Ball Bearings
(See Bearings)


Ball Cups
The female portion of the ball and cup assembly that tie rods use to connect and swivel with a wide range of motion. Usually made of plastic/nylon mix and thread onto the connecting tie rods on servos, steering links, etc.


Ball Diff (Differential)
Often the most desirable, this type of differential is most like the real-car limited slip. Adjustable traction settings make this a favorite amongst racing enthusiasts, however not usually as durable as the bevel gear diffs, some casual users may want to stay away from this one.


Ball End
The male portion of the ball and cup assembly that tie rods use to connect and swivel with a wide range of motion. Usually made of steel or titanium, they generally screw into the chassis or support parts. 


Use an internal rolling motion that slides and inner sleeve past an outer sleeve by rolling them on steel balls or pins. Usually self contained with specific outer, inner and width dimensions. Far superior to bushings as friction is virtually eliminated.


Belt Drive
A drive system than incorporates rubber or similar material belts to transfer power from the engine/transmission assembly to the wheels.


Belt Tensioner
Keeps belt from slapping around out of control when running between pulleys. Usually consists of a smooth-surface pulley (bearings) that run against back of belt (non-toothed side) and supplies enough tension to keep belt at running smoothly. Because belts tend to stretch over time, most are adjustable to help take up the slack that is created by aging belts.


Belted Tires
A non-stretchable band (usually woven cloth) that is embedded into the inner surface (opposite of driving surface) to keep the tires from flaring at high RPMs. This is most desirable in touring cars as their extreme RPM's cause the most flaring and therefore damage to the body (especially front fender) and unpredictable handling.


Bevel Gear
A gear that has the gear face cut at a 45 degree angle to the axis. This allows a companion bevel gear to ride on it at an opposing 90 degree angle. Used commonly in differentials (bevel diff). See also Spider Gear.


Bevel Gear Diff
Basic, durable and generally, not adjustable, these are for the beginner or casual user. This drivetrain has no give (slip) and relies on even traction on each side. If either wheel loses traction you generally lose all power to the other.


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This page last modified: 07/26/11