Thanks, Gary. That adds quite a lot wrt Gitchel .doc file I already had (without pictures).
By 80% scaling, I think you mean 80% span and cord (i.e. 64% chute area) right? In this way you are able to maintain a load of about 0.0019 to 0.0023 lb/sqinch i.e. approx 0.13 to 0.16 g/cmq as for the Gitchel chute (size of 49x26" applied to a weight of 2.5-3 lb), if I understand well. Could you please confirm?
If this is correct (and if nature scales linearly to whatever scale, that is not right the case...) the scale factor for a 100 g jumper could be around 30% span and cord with respect to your chute (1/7h of your weight) i.e. 25% with respect to Gitchel chute.
If everything is correct... bingo! I can go straight cutting the ripstop nylon!!! And the build log can start.
What do you think? Am I missing someting (that I should discover before the fist crash of my jumper)?
P.S. According to text and drawing, the Gitchel chute has 13 ribs + 2 tip ribs (i.e. 14 "channels", I don't know how to say better) but the title speaks of 7 "cells" chute. I'd say the cells are actually 14 (mmhh...) or maybe each "cell" is constituted by two adjacent "channels". Are the holes (for air pressure stabilisation, I think) present on each of the 13 ribs? Do you have a drawing of wiring to the diver, too?