Builders are awesome tinkerers and inventors, and they come up with improvements to the original design. Luckily they aren’t’ shy about sharing information!

New Sportsman tailwheel spring.

Tailwheel Springs

I’ve never been entirely satisfied with the way the tailwheel leaf springs are secured to the tail cone, especially when banging them off of...

Battery Backup

Two Weeks To Taxi Sportsman have been all built using one of two Odyssey motorcycle batteries. Most taildraggers were built using the PC 680...
GlaStar enlarged cargo door modification

Large Baggage Door for the GlaStar

If you ever thought about installing a larger cargo door for your GlaStar, now is your chance to do it. When the Glasair factory was...
Figure 1. Schematic Diagram, Digital TDR Fuel Transfer Controller

Fuel Transfer Controller – Lower Cost Version

The fuel transfer controller in this article using an off-the-shelf Time Delay Relay (TDR) yields a simple, effective circuit for this critical function. But...
Auto-Timer parts

Fuel Transfer Pump Auto-Timer Group Purchase

It’s been a while since we made a group purchase and the gang had started suffering from withdrawal symptoms, but luckily Rocky Morrison stepped...

BRS System Available for GlaStar & Sportsman

Through the efforts of GAOA member Chris Bowles, an engineered package system using off the shelf BRS components in a soft pack is available...
Sportsman cargo net

Cargo Net for Sportsman

This tip was submitted by Heidi Tillinghast. Materials 1.5" nylon webbing #18 needle #69 Nylon bonded thread 1.5" Webbing clips All of this is available in...
Martin Baumer's GlaStar rear seat

Martin Baumer’s Glastar Rear Seats

Having room for a rear seat that could fit two children or one smaller adult was one reason we chose the Glastar. My wife...
GlaStar strut to fuselage fairing, top view

Jeff Liot’s GlaStar Mods

Jeff Liot has done outstanding work on his GlaStar. Here's a bunch of mods that he's done. You can contact Jeff at

Revised GlaStar Upper Door Latch

This modification was sent by Paul Hansen. This drawing shows the original aft upper door latch drawing from the manual plus the revised latch I...