The eachine racer is build from weak material. Eachine used a hybrid or mixed material out of carbon and I think fibreglass. Thats why they can offer this tiny devil for a really cheap price. Fibreglas is more flexible than carbon so the longitudinal strenght is around the half of carbon and the weight is at the same time up to 2 times higher than carbon. As far as I can see they used a hybrid which looks like carbon from the outside layer but is weaker and flexible. So the weight is higher than pure carbon. I will go into this later when I will go for optimizing the fotzie more. Attached there is a photo from the milling dust. At carbon the dust is completely black. Milling parts from the eachine will be a mixture of black and white which is a indication for another material. Eachine tried to find the best of all worlds. A cheap price and minimum costs.
My conclusion of this is mixed. They used weak and heavier materials for the frame and at the same time they use plastic screws on the mountings for the FC and the power distribution board. As far as I go deeper into the construction I figure out the weak points of this setup.
