Official RotorScale AH-1W Cobra Super Scale 470 Size GPS Stabilized Helicopter Thread

[3D-Seth]

Link to purchase:

https://www.motionrc.com/products/rotorscale-ah-1w-cobra-super-scale-470-size-gps-stabilized-helicopter-rtf-rsm-470-r-ah1-gr

AH-1W Cobra Super Scale 470 Size GPS Stabilized Helicopter - RTF from RotorScale - RSM-470-R-AH1-GR

Strike a commanding presence in the air with the RotorScale AH-1W Super Cobra 470 Size GPS-Stabilized Helicopter. Modeled after the iconic twin-engine attack helicopter, this scale replica captures the aggressive lines, narrow fuselage, and unmistakable silhouette that define the Cobra’s legendary role.

Built on RotorScale’s proven 470-size platform, the AH-1W Super Cobra blends high-detail scale modeling with advanced GPS-assisted flight control, delivering a helicopter that looks incredible in the air while remaining approachable for pilots newer to helicopters. The streamlined fuselage, tandem cockpit layout, and realistic rotating chin turret give the model a purpose-built, mission-ready appearance from every angle.

Advanced GPS stabilization delivers exceptional stability by actively holding both altitude and position, allowing the helicopter to hover confidently with virtually no input. Integrated features such as Return-to-Home and intelligent flight protection provide added confidence while learning. As pilot skills advance, Angle Mode and Manual Mode unlock progressively more direct control, providing a smooth transition into full helicopter flight characteristics.

Arriving completely Ready-to-Fly, this helicopter includes everything needed to get airborne, making it an ideal choice for pilots looking to step into high-detail military scale without the complexity of a custom build.

Fly Out of the Box! The AH-1W Cobra arrives fully assembled and ready to take to the skies. There is no setup hassle. Simply charge the battery, install the main blades, add 4 AA transmitter batteries, and you are ready to fly.

Advanced GPS Stabilization Advanced GPS stabilization delivers rock solid, beginner friendly flight performance while also allowing pilots to progress into more advanced control. Available flight modes include GPS Mode, Angle Mode, and Manual Mode, accommodating a wide range of skill levels.

Authentic Gunship Animation The scale rotating chin turret responds in real time to control inputs, delivering an ultra-realistic Cobra gunship appearance during flight.

High Quality, Detailed Fiberglass Fuselage The exquisitely crafted fiberglass fuselage is molded with panel lines, rivet details, and exhaust features, delivering an exceptional level of scale realism from every angle.

Realistic LED Lights Integrated LED lighting enhances scale authenticity and improves visibility during early morning or late evening flying.

Large, 470 Size The large 470 size airframe, combined with an 840 mm diameter main rotor, provides impressive stability, power, and presence in the air.

Features:

• Completely Ready to Fly package includes everything needed to start flying right away, just add 4 AA transmitter batteries
• Advanced GPS stabilization delivers rock solid, steady, beginner friendly flight performance
• Larger 470 size airframe offers enhanced stability, presence, and power for confident outdoor flying
• Scale, rotating chin turret responds in real time to control inputs, delivering an ultra-realistic Cobra gunship look in flight
• High quality, professionally painted fiberglass fuselage molded with panel lines, rivet detail, and exhaust features for maximum scale realism
• Realistic LED lighting system enhances authenticity and improves visibility
• Professionally painted dark gray main blades replicate the authentic military appearance of the full scale Cobra
• Three selectable flight modes adapt to pilot skill level, including GPS Mode, Angle Mode, and Manual Mode
• Return to Home and auto land function ensures safe, easy recovery, especially for newer pilots
• Carbon fiber frame construction provides excellent rigidity while remaining lightweight
• Brushless main and tail motors deliver high efficiency, strong performance, and long-term reliability
• Reliable 2.4GHz control system ensures solid, interference free connectivity

Includes:

• RotorScale AH-1W Cobra Super Scale 470 Size GPS Stabilized Helicopter – RTF
• 2.4 GHz Transmitter
• Flight Battery
• Charger
• Instruction Manual

Requires:

• Four (4) AA batteries for the transmitter

Product Specifications:

AGE LEVEL : 14 and Up
SKILL LEVEL : Intermediate
BUILD TIME : Less than 10 minutes

Class / Size	470 Size
Power Type	Electric
Rotor Type	Collective Pitch
Body Material	Fiberglass
Overall Size (L x W x H)	810mm (31.9 in) x 210mm (8.3 in) x 270mm (10.6 in)
Flying Weight	1228g (2lb 11oz) without battery
Main Rotor Diameter	840mm
Main Rotor Blade Length	376mm
Tail Rotor Diameter	127mm
Tail Rotor Blade Length	N/A
Tail Drive Type	2205 2450Kv Brushless Motor
Cyclic Servos	3x 12g, Digital, Metal Gear Servos
Tail Servo	N/A
Power System	2820 1300Kv Brushless Motor
Electronic Speed Control	60A, 2-in-1 ESC
Recommended Battery	4S 4000-4800mAh LiPo Battery
Battery Compartment Size (L x W x H)	N/A
Required Radio	2.4GHz Radio (included)
Skill Level	Intermediate
Build Time	Less than 10 minutes
Recommended Environment	Outdoors

[PilotTony]

Can this handle a 4s 5200mah lipo?

[xviper]

Can this handle a 4s 5200mah lipo?

What would be your concern? The MD500 470size flies with a 5200 and it weighs more than the Cobra. I'm not sure why they state a different battery size range for each one. Both use the same drivetrain. A 400mah max size difference is nothing for these helis. Looking at the battery compartment, it even looks like you can easily shift the battery around to compensate for the small difference in weight to CG it properly.
Since this RTF model comes with the 4800mah, I take it you would like to also use the 5200mah from another Roban chopper?

[PilotTony]

What would be your concern? The MD500 470size flies with a 5200 and it weighs more than the Cobra. I'm not sure why they state a different battery size range for each one. Both use the same drivetrain. A 400mah max size difference is nothing for these helis. Looking at the battery compartment, it even looks like you can easily shift the battery around to compensate for the small difference in weight to CG it properly.
Since this RTF model comes with the 4800mah, I take it you would like to also use the 5200mah from another Roban chopper?

Yes, I am concerned with the exra weight and CG issues. I also have the 4S 5200mah battery from the Roban Airwolf and other brands that I purchased.

[xviper]

I wouldn't worry about the extra bit of weight. I have flown my MD500 with the battery varied as much as an inch (fore/aft). With these stabilized (self centering), they are very forgiving about CG. Even in ATT mode, it flies very predictably. Only in "manual" mode does it require more "hands on", but then, in manual mode, it's all over the place for me anyway and requires a lot of stick input. Most of my Flywing helis use 5000mah bats, however, Flywing LiPos tend to be the smallest and lightest in any given size, certainly far smaller than any of my "usual" airplane LiPos. But I think the difference between a Roban 4800 and 5200 will be quite manageable in terms of placement in the heli.

[PilotTony]

I wouldn't worry about the extra bit of weight. I have flown my MD500 with the battery varied as much as an inch (fore/aft). With these stabilized (self centering), they are very forgiving about CG. Even in ATT mode, it flies very predictably. Only in "manual" mode does it require more "hands on", but then, in manual mode, it's all over the place for me anyway and requires a lot of stick input. Most of my Flywing helis use 5000mah bats, however, Flywing LiPos tend to be the smallest and lightest in any given size, certainly far smaller than any of my "usual" airplane LiPos. But I think the difference between a Roban 4800 and 5200 will be quite manageable in terms of placement in the heli.

Thanks for the reply. Ill give it a try.

[PilotTony]

Has anyone tried to revert the throttle stick to a conventional ratchet type throttle as opposed to sprung to the middle? Would make it easier to fly in ATT mode without always having to hold the throttle stick up. They supply the little metal bracket in the box already and there are you tube videos on how to do this. Doesn't look to hard to do. Im a novice heli pilot and looking to eventually working my way to full conventional heli controls.

Regards
Tony

[PilotTony]

Had a little incident with my Cobra that requires some repainting. Anyone know what matches the two gray colors?

TIA,
Tony

[Woohoo\o/]

I have three questions.

1- is this the same model as the Roban 470 cobra?

2- is it possible to fit a CNHL 5200 4s 90c pack? I ask because the included lipo looks a bit short. If not, what about an HRB 4500 100c 4s?

3 - I’m hearing some horror stories about switching to ATT mode during flight the helicopter just falls from the sky. Is this true?

[xviper]

I have three questions.

1- is this the same model as the Roban 470 cobra?

2- is it possible to fit a CNHL 5200 4s 90c pack? I ask because the included lipo looks a bit short. If not, what about an HRB 4500 100c 4s?

3 - I’m hearing some horror stories about switching to ATT mode during flight the helicopter just falls from the sky. Is this true?

Roban and Rotorscale (in this case) is one in the same.

Being a GPS stabilized heli, it should take a bigger battery without difficulty. It's not the space that is the concern. It's the CG that might be hard to achieve but the stabilization on this type of heli takes care of that and keeps the heli level.

The "falling from the sky" thing is a bit of an exaggeration. This is even mentioned in video of a different Roban Heli (MD500). When going from GPS mode to ATT mode, the heli does drop because the rotor pitch changes dramatically. It is up to the pilot to respond by increasing the throttle (pitch) stick. This is NOT uncommon for this type of helicopter. It can be programmed out if one knows how to do it. It's not as bad as the phrase suggests and it should be taken with a huge grain of salt. It is misleading and complete heli novices should refrain from this heli OR simply don't go into ATT mode until they become non-novices.

NOTE: Most FlyWing helis in this size (450 - 470 size) don't even have ATT mode out of the box, likely for this very reason. Owners have to change the setting in the TX to get ATT and owners are cautioned about the altitude drop, some of which is worse than others.

[Woohoo\o/]

Roban and Rotorscale (in this case) is one in the same.

Being a GPS stabilized heli, it should take a bigger battery without difficulty. It's not the space that is the concern. It's the CG that might be hard to achieve but the stabilization on this type of heli takes care of that and keeps the heli level.

The "falling from the sky" thing is a bit of an exaggeration. This is even mentioned in video of a different Roban Heli (MD500). When going from GPS mode to ATT mode, the heli does drop because the rotor pitch changes dramatically. It is up to the pilot to respond by increasing the throttle (pitch) stick. This is NOT uncommon for this type of helicopter. It can be programmed out if one knows how to do it. It's not as bad as the phrase suggests and it should be taken with a huge grain of salt. It is misleading and complete heli novices should refrain from this heli OR simply don't go into ATT mode until they become non-novices.

NOTE: Most FlyWing helis in this size (450 - 470 size) don't even have ATT mode out of the box, likely for this very reason. Owners have to change the setting in the TX to get ATT and owners are cautioned about the altitude drop, some of which is worse than others.

Thank you for the info. Cleared things up.

[PilotTony]

Not all ATT are the same.....

I own 3 of the 470 helis. Two have been purchased from MRC and the other right from Roban. The two from MRC "drop dramatically " when switched to ATT mode and you need to counter by upstick on whatever stick (mode 2 in the US) left stick.

The Roban heli doesn't NOT do this in ATT mode. It does maintain altitude and is more maneuverable. As Viper mentioned, you can program that features out. However the is no definitive video that shows how to adjust the values in English. Ive has seen some videos, but they are in Chinese. It would be very helpful if someone could produce such video to unlock the potential of these type of helis. ATT almost clained my Cobra as it got out of hand in hurry. I wasn't able to switch back to GPS mode and impacted terra firma very hard. Im happy to report that she's all repaired and ready for test flight today.

I purchased a spare fuselage with the intention of just transferring all the internals over. For me it was impossible since access to the GPS module which is located under where the exhaust is. Is not possible. Hope this helps.

Best regards,
Tony

[xviper]

I think one has to distinguish between "ATT mode" and "ANGLE mode". On all my FlyWing helis, I have changed to ATT mode from 3D Manual mode. In this mode, the heli will hold altitude but will drift in the wind. I have the Roban MD500, it has "ANGLE mode" and when flipped to this mode, the heli drops and needs operator compensation to prevent this from happening. It will not hold altitude and it will drift in the wind. (I don't have the Rotorscale version, so I can't say if it has ATT or Angle mode.)