Project 2GROUP 8
Design Requirements
The clutch must couple the output shaft of the motor to the flywheel shaft The clutch must disengage at 250 rpm The motor to be used is the 19:1 DC gear motor at the following page o
https://www.pololu.com/product/1442 The clutch must be fabricated using the 3D printers Frictional materials are limited to those that are reasonably available
(sandpaper, rubber) Bill of Merchandise must not exceed $15 Must be able to be assembled in 20 minutes Must fit inside of a 410 in^3 box to be printed.
Derived Design Requirements
The springs must be able to withstand a force of 3 lbs
Spring constant must not be less than 18 lb/in
Stall torque should not shear pad guides
The coefficient of friction should be greater than 1 for sandpaper
Timeline
Design
Cost
Extension spring: $3.04 (X2) Plus tax: $6.58
Sandpaper: $6.31 Plus tax: $6.83
TOTAL: $13.83
