Quickie Gauge inspection tool
Attached are two files, a .pdf and a .dxf of a clever piece of inspection equipment from an old SEMPRA newsletter that I ran across. I thought I would "cad-ify" it and post it for posterity so that others might have access to it. If there is sufficient interest, I could have a handfull of them laser cut out of some suitable material.
Here is the original text that accompanied the article:
The Quickie Gauge
Here is a short construction article on building a piece of inspection equipment that will help make pylon inspections fast, easy and simple.
This all-in-one supertool verifies applicable rule compliance of firewall, fuselage and wing minimum dimensions. Combine this tool with a tape measure, weight scale, dial caliper, current rule book and you've got the tools for a proper tech inspection.
The Quickie Gauge can be fabricated from a number of materials easily available. Wood, aluminum or plexiglas are great choices. The prototype shown is made from 1/4 inch aluminum. It should last a lifetime with the only drawback being the aluminum is susceptible to being bent. However, if the dial caliper is used to verify proper dimensions before it's use, this is no longer a problem. Those who would like to chose a material that's easy to work with, wood or plexiglas is fine. The important item is to finish the gauge with smooth and rounded surfaces to prevent any scratches on the measured item when used. A good idea would be to put mylar tape on the measuring surfaces.
Dimensions shown are just for the gauges overall size and for the throat of each gauge opening. Those dimensions work well for most Q-500 aircraft. Actual gauge opening dimensions need to be selected as required by the applicable rules. For the gauge to be used in a "NO-GO" fashion, the gauge opening should be smaller than the minimum allowable. This will prevent the tool from fitting acceptable dimensions and allow the tool to easily show unacceptable ones.
This type tool can be used for a number of events that specify minimum aircraft dimensions. The shape of the one shown easily allows the tool to be many gauges in one. The time spent cutting one out will easily be reimbursed when trying to get all the pylon equipment together for the race and during actual inspection.
THANKS to SEMPRA for this useful inspection tool
(for the .dxf file, download the "attachment.txt" file and remove the .txt extension or rename the file "Quickie gauge, dxf" because the forum won't take .dxf file types.)