presentation+info



DRAWINGS OF MODEL:



presentation info: //Alex//:.
 * Absorption**://Material//: Ethylene Propylene Diene Monomer //Material Cost (unit)//:$882.87 per .375THK X 3FT X 25FT piece according to [] //Source from which material is obtained:// [|www.professionalplastics.com] //Reasons for using//: Weather resistant, UV light resistant, temperature resistant(-50 to 160 C),tensile strength(7 to 21 MPa). This data was obtained at [] and at [|this website which has a really long URL.] //Use in Bike Device//: Serves to cushion the electronic device held by the device which we are designing //Specifics//:Is held onto the base probably by some sort of adhesive material (this [|adhesive] seems to be pretty good), it most likely will fill the space in between the slots used to fit the velcro straps through. Dimensions are currently unknown
 * Base**://Material//:Polyethylene (high density) //Material Cost (unit)//:could not find S//ource from which material is obtained//:also could not find,--use www.professionalplastics.com if this information is required... //Reasons for using//:temperature resistant(-100 C to 120 C), tensile strength(4550 psi), hardness (SD65). Info obtained at [] //Use in Bike Device//:Serves as the base in which the electronic device can be laid on //Specifics//:Is rectangular, with four slots near the edges which allow velcro straps(attached to the film cover) to pass through. One of the sides has a jutting piece of plastic which is used to ensure that the electronic device is held in properly. A clamp also is attached to the back of the base.Dimensions are also currently unknown

NOTE: Unfortunately, the polyethylene has poor UV resistance. . . though its kind of too late to turn back now. Using titanium dioxide in the plastic does have some UV resistant properties though I am unsure to as how this works.

Venkat: The dimensions of a 6th generation iPod classic are: 4.1 inches wide x 2.4 inches x 0.41 inches, and that of the iPhone are: 4.5 x 2.4 x 0.46 inches. So we should make the device able to support something about that size and possibly bigger. // " The term polyethylene describes a huge family of resins obtained by polymerizing ethylene gas, H2C=CH2, and it is by far the largest volume commercial polymer. This thermoplastic is available in a range of flexibilities and other properties depending on the production process, with high density materials being the most rigid. Polyethylene can be formed by a wide variety of thermoplastic processing methods and is particularly useful where moisture resistance and low cost are required. Low density polyethylene typically has a density value ranging from 0.91 to 0.925 g/cm³, linear low density polyethylene is in the range of 0.918 to 0.94 g/cm³, while high density polyethylene ranges from 0.935 to 0.96 g/cm³ and above."//
 * COVER**: Clear polyethylene film seems to be a good choice for a cover. It is available in rolls at: []. [|HDPE][|, LDPE], and LLDPE would probably be ideal for our use (http://www.ides.com/generics/PE/PE_applications.htm). There's more info available about each of these if we want to include it in the presentation at this link: http://www.ides.com/generics/PE/PE_features.htm. And here's some random information about polyethene film in general:
 * STRAP**: Velcro comes in different rolls of “hooks” and “loops” which are purchased separately and then put together. These are available at: http://www.professionalplastics.com/cgi-bin/pp.pl?pgm=co_disp&func=displ&strfnbr=3&prrfnbr=100298&sesent=0,0&search_id=278801.