Project+1+Bike+Device

Work space for bike project

__Duties that must be started!--sign up__

//Drafting of model Develop presentation Present it//

each of these can/should have more than one person working on it __Decided:__ ** Clamp onto handelbar using tool Clear Polyurethane film for cover, with velcro straps to hold down the device Polyethylene for the body

Plastic Choices by Identification Code including if it's usable and why/why not: 1. PETE- No: Hydroscopic; absorbs water which reduces resiliency. 2. HDPE- Yes: Mainly strength. 3. PVC- Possibly: Cheap and versatile but a potential health hazard. 4. LDPE- Yes: Weaker but more resiliant. 5. PP- No: Degrades in UV. 6. PS- No: Too weak... styrofoam.

The main choice is Polyethylene with the density being the question. -Various Sources

Ethylene Propylene seems like a good possibilty; seems to have good weather resistance.
 * Options for Cushioning Materials**

Silicone Rubber could also be another possibility, though using it may be a little over the top (i.e. it can withstand incredible temperatures) []

Other possibilities include:Hydrogenated Nitrile rubber and Isoprene rubber

Overall, the Ethylene Propylene is probably best....some of the differences between these rubbers are too subtle to really make a difference.

check this link out: [] vinyl & polyurethane sheet also gives some info