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Chris ReibertVeteran - Rochester, NY - My Posts: All  Forum  Topic

Mikado Logo 700 Review

Logo 700 Specs:
FBL System: VBar NEO
Motor: Scorpion HK4525-520 Ultimate
Pinion: 13T
Headspeeds: 1700, 1800, 1900
ESC: Castle Talon HV120
Cyclic Servos: MKS HBL599 X6
Tail Servo: MKS HBL880 X8
Battery: (2) Pulse 4100mAh 45C lipo
Mains: VTX 717mm
Tails: Switch 105mm

Mikado Logo 480, 500, 550, 600, 690 and now the 700 are just to name a few of the Mikado models I have owned. I can honestly say Mikado has not let me down yet with their classic plastic polymer helicopter models. Paired with a set of VTX 717mm blades the 700 has super light disk loading for huge big air 3D and sport flying. The new Logo 700 is a Beast of a machine when built with a Scorpion 4525-520 Ultimate motor. It is a completely redesigned “light” 700 we the pilots have been hoping Mikado would design for the past few years. Not only do you have some of the world’s top pilots backing the products, you get excellent customer support from Mikado USA. With the big Mikado Logo box on my table and the kids in bed it was time to get the box open. The paint and clear coat finish on the canopy is excellent and the choice of brightly colored orange and yellow paint shows up amazing under any light conditions. The manual is a largely printed color manual and consists of 3D graphics and illustrations for each step showing you where every part goes. With all the parts laid out on a separate table it was time to dive into the Logo 700 build.

THE BUILD

The build starts off with assembling the chassis first. This Logo is unlike their past models with two chassis frame halves whereas the new 700 uses four. Yes I said four. There are two upper and two lower frame halves. The new four part chassis is made from fiber reinforced molded plastic which is lighter and more rigid than a traditional carbon fiber aluminum chassis. You first start by installing the elevator servo, tail servo, frame blocks, torque tube umbrella gear mount and tail boom holder onto the upper right frame side. The upper halves take up the entire electronics including motor, servos and FBL system. Servos are mounted directly into the chassis, with optimal position and angle in relation to the swash plate. With those parts and components installed into the frame the two halves can be joined together using the M2 bolts and locknuts.

Inserted into the upper frame is the other drive gear that goes around the drive belt and connects to the rear umbrella torque tube drive gear. The lower frames halves also bolt together and contain the dual locking battery tray system and the landing gear skid assembly. The 700 incorporates a locking slide out battery tray system as seen on the other Logo SX V2 models. With both upper and lower frame assemblies built I joined the two pieces together. This unique design allows you to just replace the lower frame assembly in a crash where you break either of the two lower frame halves. The only electronic component installed onto the lower frame assembly is the ESC, making frame lower replacements a breeze. Cable guides inside the chassis allow for a neat and protected wire layout to the ESC at the front within the chassis.

The remaining cyclic servos install onto the front of the upper frame and are held in with allen head screws. I suggest taping the servos wires down the back of the servo for a cleaner fit into the rear of the helicopter and to clear the elevator servo arm. Mikado not only supplies the servo balls but include the Mikado servo arms with preset holes to give the model the most ideal servo geometry. I used all the electronics out of my Logo 690SX V2 minus the motor so the servos used were the MKS HBL599 X6 high voltage servos on cyclic and a MKS HBL880 X8 for tail control. I always plug in my servos and center the servo arms before I install the servos onto the frame making setup quicker later. You will want to lightly sand any edges of the frame where electrical wires may pass through or over.

After you assemble the main auto-rotation hub gear and drive gear it will install into the frame under the drive belt and onto the main shaft with an additional lower frame bearing block. The motor mount is pretty impressive and is made up of an upper motor mount plate, standoff spacers and a lower bearing block. You will need o order your motor with the longer motor shaft to reach the lower bearing block. I made this mistake and set my build back a week. Make sure everything has sufficient loctite and research the pinion choice you will need to buy. I purchased a 13T pinion to use with the Scorpion HK4525-520KV Ultimate motor to achieve my preferred target headspeed. Currently Mikado only sells a 13T and 14T pinion option for the Logo 700. I also shortened my motor leads so that they could plug directly into my ESC for an extremely clean and efficient installation. The motor bolts into the frame with metal bolt guides and five M3 bolts on each side. With the herringbone gear design you will want NO gear backlash with the pinion lined up perfectly with the center of the herringbone gear. You don’t want it so tight to stress the motor but if it’s too loose it could slip and strip the main gear out.

The tail case assembly is a similar design to that on the original Logo models and is made up of two plastic molded case halves and a brightly painted vertical carbon fiber fin. The tail case is held together with nut and bolts sandwiching the rear torque tube umbrellas gears inside of them. It is a great idea to apply Dry Fluids gear lube before closing up the tail case assembly. Because it is fully encapsulated the gears are protected against dust and dirt. The molded tail grips and hub assembly are a very simplistic design and the tolerances were perfect with zero slop or play. If assembled correctly per the manual everything should spin and slide smooth as silk with no resistance. The kit comes with 105mm RotorTech tail blades but I switched them out for 105mm Switch tail blades. The torque tube assembly is unique like none I have seen before. There are four sets of bearings that have the rubber o-ring around them. They are spaced out per the manual and are held in place by a piece of heat shrink tubing on each side. The torque tube is finished off with the metal ends held onto the shaft with M3 nut and bolts. After applying a little bit of oil the torque tube assembly slid right down the boom.

The boom slides into the frame with a keyed slot in the boom to ensure a perfect fit and is pinned in place with a small M3 screw. The tail assembly slides onto the rear of the tail boom which is also keyed. Before you tighten the front and rear of the tail boom make sure the torque tube spins freely and nothing is tight or binding. To finish off the tail boom assembly I installed the tail servo pushrod, horizontal fin and tail boom brace supports. You need to glue on the ball link style boom support ends onto the thick carbon fiber supports. I recommend using 5 minute epoxy to ensure your supports never come loose in flight. To assemble the tail pushrod my personal fail safe method is to glue the ends on the pushrod with 5 minute epoxy before applying a small amount of CA and wrapping both the pushrod ends and carbon rod with thin black thread. Once dry, I coat both sides in five minute epoxy and let everything fully harden.

Moving onto the swashplate and main head assembly I applied loctite to all of the swash balls onto the swashplate and slid it onto the main shaft. This is the step where you will also assemble each linkage servo linkage and snap them onto the cyclic servos and swashplate. The Logo 700’s full aluminum rotor head is a completely redesigned to be lighter, but at the same time give you the great flight control characteristics as seen with the bigger Logo Xxtreme. The head is designed for rotor blade sizes ranging from 690-717mm depending on your style of flying. I chose to run the VTX 717mm combo to accent my big air 3D flying style. The Logo model helicopters have head buttons which is a nice feature to not only lift up the helicopter but you can also put your palm onto it to slow the spinning blades when the model is spooling down. With the head assembled finished I popped it onto the mainshaft and bolted everything down.

I mounted the Castle Talon HV120 onto the front top of the frame in front of the motor with my ESC signal wires routed along the top of the frame back to the NEO. I mounted the NEO flybarless unit with the wires facing forward on the upper rear deck and mounted a Scorpion Backup guard on the rear side of the upper left rear frame. Setup with the Mikado Vbar Control radio and NEO flybarless system was extremely fast and EASY. When you are setting up a Mikado helicopter model in the NEO wizard it automatically puts the name of the model and all presets in the NEO for you leaving just a few quick setups steps to get you into the air. The canopy mounts onto the frame with the bottom notches sliding between the skids, the rear sides of the canopy pushed onto the canopy posts and the rear securing clicking in place with earth magnets. Mikado includes clear canopy edge protector which I mounted on the top of the canopy. The batteries mount onto the battery tray with the supplied Velcro and Mikado battery straps.

IN THE AIR

The initial test hover flight in my backyard went perfect and the 700 just needed a few turns on the main blade grip links to achieve perfect blade tracking. I was very pleased to see the Logo 700 still had the hands free hover stability of all my other past and present Logo models. Sound wise it is a bit louder than my Logo 690SX mainly due to the torque tube versus all belted design like the other Logos I’ve owned. It’s not a deal breaker but you have to get used to the sound, especially if you are coming from an all belted helicopter before this model. With the back yard tail and head test hover complete I headed out to the field the following day with a set of fresh packs eager to get my new 700 machine into the air. My typical unboxing-to-flight process only takes me a few days but with work, family and winter I’ve been looking at the Logo 700 on my build table for over a month.

With the model fired up I brought it into a hover, did a quick forward circuit and then went right into tic tocs and a 3D routine. The 700 responded superbly with crisp pirouettes, loops, rolls, tic tocs, funnels, hurricanes, backward rolls and other demanding maneuvers. Heck I even through in some piro-flips and an auto rotation landing at the end of the flight. I tested with both Pulse 4100mAh and 5000mAh 45C packs. The disk loading felt much lighter with the 4100 packs swinging the VTX 717 rotor blades. Cyclic response was incredible thanks to the powerful MKS HV servos. Tail response was awesome as well and held perfect in even the hardest piro maneuvers flying the entire flight at bank 2 1800 rpm.

For sport flying the Logo 700 flies really well at 1700 rpm with no bobbles and can extend your flight times by minutes. I tend to fly in Bank 2 at 1800 rpm which is the perfect compromise to be able to fly big air 3D and still get five or more minutes of flight time. If I want to really show off the 700’s abilities, I can crank her up to 1900 in Bank 3 for extreme fast forward flight and hard smack style 3D. I don’t think it is necessary to go above 1900 rpm when swinging 717mm blades. The manual recommends -/+12 degrees of pitch but I fly all my models at -/+13 pitch. If you really want to have a long flight and some fun throw in a 6s jumper and fly your 700 at 850-950rpm for some smooth blade twapping low headspeed flying. It is a sure way to impress people at the field and work on your collective management at the same time.

Flight mode​ Throttle ​RPM
Bank 1​​ Governed ​1700
Bank 2 ​Governed ​1800
Bank 3 ​Governed ​1900

THE LAST WORD

I can confidently say the Logo 700 has now become a new favorite of mine alongside my trusty Logo 690SX. To say that I'm pleased with this helicopter would be a huge understatement and unfortunately my Logo 690SX might not see much airtime anymore. Other than the initial torque tube flight sounds the Logo 700 has been an amazing flying machine. I can see where having the torque tube system makes the tail boom assembly easily dismountable for traveling and storage. The kit was well packaged, the manual was easy to follow and the assembly followed suit to my other Logo builds. For a large model it remains maneuverable even at lower headspeeds, yet is able to handle the hardest smack 3D you can throw at it. The Logo 700 is a truly remarkable helicopter that you can be happy to invest your money into. If you are a beginner, sport 3D or hard 3D smack pilot, I highly recommend giving the Mikado Logo 700 a try.

For more pictures and video you can see them on my helicopter Facebook page "3D and Scale R/C Helicopters".

Fly Safe
-Chris

Unboxing Video

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Build Video

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Maiden Flight

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Low Headspeed 6s Flight

Watch at YouTube

I only FLY on days that end in "Y"

01-27-2017 11:20 PM
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