Rekon 4 FR Freestyle Frame Kit 4 Inches Frame This is the Rekon 4 FR Freestyle Frame. We have recently seen a lot of 4″ frames that were geared up for long range flight, it’s great to see a practical 4″ frame designed to be used in a 4″ freestyle configuration. Dave C the designer of the Rekon line-up shares his thoughts about this frame and it’s possible use. the design I developed the Rekon 4 FR to create a sub 250g freestyle platform that gests as close as possible to a “classic” five-inch quad. And while performance was the main objective, I still wanted it to be practical for everyday use: – A robust frame with quick swap arms that can take hard crashes and offers good component protection. – The option to carry light HD cameras (Naked GoPro, SMO, Insta 360). – Compatibility with a widely available battery sized (650-850mah 4S). – And finally, have some margin towards the sub 250g goal, so you do not have to worry about every gram of wire or tape you add to your build (if you are choosing the frame kit instead of the BNF). why 4 inch? A 4” platform can be built sub 250g pretty comfortably and you will be able to carry a relatively large battery for 4-6min of aggressive freestyle. The disc load is lower than on a sub 250g 5”, making it less floaty and having more momentum when you “throw” the quad during freestyle tricks. A 4” quad can carry a naked GoPro type camera easily and without a noticeable impact on flight performance. The analogue version is still sub 250 with a 25g naked GoPro and a 650mah 4S (unfortunately the digital version is not since the vista adds around 14g) 4” t-mount props have gotten pretty mainstream and there is a decent choice and availability (which is not the case for 3.5”) motor & prop choice The motor and propeller configuration was crucial to achieving the desired flight characteristics. After weeks of testing, I finally settled for an intermediate stator size with an aggressive kV. A stator larger than 1804 (e.g. 1606, 2004, 2204) didn’t seem to offer any noticeable improvement of flight characteristics while adding a significant amount of weight. Anything smaller than 1804 just did not have enough torque to make the quad feel locked and snappy enough. The best performing props were the Gemfan 4023 tribades. They are more on the aggressive side in comparison to the HQ T4x2x3 and while they can be pretty amp hungry on the relatively high kV 1804 motors, they ensure the quad has an impressive punch! Product Information Feature: Support (20×20-25.5×25.5mm) mounting holes; Supports AIO/stack installation at the same time, ultra-light and lasts super long in flying. Brand Name: Rekon Model:Rekon4 FR Freestyle Frame Material:3K Carbon Fiber Type:4″ frame Wheelbase:180mm size:180*140mm Top plate thickness:1.5mm Bottom plate thickness:1.5mm Middle plate thickness:1.5mm Arm thickness:4mm Space of top and middle plate:20mm Motor mounting hole:∅9-12 Installation holes:20x20mm/25.5×25.5 mm Support camera:19*19mm Weight:52.2g Package Includes 1x 1.5mm top plate 1x 1.5mm bottom plate 1x 1.5mm middle plate 2x 1.5mm camera side plate 4x 4mm Machine arm 2x M2*25mm Black mesh aluminium columns 6x M2*20mm Black mesh aluminium columns 5x Round head screws M3*20 4x Head cap screws M2*20 4x Cup head screws M2*12 4x Cup head screws M2*9 12x Round head screws M2*6 2x Round head screw M2*4 5x M3 Self-tightening nuts 4x M2 Self-tightening nuts 8x M3*6.6 shock-absorption balls 4x M2*4 shock-absorption Standoffs 2x Battery straps 15x200mm 1x Battery Anti-slip pad 1x TPU SMA antenna base 1x TPU antenna base 1x TPU GoPro fixing bracket 1x TPU Naked Gopro mount 1x TPU T-shape antenna fixing mount Recommended Parts:( Not Included ) Flight Controller:Zeus25/ZeusF722 mini Motor:14XX/16XX/18XX ESC:25A-40A Camera:19X19mm Propeller:4 Inches More Information Rekon Website
