Power Cube v17.10: Difference between revisions

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(Created page with "=Concept= <html><iframe src="https://docs.google.com/presentation/d/e/2PACX-1vTx9E2qiH6rhw1F6eCvvx-4NpWu6qK5dJp-ZRty733sF69VG4wxI2BTEoKCXiLwp0avvey_1yy-FZT-/embed?start=false...")
 
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[https://docs.google.com/spreadsheets/d/1--EZcm29rSRy2P0uNJpcZ7FtITd0zF725abbO_yqDl4/edit#gid=1327173174 edit]
[https://docs.google.com/spreadsheets/d/1--EZcm29rSRy2P0uNJpcZ7FtITd0zF725abbO_yqDl4/edit#gid=1327173174 edit]
==Calculations==
===Power===
Use max engine output to power the pump and calculate hydraulic fluid flow and torque.
The idea is to use the maximum power available from the motor to power the pump and calculate the torque to the hydraulic pump.
Reference:
  Torque (ft-lb) = HP * 33000 / 2 * pi * RPM
  HP = Watts / (746 Watts/HP)
  HP = Torque * 2 * pi * RPM / 33000 =~ Torque * RPM / 5252
  RPM = HP * 33000 / 2 * pi * Torque (ft-lb)
Pump Input:
  Torque at rated input (5HP and 3600 RPM): torque = 5 HP * 33000 / 2 * pi * 3600 = 7.29 ft-lb
  Solve for pump RPM: RPM = .303 HP * 33000 / 2 * pi * 7.29 ft-lb =~ 218
Engine Specs:
  Displacement: 420cc Bore: 90, Stroke: 66.
  Max Output: 16.0 HP / 3600 RPM.
  Max Torque: 28.5 Nm / 23.34 ft/lb.
  Shaft Size: 1" Diameter, 2-3/4" Long, 1/4" Keyway,
  Shaft End: 3/8" Size 24 UNF - Drilled and Tapped
  Measurement from Center of Shaft to Base: 5"
  Fuel Tank Capacity: 1.75 Gallons
  Fuel Consumption: 1/2 Gallon Per Hour (at 1/2 load)
  Dry Weight: 77 lbs
  Recommended Fuel Type: Gasoline - 87 Octane Rating Or Better
Pump Specs:
  Disp: 0.92 cu. in. / rev.
  Pump Type: Gear
  Rotation: CW
  Pressure: 3000 PSI Max.
  Speed: 3600 RPM Max.
  Flow: 7.17 GPM @ 1800 RPM and 2000 PSI.
  Mount: 2 bolt SAE A
  Shaft: 5/8" 9T spline, 1-1/4" long.
  Inlet Port: SAE 16
  Outlet Port: SAE 10
  Size: 4-1/2" x 5-1/8" x 4-5/8"
  Shpg: 12 lb.
===Hydraulic Fluid Flow===
Use pump specs to calculate displacement:
  RPM * CIPR = 0.92 CIPR * 3600 RPM / 231 cu-in/gal = 14.33 GPM
===Torque==
  Torque (ft-lb) = HP * 33000 / 2 * pi * RPM = 16 * 33000 / 2 * pi * 3600 = 23.34 ft-lb

Revision as of 03:27, 22 October 2017

Concept

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vBOM

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BOM

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Calculations

Power

Use max engine output to power the pump and calculate hydraulic fluid flow and torque.

The idea is to use the maximum power available from the motor to power the pump and calculate the torque to the hydraulic pump.

Reference: 

 Torque (ft-lb) = HP * 33000 / 2 * pi * RPM
 HP = Watts / (746 Watts/HP)
 HP = Torque * 2 * pi * RPM / 33000 =~ Torque * RPM / 5252
 RPM = HP * 33000 / 2 * pi * Torque (ft-lb)

Pump Input: 

 Torque at rated input (5HP and 3600 RPM): torque = 5 HP * 33000 / 2 * pi * 3600 = 7.29 ft-lb
 Solve for pump RPM: RPM = .303 HP * 33000 / 2 * pi * 7.29 ft-lb =~ 218

Engine Specs: 

 Displacement:	420cc Bore: 90, Stroke: 66.
 Max Output:	16.0 HP / 3600 RPM.
 Max Torque:	28.5 Nm / 23.34 ft/lb.
 Shaft Size:	1" Diameter, 2-3/4" Long, 1/4" Keyway,
 Shaft End:	3/8" Size 24 UNF - Drilled and Tapped
 Measurement from Center of Shaft to Base:	5"
 Fuel Tank Capacity:	1.75 Gallons
 Fuel Consumption:	1/2 Gallon Per Hour (at 1/2 load)
 Dry Weight:	77 lbs
 Recommended Fuel Type:	Gasoline - 87 Octane Rating Or Better

Pump Specs: 

 Disp: 0.92 cu. in. / rev.
 Pump Type: Gear
 Rotation: CW
 Pressure: 3000 PSI Max.
 Speed: 3600 RPM Max.
 Flow: 7.17 GPM @ 1800 RPM and 2000 PSI.
 Mount: 2 bolt SAE A
 Shaft: 5/8" 9T spline, 1-1/4" long.
 Inlet Port: SAE 16
 Outlet Port: SAE 10
 Size: 4-1/2" x 5-1/8" x 4-5/8"
 Shpg: 12 lb.

Hydraulic Fluid Flow

Use pump specs to calculate displacement: 

 RPM * CIPR = 0.92 CIPR * 3600 RPM / 231 cu-in/gal = 14.33 GPM

=Torque

 Torque (ft-lb) = HP * 33000 / 2 * pi * RPM = 16 * 33000 / 2 * pi * 3600 = 23.34 ft-lb
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