15-04-2021, 05:26 PM
I've a home made top opening screen on my Trial Chummy. It's very similar to that Charles shows for his Ulster although, obviously, it pivots at the top, not the bottom. The butterflys work in the same way. When attempting a trials section we've always opened the top of the screen and tightened it with the butterflys and it's never fallen down in 13 years of bouncing up and down trials hills. The use of stainless is a good suggestion as is a wipe of Copper Slip on the threads of the butterflys for the same reason.
Steve
Steve