How to Shop for a Bike for Your Kid - Consumer Reports

How to Adjust Your Bike for a Proper Fit

Regardless of where you purchase your kid’s bike, it’s critical to adjust it for a proper fit. If you’re skilled with wrenches and have a deep understanding of bike parts and human anthropometry, you can try this yourself—but for the most comfortable fit and safest results, you’re probably better off entrusting the process to a good bike shop. 

Goto Seven Running to know more.

As we mentioned above, the bike might fit your child perfectly straight out of the box, but oftentimes bicycles need to be adjusted to fit the rider. Or, if you’re buying used, perhaps you want to change a worn-out saddle, or further refine the bike for safety and comfort.  Here are the most important adjustments to consider:

• Seatpost: The seatpost is a tube of metal that telescopes up and down in the frame to adjust the saddle to the proper height for pedaling. Proper seat height allows your child’s knees to have a slight bend at full extension. If their stroke is too short, they’re getting less power out of every revolution. And if they’re sitting too low, that can mean their knees will rise higher than is comfortable.
  
  One caveat: Rypkowski says that for newer or less confident riders, your child might not be ready for the proper seat height because sliding off the seat to stand flat-footed could be a big jump for them. Her advice for less-experienced riders is to start with a lower saddle and just adjust it up a little bit at a time as your child gains confidence.
  
  Adjusting the seatpost is easy to do. Take a permanent marker and draw a line on the seatpost for a reference point. Open the quick-release lever (that uses friction to hold the post in place) and slide the seatpost up just a hair; be sure the seat is aligned straight, with the nose of the saddle directly over the top tube of the frame, then close the quick release.
  
• Saddle: Burton Avery is Cannondale’s senior product manager for their kids’ products. He says that just like for adults, “the No. 1 thing that you should consider changing when anyone buys a bike is the saddle.” The best analogy: shoes. You have to try them on to know they fit, no matter if you’re a child or an adult. Specialized, Woom, and Cannondale all spec far narrower and shorter saddles for kids than you’ll find on adult bikes.
  
  One telltale sign that your kid’s seat is too wide is if you see them inching far forward on the seat, riding the nose rather than the paddle portion. That could mean it’s too far for your kid to reach the handlebars, or it could mean the seat’s too wide, which hurts their bottom and also forces their legs to splay wider while pedaling, potentially causing knee pain.
• Stem: Your bike will come with a stem (the linkage between the front of the frame and the handlebars) that’s replaceable, so you can make it shorter if your child has to reach too far—or longer so that the reach isn’t cramped as your kid grows. A stem has an adjustable clamp for the handlebars, which are also replaceable because the right width and sweep can further help your kid get comfy.
• Brakes: There are two main types of brakes on children’s bikes: coaster brakes and hand brakes, although some bikes have both. Part of this is regulatory and beyond the control of manufacturers; they may have to spec a coaster brake because there are legacy laws governing how bikes are sold.
  
  Coaster brakes work by pedaling backward. Lots of bikes for smaller children have them. Hand brakes operate via a lever attached to the handlebar, and most bikes for children only brake the rear wheel. There are two types of hand brakes as well. Disc brakes tend to have more power and are a bit more expensive, and work better in all kinds of weather. Rim brakes clamp against the wheel’s rim and may be less potent, though they frequently offer at least the same level of modulation as disc brakes. If your child’s bike has lever-actuated brakes, those levers most likely have a reach adjustment. This brings the lever closer to the handlebar, so it’s easier for smaller hands to grab, which is critical for safety. If the bike you purchased doesn’t have this feature, a bike shop can swap out the levers for adjustable ones.
• Bike shifters: As with brakes, your child needs to be able to easily operate their bike shifters. Avery at Cannondale says bike makers are increasingly building bikes with low-effort shifters, meaning the mechanism isn’t as stiff as in adult bikes. One expert we spoke to says you want to hold a bike statically and watch to see whether your child can easily operate the brake levers and shifters. Again, the local shop should make this evaluation. Know that, like brake reach adjustment, shifters can be repositioned for better leverage for your kid to use.
• Tires: Knobby tires might look cool, but they add friction. Cannondale’s Avery says that his brand has gone to either a tire with a very low knob pattern, with fewer cuts (called sipes), or to one with no tread pattern at all, because this reduces rolling resistance, so it’s easier for a child to keep up with their parents. He says if you buy a used bike for your child that has a tall knob, take it to a bike shop and swap the tires for something that rolls more quickly.
• Weight: A general rule for kids’ bikes is that the bicycle should not tilt the scales at more than a third to about half of your child’s weight. The younger your kid is, the harder it will be to find a bike that’s light enough. 

I have three small kids with ages ranging between 3–9 years old.. and we currently own no fewer than five children’s bicycles.

Bicycling is one of the most basic and fun activities that kids can do for sports and for commuting. Where I live, bicycling liberates kids from about 7 years old to independently pedal to school and sports class, join the rest of the neighbourhood kids to go to the local supermarket, playgrounds, library.

If you start choosing a bicycle for your child, there’s quite a choice — from 12'’ wheel size balance bikes to 26'’ teenagers bikes with prices from 99EUR supermarket bikes to EUR electric-assist kids mountain bike.

Over the last 7 years, we’ve bought and used 7 different kids bikes. We’ve done research and made mistakes. We’ve also hit the jackpot with a few bikes.

Here’s what we’ve learned..

Start on a balance bike

The best way for small kids to learn how to bicycle is to use a balance bike.

The best age to learn bicycling on a balance bike is as soon as the child is comfortable running and jumping. We’ve put all our kids on the balance bike when they where about 2 years old.

The best balance bikes are the ones that are light and have a low minimum seat height to allow practicing as early as possible.

Both my daughters were riding the balance bike comfortably and rolling around without their feet touching the ground by the time were 3 years old and my son was rolling around comfortably on the pedal-less bike at just a little over 2 years old and switched to a pedal-bike a few months after turning 3.

Stabiliser wheels on a “normal” pedal bike make learning slower for kids, since the child is leaning on the stabiliser wheels and is not actively balancing the bike. Also — starting on a pedal bike means that the newbie bicyclist needs to learn balancing AND pedalling at the same time.

A daughter of a family friend started learning on a pedal bike with stabiliser wheels and while she is taller and more athletic compared to my daughters, it took her longer to learn to comfortably bicycle and she was a less confident bicyclist in the beginning.

Fit beats spec

The most important thing about your child’s bicycle is whether they fit well on it. This means being able to easily get on and off the bike, having a comfortable and natural position while riding and having the reach to do tight turns, pull the brakes and switch the gears.

This is especially crucial with smaller kids (3–5 years old), since they are less experienced and clumsier. Young kids also grow the fastest relative to their size, so there’s a temptation to buy a bigger bike.

The mistake I made was buying a bike that was just slightly too big for my second child. I bought it, since it was a nice bike. I thought that she’d grow into the bike quickly anyway and skipping one wheel size would mean she can use the fancy bike for longer.

The result was that my daughter developed a fear of her bike — it was hard to start and stop riding on due to the frame size. This discouraged her from biking and she definitely biked less than she would have done on a well-fitting bike.

At minimum, check the height of the child and their inseam height against the bike’s fit specification (most respectable brands have a nice table). If possible, I strongly recommend having the child try riding the bike. That’s especially true, if the child is in the lower end of the size that fits the bike.

If the bike you want is even “just a little” too big .. I recommend buying another smaller bike that fits well. Even if it’s used, or less fancy.

For more information, please visit Kids Bicycles.

Beware of “supermarket” brands

Low-price “supermarket” children’s bicycles can be incredibly heavy and have sneaky hard to spot problems with fit — brake levers not meant for small hands, too wide “q-factor” (width between pedals) for small legs, too short crank length, etc.

When looking for our first kids bike, I saw a cheap starter bike + stabiliser wheels meant for 3-year olds to learn bicycling that weighed about 10 kilograms. We ended up buying a 99EUR balance for our daughter that weighs a smidge under 2kg! That’s a weight difference of 5 times. Extra 8kg is a huge difference for a 3-year old to lift and carry. That 99EUR bike has served all our 3 kids very well.

You can find a good bicycle weight reference by looking at bikes from reputable bicycle manufacturers, especially manufacturers that specialise on kids bikes. Don’t buy a bike that’s significantly heavier than the typical “good brand” bikes, especially for pre-school kids.

It’s harder to evaluate other important parts of the “bike fit” — reaching the brake levers comfortably, having a suitable q-factor and crank length, saddle position relative to pedals. Buying from a well-known bicycle brand or from a brand specialising on kids bikes is the most likely way to get a good fit.

Used is totally fine

Kids grow out of their bikes quickly — usually within 2 years in the pre-school age and 3–4 years later on. This means that there are a lot kids bikes sold on the second-hand market.

Kids bicycles are usually quite simple to maintain and fix, so even if the used bike needs a bit of maintenance or tuning, chances are it’s cheap.

We’ve bought two of our kids bikes second hand. This has allowed us to get a better bike than we would have otherwise bought. In both cases we bough from a private seller on an internet marketplace and it worked out well.

Avoid fancy tech

There are some really exciting fancy tech on kids bikes, such as carbon fiber fork or air suspension forks, oil-actuated disk brakes, tubeless tires. There’s even a balance bike with a carbon fiber frame!

I recommend seriously considering if you need this fancy technology. It can be fragile and hard to maintain.

I bought a bike for my 5 year old with an air suspension fork and disk brakes and have now had to fix bent disk rotors twice as well as spending several hours doing maintenance on the air fork.

We’ve never had issues with rigid aluminium forks and rim brakes. There’s absolutely zero noticeable performance difference for my 5 year old kids from having the disk brakes and air spring.

If I could fo back, I would choose a lightweight, simple to maintain and as durable as possible solution for the kids bike.

There is some tech that is worth having, though, in my experience. An internal gear hub and belt drive can be more expensive, but will require much less maintenance than a chain, cassette and derailleur system.

Kid fits the bike vs bike fits the kid

My 6 year old daughter most likely wanted a pink bicycle with a comfy seating position, a wicker basket at the front and ribbons hanging out from the edges of the handlebar. I mean — she didn’t know what she wanted, but in my mind, this bike would have fit her personality.

I, her father, on the other hand wanted a bicycle for her that I myself would have loved as a 6 year old boy — a cool aggressive mountain bike with suspension and thick tires and aggressive stickers.

So — we “agreed” that we will buy her the fancy mountain bike with chunky tires and an aggressive riding position.

Of course it turned out that she was uncomfortable on the aggressive bike and didn’t really care about the chunky tires and suspension. We ended up getting her the next size bike sooner than she would have needed it and loaned the mountain bike to his nephew who is a 6 year old boy that loves aggressive chunky bikes with suspension.

My learning from it is that it’s not only important that the kid fits on the bike. It’s also important that the bike fits the kid :).

If you are looking for more details, kindly visit E-Bike.