dc motor things

3:41

3:25

17:42

10:32

33:37

31:01

19:40

11:35

39:20

19:08

22:11

55:40

17:42

28:28

5:45

7:02

3:30

4:53

20:40

11:26

10:07

31:34

20:46

16:53

4:00

3:38

6:14

7:37

13:44

6:00

4:20

5:45

23:10

26:24

6:56

6:56

11:16

6:50

9:43

10:25