leigh anderson
enjoyed your website and got your comment on dragonsden/ajason calendar. youtube ajason cbc dragonsden for breif description.
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Brian Paul Wiegand
I believe someone associated with this website raised a question about the sizing of the hub motors and brakes that would be required for the open source car (OScar). The OSCar site specifies a vehicle target weight of 1000 kg (2204.6 lb). This is probably way too low for a vehicle of dimensions quoted: loa = 4 m (13.1 ft), width = 1.75 m (5.74 ft), height = 1.55 m (5.08 ft). For a sporty but economical car of conventional configuration (frt eng., fwd) the weight more likely would be: (7.9 lb/ft-3 x (13.1 x 5.74 x 5.08)ft-3) - 387.3 lb = 2638 lb. Of course, for acceleration and braking one must consider the effective mass, which will be a good deal greater than that indicated by 2638 lb. Also the maximum speed, 145 kph (90.1 mph) also comes into play....
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Adam
http://www.opennovation.org/
Neat site! I think mine is complementary. I focus on the software for mechanical design, you seem to focus on the hardware.
In the near future, I'll have a FreeCAD package in my Ubuntu repository. Maybe that could be a good platform for designing the systems you have in mind? OpenCASCADE already comes with a "bottle" example which works in FreeCAD and would complement your bottle opener well.
-Adam
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