno Forming System, which may sound like a dodgy Euro dance band but is genuinely a clever edition of the more costly and widely used hydroforming process for producing complex section tubing.
According to Merida, the main difference of opinion between the two tube-shaping processes is that hydroforming allows thinner tube walls and hence lower weight, but the 800′s all-up 28lb heft is right on the money and the tube forming process should result in strength and rigidity exactly where it’s needed. Neat touches like the bullet-ended cable stops add to the feel of a high quality frame that would certainly warrant long-term upgrading as components succumb to wear and tear.
Holding up the front and trying to point everything in the right mode is this bike’s weakest point – a coil-sprung RockShox Tora 302 fork with 100mm travel, adjustable compressing and rebound damping. It’s just not anywhere near as plush or as adjustable for different rider weights and styles as, for example, its air-sprung Recon stablemate – although budding racers will appreciate the lockout purpose.
Cross province race hardtails sometimes sacrifice ease for speed, on the base that race-hardened athletes will put up with a harsh ride for a couple of hours if it gains them a few crucial seconds towards a podium finish. Thankfully, the Merida Matts TFS 800 doesn’t fall into this category. Racing on a budget doesn’t necessarily mean that you want to be ground into a pulp, and it appears that Merida’s product designers know this.
While there’s nothing about the Merida Matts frame’s design that suggests anything but an efficiently rigid chassis, the reasonably thin tube walls and some careful tube shaping make for a ride that’s sprightly and enthusiastic without being harsh. Spirited pedal input translates into gratifyingly rapid forward progress, while the fork filters out the worst that the trail has to offer and the rear end follows through with a lithe, skippy gait. That’s rather an achievement for an aluminium hardtail at this monetary value, and while the fast-rolling and grippy Maxxis tyres can potential take some of the credit, much of it is down to the sound frame design and construction. We can’t help but feel that it would be even better with a plusher fork, though.
The Schwinn 140 Upright Exercise Bike is one of the most well-liked entry-level exercise bike on the market today. It offers a unique design thatrelies on core muscles to balance your weight.
Mechanically, the bike is excellent. The resistance changes areeasy and you can alter resistance at any time in a routine with a single touch. You’ll find 16 resistance levels in all.
One of theoutstanding features of this bike is how even and quiet it is. As a rule, entry-level fitnessbikes are noisy and flimsy. However, Schwinn used a heavy duty frame and quality materials to allow this cycle to compare favorably against more expensive models.
The display is well lit and simple to read. It tilts tonumerous angles but it seems the best toview when it lays flat (including making it a great newspaper stand in that pose as well).
Some notes of caution; the Schwinn 140 uprightexercise bike is intended to be ridden by the “average sizeindividual”. This means that if you’re almost 6 feet tall, you may find your knees hitting the handle bars when you workout. If that applies to you, you might want to consider another model of fitness bike, like the Fitnex B30 Upright Exercise Bike
Compared with some more expensive models, the seat on this bikecannot be moved in enough to simulate a actual bike and ismeant to accommodate a “smaller than average” rear end.As a final point, the display is best read when lookingdirectly at it. If you shift your head to another riding stance, you’ll have toshift the display too so you can actuallykeep on seeing it.
Summary
In conclusion, the Schwinn 140 Upright Exercise Bike is built well,silent, has good electronics, and is excellent value. If you’re acasual rider or just getting into afitness bike program, the Schwinn 140 Upright exercise bike may be the perfect pick for you. It features the exact quality construction and a number of thefeatures available in more costly products at anreasonable cost. If you’re a more seasoned rider or use your fitness bike for training (and your wallet willtolerate it), you might want to look into the Fitnex B50 Upright Exercise Bike as well.