Had a set of Dynamite bell cranks and personally didn't like them. I bent the alum drag link, that attached the two cranks together so many times that it would take nothing to bend them out of shape again (metal fatigue).
Then after a rebuild noticed that one of the arms on the crank was actually bent too, so I order up some GPM alum.
Right away the difference between the two was really noticeable.
Dynamite on the left, GPM on the right
I think this picture shows how beefy the GPM is over Dynamite.
I will say that Dynamite fit is excellent, where the GPM bell cranks fit is not so great. You can see that I had to shim up the ball joints to clear the servos. Thats the links from the servo to the bell cranks.
But GPM motor brace is another story, I don't like them at all. Smaller, lots of sharp angles that will lead to cracks over time, and just looks cheap compared to Dynamites.
Look at how Dynamites brace is machined, nice round flowing edges with no sharp angles. No chance for cracks to form.
Dynamite on the left, GPM on the right
