User talk:Tom Griffing

Power Cube as a stressed member
Howdy Tom, I couldn't figure out any other way to send you a message. What do you think about the idea of beefing up the Power Cube and working out a set of standardized mounting points (lugs?) so that it could become a stressed member of the vehicles it's incorporated into? Not necessarily integral to the vehicle frame holding together, but at least stressed enough that it replaces some metal in the frame. It's not like the vehicle's going anywhere without a power cube anyway.

Hmmm ... strange way to communicate. My E-Mail address is: Tom.Griffing@gmail.com if you prefer a more direct means. Power Cube as a "stressed member"? I assume you mean when used with the LifeTrac? (keep in mind that it is used for many other machines in the OSE lineup)

For motorcycles, the engine case is used to bear some of the structural load. In comparison, the case of the engine in the Power Cube is the strongest part. The frame is probably next, but I don't know how it would be connected to the LifeTrac so it would provide structural support, yet being easily mounted and dismounted for other applications. If you have thoughts on this, please share.

In addition, I have considered splitting the Power Cube into two parts: An engine component and a powered component (ie: hydraulic pump, electric generator, water pump, etc). This would add new capabilities for the power output while adding the ability to switch power sources, but it also poses a challenge for connecting the components.

Suction Hose Sizing
did u mention that there were some changes made to the lines going to the pump on the power cube? i was thinking that it might be good to change the hydraulic tank design so that the output is on the other side? last time i saw the hose looped around from one side to the other, i wasnt sure if thats what you had tweeked but just throwing the idea into the mix --Dorkmo 23:50, 30 August 2011 (CEST)

Sorry for the delayed reply - I'm just now figuring how to use User Talk. Yes, I'm changing the line going to the pump - increasing it to 1" diameter. The calculations for the hose size is on the following page:

| Hose Sizing Guide

Power Cube Tools
Can you tell me what tools are required to build a power cube? I don't mean the parts for the cube itself, but the tools used to build one. I am working on setting up a shop in my garage --RootBeer 00:17, 26 November 2011 (CST)

Here's my list from memory - I will probably add to it in time. Craigslist and Ebay are handy for finding used tools.


 * Cutting torch - capable of cutting 1/2" steel. If you plan on building a LifeTrac, get one that can cut 1" steel.  I bought mine at Home Depot.
 * Vise Grip Pliers - Two or three pair
 * 6" C Clamps - Two should be sufficient
 * Metal Saw - I bought a DeWalt DW872, but anything that can cut 2" x 2" angle iron
 * Drill and bits - 9/16" bit and a regular assortment of smaller bits
 * Angle Grinder - I bought a 4" and a 7" and use them both
 * Welder - You may have a preference, but after using the MillerMatic 200 MIG at FeF and now a small TIG, I prefer the more expensive Millermatic
 * Welding Table - A steel table is helpful, but not necessary
 * Chalk Marker - Important for marking steel to cut with torch
 * Safety Equipment - Welding helmet, ear protection, safety glasses, steel toe boots, gloves, long sleeve shirt for welding
 * Wrenches - Several sizes, including 3/4"
 * Hex Keys - For the coupling set screws
 * Tape Measure - Two, as one is always misplaced
 * Paint Sprayer / Air Compressor - FeF used a gravity fed sprayer

Power Cube Drawings
Tom,

I don't know if this is the right place to contact you, but I couldn't find an email anywhere.

The Power Cube page says that Solidworks drawings of the power cube would be helpful. If that is still the case pleas contact me. I am able to produce drawings with a student version of SW.

Frederick

frederickose at gmx dot com

Frederick;

This will work as a forum, just fine. Thanks for your help using SolidWorks for rendering proper layout diagrams and such for the new Power Cube. I also appreciate your suggestion on the mitered joints for the Power Cube. This is a tremendous help. I hope to begin cutting steel soon.

- Tom

Modular power cubes
I drew on your idea for a modular power cube and discussion on the OSE-Europe list https://groups.google.com/group/ose-europe/browse_thread/thread/3b89d4ffedb4b718

to put together a concept sheet for a modular power cube design.

http://opensourceecology.org/wiki/File:Modular_Power_Cubes-small.jpg

interested in your thoughts. Especially about how you envision the coupling between engine and driven module working. --DOHill 03:29, 7 May 2012 (CEST)