I am haveing a hard time figureing out sizes
ok on bikes direct this link says http://www.bikesdirect.com/products/..._xiii.htm#size i should ride a 46 cm
but this link says a 54 http://www.bikesdirect.com/products/roadsizing.html im 5 foot 5 inches with my riding shoes on and a book under my crotch its like 30 to 31 inches |
It's because the Dawes Lightning has a sloping top tube. In the second link you provided it specifically says those measurements are for bikes with straight top tubes.
It states" (These are ball-park measurements are for most typical road bikes with straight cross bars/top tubes - please refer to the model-specific geometry before making a decision)" Personally I'm not sure how I would I would categorize you at 5'5" with a 31" cycling inseam... You may be better off at a bike shop. |
Originally Posted by windhchaser
(Post 14415095)
ok on bikes direct this link says http://www.bikesdirect.com/products/..._xiii.htm#size i should ride a 46 cm
but this link says a 54 http://www.bikesdirect.com/products/roadsizing.html im 5 foot 5 inches with my riding shoes on and a book under my crotch its like 30 to 31 inches http://www.ebicycles.com/bicycle-tools/saddle-height |
what about the Denali?
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Originally Posted by acidfast7
(Post 14415283)
what about the Denali?
OP- just save up a bit and buy from the LBS. They will be able to eyeball your positioning and make adjustments to fine tune the bike to you. |
Originally Posted by no1mad
(Post 14415766)
OP- just save up a bit and buy from the LBS. They will be able to eyeball your positioning and make adjustments to fine tune the bike to you.
|
While stand over height is an important measurement, there are a whole lot more things that you may not be aware of that goes towards a proper fit. The frame itself will get you close, but then the following can be 'tweaked' for fit/comfort:
-seat post height -saddle positioning on the rails -saddle tilt -crank arm length -stem length -stem angle -width of the handlebars -sweep and/or rise of the handlebars |
Originally Posted by windhchaser
(Post 14415095)
ok on bikes direct this link says http://www.bikesdirect.com/products/..._xiii.htm#size i should ride a 46 cm
but this link says a 54 http://www.bikesdirect.com/products/roadsizing.html im 5 foot 5 inches with my riding shoes on and a book under my crotch its like 30 to 31 inches Try this on for size. |
im just researching now.. Im crazy as hell on buying something. Like i said in another post it took me many months to finally pick my camera. And at the end it was so close between a canon and the sony i got. My denaili is a odd duck its says its 22.5 inches and it feels like its my corect size. Top bar may be a tad high but it feels comfy matter fact i think i have to raise the seat. Ps took me forever to pick my mp3 player to .Maybe im ocd or something
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Originally Posted by windhchaser
(Post 14417278)
iPs took me forever to pick my mp3 player to .Maybe im ocd or something
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I'm about the same size as the OP and my bikes range from 50cm to 54cm, but they all fit the same. The top tube length, whether it's sloping or straight, tube angles, spacers under the stem, seat back position, etc... all play an important role in fit too. When I buy a new bike, I determine fit with 3 measurements:
1) a standover height of around 77cm at the middle of the top tube 2) 62cm horizontal distance from the center of the handlebars to the center of the seat post 3) a 2cm drop from the top of the saddle to the top of the handlebars with at most 4cm of spacers under the stem (I prefer 0-2cm, but will go up to 4 if I have to). Once I have those to within 0.5cm or so, I know the bike will fit. On some frames (like my crosscheck), that happens with the 50cm frame size. On others (like my audax bike), it's 54cm. Most bikes have frame specs that let you calculate these measurements by using a little trigonometry. I bought my last 2 bikes based on calculated size only (didn't test ride them), and they fit perfectly. |
Originally Posted by jeffpoulin
(Post 14428368)
I'm about the same size as the OP and my bikes range from 50cm to 54cm, but they all fit the same. The top tube length, whether it's sloping or straight, tube angles, spacers under the stem, seat back position, etc... all play an important role in fit too. When I buy a new bike, I determine fit with 3 measurements:
1) a standover height of around 77cm at the middle of the top tube 2) 62cm horizontal distance from the center of the handlebars to the center of the seat post 3) a 2cm drop from the top of the saddle to the top of the handlebars with at most 4cm of spacers under the stem (I prefer 0-2cm, but will go up to 4 if I have to). Once I have those to within 0.5cm or so, I know the bike will fit. On some frames (like my crosscheck), that happens with the 50cm frame size. On others (like my audax bike), it's 54cm. Most bikes have frame specs that let you calculate these measurements by using a little trigonometry. I bought my last 2 bikes based on calculated size only (didn't test ride them), and they fit perfectly. |
the bike im riding now is 22.5 inches.And it feel right to me. but every chart says it is to big
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Originally Posted by no1mad
(Post 14428402)
How long did it take you to be able to do this, as in how many frames? OP is on his second big box BSO and is currently contemplating his first BD purchase. I'm sure it'd ease his concerns some if he knew he could nail the fit this time.
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the only part that dont fit is the top bar is a bit high.as i am touching it when i straddle the bike. i pretty much need to buy online since my budget is still low
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there are the 2 bikes im looking at http://www.bikesdirect.com/products/...ntnoir_xii.htm and http://www.bikesdirect.com/products/...record_xii.htm
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Then save up until you can buy at the LBS. Otherwise, you run the risk of experiencing the same thing over again....
Hold on a sec, I just remembered you claim to be a tad short for guys, right? Like 5'5"? Don't take this wrong way, but maybe you ought to check out the ladies frames- a bunch of guys ride 'em (called 'mixte' frames). Just an option to consider. |
Originally Posted by no1mad
(Post 14428468)
Then save up until you can buy at the LBS. Otherwise, you run the risk of experiencing the same thing over again....
And I'm not sure if I've voiced this in another of your threads, but I touch the top tube on my road bike. Having 1-2" of standover clearance is way overrated. |
Originally Posted by no1mad
(Post 14428468)
Then save up until you can buy at the LBS. Otherwise, you run the risk of experiencing the same thing over again....
Hold on a sec, I just remembered you claim to be a tad short for guys, right? Like 5'5"? Don't take this wrong way, but maybe you ought to check out the ladies frames- a bunch of guys ride 'em (called 'mixte' frames). Just an option to consider. |
Originally Posted by ThermionicScott
(Post 14428493)
+1. Keep working on that $1000 goal.
And I'm not sure if I've voiced this in another of your threads, but I touch the top tube on my road bike. Having 1-2" of standover clearance is way overrated. |
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