# RPM

Technology / Motorcycle / RPM: RPM is defined as Revolutions Per Minute. Horsepower, Torque, and RPM are interrelated by the formula: HP = Torque * RPM/5252.

### Base Speed (RPM)

Technology / Motors / Base Speed (RPM): The speed which a DC motor develops at rated armature and field voltage with rated load applied. MORE

### Revolutions Per Minute (RPM)

Technology / Motors / Revolutions Per Minute (RPM): The number of times per minute the shaft of the motor (machine) rotates. This is a function of design and the power supply. MORE

### J Seconds (Dc Motors)

Technology / Motors / J Seconds (Dc Motors): J is the per unit moment of inertia. It is defined as the time in seconds to accelerate the motor armature to rated base speed using rated full load torque. J = WR2x Base Rpm(seconds) or 308 x Rated T MORE

### Wk2 (Moment Of Inertia)

Technology / Motors / Wk2 (Moment Of Inertia): The moment of inertia is expressed as Wk2or WR2in terms of pound-feet squared. It is the product of the weight of the object in pounds and the square of the radius of gyration in feet. If the applicat MORE

### Tall Gear

Technology / Motorcycle / Tall Gear: A gear that, compared to a short gear, results in lower engine RPM for a given road speed. A short gear is one with a low gear ratio, and a tall gear is one with a high gear ratio. MORE

### Constant Torque

Technology / Motors / Constant Torque: Refers to loads whose H.P. requirements change linearly with changing speeds. Horsepower varies with the speed, i.e.- 2/1 HP at 1800/900 RPM. (Seen on some 2-speed motors). Possible applications inclu MORE