Syphen
Member
- Join
- Mar 30, 2018
- Messages
- 13
- Age
- 44
I am a mechanical inspector, I am in China right now and know the system here when it comes to manufacturing. I have compared the non and original parts closely, and I can see no difference at all. The probable fact is that the non oem parts are 99% made by the same company that make the props for DJI, sure the same molds and plastics, but just different colours. Of course, if you buy the oem parts made for direct supply to DJI you will pay the top dollar price. But look at how much money can be made by using the same molds to knock out many different colours on the side. Sometimes, Chinese quality is in fact good. Just look where the DJI range are made!!
I can't believe that the differences being found are so dramatic as to affect flying characteristics, these props are identical in every way. I think it is just that because they have not come in a DJI box, they cannot be good.This is why I asked for more evidence or disaster stories.
I took some photos of the oem and non oem I will post up as soon as I can.
Well, I can see one quick difference: The OEM props seem to have 4x cap-head allen machine screws holding the blades to the hub assembly. 2 from each direction. The non-OEM seem to only have 2 longer ones that are threaded from one direction.
Also, I'd be curious if the blades were sorted based on weight for OEM QC and paired up within a certain deviation for a completed blade assembly for balance purposes. And just because a part is made in the same plant with the same materials doesn't mean that they hadn't reached end of life on the mold for OEM parts - refurbished it on their own dime and started up a knock-off production run on a worn out mold.