topeak-mtx-tortec-expeditionrack-adapter: strf

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 4a75e91e36a290f0e9afa4ed24659aa5a7e94f22..557391c724bb7271744a8f3628eae2ff0bfa8c9f 100644 (file)
--- a/topeak-mtx-tortec-expeditionrack-adapter.scad
+++ b/topeak-mtx-tortec-expeditionrack-adapter.scad
@@ -6,6 +6,9 @@
 
 include <utils.scad>
 
+// strength factor
+$strf = 0.25;
+
 brk_recess_actual = 5.20;
 
 rack_rail_dia = 10.40 + 0.50;
@@ -35,9 +38,9 @@ brk_bolt_nut_across_flats = 7.86 + 0.50;
 
 brk_overall_w = 90.07;
 
-main_sz_y = 20;
-grasp_sz = 12;
-beside_strap_sz = 8;
+main_sz_y = $strf * 20;
+grasp_sz = $strf * 12;
+beside_strap_sz = $strf * 8;
 
 $fa=10;
 $fs=1;