Graham Microtrac

Current Work

Scrumy page: https://scrumy.com/barnyard28hoarders

GitHub for design docs: https://github.com/spina/MicroTrac

Requirements Document: https://docs.google.com/spreadsheet/ccc?key=0Akre6PDjx-eFdEVadHN2NG5haTNVbFNnWWRuZW9ZV2c#gid=0

Google Group: https://groups.google.com/forum/?fromgroups#!forum/microtractor-development

OSE Forum: http://forum.opensourceecology.org/discussion/788/microtrac-design

Dorkmo's Hydraulic's Computations: https://docs.google.com/spreadsheet/ccc?key=0AgxMMqGvwTM-dE9aV2x4ZnFwTGVPYkhUNnVWQzB4bnc#gid=1

Designs

• New Frame concept:

http://www.mediafire.com/?mcbdc8d84w3tata

• diagnal in back + plate next to PCube

https://docs.google.com/file/d/0BwxMMqGvwTM-WEpjSnNBeXVoWTQ/edit#

• telescoping arms

https://docs.google.com/open?id=0BwxMMqGvwTM-cFdLMjdjelVUcEU

http://en.wikipedia.org/wiki/Nylatron

• plate and trac design

http://opensourceecology.org/wiki/File:Microtrac-ChassisAndDriveMock-up1.pdf

James Slade's Bobcat Tracks

Can we replicate this? How easy can we make fabrication of sufficiently functional tracks?

Tracked Machines

• http://www.heavyequipmentforums.com/showthread.php?1199-Aveling-Barford-Calfdozer

Track Designs

https://docs.google.com/folder/d/0BwxMMqGvwTM-T242Vmo5Y1Y5T28/edit

Industry Standard Track Designs

Eel River SteelWorks makes a track similar to the one used on LifeTrac. They use flatbar instead of rebar. They also make a custom clamp for easy installation.
Check it out: http://www.eelriversteel.com/index.php?nav=trax

Hydraulics

https://docs.google.com/spreadsheet/ccc?key=0AgxMMqGvwTM-dE9aV2x4ZnFwTGVPYkhUNnVWQzB4bnc#gid=0

https://docs.google.com/folder/d/0BwxMMqGvwTM-cGlMSTlubGtvTkk/edit