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  1. #1
    Senior Member
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    Jun 2007
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    Geometry of a seat tube on a beach bike

    As i start to learn more about bikes, frames, etc I am paying more and more attention to my bike. It is a common beach bike but loads of fun to ride. I noticed that my seat tube is leans back much more than seat tubes of other bikes, maybe 20-25 degrees from being vertical. What effect does this have on the ergonomics of cycling? performance of the bike?

  2. #2
    Senior Member
    Join Date
    Mar 2007
    Location
    central AZ Prescott Valley
    My Bikes
    Giant Simple 7
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    I think cruiser bikes have that relaxed geometry with a longer wheelbase so you can sit up more erect and enjoy the scenery. My bike is a cruiser/mt. bike hybrid (Giant Suede) with that type seat that slants back and is lower to the ground so you can touch your toes to the ground when stopped. I love the curviness of many of the cruiser frames because they are pleasing to the eye.

    A Trek book I have shows cruisers like Wasabi, have a 72 -72.5 degree seat angle. Bikes like FX or Soho show 74 degree. Doesn't seem like that much difference but what do I know?

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