If you have ever had to do a tyre change on your Sonex, you’ll know it’s pretty awkward. For a start, there’s no jacking point. I solved that one a couple of years ago by fitting Tracy O’Brien axles which extend inboard, effectively making a hard point. I recommend the TOB axles for their excellent value and quality.
For those who are not keen to mess around changing axles, see “Clamp-on hard point” further down page.
I still needed a small jack, preferably light and compact enough so that it could be packed with the tools on a trip. I always carry a spare tube in my kit, but I have often landed at totally deserted airfields so help lifting the aircraft is not necessarily available.
Here’s my solution: a quick-lift lever jack that takes up very little space and has a mass of just 400 grams, well under a pound. As you will see in the photo, the leg fairing must be removed.
NOW IN STOCK
The jack is intended to lift any wheel of a light aircraft such as the Sonex – around 160 kg or 350 pounds. The prototype has been tested safely to over 300 kg or 660 pounds but to raise that mass you would need to lift 90 kg or nearly 200 pounds at the handle. As I said, it’s for light aircraft.
Here’s a link to a short video demonstrating the use of the jack:
…and another by Brett Ahearn doing the same thing:
Clamp-on hard point
This fits the standard Sonex axle to give the Sonex a jacking point. It has a high friction internal surface and is retained by two “Norma” hose clamps (supplied). The top of the jack is recessed to positively locate on the hard point.