Factory Pilot Jason Bell flies a Mostro at the 2014 San Diego FunFly.
|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|
|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|
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.
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.
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.
The most advanced 700-sized helicopter in the market is available now. The Mostro 700 electric RC Helicopter by Avant RC.
Right Side View
Front Right View
Left Side 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 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.
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.
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
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.
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.
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.
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: