Question for the Wizards. (smile)

[SGTMAJOR]

Okay folks,

I'm actually going to try my hand at making a payload model for SW-lab's fantastic SAAB 91.

The actual aircraft manual states:

Number of seats: Four (Two at 2445 mm and two at 3500 mm) (See Note: 1)

Note: 1 States: "Values of mm shown in parentheses after equiptment represents the horizontal arms from the Datum to the C.G. of the
item measured."

Datum - Fuselage station 0 located 2670 mm in front of the center of bolt in main spar fitting lower side of wing, or 3800 mm in front of
the forward side of the frame behind the rear seats.

So...... if I understand this...... I can compute (Wild A#$ guess....that 2670 mm in front of the middle of the spar is station 0.... then compute
that 2445 mm behind that is the front seat and 3500 mm is the rear seat.

Does that sound correct?

I know I'm probably making this harder than it actually is..... but I'm just trying to confirm that I am on "Somewhat" of a correct start.

Thanks for your help!!

Best wishes,
Steve

[jboweruk]

Finding the correct CofG is a bit of a suck it and see process. It's a bit of work trying to find out but the results when you get it all to come
together.

[Drew]

If you haven't already seen it, here is a tutorial to making payload models...

http://www.fspassengers.com/forum/showth...p?tid=9687

[SGTMAJOR]

Thanks guys... I appreciate the response. Yes Drew, I did see the tutorial..... and actually read it, (smile) but it really didn't mention
anything about the Datum. However, I'll figure out the CG and go from there which appears how I should start. (Okay.... I'm a little old and
a lot slow.... smile) From there I should be able to figure everything else out.

Looking at some of the samples that some of the folks made..... WOW..... I have something to shoot for now.

Take care,