Rationalization of Synthesis and Design

  • The linkage we have decided to move forward with is Chris’ linkage.
  • It is a Carbon-Carbon Composite linkage System for high durability to wear
  • Aluminum foot pad at coupler point for high quality at a low price
  • Aluminum is easy to machine
  • Running motion is obviously not exact; however, presents a very close comparison, considering we are only using a fourbar linkage system. Five and Six bar linkage systems would work as well, possibly better, but with those comes an exponential increase in cost
  • Machine can be used for rehabilitation purposes due to the design of the linkage system
  • Machine will weigh very little as compared to the machines on the market today, and therefore, is extremely portable
  • Our machine is dimensionally smaller than comparable machines, and therefore, can be used in homes, as well as fitness centers, and physical therapy offices
  • Machine is very attractive to middle class consumers, because the cost is low, but performance specs are above par compared to our competition.
  • Since out machine costs less than comparably equipped machines that are on the market today, consumers will tend to overlook any physical aspects of the machine that they don’t like (i.e. color, finish, button display cluster), because the machine is so affordable

Phase 3 Path Forward

  • Glenn – Analysis of final Safety concerns utilizing quality control concepts and feedback from customer
  • Victor and Chris – Final Material Selection Research and choice, paying particular attention to bearings, and electronic casings

Kevin and Dave – Final design synthesis of entire running machine (linkage system, casing, etc.)... Emphasis in this area is to not only be put on functionality, but also physical attractiveness to the potential customers

Chris Clare

Theta Local CS / G value / Crank Angle / Theta Local CS / G value / Crank Angle
0 / 1 / 339 / 192 / 1.02 / 342.6
0 / 1 / 297 / 192 / 1.02 / 286
0 / 1 / 251.5 / 192 / 1.02 / 264
0 / 1 / 28 / 192 / 1.02 / 104
24 / 1.09 / 29 / 192 / 1.02 / 58
24 / 1.09 / 44 / 192 / 1.02 / 28
24 / 1.09 / 133.5 / 216 / 1.24 / 144
24 / 1.09 / 344.5 / 216 / 1.24 / 345.6
48 / 1.49 / 349 / 240 / 2 / 350
48 / 1.49 / 172.5 / 240 / 2 / 175
72 / 3.24 / 185 / 264 / 9.57 / 20.1
72 / 3.24 / 21.2 / 264 / 9.57 / 200
96 / 9.57 / 202 / 288 / 3.24 / 215
96 / 9.57 / 26.3 / 288 / 3.24 / 25.4
120 / 2 / 26.4 / 312 / 1.49 / 26.1
120 / 2 / 220 / 312 / 1.49 / 216
144 / 1.24 / 230 / 336 / 1.09 / 335.8
144 / 1.24 / 27 / 336 / 1.09 / 311
168 / 1.02 / 27.5 / 336 / 1.09 / 330.4
168 / 1.02 / 242 / 336 / 1.09 / 27.5
168 / 1.02 / 305 / 360 / 1 / 339
168 / 1.02 / 336.4 / 360 / 1 / 297
360 / 1 / 251.5
360 / 1 / 28

Victor Castro’s Design for Fourbar Linkage System

Team # 3

This path (in green) has to, of course, be imagined upside down in order to grasp the intended running motion.

Kinetic Profile Data

Force (lb) / g's / Crank Angle(deg)
180.00 / 1.00 / 47.00
180.00 / 1.00 / 227.00
197.00 / 1.09 / 54.00
197.00 / 1.09 / 242.00
269.00 / 1.49 / 56.00
269.00 / 1.49 / 257.00
582.50 / 3.24 / 63.00
582.50 / 3.24 / 263.00
-1722.00 / 9.57 / 96.00
-1722.00 / 9.57 / 281.00
-360.00 / 2.00 / 130.00
-360.00 / 2.00 / 290.00
-222.50 / 1.24 / 162.00
-222.50 / 1.24 / 299.00
-184.00 / 1.02 / 204.00
-184.00 / 1.02 / 304.00
-184.00 / 1.02 / 212.00
-184.00 / 1.02 / 5.00
-222.50 / 1.24 / 295.00
-222.50 / 1.24 / 46.00
-360.00 / 2.00 / 323.00
-360.00 / 2.00 / 58.00
-1722.00 / 9.57 / 352.00
-1722.00 / 9.57 / 77.00
582.50 / 3.24 / 34.00
582.50 / 3.24 / 113.00
269.00 / 1.49 / 44.00
269.00 / 1.49 / 142.00
197.00 / 1.09 / 48.00
197.00 / 1.09 / 185.00
180.00 / 1.00 / 50.00
180.00 / 1.00 / 220.00

Kinetic Profile Graph

System at Pt. A System at Pt. B

Attached Handwritten Work

Glenn Catlin – Group 3

Path of running motion shown by green loop

David Clizbe

Team #3

Linkage

Force Profile

Force Profile Data

Angle(degrees) / Angle(radians) / Force / Angle(GCS) / G's / Crank Angle
0 / 0 / 200 / 43 / 1 / 35
0 / 0 / 200 / 43 / 1 / 204
22.5 / 0.392699 / 216.4784 / 65.5 / 1.082392 / 105
22.5 / 0.392699 / 216.4784 / 65.5 / 1.082392 / 213
45 / 0.785398 / 282.8427 / 88 / 1.414214 / 134
45 / 0.785398 / 282.8427 / 88 / 1.414214 / 225
67.5 / 1.178097 / 522.6252 / 110.5 / 2.613126 / 169
67.5 / 1.178097 / 522.6252 / 110.5 / 2.613126 / 18
89 / 1.553343 / 11459.74 / 132
89 / 1.553343 / 11459.74 / 132
112.5 / 1.963495 / -522.625 / 155.5 / 2.613126 / 19
112.5 / 1.963495 / -522.625 / 155.5 / 2.613126 / 191
135 / 2.356194 / -282.843 / 178 / 1.414214 / 232
135 / 2.356194 / -282.843 / 178 / 1.414214 / 22
157.5 / 2.748894 / -216.478 / 200.5 / 1.082392 / 27
157.5 / 2.748894 / -216.478 / 200.5 / 1.082392 / 202
180 / 3.141593 / -200 / 223 / 1 / 35
180 / 3.141593 / -200 / 223 / 1 / 195
202.5 / 3.534292 / -216.478 / 245.5 / 1.082392 / 105
202.5 / 3.534292 / -216.478 / 245.5 / 1.082392 / 205
225 / 3.926991 / -282.843 / 268 / 1.414214 / 145
225 / 3.926991 / -282.843 / 268 / 1.414214 / 225
247.5 / 4.31969 / -522.625 / 290.5 / 2.613126 / 167
247.5 / 4.31969 / -522.625 / 290.5 / 2.613126 / 18
269 / 4.694936 / -11459.7 / 312
269 / 4.694936 / -11459.7 / 312
292.5 / 5.105088 / 522.6252 / 335.5 / 2.613126 / 19
292.5 / 5.105088 / 522.6252 / 335.5 / 2.613126 / 192
315 / 5.497787 / 282.8427 / 358 / 1.414214 / 25
315 / 5.497787 / 282.8427 / 358 / 1.414214 / 198
337.5 / 5.890486 / 216.4784 / 380.5 / 1.082392 / 27
337.5 / 5.890486 / 216.4784 / 380.5 / 1.082392 / 202
360 / 6.283185 / 200 / 403 / 1 / 35
360 / 6.283185 / 200 / 403 / 1 / 204

Point A

Point B

Kevin Camponeschi