Tag Info

Hot answers tagged

22

For a standard bike in normal use you should not, from the seat, be able to touch the ground (without leaning, or except, perhaps, on extreme tip-toe). A standard diamond frame (with horizontal top bar), for road use, should be sized so that you can stand flat-footed over the top bar with a "comfortable" margin (but no more) between the bar and the stuff ...


6

Short answer: Height does matter (in fact, there are multiple "heights" which you can find out about in the long answer's links), but there are a ton of other factors (e.g. top tube length which is probably more important). The bike's geometry is what determines how well it works for you. Long answer: What you need is a bike fit (which can be done at most ...


6

There are some compelling reasons for filling vehicle tires with pure nitrogen in performance situations, but for bike tires it's just snake oil. There aren't substantial enough temperature fluctuations in a bike tire to justify the pressure consistency argument. It's also worth noting that the air you breathe and fill your tires with is more than ...


6

I think this should be possible, as long as your wife is happy in the navigator position and you are OK with being the bug-shield. Having the larger person on the back is difficult, but may be possible with unusual designs. I'm always banging on about how important bike fit is and a tandem is no different. Do make sure you try as many as possible before ...


5

Typically your feet should not be able to touch the ground flat when you're on the seat - it is a sign that your seat is too low (you may be able to touch the ground with your toes depending on your shoe size - I wear US 13 and this is possible for me). See this link for some guidelines, but typically you get a good starting position either by experience or ...


5

Bike shops have a special test-bikes to be lent for a whole day or even a weekend. I tested Specialized, Scott and RB for the whole weekend this way. You will pay them a refundable deposit (20-80% of price of the bike - depends on the shop). Some of them will charge you a little for cleaning/service or whatever. This may vary across the countries; I have ...


4

There are several advantages, most of which apply only marginally to bicycles. A nitrogen seller lists all of them, other sites list pros and cons. The key thing is that it's not about adding nitrogen so much as reducing oxygen, water and other gases. Nitrogen molecules are larger than water, oxygen and most others, so they percolate through tyres more ...


4

It sounds as though you have drop bars, and one of your measurements is to the brake hoods. Since those are independently attached to the handlebars, that measurement only tells you that something is off, not what it is (you have two measurements and three unknowns - the bar position in the stem, the left brake level position on the bar and the right brake ...


4

This typically means that your drop is too significant or your reach is too far. Try moving your stem up once spacer and replacing the stem with one that is 10 mm shorter. As other answers have noted, it would also be a good idea to get a professional bike fit since you've had chronic lower back pain for a number of years.


4

This depends highly on the particular model of the bike (which is due to factors like (effective) top tube length, bottom bracket height, wheel size, standover height, etc.) and your individual geometry (inseam, upper body length, arm length, leg length) and riding style (upright, prone, etc.) - the numbers don't really mean anything out of context. Even in ...


4

You should try a professional bike fit. Just because you are 179 cm doesn't mean a 56 is right for you (the sizing of a bike with a given number varies on the type of bike and manufacturer and model). Normally, when you switch to drop bars, you will be sore (but pain is different, and should be alarming, though going for a 40 minute ride while just ...


3

I often experienced lower back pain during and after rides on my roadie. Stretching helped me significantly. Try regularly stretching the muscles below, above and around your hip / bum, perhaps using hip-focussed yoga poses.


3

This is impossible to determine via the internet - the fit of a bike depends on inseam, arm length, and a multitude of other physical measurements as well as personal preference and the type of bike (there are large variations in types of mountain bikes even) and riding style. Read this article and this article for more details on what goes into bike ...


3

Bicycle sizing may vary by bicycle type, region, manufacturer, and material. And measurements typically are of a length of the frame (usually bottom bracket to top tube: How do I measure the size of my bicycle frame?). So it would not be surprising if this statement was true. Depending on the geometry of the frames, two bikes may have different "sizes" but ...


3

You really seem to have two questions: 1) As a heavier person, what should I look for when buying a bike? This has been handled a couple of times here, but the core answer is to stick with middle of the market components. If you buy low end, the components are poorly made and will break easily. If you buy high end, they will likely be ultralight, and ...


3

You should not be able to. Generally you want your leg fully extended and your foot parallel to the ground at the bottom of your stroke. As others have mentioned, there are allowances to that rule to increase maneuverability, which comes with having a lower saddle, but if you can touch the ground flat footed, and your pedal is 15-30 cm off the ground at the ...


2

I'm a road cyclist with a bit of experience, and like most of us, without ever having been a champion, so I trust my thoughts may be useful. If you find the position of the drops uncomfortable, this is perhaps due to your bike setup being wrong for your particular body shape. It could also be the result of a bike that is the wrong size for you, i.e., too ...


2

Concerning bike saddles : Sit on the edge of something hard like a public bench. You will notice there are two bones in your butt carrying your weight. Those are your sit bones and are meant to carry your weight. On a saddle you want these two sit bones to rest on the two bumps at the rear. Girls have sit bones spaced more than guys so you should select a ...


2

Since you are getting back into cycling, and have a lot of questions, you may want to find a good bike shop close to you. You can try out different bikes, and they can help fit the bike to you, which will make a huge difference in comfort. Even if you buy a used bike from craigslist, you would likely want to take it to a shop for a proper fitting and maybe a ...


2

The first and foremost measurement is effective toptube length. There are, of course, other deciding factors in how a bike fits, but effective toptube length plays the biggest factor in whether a bike is going to fit or not. Bikes are still measured in terms of seattube length which made some sense when many bikes had the same toptube length regardless of ...


2

You need to have a bike pro fit you, but you have some options. Test ride: drive some around in the parking lot to get a feel for the bike. A good shop will work with you and not just try to take your money. Demo a bike: find a dealer that will let you demo a bike - that is actually take a bike (or 2) on your local trails to ride. See this video by ...


2

The distinction between women's specific and regular bikes isn't a hard rule, and you don't need a women's specific bike for a woman. Many women use standard bicycles without any problems, though just like men, they may need to tweak stem length, handlebar height, saddle width and height and position (usually, women's geometry bikes have a combination of ...


1

If you want to use these brakes 1 fingered, I would recommend moving them to the inside of your shifters to remove the overlap with your middle finger. I have all my brakes set up like this and it works great.


1

Its not that complicated. Stand over the top tube of the bike you are interested in with both feet on flat ground. If you have about an inch of clearance, that bike should fit you fine -- then its just a matter of adjusting seat and handlebar height and maybe riding a few different bikes that "fit" like this to see which one feels better to you.


1

Your mileage is going to vary, and everyone is going to have different advice based on what worked for them. A professional fitting may be a very good idea. Also consider going to a doctor that specializes in this sort of thing.


1

Yea, baby, fit and geometry make all the difference on a bike. Without being too scientific here, the height of the saddle must be such that your leg is ALMOST but not quite fully extended when your pedal is at bottom of the stroke; there should be a very minor flex in the knee when your pedal is at bottom stroke and your ankle should be in a mid-flex ...


1

Usually handle bars have a set of grooves in the middle to grip onto the head stem. When these grooves are wider than the head stem it's easy - just center them so that the same amount is visible on each side. I guess you wouldn't be asking if it was that easy. Loosen the bars and slide them sideways to see the grooves, and make a mark with a pencil or ...


1

On the morning of triathlon competition, when sun comes up and air became hotter, you'll hear blowing tire every several minutes over racks with couple thousand bikes. So, if you don't want surprise in the race day, you can use dry nitrogen or even dry air for tires. Last year my tire blew up on the hot intersection on red light also. I don't think if ...


1

This might be overkill, but... Find the center of your stem and mark it near (or across) the clamp opening with the edge of a piece of masking tape. Find the easiest to measure location on your drop bar. This is usually a point-to-point area that is flat and that you can easily lay a rigid ruler of some sort across. Be sure your rule is aligned parallel ...


1

There are two items that need to be centered: Your handlebars must be centered in the stem. And, Your stem must be centered on the steer tube. Do those two things in that order. Centering your handlebars on the stem is the easy part. Eyeballing is usually enough. However, if you desire absolute perfection, simply find a point on the handlebars that is ...



Only top voted, non community-wiki answers of a minimum length are eligible