Revision as of 22:46, 13 August 2013

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Tue Aug 13, 2013

LifeTrac Cab Requirements

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Link to Modules Page

Sketchup Component Models

2 spool Joystick [Part# RD522GCGA5A4B6]:

2 Spool Motor Valve [RD522EEAA5A4B1]

2 Spool Cylinder Valve [RD522CCAA5A4B1]

https://www.surpluscenter.com/item.asp?item=9-6702&catname=hydraulic
Media:2_spool_control_valve.skp
http://www.amazon.com/Prince-RD522CCAA5A4B1-Directional-Control-Positions/dp/B0009ESTS2
[Media:2_spool_control_valve.stp]]

Aug 12 2013

Potential software for multi-user collaboration.

  * http://www.opencobalt.org/home - Virtual Workspace
  * http://www.oopgames.com/freecad/ - Construction/Simulation software integrated into world

Aug 9 2012

Sketchy Physics Test

Preformed a test in sketchyphysics attempting to simulate a cylinder with a pivot at one end where the piston could slide. The test seemed to show that sketchyphysics could not be used that way.

Then Found the following video...

File:Wranglerdown.skp """How did they do this"""

Original Download: http://sketchup.google.com/3dwarehouse/details?mid=28486f6c46da2e47107ec7adee65003d

Aug 8 2013

Created a set of build instructions for the "Material Awareness exercise"
Built the "Material Awareness structure"
- Observations:
  - Material is much bigger and heavier than you would think from the sketchup model
  - Assembly works best if nothing is tightened down until entire structure is assembled
Disassembled structure
Did inventory of 1" bolts and nuts.
Did inventory of hydraulic hoses

Aug 7 2013

Search "Brake valves to control hydraulic motors with over-running loads"

http://hydraulicspneumatics.com/other-technologies/book-2-chapter-12-fluid-motor-circuits

Information on Overcenter Valves:

http://www.designworldonline.com/overcenter-valves-are-key-to-hydraulic-control/#_

Interactive video on how hydraulic brake valves work

http://www.wisc-online.com/objects/ViewObject.aspx?ID=HYP3707

We need either a drum brake system or a hydraulic brake valve.

Our current Drum: http://www.surpluscenter.com/item.asp?catname=hydraulic&item=9-9003

Options for drum brake:

Fits our drum, but costs $560 : http://www.jegs.com/i/Currie/272/96226/10002/-1?parentProductId=756792

Does not fit, but demonstrates that there may less costly options: http://www.surpluscenter.com/item.asp?item=28-1324&catname=

Options for hydraulic brake valve:

Still need to determine price and circuit : http://www.hydrotech-bg.com/common/d_images/src/file/PDF/E4-ACCESSORIES.pdf - See Overcenter valves with brake control

Aug 6 2013

Brake Research Discusses several brake systems, their advantages and disadvantages, as well as how to trouble shoot them.
There are two commonly used types of brakes. Drum-Brakes, and Disk-Brakes.

This is the motor we have: http://www.surpluscenter.com/item.asp?item=9-10419&catname=hydraulic

This motor would have been better I think: http://www.surpluscenter.com/item.asp?item=9-7703&catname=hydraulic

Aug 2 2013

Crowd sourced CAD model Database - models can be downloaded in many formats

Aug 1 2013

Winner of FANG 1 challange

http://news.vanderbilt.edu/2013/07/amateur-inventors/

http://cps-vo.org/group/avm/meta

@@ Line 46: / Line 46: @@
 *[[Media:2_spool_motor_valve.stp]]
+Spool Cylinder Valve [RD522CCAA5A4B1]
+*https://www.surpluscenter.com/item.asp?item=9-6702&catname=hydraulic
+*[[Media:2_spool_control_valve.skp]]
+*http://www.amazon.com/Prince-RD522CCAA5A4B1-Directional-Control-Positions/dp/B0009ESTS2
+*[Media:2_spool_control_valve.stp]]

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