Bob Hadley
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.
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...
Lightweight Stepladder
I affectionately refer to my Jabiru light-sport as being a “low high-wing” airplane. This is because, despite it being a high-wing configuration, you have...
The Other P Factor
Late last year I flew from Southern California to Tucson and back in my Jabiru Light Sport. The flight was about 3½ hours each...
Tilting the Mill Head
Most milling machines have the capability to tilt the head to make angled cuts. This comes in handy when the workpiece can’t be conveniently...
In Case You Missed It
Viewfinder
Burt Rutan’s 1980s Catbird was originally designed for the CAFE Foundation fuel-efficiency competition, but Marc Cook wonders whether it might make a fine homebuilt kit aircraft today.
Wind Tunnel
Tail stalls have been in the news lately-Barnaby Wainfan dissects this phenomenon, and clarifies what to do and what not to do.
