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72" Extra 330SC

weaser42

30cc
72" Extra 330SC"
The 72 Extra, developed by Scott Stoops, is a model of the latest, greatest world-championship class full-scale Extra. It delivers that same performance in the very convenient 25% size. This design is extremely precise, featuring a long tail for very smooth aerobatic performance. The SC is tuned for extremely low knife-edge coupling, making knife-edge maneuvers easy and fun, even the last quarter of a knife-edge loop.

The 72 Extra easily accepts electric power or 28-36CC gas power. A canister tunnel is included along with mounts for a 30CC-sized canister, a 30CC-sized carbon tuned pipe will also fit in the fuselage. For electric power, 6S 5000mah or 8S 4000mah is recommended for 1800-2200W total. A castle BEC Pro is highly recommended

The Extra uses 4 full size metal gear servos, plus a throttle servo if needed. A second elevator servo may also be installed to balance a very heavy gasoline engine. All ball-link hardware is included, along with carbon landing gear attached to a fiberglass/carbon reinforced plate, wing bags, genuine ultracote covering, carbon wing tube, locking hatch latch, carbon-reinforced fuselage, aluminum axles, carbon tail wheel, and more.

For gas power, the 72" Extra is set up for the DLE-30 engine, and includes a firewall-drilling template for that engine and uses the standoffs included with the latest version of the DLE-30 engine. If you are not using a DLE-30, you will have to supply the correct length standoffs and drill your firewall accordingly for your particular engine.

We recommend the DLE-30 Rear-Carb engine for this aircraft, with a 20x6 (or Vess 19A or 20A) prop.

The 72" Extra includes a generic fuel tank, but the American-made Fortitude Fuel Tank is the best in the world and is a highly recommended upgrade.

Specs:
Wingspan: 72"
Length: 69"
Wing Area: 1000 Sq. Inches
Weight: 9.5-11 lbs.

Required Equipment
Engine:
25-35CC Gas (DLE-30 Recommended)
1.80-2.10 Glow (Mount not included in kit)

Gas Prop:
20x6 Xoar Sword
Vess Aero 19A
Vess Aero 20A

Fuel dot or Fuel filler
Fuel line

Electric Motor:

Hacker A50-12L with 6S 5000-5800mah 19x10 or 20x10 prop
Hacker A50-12L with 8S 3500-4400mah 17x8 or 18x8 prop
Hacker A50-14L with 8S 3500-4400mah 18x8 or 19x8 prop

ESC:
Castle ICE 100
Castle Phoenix HV-85
Hacker X75 OPTO
...with all of these, a Castle BEC PRO is recommended.

Servos:
QTY 4 Hitec HS-985MG (Good)
QTY 4 Hitec HS-7985MG (Better)
QTY 4 Hitec HS-7955TG (Best)

Red: http://www.3dhobbyshop.com/72-Extra-330SC--Red_p_15148.html

Yellow: http://www.3dhobbyshop.com/72-Extra-330SC--Yellow_p_15149.html
 

weaser42

30cc
My 72 is electric with a Motrofly 4325-380 using 6S 5000 mah and Xoar 18x10 and some ADCHobbystore graphics
 

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TEeAZ

New to GSN!
Weaser's Interesting Falling Forward Loop

I'll subscribe with this composite picture of Weaser's 72in Extra SC 330:cool:
 

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TEeAZ

New to GSN!
Hey! Who let you in here? ;) When you going to come out and fly Rogue with us again?

It's been a month of "resting" my thumbs and not out flying...... something about the humidity that gets me hot and sweaty!! :(
Actually quite busy at work and not getting enough sleep as well!
 

TEeAZ

New to GSN!
Way cool pic, don't recall seeing that one before. Took me a minute to figure if which way it was going :D
Must be losing your memory............:confused:

Kidding...never posted that before.....:rolleyes: ;)
The position of the elevator will give the idea of which way it started.
Just for fun, I also did one the other way......becomes an illusion...... sort of M.C. Escher like piece!:popcorn:
 

Vintauri

50cc
I've only had a few flights on mine so far. Picked it up second hand and refurbished it. Flying mine on 8s with a Motrofly 4325-310KV motor. Been using a Xoar 18x8 prop which flies it well but I might up that to see if I can get more punch. Hoping for some decent flights on it this weekend.

Steve
 

Luv3d

70cc twin V2
Guys,
Would 8s 2650 be too light in this? I love this machine, and would likely run a Motrolfly 4325-310?

Any thoughts?
 

gyro

GSN Contributor
I'm building this airplane as a gasser right now, but expect it to want similar batts to what I have in my 74" Edge and 70" Slick, which are 2x 4s 4000mah packs... so I'd say yes, 2650s will probably be too light, and not give you enough flight time.

-G
 
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