HOW TO PICK YOUR MATERIALS
Easy to work with
Relatively inexpensive ($4/foot)
Can be easily changed/modified
Readily accessible. Comes in a large variety of sizes and wall thicknesses
Aluminum: Very stiff for its weight
Harder to weld
Needs more material to resist fatigue
Can be difficult to repair
Strong (but not stiff)
Hard to weld
Brushless Electric Motors
Controller is more difficult to wire
Brushed Electric Motors
Lower overall efficiency
Controller is inexpensive and easy to wire
Batteries are one of the areas where you get what you pay for.
Decisions to make:
What voltage does your car run at?
Higher voltage means lower current.
How much weight can you carry?
How much energy can you get at that weight?
Can your solar panels recharge the battery pack?
Is it a road race or a track race?
The 5 kilowatt kilowatt‐hour rule kw‐h = Amp‐hours x Voltage (at the 20 hour discharge rate)
Example: Four 12 volt, 84 amp‐hour batteries batteries in series 84ah x 48 v = 4032 watt‐hours or 4.032 kilowatt‐hours