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Bob Hadley

Bob Hadley
134 POSTS 7 COMMENTS
Bob Hadley is the R&D manager for a California-based consumer products company. He holds a Sport Pilot certificate and a Light-Sport Repairman certificate with inspection authorization for his Jabiru J250-SP.

Bleeder Coupling

2
Bleeding hydraulic brakes of trapped air is something everyone who builds or works on airplanes eventually has to do. The process is fundamentally simple....

Calling All Collets

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Most metal lathes come with a three-jaw chuck for a good reason: They are the best option for general-purpose work. They accommodate the widest...

A Pee-wee Herman

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You can DIY a small preheater for almost nothing.

Alternative Energy Projects

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This month I’m taking a step back from doing the usual aircraft-related project to look at some “off the grid” projects that take advantage...

It’s a Knockout

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When it comes time to remove and replace bearings or bushings that are press fit into tubes or deep recesses, don’t be that mechanic...

Second-Thought Tie-Down Eye

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Every aircraft has tie-down points. Most of us never give them a second thought until a catastrophe strikes—like the big storm that threatened early...

Reverse Engineering a Glasair Tailwheel

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One day last summer, seconds after rolling from the hold short line to depart Las Vegas’ Henderson Airport, a freak wind gust caught David...

Panel for the Idiot Light, Part 2

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Given the compact nature of the Radiant Bingo 3 LED assembly, I figured mounting it would be a matter of finding some vacant real...

Low Fuel, Idiot, Light

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In the year 2019 BC (before COVID), I made a number of cross-country trips between 300 and 500 miles. While these distances were well...

Cogswell’s Molds, Part 2

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Last month I discussed the slump and drape molds that Steve Cogswell used for making fiberglass concealers/accessory panels for his RV-8. (Also see “A...

In Case You Missed It

Homebuilt Accidents: Comparing the Causes

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Do certified aircraft have different types of accidents than Experimentals?

Home Shop Machinist

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Cure for the common threadache.

On the Level

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A few months back in this very column, I suggested that pilots should keep...

Raising the Misery Bar

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The Dawn Patrol