Our SimonK ESC's have been out of stock for about 1 month now due to some supply issues with our manufacturing partner, but fortunately they have now all been resolved and are back in stock.
We also have more stock of our 20A, and 30A quattro ESC which is great if you are looking to build a quadcopter and dont want to mess around with soldering a PDB together. Other advantages of a 4in1 esc is that it includes only 1 BEC (voltage regulator to ouput 5V to power your flight controller or RC gear), the 4in1 ESC also inlcude a large single heatsync to keep the ESC's running cooler than individual ones especialy when its buried deep inside your quadcopter. The other nifty feature of the 4in1 quattro ESC is they are compatible with the USBlink device to change settings easily via USB on your PC.
Lastly I can also suggest you add our new 8 way ESC hub to make calibrating your ESC's much easier
If you are looking for a new 250 size mini quadcopter for FPV racing then the BG250 is a great option as it arrives fully assembled, an integrated CC3D, ESC's and LED lights.
We are happy to announce that our new range of muticopter brushless motors have now been added to our shop! To start we have 3 models. The MT2216 for 450 size quadcopters, MT3510 for medium weight quadcopters, and the MT3515 for heavy lift setups (these motors can produce over 2.8Kg of thrust with 15inch props!
Our 20A and 30A ESC use the BL heli firmware which is specially designed for use with multicopters. These ESC give you fast, and precise throttle response. This ESC comes pre-soldered with a Deans style battery connector and 3.5m bullet connectors so you can simply plus this ESC in to start using it!
If you need any help programming or setting up these ESC for your multicopter, please have a look at the BLheli programming manual, but if you have any other questions please let us know!