Mini Drak twin tractor / puller motor nacelles with removable cap

thingiverse

This is a remix of the Nano Drak nacelles scaled up and tweaked to fit the Mini Drak. ** added a thumb hold motor mount adapter that screws in where the old pusher motor goes to help give a sturdy place to hold and launch the plane ** There is a left and right nacelle which are mirrors of each other. Be sure to install them on the appropriate wing. Thrust must be in the direction of flight as shown in the picture with the right angle. Glue in place with a copious amount of goop or similar glue. Add weight or clamp . Remove lam as shown and glue directly to foam. There are 2 different caps for 19mm and 25mm motor mounting hole pattern. I'm using the 19mm for the BrotherHobby motors but other 28x motors often use 25mm pattern. I'm running this on 6s lipo (4500mah from RDQ) and with both 6s and 8s li-ion. Li-ion are ok if you manage the throttle but sag under pressure. Parts I am using: BrotherHobby Avenger 2806.5 1700kv motors. They come in 1300kv version which would probably be fine too with bigger props. ** actually I have since switched to tmotor f90 2806.5 1300kv motors with 6x4 props which are less amp hungry than the 1800kv avenger. Running 6s APC 6x4 E and EP props Two Strix Rocket 60 amp ESCs with added heatsinks (raspberry pi collection) MR30 connectors for motor wires M3 screws to attach nacelles The screws can screw directly into the caps. But I opted to use m3 threaded inserts which are installed with a soldering iron at 400 degrees. https://www.amazon.com/gp/product/B077CL322T/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&th=1