Hi Nigel, Good to hear from you and hope all's well. Quite enjoy doing the beating of copper. Just about ready to stitch the cowl/plates together with rivets now that I've nearly sorted the Plug access hole-
Meanwhile, I had to come up with a fixing point I'd mentioned to secure the lower part of the cowl.
Decided on a split housing so that it can be easily assembled/removed. Machined 2 blocks of Duralumin to identical size, then drilled/tapped to bolt them together.
Excellent machining qualities of this metal made it a rather enjoyable job-
I was then able to machine the inner diameters to fit the flange it clamps to and clears the crank bearing and shaft by a few thousands of an inch (0.05mm).
It will also have a greased felt wiper washer inside to prevent dirt/water ingress-
This now gives me a platform to fix the cowl and hold it securely-
Have lots of swarf to clean off the machines now!.
Regards