Avant RC Helicopter Kits
We’re happy to announce that the Mostro 700 Nitro has been released.
This is the most advanced Nitro in the Market and it’s the only one that incorporates the latest design techniques into a Nitro model.
Nitro pilots no longer need to feel left out of the new wave of RC Helicopter design because they now have not just a new Nitro but the most advanced Nitro ever built available.
The Mostro 700 Nitro is the first Modern nitro in the market that has all the modern design features normally found only in advanced electrics like the Mostro 700 electric.
The Mostro Nitro is available with both DFC or FA (Follower Arms) heads. Both heads feature the famous RigidCore dampening system.
A dampening system that allows rigidity to work at all head speeds including very low ones.
Features always wanted by Nitro pilots and enjoyed by electric pilots are now available in the Mostro Nitro.
A beautiful and sexy design makes the Mostro an attractive model that will turn heads at the flying field.
Sexy!
This is truly a new approach that we are introducing in the market.
When designing the Mostro, we wanted to have all the mechanics connected rigidly, without flexible elements unless dampening is required. The result was the design of what we call the Mostro “Monoblock” ( single block).
In the Monoblock design, all elements of the system that affect the gyro sensing are mounted in a rigid superstructure. No part rests on the flexible frames unless it needs dampening.
The Monoblock is actually the flying helicopter.
Everything in the Mostro nitro is readily and easily accessible. Repairs are a breeze and easy access to the engine is unparalleled.
Boom supports are a thing of the past. The machines need to look nicer. The technology is available so why not use it? Yes the obvious answer is Carbon Fiber. The lightness and extreme rigidity of the boom made out of carbon can only be enhanced when a much larger diameter boom is used. Also why round? Because round is the ideal cross-section to handle torque.
It is not only the shape of the boom that is important, but also how it is supported. In the Mostro we have two far away spaced boom clamps that decrease the bending force applied to the boom.
We also made the area of physical contact between the clamp and the boom very large so that the clamp pressure is spread across a larger area, protecting the tube from damage due to excessive tightening.
We wanted to have the shortest possible distance between the swashplate and servos without resorting to weird geometries, that forces the electronic FBL unit to fight back geometry that is not best suited to mimic what the radio control system’s gimbal does.
No matter what system you are using, the radio’s gimbal is composed of two potentiometers that measure two angles. Those angles are the horizontal and the vertical movements of the stick by your finger.
The best way to match that is to have symmetry in those two directions. The most critical direction in manoeuvres is the side to side movement, which is naturally better driven via two “mirror-image” configuration servos, so that manoeuvres like fast aileron tic-tocs are performed mostly by the mechanics and less by the electronics trying to compensate for the mechanics weird geometry. This results in a lessened delay between the FBL gyro sensors detection of an unintended movement created by odd geometry, and also a lessening of the correction that it has to do to compensate.
Rugged clutch sized for today’s 120 sized engines. No slipping or breaking due to our exclusive no-fatigue shoe spring design.
Very high frame rigidity is achieved with lightweight carbon frame stiffeners elements.
Really large volume of air cooling system allows leaner engine settings delivering more power than other systems.
Get your Nitro today by clicking here.
The most advanced 700-sized helicopter in the market is available now. The Mostro 700 electric RC Helicopter by Avant RC.
Front-Left view
Right Side View
Front Right View
Left Side View
Front-Left View
Front Left Elevation View
Back Left View
Left Side Canopy View
Front Left Elevation Head View
Font Left Proifile View
Back Right View
Tail Blades Closeup
Tail Pushrod guide view
Boom Logo View
Tail Pushrod Guide view. Notice the adjustability to allow to adapt for either side of servo mounting.
Tail blade grip view. The Mostro uses tail blade grips with counterweights that lower the forces required by the tail servo to change the pitch.
This lower force makes the movements faster and the servo works significantly cooler.
Tail view
Tail fin and left side of tail case.
Top mechanics details
Back right view no canopy
Top mechanics closeup
Top mechanics closeup showing servo arm pin screws.
Motor mount slider plate.
Motor and ESC
Easy access sliding battery tray
Beefed up high strength belt drive.
Built Mechanics.
Swiveling Air Diverter Plate.
An Air Diverter Plate directs the airflow from the Naca Air inlets around the ESC an Motor for cooling efficiency and low drag.
The Mostro Monoblock. This is truly a new approach that we are introducing in the market.
In the design of the Mostro we wanted to have all the mechanics connected by rigid elements without flexible elements
being part of the system unless they needed dampening. The result was the design of what we call the Mostro “Monoblock” ( single block).
In the Monoblock design all elements of the system that affects the gyro sensing are mounted in a rigid superstructure.
No part of it rests on the flexible frames unless it needs dampening.
Receiver detail
Tail Servo Detail
Wide contact area boom clamp and Tail Servo.
There’s a second one about 6 inches forward for very high boom rigidity.
Yoke logos detail. (Both DFC and Follower arm heads use the RigidCore dampening system).
Here are a few pictures of interesting assemblies.
New Spring-Loaded locking bracket used in to lock the sliding battery plate in place.
View of the Spring-Loaded locking bracket used in to lock the sliding battery plate in place.
You can see it in motion in this video.
Very large capacity battery area for up to 8000mah packs.
Servo with the support pin screw installed.
The kit comes with both for M3 JR/Spektrum servos and Futaba M2.5 servos.
All other servo brands are included in those two standards.
Servos with their support posts.
Servos with their support posts detail and radio trays area.
A lower plate with spring-loaded tensioner pulley and fixed idler pulley assembled. They can be assembled for clockwise and counterclockwise main rotor rotations.
Gear and slider plate.
You can see how smooth the system runs in these videos:
Tail Servo frame mount (Default)
Another view of the Tail Servo frame mount
Landing gear is easily replaceable by removing two long screws.
As always our products are proudly made in the USA
From flying prototypes and testing experience we have found the combination of the Kontronik Pyro 750-50 and the 750-56 depending on what head speed you’re looking for and the Kontronik Kosmik Cool 160 or 200 to be the best power combo we have tried on the Mostro for 12 cell configurations. For applications where very high power is needed we have found that the Pyro 800-48 competition is a power monster. Other configurations and brands will also work great but these are the ones we have tons of experience on with fantastic results.
Click here to order your Mostro at CarbonXtreme.com
Pre-Orders for the Mostro 700 helicopters are open now.
No deposit and no charges until shipped and you can cancel anytime.
Click here to go place your pre-order at CarbonXtreme.com
There is a 3D monster inside you. Let it out; unleash the beast inside you with the ultimate refinement in the current trend of helicopter designs.
Avant releases the Mostro Line of Radio Control Helicopters
Aptly named the “Mostro”, the machine is the refining of the current trends in the helicopter world It is a double stage, direct-to-swash machine available with either a refined DFC head, that combines the superior technology used in the RigidCore head with a correctly designed Direct Flight Control (DFC) system or the follower arm version of the RigidCore head for the Mostro.
Two heads from the headmasters…
Some people say that FBL heads are all the same because the flybarless unit is the one doing all the work. But, people who owns a RigidCore head knows better than that. The RigidCore head is a refined design that has none of the bad tendencies that plague other FBL heads have such as: wobbles at low head speeds; low energy retention autos; dampening-generated vibrations, and other well known issues that people tend to dismiss as quirks. We at Avant are not happy unless the flying experience is one of true mastery of the mechanics and physics of the machine. This is why we took the time to refine a DFC head that would match our standards.
We wouldn’t be happy knowing that a potential fatigue issue such as the one that plagues many DFC designs would lead to a crash or alternatively, designers trying to minimize the fatigue problem that end up making the system loose enough to lose precision and crispness.
We combined the tried and true system used in the RigidCore head with polymer-based DFC follower arms that would create the perfect response yet remain durable and precise. We also added a small pinhole to the polymer that allows for the insertion of a small 1.5mm pin used to rotate the polymer bar, affecting the “turnbuckle” threads at the end. This makes the snapping in and out of ball links unnecessary, and allows for minute adjustments.
Unlike other designs, the DFC pivot point doesn’t rest on a screw, it rests on a milled shaft integral to the pitch arm eliminating the fatigue point of a screw interface.
Also, the design of the head yoke block is a piece of art. If you can make something awesome from the engineering and performance point of view why not also make it beautiful?
The Mostro version of our RigidCore head…
For those used to the excellent response of our original RigidCore head we have good news. We have made a Mostro low-profile version of the RigidCore head. The head has all the characteristics of the famous RigidCore arm follower head with the low profile used in the Mostro mechanics. Both the DFC and arm follower head are the same exact height so the style doesn’t change. You can chose the head you like for your Mostro helicopter from the beginning.
Servo layout because symmetry matters…
We wanted to have the shortest possible distance between the swashplate and servos without resorting to weird geometries, that forces the electronic FBL unit to fight back geometry that is not best suited to mimic what the radio control system’s gimbal does.
No matter what system you are using, the radio’s gimbal is composed of two potentiometers that measure two angles. Those angles are the horizontal and the vertical movements of the stick by your finger.
The best way to match that is to have symmetry in those two directions. The most critical direction in manoeuvres is the side to side movement, which is naturally better driven via two “mirror-image” configuration servos, so that manoeuvres like fast aileron tic-tocs are performed mostly by the mechanics and less by the electronics trying to compensate for the mechanics weird geometry. This results in a lessened delay between the FBL gyro sensors detection of an unintended movement created by odd geometry, and also a lessening of the correction that it has to do to compensate.
Servos need our support too…
Another thing we had seen was how fast the cyclic servos wear out because of the load on the servos that is carried exclusively by the force that the servo shaft applies to the servo case.
Servos are designed to handle torque via the gears, but not so well when forces are applied to the servo trying to bend the servo shaft. You can eliminate that by using push-pull servos driving bell cranks, like we used in the Aurora, but a push-pull system can’t be used in a direct-to-swash approach.
We thought about it and we decided to eliminate those forces by adding a support for the servo shaft by the addition of bearing-grade bronze bushings that receive a small stainless steel shaft we added to the servo screw. This eliminates the wear of the servos, saving a ton of money on servo replacements. The kit comes with the correct threads and lengths for the most popular brands of servos.
Bada-Boom! There go the boom supports…
Boom supports are a thing of the past. The machines need to look nicer. The technology is available so why not use it? Yes the obvious answer is Carbon Fiber. The lightness and extreme rigidity of the boom made out of carbon can only be enhanced when a much larger diameter boom is used. Also why round? Because round is the ideal cross-section to handle torque. If you want to try to test it yourself try applying torque to a toilet paper cardboard roll and you’ll see that the small flimsy material can handle quite a bit of torque. Now try that with a square or rectangular tube made out of the same material and you’ll see an order of magnitude of difference in torque handling.
It is not only the shape of the boom that is important, but also how it is supported. In the Mostro we have two far away spaced boom clamps that decrease the bending force applied to the boom.
We also made the area of physical contact between the clamp and the boom very large so that the clamp pressure is spread across a larger area, protecting the tube from damage due to excessive tightening.
Because you’ve got to stay cool…
Unlike the nitro Mostro, the electric Mostro canopy features two air inlets. Those are actually true NACA air inlets designed using the real aerodynamic engineering approach.
We wanted to have a way to let air in the canopy, without it looking like a patchwork of holes, and without it increasing drag. That problem was also an issue many years ago, and engineers at NACA (today’s NASA) came up with an air inlet design that allows for a high flow of air inside and minimizes the drag. We also wanted it to be functional, and again beautiful, so we added two very large NACA air inlets to the bottom of the canopy and added an air diverting plate to direct the air flow to the ESC and motor area.
Just to make sure it worked we put together a canopy with the diverting plate and tried it outside a moving vehicle. We were quite surprised at how much air goes into the canopy. Once we saw the little hurricane inside the canopy and how effective the NACA design was to draw air inside we knew it was going to be cool inside that canopy.
Size matters…
The generously sized main gear uses a much stronger tooth design and a special helical angle. Most helical angles available are not actually the best suitable angle for the application we have in radio control helicopters. Because of that we made a special angle and tooth an important part of the gear system. The large diameter gear implies lower forces per tooth applied, and the larger size of the tooth itself means much stronger strength at the base of the larger tooth.
A correctly designed helical gear gives you the quiet ride of the helical gear system with minimized undesirable axial force effect.
Extend the pleasure…
Most flyers in the hobby go to the field on a weekend and when they go to fly they spend the first couple of minutes of the flight calming down from the excitement, and when they’re just starting to enjoy the flight then all of a sudden they’re out of power or fuel.
Something as simple as battery capacity that would fit in the heli or tank fuel size can solve that problem.
The Mostro Nitro has a large 736cc tank for the fuel hungry 120 class of engines. This tank easily allows for very long flights and extends the pleasure part of the flight quite a bit. The same applies for the batteries. We designed the Mostro with the ability to carry up to 8000mah batteries. An interesting thing about large batteries is that because of the large number of milliamps a cheap 35C 8000mah battery can supply the same current as a 65C 4000 mah battery can, but you get to fly around 8-12 minutes instead.
Mono what?…
This is truly a new approach that we are introducing in the market.
When designing the Mostro, we wanted to have all the mechanics connected rigidly, without flexible elements unless dampening is required. The result was the design of what we call the Mostro “Monoblock” ( single block).
In the Monoblock design, all elements of the system that affect the gyro sensing are mounted in a rigid superstructure. No part rests on the flexible frames unless it needs dampening.
The Monoblock is actually the flying helicopter. Leaving practicality aside, you couldstrap some batteries to it without frames and fly the thing by itself!
Nitro vs Electric? How about both?
One of the best things about the Monoblock is that you could have one Monoblock and switch it between nitro and electric frames without much trouble. If you’re not sure what you like then have it your way and change it later if you want.
The nitro has a bearing block that uses the same bolt pattern as electric motors so that even the motor plate is used in the nitro. Swapping between them is pretty simple.
A dream of a tail…
A metal version of the amazing Aurora tail system is featured in the Mostro. The large travel allows for minute precise corrections without overshoot and it’s corresponding error correction by the gyro system. Smooth and crisp is the everyday response of a well designed system.
The price is right…
Pricing for the unit is US$899.99 The first batch of Mostro kits in the 700 size will start shipping in October. You can also pre-order it at CarbonXtreme.com now.
Most people don’t know this, but because we setup a mostly automated manufacturing facility our pricing of spares has been the same as Taiwanese manufacturers for about two years -almost to the cent, so you can now fly USA-made high quality product at Asian prices.
Pre-Orders for the Mostro 700 helicopters are open now.
No deposit and no charges until shipped and you can cancel anytime.
Click here to go place your pre-order at CarbonXtreme.com
This is a helicopter that was designed from the ground up as a pure native electric heli. With the design of the Aurora Ultimate Avant re-defined the design of advanced 3D RC helicopters and now with the electric Aurora Avant is redefining what a 90-sized electric helicopter should be. This is the dream machine that sets the pace of what an electric 90 should be. Designed from the ground up as a true native electric helicopter with input from many seasoned 90 size electric pilots that were looking for the ideal 90 sized electric machine. The flying characteristics are simply unparalleled. It flies light and nimble yet with the precision of a contest machine.
The use of two inexpensive 600-class battery packs allows users to reuse their current 600 size packs as well as access the growing number of low cost battery packs becoming available. One of the concepts used in the design was minimizing damage to the packs. With that in mind we designed the mounting of the packs by attaching them to solid sections of the frames whose edges would take the brunt of a collision minimizing damage to the packs.
This innovative staggered side-slot battery placement makes it very quick and easy battery exchanges and also balances the left/right weight load to keep the cg centered and the moment of inertia minimal. The elongated right side Battery slot allows you to slide the packs back and forth to adjust for precise CG location.
This helicopter is truly the best 90 electric in the market. Unlike other designs this helicopter was designed from the start as a truly purebred electric helicopter.
The model uses the tried-and-true and very successful Avant CCPM system and the amazing Avant FBL RigidCore Head and combined them with the rest of a design that takes the state of the art in high performance 3D electric helicopters to a new level.
Features:
The Absolute Best 3D machine ever is the Sexiest Too!!! The Avant Aurora is the helicopter that redefined the design of advanced 3D RC helicopters. After an extensive amount of testing and refinements as well as technological breakthroughs the final product is a combination of the strongest and most reliable airframe together with the sexiest looking style that will make you the envy of everyone at your field. The flying characteristics are simply unparalleled. It flies light and nimble yet with the precision of a contest machine.
Continue reading Avant Aurora Ultimate 90 Flybarless RC Helicopter Kit 2013 Model.
As one of the oldest Platinum Sponsors for IRCHA’s Jamboree AVANT RC is proud to announce the IRCHA 2012 Platinum Sponsor Grand Prize. The Prize consist of an Aurora FBL Nitro with the frames upgrade for 120 Engines. It features the S-120SR engine. It also features the RigidCore™ FBL head and the new yet to be released pro-level ProTek digital servos.
Avant RC.
The Absolute Best and Sexiest 3D machine ever is now Electric too!
This is a helicopter that was designed from the ground up as a pure native electric heli. With the design of the Aurora Ultimate Avant re-defined the design of advanced 3D RC helicopters and now with the electric Aurora Avant is redefining what a 90-sized electric helicopter should be. This is the dream machine that sets the pace of what an electric 90 should be. Designed from the ground up as a true native electric helicopter with input from many seasoned 90 size electric pilots that were looking for the ideal 90 sized electric machine. The flying characteristics are simply unparalleled. It flies light and nimble yet with the precision of a contest machine.
The use of two inexpensive 600-class battery packs allows users to reuse their current 600 size packs as well as access the growing number of low cost battery packs becoming available. One of the concepts used in the design was minimizing damage to the packs. With that in mind we designed the mounting of the packs by attaching them to solid sections of the frames whose edges would take the brunt of a collision minimizing damage to the packs.
This innovative staggered side-slot battery placement makes it very quick and easy battery exchanges and also balances the left/right weight load to keep the cg centered and the moment of inertia minimal. The elongated right side Battery slot allows you to slide the packs back and forth to adjust for precise CG location.
This helicopter is truly the best 90 electric in the market. Unlike other designs this helicopter was designed from the start as a truly purebred electric helicopter.
The model uses the tried-and-true and very successful Avant CCPM system and the amazing Avant Programmable Head and combined them with the rest of a design that takes the state of the art in high performance 3D electric helicopters to a new level.
Features:
• Battery Pack protection
One of the most important features of this design is the protection of the power packs which are arguably one of the most expensive parts risked in a crash. The main power packs are attached to a solid section of the carbon fiber frame both with self-sticking Velcro and by the straps. Since collisions are absorbed mostly by the solid section damage to the packs is minimized during crashes.
• Wiring is all inside the frames
All wires and cables fit inside the frames leaving no clutter outside.
• Generously sized locations for motor and speed controller
The locations for the motor and speed controller are large enough to accommodate current and larger sized motors and ESCs leaving plenty of space for oversized outrunners and large heat-sinks.
• Pinion support on top and bottom
Support on top and bottom distributes the load into two bearing blocks minimizing wear on the motor’s bearings.
• Motor and ESC exposed to open air for better cooling
Both motor and ESC are protected inside the frames and at the same time exposed to the flight’s air flow helping them stay cool during flight.
• Back Tail Servo location
Since electronics are not exposed to exhaust oil the tail servo is located in the back of the frames for direct tail control.
• Servos close to receiver
All Servos are easily accessible and at a short distance from the side=mounted receiver for easy access and service.
• The power packs are located higher
Unlike in most electric conversions where all the packs are located at the bottom the Electric Aurora features a design that places the battery packs at a higher location putting the CG point at a higher location making side-tic-tocs and rolling maneuvers effortless.
• Slim design and low front profile
A very slim design and low front profile give the Aurora a very low drag coefficient that allows it to keep the momentum in the most demanding maneuvers.
• Low parts count
An incredibly low parts count makes this an extremely easy to assemble, repair and maintain heli.
• Painted Canopy
High end professionally painted canopy included
SPECIFICATIONS
• Compatible blade sizes: 690mm, 700mm, 710mm & 720mm *
• Compatible Tail Blade size: 100mm-107mm *
• Suitable Motors 40mm and 50mm Dia. outrunners 450-500KV *
• Stock Gear Ratio: 9.9 optional 9.0 and 8.25
• Suitable Radio: 7CH Helicopter type heli radio *
• Fuselage Length:1426mm
• Fuselage width: 123mm
• Total Height: 465mm
• Main Rotor Diameter: 1595mm @avantrc.com 710mm main blades
• Tail rotor diameter: 280mm @avantrc.com 105mm Tail blades
• Main blade mounting: 14mm root, 5mm hole
* Main blades, tail blades, motor & radio are not included
Order yours today and be the envy of your field owning the most advanced and sexy electric heli in the market.
Avant RC.
