Data Sheet

NeveRest 40 Motor
Features and Testing
8/27/14
Test 2: Failure at Stall
For this test we took two brand new motors and tested them in stall conditions. We locked both the
motor and output shaft from spinning using the Tetrix motor mount clamp and a motor hub. Using our
standard electrical supply each motor was given 12 volts and up to 100 amps. The motors were deemed
to have failed when the current draw fell to zero; the time to failure and case temperature at failure are
recorded in the table below:
Motor
NeveRest 40
Tetrix V2
Time to failure [min:sec]
2:54
0:07
Temperature at failure [°f]
190
85*
*No change from room temperature
Test 3: Failure of the Gearbox
This test is designed to find the applied torque needed to cause a failure in the gearbox. In this test we
secured the motor from spinning with a bolt through the side of the casing. The output shaft was
connected to a lever arm where force (F) was applied. With the length of the arm (r) we can find the
torque (τ) needed to break the gearbox using the following equation:
𝜏 =
(
𝐹
)(
𝑟
)
(1)
The test setup can be seen in the picture below:
The results from the test are listed in the table below, the force was measured with a force gauge and
the torque was calculated using equation (1).
Motor
NeveRest 40
Tetrix V2
Force at failure [lbs]
8.8
7.8
Torque [in-oz]
1480
1420
Motor
C-Channel