"Never leave well enough alone" -Raymond Loewy

If you don't know about Raymond Loewy, let me say, "In some way, you have encountered EVERYTHING Raymond Loewy ever touched. 
Everything from Greyhound buses to your stove to the paint scheme on Air Force One."  He 'never left well enough alone.'

That could also be said of me, as well. TeamGrumman showcases continuing improvements to Travelers, Cheetahs, and Tigers.
The AuCountry Aviation Facebook Page is the ONLY place you'll hear any news about my projects.
The TeamGrumman Facebook Page is for flying enthusiasts.--- Gary

NOTE:  Search Button are on the left.  This site works best on an iMac

N28747-Perfection - This is what I think a Tiger all should be. Are there things I'd do differently?  Of course. Never leave well enough alone.

747 has a Jaguar Cowling, an IO360-B1G6, built in iPad, 2 Garmin GTN 650s, a Garmin GMA 350c, a remote GTX 345, a JPI EDM 930 engine analyzer,
a Fiberglass eyebrow, 3-D instrument panel, powder coated everything, all new wiring, (with the exception of window moldings) NO PLASTIC, buried com antennas, NO VOR antennas, flush rudder cap, one piece armrests from the front to the back, AND a custom center console with cup holders.

Jaguar Cowling. STC'd August 2009 - Not just a nose bowl with round inlets (AKA, LoPresti). It's an entirely new Fiberglass cowling with a new baffling.

Owners report up to 10 knots faster "AND" up to 30 degrees lower CHTs.  No more cracked cowling either.

AG5B NACA Inlet. STC'd April 2014 - The design of the production AG5B inlet is terrible.  The OEM inlet loses up to 1.3 inches of manifold pressure.

  This new inlet gives back that AND makes removal and installation of the cowling a lot easier.

Nose Gear Fairing. PMA'd December 2019 - This 4 ounce piece of fiberglass to replace the rubber nose gear boot took 8 years too get approved.

Plus, it lowers cylinder head cooling in straight and level flight up to 20 degrees and makes it easier to remove the cowling.

Fiberglass Eyebrow. PMA'd Aug 2014 - This is a complete assembly installation that eliminates the plastic corners and the cabin/map light rocker.

Instructions are included for modern LED lighting. Figure 8-10 hours for installation (after you install the lighting in the eyebrow).

Instrument Panel Overlay. PMA'd Aug 2014 - Who would have guess it would take 4 years to get approval to replace plastic with aluminum?

I still, after having made these panels for 15 years, have people asking if it fits a Grumman.  It fits ALL AA1x & AA5x planes.

IO360-B1G6. STC'd sooner or later - it's a 180hp, parallel valve fuel injected engine. It'll be turning a 2-blade Hartzell Scimitar propeller.

Many of you already know about the several 200hp IO360 STCs.  There is even an existing parallel valve 180hp IO360-F1A STC with a fixed pitch prop and even a couple of IO540 6-cylinder STCs.  When I told the FAA at the LA-ACO I was considering an STC for an IO360-B1G6 based on the -F1A I was told,

"Well, I hope you realize this is a completely new engine installation and it will require a cerified engine from Lycoming, instrumented mags & alternator.
It will be as if you are starting from scratch."

When I tried to explain that it's the same engine & inlet & alternator & mags & baffles & engine mount & starter and the only change was replacing the low pressure boost pump with a high pressure boost pump, he said, and I quote,

"You will still need to do a completely new installation fight test program."  Suffice it to say, I'll try a different ACO.

Fiberglass Exit Ramps. Owner Produced Part - '78 and up Cheetahs and Tigers have metal cooling exit ramps spot welded to the cowling.

These cooling ramps are simple bent aluminum ramps with nothing aerodynamically efficient about them. They also promote cracking on the lower right side of the cowling. because they don't absorb any vibration. The earlier exit ramps were a much better design. I duplicated them, adding 1 inch to the height. So far, the results are very encouraging.  For the most part, owners report a 15 degree decrease in CHTs.

Seat Latches. Owner Produced Part - The stupid latches that hold the rear seat back in place.

Have you ever put your rear seat back down? By design, you'll either need to reach over the back and lift up on the latch or simple push down the latch from the front.  Why didn't they just design it to be pushed from the front originally?

Things to know

• Baffles: There is a right way and a wrong way to do baffles.  Most of the baffles I see are installed wrong. You decide. No thumbnails. Just click the arrows.

• Buried Antennas: I first heard about this in 1985. Since then, I've come up with my own method that seems to work really well.

• CE-04-34: When I first heard about this I was surprised I'd never noticed any cracks.  It isn't that common.

• JPI Vs. EI:  This is a Chevy v. Ford or Mac v. PC thing.  You decide..

• Parking Brake:  A modern (post 1977) parking brake. There are actually two different versions.

• PFS: Power Flow Exhaust System installation the AuCountry way.

• Wheel Pants: I have master tools for new fiberglass main and nose gear wheel pants. Send money and we'll share the STC.

• Vacuum Filter: Or, how to make Vacuum filter replacement a 3 minute job for one person as opposed to a 30 minute job for 2 people.

• Windshields:  This is how I do windshields and windows.

• N8571V: My Citabria.  I got this as a fuselage and 10 boxes of parts.