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Bob Hadley

Bob Hadley
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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.

Fuel Cap Dipstick (and Always Chock Your Wheels)

Before I delve into this month’s project, here’s the backstory on where it came from: I started my flight training with 10 hours in...

Shop-made Blind Rivet Nut

Blind rivet nuts, also called rivnuts, rivet nuts or insert nuts, are a clever way to add threaded bosses to thin-wall sheet metal structures...

Cylinder Hones and Honing

Honing and lapping are similar inasmuch as both employ abrasive action to remove metal and refine the finish of the surface that’s being honed...

Laps and Lapping

Lapping was an important step featured in two recent columns. Last month’s gauge block project and the September 2020 drain adapter both demonstrated basic...

Confessions of a Blockhead

Gauge blocks are the foundation for pretty much everything. At least everything that has to do with precision measuring and manufacturing. I use parallels,...

Light Sport Repairman—Maintenance

Have you ever thought about becoming a licensed airframe and powerplant (A&P) mechanic, but put the idea out of your head because of the...

A Seal Deal

Radial oil seals, the kind found on rotating parts such as crankshafts, cam shafts and axles, are wear items and occasionally need to be...

Prop-aganda

The other day I heard about a guy at my local airport lamenting the cost of overhauling the prop on his $4 million SOCATA...

Billet or Weldment With Off-Axis Turning?

People tend to design around their particular expertise. A machinist will design based on machining parts out of solid billet, a welder will design...

Ye Olde Slip Roll

This month’s project is a follow-on to the Pietenpol muffler that was the subject of the Home Shop Machinist column in the May 2019...

In Case You Missed it

Around the Patch

In keeping with the spirit of this years Directory of Plansbuilt Aircraft, Editor-in-Chief Marc Cook extols the virtues of enjoying the process of building of an airplane as much as the flying of it.

Mike and Laura Starkey’s RANS S-21: Part 1

Part 1: foundations of the build.

Shop Upgrades

Part 1: Do-it-yourself epoxy flooring.

2019 Engine Buyer’s Guide

In search of the good stuff.