Re: PFE wood ice reefer underframes
Tony knows more than I do, but the RR Design did not "replace" the 30-ton Bettendorf underframes on PFE reefers. They were a means to increase the number of cars PFE could get, without being limited by Bettendorf. And old Bettendorf underframes were used in PFE rebuilds up through the R-30-21 class in the mid-1940s.
I use the terms "RR Design" and "Built-Up" interchangeably for those underframes. Not sure I have a preference. Many diagrams use both.
Here is a summary about them:
I'll soon announce here more info on PFE wood reefer rebuilds on my SmugMug site.
If there was a significant problem with cracking of Bettendorf underframes on PFE reefers, that's news to me.
Laguna Beach, CA