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Mar 12, 2018, 11:31 PM
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julescrafter's Avatar
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Aerobatic Extra 300 900 mm (with Plans)


My newest RC plane and it comes with plans
Spec :
1. Wingspan 900 mm
2. AUW 700 gram
3. Battery 3S 2200 mAh - 1300 mAh
4. 4x servo 9 gram
5. ESC 30A
6. Turnigy 2831 1000kv with 9x6 prop
7. Material 3 and 5 mm foam board
8. CG 6 cm from leading edge on wing root

Free Plans available




I choose Extra 300 because I enjoy flying this type of plane when I borrow my friend's plane and also this aerobatic plane has many fans. I also choose 900 mm wingspan to make it pretty compact to carry around to flying field or wherever you want to fly it. The flying weight is around 700 gram with 3S Lipo battery 2200 mAh and 600 with 1300 or 1000 mAh battery. I installed Turnigy 2831 1000kv with 9x6 propeller and 50A ESC. This motor can be fitted with 30A ESC. It needs 4 servos for ailerons, rudder and elevators. I use 60% Expo on each flight controls.

It fly great with big 3S 2200 mAh but even enjoyable with smaller 1300 mAh. Because its wheel pants you need to land it on smooth runway or short grass otherwise it may flipped over. Add little power on landing, don't cut the motor yet, it may stall. The CG (Center of Gravity) is around 6 cm from the leading edge start from the wing root. Always make the plane a bit nose heavy on the CG the maiden flight then you can adjust it after flight evaluation. In my experience you also need to trim a bit elevator to make it able to do straight rolls.

Flying Video #1
Extra 300 RC planes (with plans) (4 min 6 sec)


Flying Video #2
Extra 300 RC plane 2nd video (with plans) (1 min 38 sec)


Build video
Extra 300 RC plane Build Tutorial Part 1 (47 min 11 sec)


Build instructions https://goo.gl/na6J6f
Last edited by julescrafter; Mar 15, 2018 at 01:34 PM. Reason: Add wingspan length
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Mar 14, 2018, 05:51 PM
Build straight - Fly twisty
Whiskers's Avatar
Congratulations!
That is a very fine aircraft you have created.
Mar 14, 2018, 10:29 PM
Scale RC Plane Lover
julescrafter's Avatar
Thanks
and thanks for the comment

Jules



Quote:
Originally Posted by Whiskers
Congratulations!
That is a very fine aircraft you have created.
Mar 15, 2018, 09:23 AM
Registered User
rajazo's Avatar
Beautiful plane. Impressive
Mar 15, 2018, 09:34 AM
Scale RC Plane Lover
julescrafter's Avatar
Thank you

Jules

Quote:
Originally Posted by rajazo
Beautiful plane. Impressive
Jun 06, 2018, 10:35 AM
Registered User
Impressive plane!
Awesome!
And your step by step tutorial (and videos) are great too!
I'm seriously thinking about building it


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