MAD Construction

This page provides an overview of how the MAD is made.

 Item Description
 A  Rope guide, 6061-T6
B Jumar cam pivot block, 6061-T6
C Jumar Cam
D Cam Backing block, 6061-T6
E "Vee drive pulley, 30° angle is critical, 6061-T6
F Idler pulley, 6061-T6
G Twist grip throttle & cable, later replaced
H Suspension bar, aluminum
 I Spacer bars, steel
J Spur gear, Boston Gear #NB16B
K Lathe change gear, Boston Gear #GB80
L  Lathe change gear, Boston Gear #GB20
M Lathe change gear, Boston Gear #GB96
N Collar, brass
 O Rope cover plate, 6061-T6
P Intermerdiate gearbox cover plate, 6061-T6
 Q Outside gearbox cover plate, 6061-T6
 R Tank mounting bracket
S Motor mounting holes
T Motor output shaft
U Gearbox grease seal, 5053 aluminum & tygon tubing
V Angled grease fitting
W Drive shaft, steel drill rod
X Intermediate idler shaft, naval bronze
Y Output shaft, steel drill rod
1,3 Flanged bearing, Boston Gear #FB-811-4
2 Straight sleeve bearing, Boston Gear #B811-8
4, 6  Thrust bearing, Boston Gear #TB-814
5 Compound steel bushing, Boston Gear #GBB-18
7, 8, 9 Flanged bearing, Boston Gear #FB-1216-6
10, 11 Woodruf keys
 Motor Olsen and Rice Engines Type 204(T-111)