The Pro's. CA hinges are very easy to use. They install quickly with no fuss and are very durable on a
.40 -.60 size bird. The round robarts are more durable. They also have better travel on a plane with extreme
amount of throw like a 3-D type aircraft. The con's. If the CA hinges are not installed perfectly parrallel
to one another they will crack and break. They can be replaced by using a different area of the control surface
but you will run out of fresh wood in a hurry. The Robarts only have two problems I've seen besides
the more time consuming install. I lost a Goldberg Ultimate because the fin snapped at low altitude in a flat turn.
The fin on the Ultimate is thin and the hole needed to fit the hinge was to big for the amount of wood I had.
Now this was not the fault of the hinge but should be watched on smaller scale planes. Second, they must
be installed with epoxy. The CA seems to weeken them drasticly. Once again , not the fault of the hinge, but
watch for it. Finally I would say, not all CA type hinges are created equally. Before putting them in your
bird glue one into a scrape piece and try to pull them apart. Hope this helps. later daveo