Bicycle size is an important consideration when buying an electric bicycle. Bicycles of the wrong size can cause discomfort and damage. Your electric bike is a huge investment, and you should definitely treat it like this! Knowing the correct bike size before buying is the best way to ensure efficiency, longer usage time and overall enjoyment. Let's see how to adjust the size of the electric bicycle correctly.
Are you a mountain biker or a commuter? Do you want to ride upright or aggressively? Mountain bikes, road bikes, and hybrid bikes all have slightly different sizes, such as 14 inch electric bike, 16 folding electric bike, 20 folding e bike and so on, so before you start trying to size your bike, make sure you know what the main purpose of the bike is. You may have thought about this a bit, so this should be an easy part.
Frame size is possibly the most important aspect in bike sizing. Reason being, once the frame size is set, that’s it. There is no turning back from there.
There are few ways that you can find the right size frame. The first way is to measure your inseam. Measuring your inseam can be done in a number of ways, but I find the easiest way is to grab a notebook. Once you've got your notebook, you'll need to stand against a wall. Then, place the notebook in between your upper thighs so you are straddling it (like you would be if you hopped on a bike). Leave the notebook in place on the wall and measure from the top of the notebook to the floor. This measurement is your inseam. It's generally a good idea to wear the shoes you'll be cycling in most frequently as this will probably affect the measurement.
Ideally, the next thing you want to do in terms of frame size is actually hop on the bike, or a similar style. This isn't always possible, but if you can you're checking that you can straddle the frame with your feet flat on the floor. If you have a traditional top tube that is parallel to the ground there should be about an inch or two of clearance.
Saddle height is also very important. Too high or too low and you won't bike as efficiently. To size this properly, take one of your feet and put it on the pedal at the bottom of the pedal stroke (it's lowest point). There should be a slight bend in your knee. Go for about 80-85% of full extension. When you hop on the bike, your knees shouldn't be coming up too much past the top tube. I'd recommend getting a quick release for your seat post because if anything moves on you it's much easier to adjust.
You also want to make sure your saddle tilt is set properly. Generally, the saddle should be flat (parallel to the ground). For cruisers and commuter bikes you might want the saddle tilted back a very little bit for a more upright ride. The opposite is true of mountain bikes. Tilt your seat forward slightly for a more aggressive feel.
Your upper body position is very important. If this is off, you could end up with a backache and tired arms. You’ll want a slight bend in your arms on any bike. Your posture will be affected based on the type of bike you’re riding. Comfort is key here. If you hop on the bike and five minutes later you’re already hurting, that’s a problem.
For mountain bikes and true road bikes, you’ll have a more significant bend in the back because they are more aggressive rides. If it is a commuter or urban bike, you should be more upright, almost like you’re sitting in a chair.