84yoda
I wanna be Dave
3D printed made for Dlux rear housing but will work on KR4 housing. Holders ID is 16mm and KR4 rear lock out OD is 15.50mm. You could probably get away with just a grub screw or two, but I used some 1/2" heat shrink tubing to fill the tiny half mm gap. I stretched it and got it to fit, then the holders fit perfect. Meant to hold pinewood derby tungsten slugs, 0.5-2oz each side. "thumbsup"
Here's the link to shapeways: https://www.shapeways.com/product/L59LR8MCW/dlux-berg-rear-tube-weight-hanger?optionId=63216335
Here's the link to shapeways: https://www.shapeways.com/product/L59LR8MCW/dlux-berg-rear-tube-weight-hanger?optionId=63216335