Aluminium casting and then heat treated to increase the strength.
Ian Hamilton normally used these machined from billet on all of the Egli builds and supplied many to customers including Patrick over 20 years ago. They are also a very convenient place to attach the fixed end of a hydraulic steering damper.I need to acquire several cylinder head brackets, FT3s etc. , and am looking into getting some cast and machined. They would be heat treated to bring them up to a sensible strength. If anyone else out there has a potential interest in some of these then please contact me and once I know the number I can quote prices. Either on the forum, a PM or email to enw07@btinternet.com Thank you.
also to get it better: put in two hollow bushes in the headlug to the bracket, with interference fit!!!!!!!, and then just an 5/16 rod n 2 nuts, get rid of the strange ET154 with Thread in them....Yes, you are right, I am aiming to do away the long nuts under the lug and position it directly on the head, that I feel, will give a more rigid engine unit that doubles as a frame member. I am not yet in the definite design stage but think to add a few "fins" and adjust thicknesses as required so in the end it will look acceptable. Are you going to have aluminium castings or steel (heavy!!) as original ?
Vic