Power Cube WS

Based on collaboration between OSe and Wikispeed OSE-Wikispeed_Hybrid_Overview

File:Engine.skp

File:50hpCube.skp

File:Pc50.zip

Air_Cooled_1600cc_VW_Engine

50_HP_Power_Cube

50_hp_Power_Cube

Modular_Vehicles

6_in_60_Milestones

Hybrid_Hydraulic_System

Parts

Hydraulic Pumps

gdoc calc

http://www.surpluscenter.com/hydraulic.htm

recomends halving calculation for gas engine power.

http://www.engineeringtoolbox.com/hydraulic-pumps-horsepower-d_1464.html

To find hydraulic horsepower, use the equation: HP = (PSI X GPM) / 1714

possibilities

4.13 2500rpm max http://www.grainger.com/Grainger/HALDEX-BARNES-Hydraulic-Gear-Pump-1DBD7?Pid=search

2.69 cuin/rev, 3000rpm max, 3000psi max

2500rpm 2000psi hp, 34, gpm 29

theoretical max HP 61, max gpm 35

http://www.surpluscenter.com/item.asp?item=9-7130-A&catname=hydraulic

3.87 cuin/rev, 3000rpm max, 2500 psi max

2500rpm 2000psi HP 49, gpm 42

theoretical max HP 73, max gpm 50

http://www.surpluscenter.com/item.asp?item=9-7132-A&catname=hydraulic

3.18 cuin/rev, 3000rpm max, 2500 psi max

2500rpm 2000psi HP 40, gpm 34

theoretical max HP 60, max gpm 41

http://www.surpluscenter.com/item.asp?item=9-7131-B&catname=hydraulic

targets

• system at 1000psi would need about 90gpm to reach 50HP

  http://m.grainger.com/mobile/details/?R=1DBD9

  • 2500rpm max

• 2000psi 45gpm
• 3000psi 30gpm

  http://m.grainger.com/mobile/details/?R=1DBD7

  • 2500rpm max

  http://m.grainger.com/mobile/details/?R=20V910

  • 3600rpm max

• 4000psi 22gpm

  http://m.grainger.com/mobile/details/?R=1DBD4

  • 3000rpm

  http://m.grainger.com/mobile/details/?R=1DBD1

  • 3100rpm

  http://m.grainger.com/mobile/details/?R=1DBD8

  • 2750rpm

hydraulic motors

http://www.surpluscenter.com/item.asp?item=9-7022&catname=hydraulic

Vw Engine

Exaust

http://www.gex.com/41exhst.htm

Tranny

http://www.qualitygermanautoparts.com/index.php?p=p1313860420

starter

http://www.mamotorworkstv.com/vw/diagram/air-cooled-vw-flywheel-and-hardware-stock/

http://www.gex.com/empi/?type=1&code=&page=9

removing nut

Sourcing Problems

pumps

• 5000rpm pumps have small cuin/rev ratings
• larger flow pumps max at 3600rpms
  • VW will likey be be near 4500rpms when accelerating

Diagrams

http://www.longenterprises.com/diagram_folder/diagramlist.htm

http://www.thesamba.com/vw/archives/info/

Designs

edit

Bell_Housing_Pump_Mounting_Detail_Concept

mounting to bell housing [1]

Notes

6V vs 12V [2]

gland nut and flywheel notes [3]

horsepower graph

horepower graphs

flywheel

The flywheel is a heavy, machined steel wheel that is bolted to the end of the crankshaft. The flywheel serves three purposes -

• The primary purpose of the flywheel is to store kinetic energy and maintain the revolving inertia of the engine through its cycles.
• Secondarily, the flywheel serves as part of the engine starting mechanism. There are teeth all around the outer circumference of the flywheel; starter gear engages these teeth to turn the engine over for starting.
• And finally, the machined face of the flywheel acts as part of the clutch.
• The flywheel is attached to the front of the crankshaft by four dowel pegs and very tightly secured (>254 ft-lbs) by a single central gland nut which also incorporates needle roller bearings for the gearbox input shaft.

[4]

thoughts

pump attachment

• use clutch
  • need clutch parts
    • engagement rods and center piece
    • shafting to clutch
• custom plate with shaft attached to flywheel
  • could use bell housing or build mount for starter and pump
    • would need coupling and shafting through bell housing
• geardown to allow for lower rpms on pump

Links

http://en.wikipedia.org/wiki/Volkswagen_air-cooled_engine