Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing Fitting Brake reaction bars

Sorry..I do try to explain the dynamics more than rushing to an unexplained punchline. Blame Luddite! I used to castigate him for overlong answers, though they are always great.
Once you get hooked on the fascinating things about mechanics, you act like one newly come to religion

The punchline:

1. You want brake reaction bars to steady the front end and brace the cross-frame in hard braking.

2. BUT NOT SO MUCH AS TO PREVENT THE CHASSIS FROM BENDING/PLEATING/ABSORBING IMPACT FORCES before they reach you or your passenger

3. As for slotted tops for brake reaction bars, they are silly. How does one expected to steady the front end with a slotted brace at the most important point?!!

The Morgan flexing chassis/frames, front and back, save lives, just as Formula I cars do. They were not designed with that in mind..just a lucky feature. Brake reaction bars
that do not that have chassis fittings that shear is unwise in a dangerous impact. The brake reaction bar goal is to steady the front end when braking, not to become a
structural feature that transfers impact forces to occupants. That can be managed by merely using less robust bottom fittings.

Here are two examples, one of a trad I pulled off the internet just now and another of the Aero crash test. This is what you want these cars to look like after a frontal
impact. Not hard to find other images the same. You will notice that the occupant areas are untouched.