topeak-mtx-tortec-expeditionrack-adapter: comementary etc.

Change comments to be what we actually measured.  Restore value
to actual.  File not actually fixed to properly handle these.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/topeak-mtx-tortec-expeditionrack-adapter.scad b/topeak-mtx-tortec-expeditionrack-adapter.scad
index ebad7eccb441408cc626c4d99ab3324924615244..67b6bb2e42f7189339dc4210cc8246099c10263d 100644 (file)
--- a/topeak-mtx-tortec-expeditionrack-adapter.scad
+++ b/topeak-mtx-tortec-expeditionrack-adapter.scad
@@ -16,9 +16,9 @@ rack_rail_dia = 10.40 + 0.30;
 rack_width_inner = 115.86 - 1.0; // between insides of rails
 
 rear_elevation_nominal = 10.04;
-// ^ top of rack to bottom of bracket, at rear bolt hold
-rear_to_front_distance = 230;
-rear_to_cross_rail = 39.65; // bolt centre to rail centre, rail to rear
+// ^ top of rack to bottom of bracket, at rack cross tube (fam)
+rear_to_front_distance = 230; // rack cross tube (fam) to very front end
+rear_to_cross_rail = 9.65; // bolt centre to rail centre, rail to rear
 
 general_gap_y = 1.0;
 
@@ -84,6 +84,8 @@ brk_bolt_nut_top_y = -brk_nearbolt_recess_depth
                       
 brk_bolt_nut_r = brk_bolt_nut_across_flats/2 / cos(360/12);
 
+echo(rack_shear_ratio);
+
 module GraspElevation(){
   hull(){
     translate([ grasp_large_x, adapt_main_top_y - grasp_large_r ])