Home – Sonex aircraft parts


About Peter Anson

Ansoneng.com is essentially me, Peter Anson. I am a former engineer, motorcycle dealer, school teacher and engineer (again).  As an engineer I have been mainly involved in structural testing of aircraft parts as well as complete aircraft, but I didn’t start flying until about 15 years ago.  Since 2012 I have been flying my own home-built Sonex, which took me about 6 years to build from plans.


The Sonex is great fun to fly, especially when powered by a Jabiru 3300 engine.  I highly recommend the Sonex.  It is light, strong, not difficult to fly with a low stall speed and good control feel, and it is fairly straightforward to build.  It isn’t in the class of a Vans RV7, but then neither is the price.  During the course of the build, and since, I inevitably came across some minor aspects of the design that I wasn’t entirely happy with.  In the “Products” section I’ll present some parts that I have found to work particularly well.

Airventure at Oshkosh 2017

I’ll be visiting Airventure this year, my first time, and hope to be able to put faces to the names of some of the Sonex builders that I have been in email communication with over the past 18 months.  I hope to see you there!

IMGP4060 (800x510)  PRODUCTS

Australia Icon SONEX TRIPS


If you want any information on any parts, you can contact me by email at: peter@ansoneng.com


Recently added pages

Arkaroola 2017 – my first true “outback” flight

NACA intake vent




Operation of the quick-lift jack

Old Station Fly-In, Raglan, Queensland  

Is it worth travelling over 1800 nautical miles for a fly in – of course.

Motorcycle Madness

Motorcycle racing is a lot of fun – when it doesn’t hurt.

Recent changes to my own Sonex

After a long trip last year I decided to try to improve the seats in my Sonex, not by fitting Confor-foam but by copying the shape of my car seat which I knew worked.  I have driven my Ford Focus for up to 17 hours in one day with no back aches.  I did not make any change to the seat base as that has not been a problem.  I made some rough measurements and here’s the result:  This is the seat back.

It was carved from 30 mm blue polystyrene foam.  The back is 353 mm wide by 400 mm high.  Maximum thickness of 30 mm is located 150 mm from the bottom edge and it tapers to about 2 mm at the top and bottom.  The sides are carved from the same 30 mm sheet.  The maximum side depth of 70 mm is located about 180 mm from the bottom.  It just slips in behind the existing seat-back cushion which in my case is 50 mm foam rubber.  I think the seat cushion should be thinner now but this was just a try-out.  The first time I used it was for my trip to the Old Station fly-in.  On that trip I flew up to nearly 6 hours in a day.  It felt comfortable from start to finish.