What sice of panhead do DangerDen use ?
We have not experienced problems with cracking accross the bolt mountings.
A sneak pic of how we intend to stop our
OCPC P4-Neptune suffering from the problems we experienced in the some early designs ( oh, and maze3).
Note the 12mm Cover, and use of parallel barbs. These are bonded, and don't rely on the tapper to seal (reduces the radial loading).
This is still a test block (we will not RELEASE till we are 100% sure about a product).
It takes us about 3 weeks for R&D per design change