....And to add more to the thread...

The LS-6a did not come with a crotch strap (at least, mine didn't). I
bought a couple of large fender washers and glassed them to both sides of
the seat pan just below the stick, drilled through, and bolted in a fifth
strap. The buckle already had a slot for a crotch strap. Years later my
partner had a stall/spin at low altitude. He credits the crotch strap with
saving his life.


"Papa3" wrote in message
...
Not to hijack the thread but...

When I was researching 5 and 6 point harnesses about a decade ago, I ran
across a lot of writing about the purpose of the various belts. The
shoulder straps are actually NOT supposed to hold you down; they prevent
your torso from rolling forward in a sudden de-celeration. The
lap/thigh/crotch straps are really charged with keeping you anchored to the
seat. The problem, especially with earlier generation seat pans, is the
geometry of the anchor points isn't optimal. There were a couple of good
technical papers on the topic; they're on an old desktop machine somewhere
around here...

P3

On Saturday, September 7, 2013 11:44:06 AM UTC-4, Dan Marotta wrote:
snip I love my Speed Astir, but there is NO way to tighten the belts

enough to prevent cranial /canopy violent interference at maneuvering
speed

ona bumpy daysnip



Had the same problem with my first LS-6a. The fix I came up with was to
sew

velcro to the shoulder straps such that when you tightened them you could

connect the velcro. They'd stay tight.