View Full Version : Coil Spring/Bungie Shock Strut Weight

Jim Miller
03-09-2011, 03:55 PM
I just completed Marty's (57) designed shock struts. I liked the design but would make
one minor change if I was to do over. The collars have about 1/4" of tube used to align
the springs running past the 2" washers. I would extend this to 1/2" to 3/4" to allow the
addition of spacer washers to increase spring preload if needed later. I built 1/2" shorter
than the standard 28 1/4" bungie strut and put in 1/8" of spring preload to be increased
to 1/4" by use of a 1/8" rubber shock washer made from tractor supply farm machine belt
material. I just weighed the spring strut and a Piper stock Bungie strut with bungie's
in place. The Bungie was 3 5/8lbs and the Spring Strut was 4 1/2 lbs. Not too much
of a weight penalty.