Testing the Benefits of Mechanization with Aywa International in Senegal November 2011

Manual versus Mechanized Power for Traditional West Fishing Boats

  • Compare 7 Paddlers vs. one 4.5 inboard motor and propeller with 6 crew
  • Two wooden Pirogues, (fishing boat) each weighing ≈1 metric ton
  • Measure speed & fuel efficiency over ½ mile
Mechanized - Thai-style long-neck outboard
Manual - 7 person-crew w/6 paddles + 1 navigator
Test Location 1/2 mile of the Sine-Saloum River outside of Foundiougne, Senegal

Test Results Manual:

  1. ½ mile time: 9 minutes 32 seconds
  2. Max Speed: 5 km/hour (Cannot be sustained for more than 15-20 minutes)

Test Results Mechanized

  • ½ mile time: 4 minutes & 60 seconds
  • Max Speed 9.9 km/hour
  • (At Optimal Operating Level)
  • Fuel Efficiency: ≈5 km/liter (empty load)

Conclusion: A Long-Neck Outboard can...

  • Cut travel time by 50%
  • Travel 50 km on 10 liter tank
  • Cost of 10 liter tank 6750 CFA ($14)
  • Subsidized cost of 675 CFA/liter for 2 stroke fuel

Notes:

Manual versus Pump-based Irrigation in an Urban Farm

  • Compare time to irrigate two areas with 6 micro-plots ≈ 18 m2
  • Each micro-plot receives ≈12 liters
Hand watering from 2 x 1 liter cans
Hand watering using a pump
Pump and diesel motor assembly

Manual Irrigation Results

  • Irrigation time: 18 m2: 3 minutes & 48 seconds
  • Farmer would spend 1.5 hours watering 1 hectare (100 m2)
  • Water twice a day in dry season

Pump Irrigation Results

  • 18 m2 time: 1 minute & 10 seconds
  • Farmer would spend about 30 minutes watering 1 hectare and save 1 hour of time

Conclusions

  • Motorized watering can be about 3 times faster than manual watering
  • Time savings can be used for other productive activities (weeding, expanding planting)

Future Tests

Manual versus Mechanized Tilling

Manual versus Mechanized Peanut Shelling

Manual versus Mechanized Milling

Created By
Jonathan Rodrigues
Appreciate

Credits:

Jonathan Rodrigues

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