Jason Bell flying a Mostro at the 2014 San Diego FunFly

Factory Pilot Jason Bell flies a Mostro at the 2014 San Diego FunFly.

Mostro Spares Price List

Code Description  MAP 
AV950001 Avant Mostro 700 Electric Radio Control Kit with DFC head  $  949.00
AV950002 Avant Mostro 700 Electric Radio Control Kit with Follower Arms Head  $  949.00
AV960001 Avant Mostro 700 Nitro Radio Control Kit with DFC head  $  949.00
AV960002 Avant Mostro 700 Nitro Radio Control Kit with Follower Arms Head  $  949.00
SPARE PARTS
AV950080-Y Avant Mostro 700 Electric Painted Fiberglass Canopy Neon Yellow  $  100.00
AV950080-R Avant Mostro 700 Electric Painted Fiberglass Canopy Red  $  100.00
AV960080 Avant Mostro 700 Nitro Painted Fiberglass Canopy Red  $  100.00
AV950085-Y Avant Mostro 700 100% Carbon Tail Boom Neon Yellow  $    59.99
AV950085-R Avant Mostro 700 100% Carbon Tail Boom Red  $    59.99
AV950306-Y Avant Mostro Carbon Vertical Fin Neon Yellow  $    19.99
AV950306-R Avant Mostro Carbon Vertical Fin Red  $    19.99
AV950100 Avant Mostro 1mm x 10mm ID Shaft Spacer  $       4.99
AV950101 Avant Mostro 12mm Collar  $       9.99
AV950102 Avant Mostro Knurled Thumbscrew for Canopy  $       7.99
AV950103 Avant Mostro Canopy Support Post  $       8.99
AV950104 Avant Mostro Mounting Mini-Block  $       4.99
AV950105 Avant Mostro 56mm Rails Spacer (2)  $    11.99
AV950106 Avant Mostro 60mm Rails Spacer (2)  $    11.99
AV950107 Avant Mostro Frames Support Spacer  $    12.99
AV950108 Avant Mostro Swashplate Assembly  $    48.99
AV950109 Avant Mostro Main Shaft  $    21.99
AV950110 Avant Mostro 10mm Spindle  $    11.99
AV950111 Avant Mostro Intermediate Shaft  $       9.99
AV950112 Avant Mostro Top Servo Mounting Plate  $    55.99
AV950113 Avant Mostro Bottom Gear Mechanics Plate  $    59.99
AV950114 Avant Mostro Motor Mount Plate  $    24.99
AV950115 Avant Mostro Gear Mechanics Pillar (2)  $       9.99
AV950116 Avant Mostro Servo Side Post  $       5.99
AV950117 Avant Mostro Back Servo Bushing Post  $       6.99
AV950118 Avant Mostro CCPM Guide Post  $    11.99
AV950119 Avant Mostro Top Main Shaft Bearing Block  $    21.99
AV950120 Avant Mostro Main Gear Hub  $    25.99
AV950121 Avant Mostro Landing Gear  $    14.99
AV950122 Avant Mostro Boom Clamp  $    11.99
AV950123 Avant Mostro CNC Machined Pushrod Guide Bracket  $       9.99
AV950124 Avant Mostro Tail Servo Mount  $       7.99
AV950125 Avant Mostro Tail Fin Support Bracket  $       5.99
AV950126 Avant Mostro Tensioner Arm Torsion Spring  $       7.99
AV950128 Avant Mostro Locking Bracket Torsion Spring  $       7.99
AV950130 Avant Mostro DFC Yoke  $    44.99
AV950131 Avant Mostro DFC Pitch Arm (2)  $    25.99
AV950132 Avant Mostro DFC Pivot with Bearings and Setscrews (2)  $    23.99
AV950133 Avant Mostro DFC Delrin Links with Threaded Rods and Ball Links (2)  $    18.99
AV950134 Avant Mostro DFC Axle (1)  $       9.99
AV950140 Avant Mostro Main Blade Grip Set of two grips  $    69.99
AV950141 Avant Mostro CNC RigidCore™ Dampener set  $    14.99
AV950142 Avant Mostro Main Blade Grip M5 Bushings 8mm OD (2)  $    11.99
AV950150 Avant Mostro FA Yoke  $    44.99
AV950151 Avant Mostro FA Pitch Arm (2)  $    25.99
AV950153 Avant Mostro FA Turnbuckle Threaded Rods (2)  $    15.99
AV950160 Avant Servo Arm Screw with integrated pin M3 (JR) (Qty 3)  $    14.99
AV950161 Avant Servo Arm Screw with integrated pin M2.5 (FUT) (Qty 3)  $    14.99
AV950163 Avant 16mm M2.6 Threaded Rods (3)  $       5.99
AV950164 Avant Air Diverter Plate Bracket Spacer Post (2)  $       8.99
AV950165 Avant Locking Bracket Spacer Post (2)  $       8.99
AV950166 Avant 1mm Spacer for M3 Screws (2)  $       5.99
AV950180 Avant Bladeholder/Caddy for the Mostro 700  $    14.99
AV950181 Avant Hook and Loop 30mm wide buckle strap Standard length (2)  $       6.99
AV950182 Avant Hook and Loop 30mm wide buckle strap Long length (2)  $       7.99
AV950183 Avant Velcro Sticky Back Tape for Canopy  $       4.99
AV950201 Avant Mostro 20T Motor Pulley (6mm Shaft Kit default)  $    16.99
AV950202 Avant Mostro 21T Motor Pulley (6mm Shaft)  $    16.99
AV950203 Avant Mostro 22T Motor Pulley (6mm Shaft)  $    16.99
AV950204 Avant Mostro 23T Motor Pulley (6mm Shaft)  $    16.99
AV950205 Avant Mostro 20T Motor Pulley (8mm Shaft)  $    16.99
AV950206 Avant Mostro 21T Motor Pulley (8mm Shaft)  $    16.99
AV950207 Avant Mostro 22T Motor Pulley (8mm Shaft)  $    16.99
AV950208 Avant Mostro 23T Motor Pulley (8mm Shaft)  $    16.99
AV950209 Avant Mostro 25T Tail Pulley  $    24.99
AV950210 Avant Mostro 26T Tail Pulley (Kit default)  $    24.99
AV950215 Avant Mostro 37T Conical Tail Pulley with plate  $    27.99
AV950216 Avant Mostro 61T Double One-Way Clutch Pulley  $    45.99
AV950217 Avant Mostro 58T CNC Machined Helical Main Gear  $    34.99
AV950218 Avant Mostro 17T Helical pinion  $    16.99
AV950219 Avant Mostro Idler Pulley with Bearings (1)  $    11.99
AV950220 Avant Mostro Idler Tensioner Arm with Bearings (1)  $    11.99
AV950221 Avant Mostro Idler Arm Bearing Post  $       7.99
AV950222 Avant Electric Mostro 700 Motor Belt  $    22.99
AV950223 Avant Mostro 700 Tail Belt  $    34.99
AV950224 Avant Mostro Tail Case with Cap and Bearings  $    64.99
AV950225 Avant Mostro Metal Tail Blade Grip set of two with counter weight  $    27.99
AV950226 Avant Mostro Tail Slider assembly  $    32.99
AV950227 Avant Mostro Tail Pitch L-Lever with Bearings and Liner  $    17.99
AV950228 Avant Mostro Tail Collar for 6mm Shaft  $       6.99
AV950229 Avant Mostro Tail Idler Pulley Post  $       9.99
AV950230 Avant Mostro Tail L Lever Support Bracket  $    14.99
AV950300 Avant Mostro Electric Carbon Side Frame   $    49.99
AV950301 Avant Mostro Electric Carbon Battery Sliding Plate  $    22.99
AV950302 Avant Mostro Carbon Battery Rail Set for one frame  $    14.99
AV950303 Avant Mostro ESC Carbon Plate  $    11.99
AV950304 Avant Mostro CCPM guide Carbon Plate  $       6.99
AV950305 Avant Mostro Air Diverter Carbon Plate  $    11.99
AV950307 Avant Optional Electronics Mounting Side Plates  $    16.99
AV950308 Avant Optional bottom ESC mounting plate Kit  $    44.99
AV950309 Avant Carbon Servo Spacers (10)  $       9.99
AV950310 Avant Mostro Carbon Pushrod with threaded ends  $    14.99
AV950311 Avant Mostro Carbon Diverter Plate Bracket (2)  $    11.99
AV950312 Avant Mostro Carbon Battery Tray Locking Bracket  $    14.99
AV950313 Avant Mostro Knurled Thumbscrew for Air Diverter Plate  $       7.99
AV950314 Avant Optional Horizontal Electronics Mounting Plate  $    26.99
AV950500 Avant 12x24x6 Bearing (1)  $       4.99
AV950540 Avant Mostro Main Blade Grip Bearing Spacer 16×1.0mm  $       8.99
AV950541 Avant Tail Blade Grip Bearing Spacer 8×0.3mm  $       5.99
AV950550 Avant M4x24mm Socket Head Cap Shouldered Screw and M4 Locknut  $       4.99
AV950551 AV950551 Avant M4x18mm Socket Head Cap Shouldered Screw and M4 Locknut for 17T Pinion  $       4.99
AV950552 AV950552 Avant Mostro Main blade Grips M5 Screws and locknuts  $    11.99
AV950800 Avant Zero degree Alignment tool for Mostro 700 Bladegrips  $    14.99
AV950850 Avant Mounting and connection kit for Kontronik Kosmik ESC  $    28.99
AV960400 Avant Mostro Nitro Carbon Side Frame   $    49.99
AV960401 Avant Mostro Nitro Bottom Plate  $    11.99
AV960402 Avant Mostro Nitro Middle Stiffener Plate  $    11.99
AV960403 Avant Mostro Nitro Top Stiffener Plate  $    11.99
AV960404 Avant Mostro Nitro Battery Plate  $    22.95
AV960405 Avant Mostro Nitro Side Frame Stiffener Plate  $    11.99
AV960406 Avant Mostro Nitro Motor Bolts Plate (2)  $    11.99
AV960409 Avant Mostro Nitro Hollow Main Shaft  $    21.99
AV960410 Avant Mostro Nitro Clutch  $    27.99
AV960411 Avant Mostro Nitro Clutch Bell  $    22.99
AV960412 Avant Mostro Nitro Clutch Bell Liner  $       6.99
AV960413 Avant Mostro Nitro Clutch Stack Hollow Threaded Shaft  $       9.99
AV960414 Avant Mostro Nitro 24T Engine Pulley  $    16.99
AV960415 Avant Mostro Nitro 25T Engine Pulley  $    16.99
AV960416 Avant Mostro Nitro 26T Engine Pulley (Kit Default )  $    16.99
AV960417 Avant Mostro Nitro Clutch Stack Nut  $       8.99
AV960418 Avant Mostro Nitro Starter Shaft Bearing Block  $    15.99
AV960419 Avant Mostro Nitro Clutch Stack Sliding Plate  $    38.99
AV960420 Avant Mostro Nitro Aluminum Landing Skids   $    14.99
AV960421 Avant Mostro Nitro Aluminum Landing Skids   $    14.99
AV960430 Avant Mostro Fuel Tank Assembly  $    22.99
AV960431 Avant Mostro Nitro Fuel Tank Hardware  $    16.99
AV960432 Avant Mostro Fuel Tank Rubber Strip  $    12.99
AV960440 Avant Mostro Aluminum CNC Machined Fan  $    44.99
AV960441 Avant Mostro Nitro Motor Mounts  $    35.99
Mostro/Aurora common Parts
AV000110 Avant CCPM Anti-rotation guide Pin  $       5.99
AV000121 Avant Hex Starter Adapter   $    12.99
AV000123 Avant Steel balls M2 (5)  $       8.99
AV000124 Avant Steel balls M3 (5)  $       9.99
AV000126 Avant Standard Ball Link (10)  $       9.99
AV000127 Avant Ball Link Thick Thread (4)  $       4.99
AV000128 Avant Canopy grommets   $       5.99
AV000133 Avant Tail Y-link    $       4.99
AV000135 Avant Washout Y-Link  $       4.99
AV000136 Avant 6mm Starter Shaft  $       9.99
AV000138 Avant Black UV-rated Cable ties  $       4.99
AV000140 Avant Mostro and Aurora Follower Arms with bearings, Y-Links and pins  $    24.99
AV900214 Avant Aluminum Landing Skids   $    12.99
AV900229 Avant Tail Slider threaded Brass Sleeve  $       7.99
AV900242 Avant Tail Output Shaft  $    12.99
AV900245 Avant Tail Hub  $    14.99
AV910309 Avant Cooling Fan ( Kit Default )  $    12.99
AV910311 Avant Fan Shroud Set  $    17.99
AV910314 Avant Fan Hub Threaded 5/16-24 (OS)  $    19.99

Mostro Electric 700 shipping!!!

We’re happy to announce that the Mostro e700 is shipping worldwide. People all over the world are receiving their Mostro kits and posting pictures and videos on Facebook, YouTube and online forums and the response has been overwhelmingly positive. We are very happy that all our work paid off with the result in the best helicopter kit in the market by far. Hope you enjoy your new Mostro helicopter as much as we do ourselves.

Regards,

Avant RC.

Release of the Mostro kits

Release of the Mostro kits

We’re happy to announce that the Mostro is being released. Production kits are being sent to the rep pilots and we’re getting ready for shipments to customers. Customer shipments could start this week or next week at the latest. We thought we would start shipping today March 31st. but we decided to incorporate a last-minute suggestion from a building session last Saturday to make it easier to do some setups. We’re making that addition right now so that the kits are shipped with them.

As some of you know we spent this last weekend in Las Vegas with our Factory Pilot Jason Bell doing the final testing of the production kit. We built a final production kit on Friday and Saturday and flew it on Sunday. Unfortunately as many of you know since you were this last weekend at the Vegas funfly you saw Sunday’s weather at the Vegas FunFly with winds that were a constant 30-40 mph throughout the day so it was tasking for our pilot but he put the Mostro through some very grueling final tests. We did video record part  of those flights and we have some from previous test sessions so we will be putting them together and posting a video in a couple of days. We also taped a video of the DFC head heli flying at an incredible low 900 rpm even in that wind to demonstrate how the RigidCore dampening system works at any speed regardless of the head type.

 

Now about the Mostro V2

That’s what we jokingly call it at the factory. We internally call it the V2 Mostro because there have been so many improvements done on the last few months to what people have seen so far that they would easily qualify it as a V2 version of the Mostro. Some of them were already posted like the dual one-way system, the new swashplate and other ones but there are many more.

We need to first thank our fellow heli pilots for your all the feedback we have received because without it we wouldn’t know what customers want or have concerns about so that we can make design changes and improve the design. Here are the changes that are coming out on the release kits:

1) New OPtional additional location to place the ESC.

Some customers told us that they felt better if they had a location to place the ESC outside in the open so we decided to design one and make it a part of the kit. As you can see in the following pictures there is a new ESC plate that allows you to place the ESC under the batteries. This location is also adjustable in height to let you adjust the plate and put it close to your battery packs. Some customers felt very strongly about having that ability so we made it an optional part. We did test it in flight too so we know it works great too.

Top and bottom ESC plates displayed

An actual unit with a large ESC installed.
Notice how the height is adjustable so that you can place it close to your battery packs.

2) New air diverter plate attached to the frames.

In the initial design the air diverter plate was attached to the canopy. Some customer were concerned that the installation of the plate would be difficult and asked if there was a way to attach it to the heli. The answer is yes and it’s now part of the kit. The problem was that we had to have a way to get the batteries in and out so we went ahead and made it into a swiveling diverting plate that at the same time raises the locking bracket for easy insertion of the battery plate. It also serves as an insurance policy so that the battery place won’t slide out even if you forgot to lock it in place.

There is a thumbscrew that keep the whole system locked in place.

View of the new Air Diverter Plate mechanism.

You can see it in motion in this video.

3) New additional location for receiver battery.

Some customers asked us to give them an option for placing a receiver battery in the front too so we made slots for the straps in the new frame-attached diverter plate to allow for a front-mounted battery.

4) Super-Strong Stainless Steel DFC axle.

Also from feedback from customers that had some concerns we now have the DFC axle made out of a strong Stainless steel that’s attached to the pitch arms via a large threaded end of the axle.

5) New side plate on conical pulley.

Again from customer feedback we added a side plate to the conical tail-driving pulley for cases when people don’t tension the tail belt correctly. This will give those customers some peace of mind.

6) Even lighter now.

Even with the heli already being light we decided to revise all the parts to make sure the weight savings were maximized. We were surprised at how much weight we were still able to take off the heli. At the same time we improved on the plates and several part’s geometries. We also refined the styling of some parts like the pitch arms and some other parts.

Improved Geometry and Lighter Top Servo Plate

Improved Geometry and Lighter Top Bottom Gears Plate

Lighter Main Gear Hub and Main Gear

Improved geometry and lighter top Main Shaft bearing block

More refined styling in the pitch arms on both the Follower arms and DFC heads.

7) New Optional electronics mounting plates.

Also from customer’s feedback we made some optional electronics mounting plates that allow for busier electronics for people that want to add telemetry hardware and such. Since these are not needed for all applications they’re available as an option.

We are very happy that we have arrived at this point and are releasing the kits.

We do warn you that the Mostro is a very an addictive helicopter so you better get ready for a ton of fun.

If you haven’t yet go ahead and order yours by clicking on this link.

Regards,

Avant RC.

 

Update #4 on Mostro Kits

Update on the release of the Mostro kits.

As posted elsewhere we have been waiting for a few parts we shipped out to third party vendors  that needed processing to be completed. We received most of them back and there’s only a few left that we’re waiting for because of delays who our suppliers blamed mostly due on the holidays.

In the meantime we kept testing the units and we found that after the last change of adding the double one-way bearing  we created a situation in a part that had previously had perfect performance but due to the new design wear showed up and had to be recently corrected.

As you can seen in the pictures below  the new parts we announced for the double one-way included what we call a conical pulley because it’s shaped as a cone.

This conical pulley is the one that drives the tail pulley. In the part we announced we kept the original bolt pattern using one through bolt and nut.  The initial testing showed excellent performance but recently we noticed that play had developed in the shaft contact area because the original single bolt and nut design doesn’t offer support for a new torsional strain created by the new conical shape.

We discovered that when the bolt was parallel to the boom and when the tail blade rotor is under load the force from the tail blades under load would not move the conical pulley but when the bolt was perpendicular to the boom line then the conical pulley would not have a locking fastener preventing the rotation of the top of the conical pulley towards the tail. This very minute rotation with enough flights generated a very small play by slightly deforming the shape of the pulley shaft contact area into a slightly oval shape. Even though it’s not something that can be seen in plain sight when you measure the diameter across and perpendicular to the bolt with precise instruments there are very slight differences of diameter of a couple of thousands of an inch that indicate the in time it could become a problem.  Even though for a customer the problem would take hundreds of flights to appear we decided we can’t sell a product with a known wear issue so we corrected the problem by using four screws that offer support and prevent play at any point of the rotation of the conical pulley. The new conical pulley and new shaft  have been in production for a few days. We decided that in order to make the kits available faster we will not wait to have them all ready but instead we will start shipping kits as soon as  those two new parts are being finished once we receive back the remaining parts being processed by third parties. The kits will be shipped in the strict order in which they were ordered.

If you were smart enough to pre-order your kits you will be receiving kits soon. Same with Dealers that placed orders ahead their customers will receive kits sooner than dealers or customers who placed orders later but then again a strict first-come first-served policy will be used.

Keep in mind that we don’t know the exact date that we will start shipping kits but based on the current information we’re expecting that around the beginning of February there should be a good number of kits shipped as we normalize production and will continue to ship as a regular product. 

New conical pulley with four screws prevent the play in all positions and eliminates the wear.
New four-screw intermediate shaft for the new conical pulley.
Hope you had some happy holidays and we wish you a happy and prosperous New Year.
Regards,
Avant RC.

Mostro 700 Electric Kit

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).

Click here to go place your order at CarbonXtreme.com


Assembly pictures

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

Recommended Motor and ESC:

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.

Notice:


Click here to order your Mostro at CarbonXtreme.com

Update on Release 3

We hit a snag during production that is delaying us. As posted in a previous update we were planing to have the release a few days from now but one of the CNC machines used in the manufacturing has a problem with the Automated Tool Changer (ATC) that keeps stopping the production of that machine. We’re working with the machine manufacturer to resolve the problem. They asked us not to use the machine until they come and fix it. This could potentially delay the release to the end of the month so we will have to play it by ear. We would rather say end of the month instead of what could potentially be sooner than that because that way if the problem resolves quickly we get to release sooner but if it doesn’t then we release at the end of the month.

 

Sorry for the inconvenience that this can cause to your plans to have your helicopters sooner but we’re working hard to get them out asap. We’ll keep you updated.

 

Avant RC.

New Boxing of kits

We changed our approach to boxing and we now have a single box for the larger helis like 700 and the 600 lines as well as smaller boxes for the smaller helis like the 500 line that’s being developed. This approach allows us to tailor the kits to the ones that’re being manufactured.

We are now packing the helicopters in a main box that contains 4 boxes inside as well as space for the booms.

 

There are four boxes. A large one contains the Canopy, a smaller flat one one contains the frames and some of the bags, another flat one one contains more bags and a small one contains things like tanks, fan shrouds and other taller parts that won’t fit in the larger flatter boxes.

 

 

 

 

Update on release 2

Testing the prototypes we found a prematurely worn-out bearing in a swashplate.
Investigating the cause we were able to determine that the method used to install the inner swashplate ring that we have been using without any problem in the Aurora creates a premature wear in the bearings used in the Mostro.

The Aurora swashplate uses a single thick-walled bearing in the swashplate and the inner ring is installed by “flaring” the bottom of the inner ring to secure the bearing in place. Going to a 12mm diameter main shaft the inner diameter of the swashplate’s bearing needs to be bigger leaving less space between inner and outer bearing.

In the case of the Mostro and many other helicopters today we opted to use two smaller cross-section bearings instead of one. This has the nice effect of allowing the torque that the servos apply to the swashplate to be distributed between two separated rows of ball bearings instead of one.

The problem arises because the bearing being a smaller cross section have thinner walls so they don’t like the deforming forces that a flaring tool does on them when installing the inner swashplate ring.

The solution was to develop a split threaded inner ring that allows for the installation of snug fit bearings without creating any pre-loading on them by a flaring tool. At the same time we developed a different outer ring that also has no need for press-fitting and has a locking screw that holds the bearings in place.

We started the process of manufacturing and replacing all the swashplates in all the kits so that the release version has a swashplate that has no early wear tendency. So far we don’t see this affecting the workflow so we might be able to still have them out within the time frame but in the worst case it could delay the release by maybe five more days in case we nee to catch up with the swashplate replacement. We know it’s annoying to hear about the possibility that it could be delayed but we rather spend extra time and money on the replacement parts and ship a kit to the consumer that will have this premature wear issue already resolved before it hits the streets.

Above is a picture of the inner swashplate ring used in the Mostro until last week.


This is how the previous version was installed. The ends of the cup is flared with a flaring tool to bend the edge outward securing the bearings in place.

 

This is the new design. Notice how the ends are machined, beefier than a flare and the ring is split in two and threaded allowing for the installation of the bearings with no pre-load.

 

Here are some pictures of the new threaded parts:

 

 

 

Regards,

 

Avant RC.