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Old 07-27-05, 01:15 PM   #1
Torellian
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Frame geometry?!?!

I've heard the term "frame geometry" before, and how different ones are better for different types of riding, but it's never explained. I'm assuming it relates to the angles of the tubes of the frame. But how does that affect riding performance?

I have 2 bikes: an old hybrid with no shocks that rides smooth, and a mountain bike that rides much rougher, and has front shocks. Both are chrom-oly. The angles of the frame's tubes seem about the same on both bikes. Maybe there's some slight difference I'm not seeing.

Can someone give me a simple explaination of how frame geometry affects riding comfort, and what angles to look for if I want a bike that doesn't make me feel the jolt of every bump?
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Old 07-27-05, 09:20 PM   #2
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It refers to the angles that the tubes of the bicycle frame meet. Look at the frame of a road bike, and the frame of a urban/dirt jumper bike. THe top tube is almost horizontal on the road bike, yet the top tube is at a much steeper angle on the urban bike. Different angles effect your riding in certain instances. The longer and more spread out geometry of a road bike allows you to be much more efficient than the short seat tubed and steep top tubed urban bike. Yet the urban bike will handle a jump far better.

You want to find a frame that fits your interests for riding.
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Old 07-28-05, 01:27 PM   #3
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Thank you! I guess it's not as complicated as mathematical geometry! Whew!
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