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Home » Frame-Body Attachment » attachment of a composite shell to a spaceframe chassis |
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PARENT CATEGORY Frame-Body Attachment |
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LINKED PROFILES Augenbergs, Peter MIT Solar Electric Ve... Tesseract |
ARTICLE
attachment of a composite shell to a spaceframe chassis OCID cn00000376 |
LINKED CATEGORIES Frame-Body Attachment |
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attachment of a composite shell to a spaceframe chassis by Peter Augenbergs created 1/15/2003 submitted 1/15/2004 12:06:21 PM traditonally, its not easy to attach a 6'x16' body to a frame that is not much bigger than a 6' tall person, and have it hold up at highway speeds. outlined below is how the MIT Solar Electric Vehicle Team attaches the aerobody/array to the chassis. what we do is weld tabs to the top of our chassis, then make triangular-ish ribs, which are glued to the bellypan. we put a hardpoint at the top of the rib, and then bolt it to the tab. we have a half dozen of these, plus 4 mounts through hardpoints at the bottom of the chassis. if you do it this way, its really important that the ribs go all the way to the edge because the entire top shell's weight and aero forces act on the edge, so it needs to be as stiff as possible. we make our belly seam in the layup, and make our own quarter turn fasteners. its more or less a t-shaped bolt that you can turn from the outside and is attached to the belly, it intersects with a slot on the upper shell at a slot, and when turned 90 degerees either way, it locks the upper shell to the belly pan. we've been doing it the same way since Sunrayce 95, and have always had great success with it. 185 words | paugenbe
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