I had a lesson the other day with one of my Olympic Recurve students and he was complaining that the bowstrings he bought for his 68˝ recurve bow produced brace heights that were too high, even with no twists. I asked if the strings had been “shot in” and he said they were.
Bowstrings made with modern materials need many fewer shots to temper them than do older materials (Dacron and earlier). The old rule of thumb was 100 shots were needed, now I would estimate 30-35 should be sufficient. After any stretch has occurred, the string is twisted to create the desired brace height. But this process is of no help if the untwisted string is too short.
This situation reminded me that on many occasions when buying large numbers of bowstrings for archery programs that many, if not most, were too short, producing quite high brace heights. On beginner bows this is not so much of a problem, the only one I could think of is making sure the archer’s armguards were placed farther from the wrist to provide the protection necessary. But on recurve bows of serious archers …
So, here is my question (please respond with a comment):
Have you experienced buying commercial bowstrings that turned out to be too short for normal use?
Any wisdom you want to share regarding how you cope with this would be nice. (I make my own bowstrings, but this is not an option for most archers.)