Re: Type C/UP trucks

Posted by Jim Courtney on Jun 18, 2021; 5:22pm
URL: http://c-sng-discussion-forum.254.s1.nabble.com/Type-C-UP-trucks-tp15497p16749.html

One other thought on the issue of side frame breakage:

I was able to insert the PBL wheel sets in each of the 4 trucks in my test print successfully the first time. I was able to repeatedly remove and reinsert the wheel sets several times before the side frames on two of the trucks snapped.

This is my first experience with printed acrylic trucks. Perhaps the acrylic material likes to stay rigid, and the repeated spreading of the side frame causes stress and fatigue in the acrylic material, leading to the breaks.

Now that I know that the printed trucks and PBL wheelset have excellent rolling characteristics, I will "trust the print" with my next order. Meaning that I will clean the printed parts, install brake beam support wires and brake beams, prime and paint the trucks, paint the wheel sets separately, and then install the wheel sets one time only, trying to never remove them.

We'll see . . .