Power Cube/Research Development: Difference between revisions

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This page concerns issues encountered in the Research and development of the various OSE projects.
{{GVCS Header}}


HydraulicHoseSizing
=Overview=
The powercube has undergone a number of revisions and modifications. With each prototype, different aspects of the design were refined and improved in pursuit of meeting [[OSE Specifications]].


== Hydraulic Hose Sizing ==
=Prototypes=
==Power Cube I==
[[Image:Microtrac engineback1.jpg|400px]]


==Power Cube II==


The size of the suction hose for the power cube, it is calculated from the fluid velocity in the hose. The general values used are:
[[File:Powercube-ii-front.jpg|400px]]


:Pressure: 20 ft/sec
:Return: 15 ft/sec
:Suction: 5 ft/sec


<html>
<a href="http://vimeo.com/15892882">How to build an OSE Power Cube (full length)</a> from <a href="http://vimeo.com/user3935797">Will OSE</a> on <a href="http://vimeo.com">Vimeo</a>:
<p><iframe src="https://player.vimeo.com/video/15892882?title=0&amp;byline=0&amp;portrait=0" width="400" height="300" frameborder="0"></iframe>
</html>


The formula for calculating the hose size is as follows:
==Power Cube III==


:V = Q / (3.117 * pi/4 * D ^ 2)
[[Power Cube III]]


Where:
==Power Cube IV==


:V is fluid velocity in ft/sec
This is the latest Power Cube, as of September 2011.
:Q is fluid volume in gallons/min
<br />
:D is hose inside diameter in inches
Please visit the links at the top of this page for the latest Bill Of Materials (BOM) and Manufacturing Instructions.


or
==Power Cube V==


:D = (Q / (3.117 * pi/4 * V) ) ^ 1/2
[[Power Cube V]]


==Power Cube VI==


In this case, V = 5 ft / sec and the flow rate is 13 GPM, so:
[[Power Cube VI]] (preview)


:D = (13 GPM / (3.117 * pi/4 * 5 ft/sec) ) ^ 1/2 = 1.03 in
[[Power Cube 6]] (more complete documentation)


==Power Cube (n)==
* visual indicator of fluid level would be helpful.
** Perhaps 90* fittings could be inserted into the vertical frame-tank members and a clear tube could be run between them.
* [[Power_Cube_VI_Review]]
** move the muffler away from the driver.
** re-position hoses to prevent accidental collision damage.
** lower the temperature switch setting.
** remote throttle/keyswitch?
* address engine oil drain?
** http://opensourceecology.org/wiki/Power_Cube_6/User%27s_Manual
* double chain coupler?
** http://opensourceecology.org/wiki/Power_Cube_6/Manufacturing_Instructions


The sizing guidelines say to always round up - meaning take the next size larger than 1.03 inches (probably 1 1/4").
==Power Cube E==


While I thought the sizing for the pressure lines was OK, I double-checked and found the formula indicates that the supply and return hoses should be larger as well:
Electric power cube


:D = (13 GPM / (3.117 * pi/4 * 20 ft/sec) ) ^ 1/2 = 0.515 in
https://www.surpluscenter.com/item.asp?item=10-2661
*254T frame
*Shaft 1-5/8" dia. x 4.2" w/3/8" keyway
*Size 18" x 13" x 12"


[http://www.engineeringtoolbox.com/nema-electrical-motor-frame-dimensions-d_1504.html frame dimensions]


Also, the return lines appear to be undersized as well:
==Power Cube WS==


:D = (13 / (3.117 * pi/4 * 15 ft/sec) ) ^ 1/2 = 0.595 in
power cube with 50HP to be mounted in wikispeed car frame. utilizing a refurbished VW bug engine.


Both Pressure and Return hose sizes should be increased to 3/4", as well as all couplers and fittings.
[[Power Cube WS]]
 
=Industry Standards=
 
=Research=
 
[[ Hydraulic Hose Sizing ]]
 
[[ Hydraulic Connectors ]]
 
[[ Cooling and Heating ]]
 
[[ Fuel Tank ]]
 
[[ Shaft Coupling ]]
 
[[Power Cube/Controller]]
 
[http://www.machinerylubrication.com/Read/28430/hydraulic-pump-motors-maintenance pump efficiency]
 
=Development=
 
[[Modular power cubes]] concept development
 
{{GVCS Footer}}

Latest revision as of 21:45, 5 February 2014


Power Cube
   Home  |  Research & Development  |  Bill of Materials  |  Manufacturing Instructions  |  User's Manual  |  User Reviews    Power Cube.png

Overview

The powercube has undergone a number of revisions and modifications. With each prototype, different aspects of the design were refined and improved in pursuit of meeting OSE Specifications.

Prototypes

Power Cube I

Microtrac engineback1.jpg

Power Cube II

Powercube-ii-front.jpg


How to build an OSE Power Cube (full length) from Will OSE on Vimeo:

Power Cube III

Power Cube III

Power Cube IV

This is the latest Power Cube, as of September 2011.
Please visit the links at the top of this page for the latest Bill Of Materials (BOM) and Manufacturing Instructions.

Power Cube V

Power Cube V

Power Cube VI

Power Cube VI (preview)

Power Cube 6 (more complete documentation)

Power Cube (n)

Power Cube E

Electric power cube

https://www.surpluscenter.com/item.asp?item=10-2661

  • 254T frame
  • Shaft 1-5/8" dia. x 4.2" w/3/8" keyway
  • Size 18" x 13" x 12"

frame dimensions

Power Cube WS

power cube with 50HP to be mounted in wikispeed car frame. utilizing a refurbished VW bug engine.

Power Cube WS

Industry Standards

Research

Hydraulic Hose Sizing

Hydraulic Connectors

Cooling and Heating

Fuel Tank

Shaft Coupling

Power Cube/Controller

pump efficiency

Development

Modular power cubes concept development


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