Bike Forums - Fixie Measurement

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Fixie Measurement

Hey everyone! I am new to the community and just need some good starting tips. I really wanted to talk to other riders who know what they are doing, because I am new. I will be posting various topics of the different aspects that I would like to know about.

For now, I am having trouble finding the appropriate frame for my build. Should I be concerned with the top tube more than the seat tube?... I am 5 feet and 5 inches. Thanks so much you guys!

- Nicole, 22, San Diego

What's your inseam, crotch to the floor?

Top tube matters a lot more than seat tube for a bike that you plan on riding in the street.

Quote:

Originally Posted by nicoleride (Post 5391419)

For now, I am having trouble finding the appropriate frame for my build.

What kind of riding are you going to be doing?

I have short legs and a long body, and so I ride a frame one size smaller than one would expect for my height.
I make up for the smallness with a setback seatpost.

Anyway, you have to stand over the bike.

The largest frame over which you can comfortably stand, or the next smaller frame should do it.

The real fit comes from seat post, saddle, steerer tube height (if threadless), stem and handlebars.

My inseam is 62cm...

yeah crotch to floor is definitely 62 cm...

hello 1fluffhead..
I am going to basically be commuting from my house to school, i'm wasting sooo much money on gas.. no stunt riding.. or any trick riding for me.. just simple fun riding with a bike that doesnt involve coasting

check this thread http://bikeforums.net/showthread.php?t=225713 Lots of good knowledge here. I would suggest getting a flip flop rear hub so that way you can go SS if you decide fixed is not for you.

Quote:

Originally Posted by nicoleride (Post 5393641)

yeah crotch to floor is definitely 62 cm...

You might want to double-check that.. for an 'average' woman of 5"4ish, the crotch to floor measurement is closer to 30" (76 cm). I'm not sure how statistically accurate this website is, but the numbers you provided (5"5',62cm) seemed way off: Body proportion table

Try measuring again as described on http://www.coloradocyclist.com/bikefit:

Quote:

Originally Posted by www.coloradocyclist.com

To determine your proper frame size, you'll first need to get an accurate inseam measurement . Stand with your back against a wall, your bare feet 6" apart on a hard floor, looking straight ahead. Place a book or carpenter's square between your legs with one edge against the wall, and pull it up firmly into your crotch, simulating the pressure of your saddle while riding. Have a helper measure from the top edge of the book to the floor, in centimeters. (You can convert inches to centimeters by multiplying inches by 2.54.) Repeat two or three times, for consistency, and average the results to get your inseam length.

To take your inseam measurement you should use a level and press it into your crotch with a bit of pressure and then measure to the floor. However, top tube is more important for comfort.

Come on guys! For a girl, it's supposed to be "down there" to floor!