On Friday, March 16, 2018 at 10:15:02 AM UTC-4, wrote:
I ordered the same Bansbach struts (QS-28-350) two years ago for a 1978-vintage Komet with the external hinges. Only difference was I asked for 1600N and they've been fine so far.

The critical dimension for my trailer was compressed length of 452mm which is slightly less than this strut w/their standard hinge eye...Bansbach swapped in a different set which brought the length down.

Lead time for their "quick ship" items wasn't bad, seem to recall 1-2 weeks. You can custom order to any spec but lead time jumps out further.

Thanks for the info, however I'm not clear what you mean by "Bansbach swapped in a different set". Do you mean a different set of hinge eyes? Or something internal in the set. This must have been the issue with mine, and the reason for failure. The old struts had shorter eyes that were fixed to the strut, adding hinge eyes to the previously fixed side effectively increased the overall length. Could you possibly provide a part number or a photo of the hinge eyes that you are using?