[simpits-tech] MARV: Ejection Seat Relocation

Fri, 04 Oct 2002 18:54:58 -0400

Steve,

The real stick only moves about 1/32" in any one direction.  The "pivot"
point is near the center of the stick housing.  It is totally force
sensitive, well, that is not entirely true.  The sensor system is LVDS and
will electronically measure minute movement of a "slug" inside a coil.

I have a fellow classmate (who flew F-16s in Japan) that told me a story
about a friend of his that was doing bomb drop practice over the ocean with
a ship as the target.

The pilot made his run, dropped, then looked back over his shoulder to get a
view of his run.  He looked a little too long and when he returned his gaze
forward he saw nothing but ocean.

The flight recorder recorded 100 lbs. of force on the grip as he pulled back
like a maniac.  The recorder also captured the HUD with 000 MSL on the
altimeter.

Later he was drilled and grilled by superior officers.  When asked why he
pulled 9 Gs he replied, "Sir! Because I couldn't pull 10 Gs, sir!"

My point is, the F-16 grip is very robust.  As a design goal, my stick will
easily handle that force, but I don't know how well a Cougar will take it.
I need to buy one and run some experiments with the mounting mechanism.

I should point out that my stick base will also have the same limited 1/32"
movement.  You can adjust the amount of force required for full scale
electronically from about 5 lbs. to 25 lbs, but the actual movement will be
just like the real thing (virtually none).  My stick base measures actual
force on the grip, not movement.

The seat height adjustment is accomplished with a toggle switch on the right
wall of the cockpit, just behind the left AUX console.  The pilot will
clench his fist on top of his helmet and adjust the height so it just
touches the canopy.  I am going to try doing this with an electric car seat
motor on my seat.  Should work nicely since my seat and I together weigh
less than 200 - 225 lbs.  The auto manufactures design those seats to handle
300 lbs.+.

What I don't yet know for sure is if the adjustment goes strait up and down
or along the seat rails.  I think it simply rides up and down the seat
rails, but I need to find out from another Viper driver to be sure.

Marv
-- 

> From: Steve Wilson <mafsix@attbi.com>
> Reply-To: simpits-tech@simpits.org
> Date: Fri, 4 Oct 2002 17:58:57 -0400
> To: <simpits-tech@simpits.org>
> Subject: [simpits-tech] MARV: Ejection Seat Relocation
> 
> That's very interesting, Marv.  I'm 5'7", well within norms, but I've been
> worried slightly about just how cozy that fixed stick is going to be.  I plan
> to check it out within the week, as I am finally THERE - ready to do a final
> fit and glue up of the Aimsworth parts.  (Aside: - I know how to modifiy the
> original Aimsworth cockpit, and if anyone wants to know, ask.  It was not
> nearly as accurate as one would want, and hopefully this has been rectified in
> their new pit. )
> 
> By the way, Marv, have you ever had the fun of manhandling a real Viper FLCS?
> I was wondering about the pivot point on your wonderstick mod.  For practical
> reasons (the unknown real strength of the Thrusty Cougar stick core) I'm
> moving my gimbal to the bottom of the base.  I'd like a little more play, too.
> Might not be 100% Viper, but there's always a fudge factor. ;-)
> 
> Steve
> -- 
> Steve Wilson, mafsix@attbi.com on 10/04/2002
> 
> 
> On Fri, 04 Oct 2002 17:31:30 -0400, Marv De Beque wrote:
> ::::
> ::::   You may want to reconsider changing the size until you find
> ::::   out what height
> ::::   limitations the USAF specifies for F-16 pilots.  If you fit
> ::::   the limits, then
> ::::   I would just raise the seat (the real jet has adjustable
> ::::   height seats) and
> ::::   enjoy the realism.
> ::::
> ::::   If not, scaling is the way to go.  I know the Taiwan AF did
> ::::   make a slight
> ::::   mod to their F-16 to move the seat closer to the front console.
> ::::   --
> ::::
> ::::
> ::::   > From: "albert" <shizznit@ihug.com.au>
> ::::   > Reply-To: simpits-tech@simpits.org
> ::::   > Date: Fri, 4 Oct 2002 15:35:39 +1000
> ::::   > To: <simpits-tech@simpits.org>
> ::::   > Subject: Re: [simpits-tech] I Love Fridays
> ::::   >
> ::::   > I think I am shorter than u...I wonder if i am the shortest
> ::::   pitter here...
> ::::   > 5"4'...man, I was considering scaling down Speedone's ACEII
> ::::   Plans because I
> ::::   > was abit shorter! LOL.
> ::::   >
> ::::   > al
> ::::   > sydney, Australia
> ::::   > www.shizznit.com
> ::::   > simpit at
> ::::   > www.shizznit.com/simpits
> ::::   >
> ::::   > ----- Original Message -----
> ::::   > From: "Roy Coates" <roy@flightlab.liv.ac.uk>
> ::::   > To: <simpits-tech@simpits.org>
> ::::   > Sent: Saturday, October 05, 2002 2:48 AM
> ::::   > Subject: RE: [simpits-tech] I Love Fridays
> ::::   >
> ::::   >
> ::::   >> On Fri, 4 Oct 2002, Steve Wilson wrote:
> ::::   >>
> ::::   >>> How tall are you, Roy???  <g>
> ::::   >>>
> ::::   >>
> ::::   >> LOL!  After today... about ten feet tall, and then some!
> ::::   >>
> ::::   >>
> ::::   >> Sadly, come monday morning I'll be back to my diminutive
> ::::   5'8"  :/
> ::::   >>
> ::::   >>
> ::::   >> Lectures approach and I've no notes written yet.. hmm...
> ::::   >>
> ::::   >> pit - notes - pit - notes ... anyone got a coin?
> ::::   >>
> ::::   >>
> ::::   >>
> ::::   >> Roy.
> ::::   >>
> ::::   >> _______________________________________________
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> ::::   > page.  Thanks!
> ::::   >>
> ::::   >>
> ::::   >
> ::::   > _______________________________________________
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> 
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