120 Degree CCPM conversion is done!

This is it with the 90 degree CCPM, which I still like better than the stock setup, and you don’t need a new swash. But, I like the 120 principle, so I changed the swash to the Fury swashplate later on.

Note that the anti-rotation bracket is moved to the front and the front servos mounted perfectly in-line with the pushrods. This is the conversion still with the MinAir graphite frame. Also, this is with the plastic swash anti rotation guide. I later changed to the aluminium one used in the SE kit.

Now, for 120 Degree:

The fact that the left and right pushrods are not exactly perpendicular is not really that much of a problem. It seems that it does not cause any interactions. But, given that the Bergen frame set has much more mounting area, I plan on moving the bellcranks forward anyway, giving a perfectly in-line setup.

The pushrods from the front servos are nice and straight, and everything is supported with the Fury servo supports.

The servos are right next to each other in the geometrically perfect position. Those are the large futaba servo wheels, cut down to fit like this.

T The upper plate on the servo tray is custom cut from G-10, but it’s much thinner than the stuff in the Bergen frame. The rest of the servo tray is standard for the Xcell ST kit, and Gasser. It’s lightweight, and the parts are cheap. The tray in the SE is made of graphite, and it’s really nice, but the parts are really pricy.

The rear servo is exactly where the elevator servo was. But, I added a Fury servo brace on another G-10 servo mount plate. This reduces the side load on the servo shaft. The rear bellcrank is in the ideal position, which is exactly on the same vertical level as the front B.C.s and the same distance from the mainshaft.