Q. when i was a KID we got on the bike and our handle bars were up so high,and we sat on the bike..now..I just got a new specialized rock-hpr
and I have to bend over to grab the bars,why is this
and I have to bend over to grab the bars,why is this
Answer
Cruiser style bikes still have an upright seating position. If you are just riding slowly around town that position is fine. For actual mountain biking the trail will dictate the shifting of weight forward, backward, up down, so the handlebars are lower so that you can do this easily. Also if you sat bolt upright on a mountain bike your back would absorb all the shock from all the bumps. Here is some text from Sheldon Brown on the subject:
Some back-pain sufferers modify their bicycles with extra-high handlebars so that they can sit bolt upright, with their spines straight. This is actually counterproductive in most cases, because a straight spine has no way to "give" when the bike hits bumps. Road irregularities will jam the vertebrae together, often aggravating existing back problems. The bolt-upright posture is comfortable if you're sitting stationary on the bike, but is not suitable for riding much faster than a brisk walk. Riders who for some reason require such a position should use some form of suspension...a sprung saddle at the very least.
And if you look at motocross bikes they have lower handlebars, you are not sitting upright on them like some Harley cruiser.
Cruiser style bikes still have an upright seating position. If you are just riding slowly around town that position is fine. For actual mountain biking the trail will dictate the shifting of weight forward, backward, up down, so the handlebars are lower so that you can do this easily. Also if you sat bolt upright on a mountain bike your back would absorb all the shock from all the bumps. Here is some text from Sheldon Brown on the subject:
Some back-pain sufferers modify their bicycles with extra-high handlebars so that they can sit bolt upright, with their spines straight. This is actually counterproductive in most cases, because a straight spine has no way to "give" when the bike hits bumps. Road irregularities will jam the vertebrae together, often aggravating existing back problems. The bolt-upright posture is comfortable if you're sitting stationary on the bike, but is not suitable for riding much faster than a brisk walk. Riders who for some reason require such a position should use some form of suspension...a sprung saddle at the very least.
And if you look at motocross bikes they have lower handlebars, you are not sitting upright on them like some Harley cruiser.
HOW DO I KNOW WHAT SIZE BIKE TO BUY FOR MYSELF? I'M CONFUSED ON THE "INCHES" ISSUE?
RoadTrippi
I'm 5'4 tall w/ a 32" inseam and I'm looking at bikes online but I have no clue what to size to buy. Thanks for any help I can get!
Answer
The Toys R Us answer hit a nerve with me.....Never buy a bike at Toys R us! those are made for kids and they couldnt be cheaper. That response is obviously from someone who knows very little about cycling too.
With a 32" inseam you could ride any road bike in a 54cm to a 56cm in most brands but not all. Every manufacturer makes similar models but not all will fit you the same. In a mountain bike a 26" wheel is the most common wheel size out there and this is NOT frame size, this is wheel only (a 24" wheel size on ANY bike would be too small for you and is a KIDS bike, with the exception of BMX 24" wheels and such)
With a 32" inseam you could even go as far as a 29" wheel size in a medium frame size in nearly any make too. I have a 30" inseam and ride a 17" in mountain and a 54cm in road. Hybrid/comfort bikes usually fit me with a 17-18" frame and even a 19" on some models.
For a cruiser, nearly anyone over 5'1" up can ride one with some adjustments. If you can place your feet flat on the ground while seated on the saddle the seat is TOO LOW!
As for the inches issue: it is measured from the top of the seat post tube down to the center bolt of the crank on the bike and this is how mountain and hybrid/comfort bikes are measured. Road bikes (racing) are measured the same way but in Centimeters and there is also the top tube length to consider when buying a road bike too. It is generally 1-2 cm longer than the seat tube length in mens bikes and less in womens bikes.
The Toys R Us answer hit a nerve with me.....Never buy a bike at Toys R us! those are made for kids and they couldnt be cheaper. That response is obviously from someone who knows very little about cycling too.
With a 32" inseam you could ride any road bike in a 54cm to a 56cm in most brands but not all. Every manufacturer makes similar models but not all will fit you the same. In a mountain bike a 26" wheel is the most common wheel size out there and this is NOT frame size, this is wheel only (a 24" wheel size on ANY bike would be too small for you and is a KIDS bike, with the exception of BMX 24" wheels and such)
With a 32" inseam you could even go as far as a 29" wheel size in a medium frame size in nearly any make too. I have a 30" inseam and ride a 17" in mountain and a 54cm in road. Hybrid/comfort bikes usually fit me with a 17-18" frame and even a 19" on some models.
For a cruiser, nearly anyone over 5'1" up can ride one with some adjustments. If you can place your feet flat on the ground while seated on the saddle the seat is TOO LOW!
As for the inches issue: it is measured from the top of the seat post tube down to the center bolt of the crank on the bike and this is how mountain and hybrid/comfort bikes are measured. Road bikes (racing) are measured the same way but in Centimeters and there is also the top tube length to consider when buying a road bike too. It is generally 1-2 cm longer than the seat tube length in mens bikes and less in womens bikes.
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Title Post: why do mountain bikers lean over so far why not sit up straight like you were riding a motercycle?
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