Bert, I think you must not have read all this thread;
it was pointed out that shoulder strap connections
are too high and, while preventing the upper body from
going forward, do not prevent an upward and aft movement.
With current setups, no amount of tightening will
prevent this for short/small persons.


At 14:42 19 October 2006, Bert Willing wrote:
I guess we just need to secure the shoulder straps
properly ? ...

'Nyal Williams' wrote in message
...
This is somewhat analagous to reported accidents by
Cessna pilots on takeoff; if the adjustable seats
are not properly locked in their rails the seat can
slide backward, making it impossible to push the yoke
forward.

Perhaps we need a two-point attachment for each of
the shoulder straps -- the one above the shoulders
that already is in place and which keeps the body
from
being thrown forward, plus a second one from be bottom
of the seat pan, and which would prevent the body
from
moving upward and aft. This second strap could also
protect against cranial collision with the canopy.


Anyone for seven-point harness?

At 09:30 18 October 2006, Bert Willing wrote:
Doug,

the reading of an ASI is very rarely connected to winch
launch accidents,
and certainly not in the initial climb.
Sliding back in the seat (or movement of a seatpan)
during initial rotation
has already claimed a number of lives.

Bert

'Doug Haluza' wrote in message
egroups.com...

Derek Copeland wrote:
Wouldn't the exact effect depend on the relative areas
of the pot pitot and the usually very small holes
in
the T.E. probe? The AAIB are normally very thorough
in their investigations, so I am happy to believe
them,
and that this error was not the primary cause of the
accident. Neither am I recommending that you should
connect your instruments up in this way.

No, the area of the openings would not matter, unless
there was a
significant leak.

If your description is correct, then I would not assume
that the
primary cause was the straps, which as you point out
could not be
conclusively determined due to post impact damage.
Can you check the
report again and make sure you have correctly reported
the results?