Mods

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

Jacking adapter drawing

GlaStar Jacking Adapter

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Here is my jacking adapter for my GlaStar. As you can see, it requires that the cut-outs for the other landing gear legs be...

Sportsman Cleared for Flight Testing with UL Power 520i Firewall-Forward

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The UL Power 520i engine is much lighter than the typical Lycoming installation. I moved the engine six inches forward and was still worried...

A New Water Rudder Design

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Although I have greatly enjoyed my Sportsman’s amphibious floats (Clamar 2500’s) over the past 9 years, there have been a few issues that have...
GlaStar seatpans with high-density foam

Ken Wickland’s Cockpit Modifications

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Ken Wickland is a craftsman. All you have to do is to look at his tool chest to know that his workmanship will be...
The Power Flow system (left) has a much larger final exhaust pipe and a smaller heater muff compared to the standard system (right).

Perking up the Performance of a Glasair Sportsman

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More power. Everyone wants it, but how do you get a real performance increase without tearing your engine apart? Power Flow Systems, Inc. has...
Carbon-fiber elevator rib reinforcement

Carbon Fiber Elevator Rib Reinforcements

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This tip was sent by Michael Harfst. An extra note for anyone considering a stiffener for the elevator end rib. I have the fiberglass tips...
Gravity fuel flow schematic

Orville’s Gravity Fuel System

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Fuel system problems are the leading cause of experimental airplane accidents. All fuel systems should be carefully evaluated and thoroughly tested prior to flight....
Cargo door mod installed on the GlaStar

Glastar Cargo Door Mod

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Production and delivery of the large size baggage door kit has been going very well. To get an idea of the scope of the retrofit,...

LED Lights From Baja Designs

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These lights were on sale a few weeks ago so I took the plunge and bought a pair in SPOT pattern - these are intended...

Seat Cushion for the Tall Aviator

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I built my Sportsman via the Two-weeks-to-taxi program in November, 2018. The seat cushions that come with the TWTT Sportsman are fine for most...