Drive

NPC-2212

Price: $155

The NPC 2212 this is a 12-volt gear reduced motor. It has an unusual double half inch out put shaft on both sides. We will cut off the side that we don’t need, the shaft also has a full 1/8 inch key slot. There is an access hole in the end of the motor that exposes the armature that is internally tapped 10-32. An encoder shaft can be screwed into this for adding an encoder for feedback. This motor’s torque limit is 180 inch/pounds. We are running the battle bot about 60 pounds per motor, which means rpm for battle bot will be approximately 227. It will produce about .18 horsepower. These motors have Permanent brush magnets and are direct current powered. They have the ability to be reversed so that the motors can spin forward and backwards which is necessary for tank drive.

• Weighs 5.1 lbs
• 12-volt motor
• Gear Box 21:1 Ratio
• Permanent Magnet
• Reversible
• Max Rpm 285
• Max torque 180 in. lbs
• Running Rpm 227
• Running torque 47.7 in. lbs

Drive

NPC-PT315

Price: $18.00

The NPC-PT314 Is the wheel that we are using it is a high friction rubber tire. It is 4.5-inchs in diameter and 2-inch wide treads. These wheels include a custom fitted Delrin insert with a 1/2" bore and 1/8" key slot for power drive applications. The treads 2" wide and are a soft 70 durometer rubber for optimum traction. The rims are a durable polypropylene.

• Weighs 1.1 lbs
• 4.5” diameter
• 2” wide tread
• Keyed axle

Drive

Pillow block

Price: $7.95

The Pillow block will used to take the force from the wheels and distribute it to the frame, when the bot is hit from above.

• 1/2" Bore
• 2 9/32 Height
• 3/8" Bolt dia.
• Weighs 3 lbs

Drive

Shaft Coupling

Price: $25.31

Compared to set-screw couplings, clamp-on couplings have less backlash (slippage) and superior holding power and torque capacity. Plus, they don't have set screws to bite into the shaft so they won't damage it.

• ½ inch ID
• 1-1/8 th inch OD
• 1/8 th inch Keyway
• 1-1/4 th inches long

Drive

Castors

Price: $21.99

These are clearly ideal for contemporary styles! Large caster is 4-1/2'' High overall. Small caster is 3-1/4'' High overall. Both sizes are load-rated at 130 lbs. and have a 2'' x 2-1/2'' mounting plate.

• 3-1/4” Height

• 5.5 lbs

• 130 lbs load barring

Weapon

S28-400 Magmotor

Price: $349.00

The motor is to spin the Horizontal bar at high speeds, even with its’ small size, it is one of the most powerful motors of its’ class. The motor will be placed just off the center of the bot, right behind the middle of the bot, to accommodate the miter-joint that should be in the direct middle.2 Motor Mounts will be placed on the motor to hold it in place on the bottom of the bot. The Screws that attach the bot to motor will screw from the bottom of the bot to the Motor Mounts. A 24 Volt battery will be dedicated to powering the motor.

Specs:

Weapon

20 degree Pressure Angle Miter Gears

Price: $35.28

These gears will be used to transfer our motion at 90 degrees at a 1:1 ratio. Since these gears are plain bore, we plan to create a keyway for each gear so one will fit on the motor shaft and one to fit on the main shaft.

Weapon

Full-Keyed 1018 Steel Shaft

Price:$1.20/ linear inch

The shafts are planned on being connected by the means of shaft collars and mounted bearings.

Weapon

Alloy Steel Key Stock

Price: $1.37/ linear inch

Weapon

Two Bolt Flange Bearing-Standard Duty

Price: $13.05

The use of two bearings, one on top and bottom of bot will be used to reduce friction of the spinning weapon allowing a greater maximum speed. The use of two set screws will attach the bearings to the shaft and the use of ¼” bolts will attach it to the bot.

Weapon

Keyed Two-Piece Steel Clamp-On Shaft Collar

Price: $10.02

Multiple shaft collars will be used to hold parts on the shaft such as the spinning weapon. They will also be used to hold the shaft in place with the bot. The collars will be attached with the use of clamping pressure and friction.

Weapon

TW C1 Contactor Solenoid

Price: $44.00

The solenoid is used to help slow down the spinning weapon to a stop in 30 seconds. It is connected to the bot with means of mounting plate and two screws. It is wired to the batteries and motor.

Weapon

3” Magmotor Mounts

Price: $23.00

These aluminum mounts are in a pair to hold the motor to the bot. They will be bolted to the bot using ¼” screws or bolts.

Weapon

S7 Tool Steel Bar

Price: $219.15

The S7 bar will be the weapon for the bot. It will be spun with the motors and will be beveled to increase damage possibilities. The beveling will also reduce the weight slightly which will help with the overall weight. There will be blade covers and a pin to hold it down during transportation for safety.

Price: $25.00

NiCD Battery

Armor and Frame

Aluminum 7075-T6

Price: $46.40

We are using Aluminum 7075 for the armor. The base plate is 3/32”. The positives of this alloy are that it is very strong compared to its weight and it fairly machinable. Some bad things are that it is unweldable and it is expensive. The density of it is 0.102 lb/in 3. We need about 2’ x 4’.

Frame and Armor

Steel 4130, annealed

Price: $70.00

We are using 4130 square steel tubing for the frame. The dimensions of the tubing are 3/8” x 3/8”. The positives of this of alloy are that it is very weldable and it is a common metal. One bad thing is that it is very heavy. The density of it is 0.284 lb/in 3. We need about 25 linear feet of steel tubing.