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.
Saturday, May 22, 2010
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.
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
Floatation - Steps
- Rough Shape
- Contact Cement
- Attach to skid plate
- Attach to frame
- Shape pefectly
- Heat seal
- Cover
- Don't sink!
Sunday, March 7, 2010
Wednesday, February 17, 2010
Tires
Carlisle Tru Power AT 26/12-12

| 23/8.5-12 | $76.25 | 17 | BLK | 4 | 523301 |
| 23/10.5-12 | $83.98 | 24 | BLK | 4 | 523367 |
| 26/12-12 | $115.55 | 35 | BLK | 8 | 523360 |
| 26/12-12 | $104.81 | 35 | BLK | 6 | 523377 |
| 26/12-12 | $89.47 | 31 | BLK | 4 | 523361 |
and
| 24-11-10 | 56A305 | $77.95 | ||
| 24-8-11 | 56A332 | $69.95 | ||
24-8-12 | 560430 | 18.3 | $70.95 | |
| 24-9-11 | $73.95 | |||
| 24-10-11 | $78.95 |
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