Saturday, May 22, 2010

Looking Back: Frame

1st. We chose 4130 chromoly steel for its weight to strength ratio.

2nd. Built and tested a CAD model.
-We did FEM analysis and it underwent several modifications.

3rd. Building a full scale PVC model.

- It showed improvements we did make to accommodate our largest driver.


4th. Cutting and welding the frame.

- We cut and notched the frame, then created a wooden jig to assemble the frame on. We continued welding until straight through May.


Future recommendations would just be starting early and getting a second TIG welder.

Wednesday, April 28, 2010

GearBox

When two 53lbs blocks of aluminum and master programmer Luke meet the result, milling greatness.












Final weight about 10lbs.

Tuesday, April 27, 2010

Design Report

Due April 29.

COMMENT:
We recommend that you bring a printed copy of your design report to the competition and proof of submission.

Saturday, April 10, 2010

Closed Cell Foam


Polyethylene Foam

Foam Types: Polyethylene Foam
Standard Sizes: Full, Half
Heights: 1/4", 1/2", 3/4", 1", 1-1/2" and 2"




Features

As closed cell foam sheets or any other form it comes in, polyethylene is a very strong and resilient material which, as one of many types of closed cell foam, is ideally suited for use in many different regards. Some of the most common uses of polyethylene sheets include shock-absorbing, vibration-dampening, insulating, barriers and polyethylene foam roll styles used as buoyancy components. Polyethylene closed cell foam is an excellent material for cushioning products in packaging applications, especially in the form of polyethylene foam sheets . The excellent buoyancy as well as durability of Polyethylene foam allows it to be used in flotation equipment,and other nautical products. Additionally, polyethylene tubes can be used for a number of other purposes, including irrigation tubing and resisting acids and alkalines.

Details

* Closed cell chemically crosslinked polyethylene foam
* Lightweight
* Shatter proof
* Cost-effective
* Easy to fabricate
* Non-dusting
* Excellent buoyancy
* Superb strength, and tear resistance
* High shock absorption
* Flexibility
* Impervious to mildew, mold, rot, and bacteria Superior chemical & grease resistance

Friday, April 9, 2010

Gearing Up

Gear Box - approx CNC mill time 45 hours

Floatation - Steps
  1. Rough Shape
  2. Contact Cement
  3. Attach to skid plate
  4. Attach to frame
  5. Shape pefectly
  6. Heat seal
  7. Cover
  8. Don't sink!

    Wednesday, February 17, 2010

    Tires

    Carlisle Tru Power AT 26/12-12


    23/8.5-12   $76.2517 BLK 4523301
    23/10.5-12   $83.9824 BLK 4523367
    26/12-12   $115.5535 BLK 8523360
    26/12-12   $104.8135 BLK 6523377
    26/12-12   $89.4731 BLK 4523361


    and


    ITP Mud Lite AT


    24-11-10
    56A305

    9/16"

    19.5
     $77.95
    24-8-11
    56A332

    9/16"

    14.2
     $69.95
    24-8-12
    560430
    9/16"
    18.3
     $70.95
    24-9-11

    56A3A9

    9/16"

    16.8
     $73.95
    24-10-11

    56A328

    9/16"

    18.6
     $78.95
    ITP Mud Lite ATV Mud Tire