From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 5 Nov 2022 02:52:25 +0000 (+0000)
Subject: topeak-mtx-tortec-expeditionrack-adapter: wip
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=dce3b8e14b592b7519b674973368abafa22fa755;p=reprap-play.git

topeak-mtx-tortec-expeditionrack-adapter: wip

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 69bb82e..6663816 100644
--- a/topeak-mtx-tortec-expeditionrack-adapter.scad
+++ b/topeak-mtx-tortec-expeditionrack-adapter.scad
@@ -18,7 +18,7 @@ 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 = 19.65; // bolt centre to rail centre, rail to rear
+rear_to_cross_rail = 39.65; // bolt centre to rail centre, rail to rear
 
 general_gap_y = 1.0;
 
@@ -240,14 +240,19 @@ module Principal(){
 		     +main_sz_x_fam/2){
 	  rotate(-90)
 	  difference(){
-	    hull(){
-	      for (y = [
-			$foreaftmaint_rail_y - rack_rail_dia/2 + grasp_large_r,
-			adapt_main_top_y - grasp_large_r
-			])
-		for (dx= [-1,+1] * rack_rail_dia/2)
-		  translate([ -$foreaftmaint_rail_z + dx, y ])
-		    circle(r= grasp_large_r);
+	    union(){
+	      rectfromto([ -$foreaftmaint_rail_z, adapt_main_top_y ],
+			 [ 0, block_y_min]);
+	      hull(){
+		for (y = [
+			  $foreaftmaint_rail_y
+			  - rack_rail_dia/2 + grasp_large_r,
+			  adapt_main_top_y - grasp_large_r
+			  ])
+		  for (dx= [-1,+1] * rack_rail_dia/2)
+		    translate([ -$foreaftmaint_rail_z + dx, y ])
+		      circle(r= grasp_large_r);
+	      }
 	    }
 	    translate([0, adapt_main_top_y])
 	       rectfromto([-500, 0], [500, 500]);