Yes, Tom, I certainly did have some derailments. But I was forced to alter the turnout for that location. It took some bending, some re-soldering and moving of rails a smidgeon, and so on.
It takes a deep breath, a leveraging surface, and slow, steady pressure to get even a slight depression on one route. Then, you may have to tweak the frog rails…oy, what a headache. Even worse, these are Fast Tracks turnouts that are meant to be rigidly soldered rails to PCB ties that do not want to bend. So, I simply cut the longer ties that run under the frog rails about an inch past the V. On another, on the other side of the layout, I had to bend the approach rails to the points slightly so that the straight #8 would conform, on the diverging route, to the descending curve. That meant, necessarily, that I also had to bend the diverging frog rails at their tips, where the turnout-proper ends, so that the curve’s integrity was kept. If you look closely at the through route in my photo, you can see the problem when you have to meet a curve right away…an abrupt transition. Fortunately for me and my plan, it is a mine spur, and going is meant to be slow…whew!
If you ask me, don’t do it. Alter the plan and/or move the turnout to where it can be on a planar surface, including about 3" of approach track at each route. WS curved #7.5’s are great if they meet your criteria, and I recently ripped out one and replaced it with a curved #8 which was even better for my radius at that location. They’re nice turnouts, work well, and I recommend them…the insulfrog ones are what I use.
It can be done, but it isn’t much fun. Getting my turnouts to work well was the single biggest headache for me in my entire layout experience. The Fast Tracks turnouts are A-1, but they make jigs for every configuration except for bi-grade routes. Fudging, as I stated, is a trial.
-Crandell