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Bike Frame Sizes, Geometry, Angles and All That!
December 23, 2011
10:05 am
Sam
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Forum Posts: 82
Member Since:
June 1, 2009
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For sure, all bike riders with exactly the same height will require different bicycle frames. On this article we discuss the importance of the geometry when it comes to bike frames. This is the place to stop if you're looking for bicycle frame dimensions.

December 27, 2011
10:19 am
Peggybird
Guest

Very helpful and positive forum, I have already learned a lot from just reading?Peggybird

December 27, 2011
10:19 am
Melissa
Guest

Looking at a used 19″ Kona Four full suspension mountain bike for my husband. He’s 5’11 3/4″ with a 32″ inseam. Will this be a good fit? If not, what size frame is recommended?

December 27, 2011
10:20 am
rhonda bodkin
Guest

I’m 5 ft 3 in and am in proportion. I do not like to sit upright and like to lean forward a bit on a bike. What size frame would be appropriate? i am a recreational rider.

December 27, 2011
10:21 am
Sam
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Forum Posts: 82
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June 1, 2009
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Hi rhonda, you just have to move your saddle a bit forward and that's it. Frame size will be the same.

December 27, 2011
10:22 am
Paul
Guest

Try the above frame size chart from Dave Moulton, I think it is really good! For instance, I have a 32″ inseam, so should theoretically use a 54cm bike. But I’m 5’11″ tall (short legs, long torso), so 54cm is too small for me. By interpolating between the two, I found that a 56cm frame should be about right, and guess what…..it was! :)

December 27, 2011
10:22 am
rick d
Guest

Im 6’4″ 220lbs inseam 37ins in shoes I am looking at Specialized Roubaix.The store recommends 58cm is this the best size or is this to small?I prefer a more upright position.I am trying to extend my ride distance so I am looking for comfort and speed over the long haul. thanks Rick

December 27, 2011
10:23 am
Brice
Guest

I am 6feet 4″ and am looking to buy a mountain bike. It will be mostly used for around my neighbourhood. My general trails will see me cover road, grass, timber decking, a bit of dirt etc…I am looking at a 20″ 2006 Kona Blast Hardtail. It is a used bike but in very good condition. WIll this suit me size wise??? Thanks to anyone who can help..

December 27, 2011
10:24 am
Rich
Guest

I’m 5’9″ but have a 30″ inseam. Sooo, long on top and short on bottom. Sizing charts say I should be on a 51 or 52 cm bike, but that doesn’t make sense to me. I think a 54 would be better in the long run with a longer top tube. Your thoughts…also, what length stem??

December 27, 2011
10:31 am
matthew lanese
Guest

i’m 5’8″ with a 30″ inseam i’m looking for a road bike but i have no idea what size frame i need. i want it for commuting through a town full of hills. what do you recommend?

December 27, 2011
10:32 am
Sam
Admin
Forum Posts: 82
Member Since:
June 1, 2009
Offline

Hi Matthew,

if you are looking at a slopping tup tube frame it will probably come in small, medium and large sizes. You would need either a small or medium, depending on you body length. Go to your local bike shop and try a few bikes and ask what they would recommend.

A smaller frame can be adjusted to fit, a frame that is too large; you just cant ride it.

December 27, 2011
10:33 am
vermonique
Guest

anyone guys has a 2006 orbea orca not 2007 etc with excellent to mint condition with sram red, dura ace or camgnola components please contact im looking for one all over and want to replace the one i had that got stolen no beauty like orbea orca 2006 light gorgeous please frame fork or complete bike please email me thanks

December 27, 2011
10:33 am
Marc
Guest

I Matthew I am the same size as you and I want to buy a giant.
What size did you choose?

February 24, 2012
9:31 pm
Txirrindulari
Member
Forum Posts: 19
Member Since:
February 24, 2012
Offline

@ Rhonda. I am 5'6" and have a 50cm Trek 1000 and 52cm MOTOBECANE VENT NOIR. There is no way for us to tell what you need as each manufacturere has different ways to meassure. Like shoes, you have to try what works for you. I would say 48-49cm.

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