Hobby King DW 1800mm J3 Cub first flights

Video from the first two outings of the HobbyKing 1800mm DW J3 Cub.
AUW ready to fly 2070g
Motor SK3 3542-800
Battery 4S 2200
Prop APC 13 x 4 E
This kit has a lot of issues therefore the model is highly modified from the original kit.
Modifications include:
1. Rear window shape altered to match prototype.
2. Front triangle window increased in size to be more scale.
3. Filled in non-scale door to save weight of hinges, magnets, ply doublers etc.
4. Top hatch increased in size and made into a clear panel.
5. Motor mount re-made to reduce weight and to provide 2 degrees down thrust missing on the original.
6. Kit undercarriage discarded and replaced with our own design, being more robust and saving half the weight.
7. Incorrect wing dihedral reduced by re-boring wing locating tube holes in ribs 1, 2 and 3.
8. Wing tip shape altered to be more scale and more than half of its weight.
9. Ailerons re-made and reduced in length to be more scale and save weight.
10. Elevator shape corrected to be scale which also enlarged the tail plane area which was undersized.
11. Replaced wing leading edge with lighter dowel instead of fibreglass tube.
12. Discarded kit aluminium struts and replaced with light weight cedar & carbon ones.
13. Added scale LE wing roots in cabin.
14. Fuselage radically cut away to reduce weight in all formers & sides, top and bottom.
15. Cowl had non-scale “smiley” hole filled and scale holes cut.
16. Scale 3D printed Continental C65 engine made and fitted to cowl.
17. Motor changed from recommended 4250 600KV to the SK3 3542-800 saving 150g.
18. Changed recommended 6S 3000mAh battery to a 4S 2200mAh battery saving 150g.
19. Re-drilled the incorrect rudder and elevator horn holes.
20. Added scale pilot.
21. Changed rudder to pull-pull cable actuation.