Got a set of RG20A ESC for my next mini quad build from David, Rotorgeeks. This ESC weights about 13 grams with some 11cm long 18AWG wires. Bare ESC without cables and wires claims to be 4g only. Compared to the DYS SN20A ESCs, 7.4g with wires and 2g without.
Finally I finished building the ZMR250 V2! It’s kind of a rebuild as I simply migrated most of my components from my old ZMR mini quad. However I am using some new FPVModel 2206 motors and DYS SN20A ESCs with this new frame. :-)
A few weeks ago we received a PDB from FlyingLemon, designed specifically for the ZMR250 Frame. This is by far the most sophisticated PDB I have seen for the ZMR mini quad, and I can see how much effort the developer has put into this project.
Today we will be reviewing the FPVModel MC2206 2000KV motors. This 2206 class motors are designed for FPV racing mini quad. If you are looking for more speed than 1806 or 2204 motors, this could be a good choice. They are also doing a deal on “buy 4 get 1 free” offer, at $18 each, not bad!
I was asked what the differences between are EMAX MT1806 2280KV, EMAX MT1804 2480KV, and EMAX MT2204 2300KV Motors. And which one is the best motor for 250 size mini quad? These motors are very similar in price, mainly different in weight, size, and power. It’s not always true “the more powerful the better”. Stronger motors also draws more current, thus gives you less flight time. Finding a good balance, or knowing what you are after is the key here.
ZMR250 is probably the most popular mini quad frame, because of its affordable price and practical design. However it’s not the most trusted frame due to the variable quality, and the large amount of fake carbon fibre frames on the market.
I get asked a lot, “what’s the flight time on your quadcopter?” It’s hard to answer because it depends on many factors, such as how fast I fly, what battery I use, how windy it is.
In fact, a lot of people are confused by the difference between “flight time” and “hover time”. Some people brag about their “flight time” over xx minutes, which in fact is just hover time. When they really start flying faster and doing acrobatics, their “flight time” drop right down!
So yesterday I tested a few popular propellers on my favourite mini quadcopter motor, the Cobra 2204 1960KV brushless (not affiliated saying that! :D ). The propellers I tested was Gemfan 5030, 5040, 5045, 6045, and HQ 5045 Bullnose, 6045.
Some motors come with CW (clockwise) and CCW (counter clockwise) prop shaft threads. The difference is the thread orientation on the prop shaft are the opposite. That means one prop nut can be fastened by rotating clockwise, and the other prop nuts needs to be rotated the other direction.
I have the Frsky D4R-II Receiver, in PPM mode, signal comes out from Channel 1 and RSSI comes out from Channel 2. You can have RSSI displayed on OSD by connecting it to the FC or OSD directly.