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Gimbal Project: Difference between revisions
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<p>Back in May 2009 I had spent some time tossing ideas back and forth with a nice | <p>Back in May 2009 I had spent some time tossing ideas back and forth with a nice | ||
gent by the name of Jentron on the #flightgear IRC channel ( | gent by the name of Jentron on the #flightgear IRC channel (irc.flightgear.org).<br/> | ||
We were discussing the various methods that could be used to create a very | We were discussing the various methods that could be used to create a very | ||
inexpensive gimbal assembly for pitch & roll control in a home built flight | inexpensive gimbal assembly for pitch & roll control in a home built flight | ||
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<br/>Two "fancy" tools are going to be required to build this project. </p> | <br/>Two "fancy" tools are going to be required to build this project. </p> | ||
* 1 Step Drill. | * 1 Step Drill. This is used to enlarge the end holes in the single-gang extender box. | ||
* 1/4" Die. | * 1/4" Die. This is used for threading the ends of the centering push-rods. | ||
<br/>A cheap 1" Step Drill can be had for less than $30. | <br/>A cheap 1" Step Drill can be had for less than $30. In case you're not | ||
sure, a step drill looks like this:</p> | sure, a step drill looks like this:</p> | ||
<br/> | <br/> | ||
[[file:step_drill.jpg]]</p> | [[file:step_drill.jpg]]</p> | ||
<br/>Here | <br/>Here's a list of some other common tools you're going to need:</p> | ||
* Hacksaw -or- a pipe cutter. | * Hacksaw -or- a pipe cutter. Pipe cutters work better for cutting EMT. | ||
* Drill | * Drill | ||
* Drill Bits - 1/4 | * Drill Bits - 1/4" and 13/64" | ||
* Pop-Rivet gun | * Pop-Rivet gun | ||
* Jig Saw, Band Saw or a Scroll Saw | * Jig Saw, Band Saw or a Scroll Saw | ||
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<br/><br/>Now the first thing you're going to need to do is pop out all the knock-outs | <br/><br/>Now the first thing you're going to need to do is pop out all the knock-outs | ||
in the electrical box and then drill out the ends using the 1" Step Drill. | in the electrical box and then drill out the ends using the 1" Step Drill. | ||
The hole needs to be large enough to accept the threaded portion of the 3/4" EMT | The hole needs to be large enough to accept the threaded portion of the 3/4" EMT | ||
connector. | connector. When you're done, the box should look like this:</p> | ||
< | <br/><br/> | ||
[[file:prepped_box.jpg]] | |||
<br/><br/> | |||
Next up, you're going to have to use your vice grips (2 pair if you have | |||
them!) to position the 3" "T" bracket on the side of the extension box. | them!) to position the 3" "T" bracket on the side of the extension box. | ||
The best way to do this is to measure 1-1/2" in from the end of the "top" of the | The best way to do this is to measure 1-1/2" in from the end of the "top" of the | ||