Blade 330S RC Helicopter
Back To The Basics - Again

by John Salt - July 2025

Yep, I'm still fan of the Blade 330S

It's a cost effective, not overly powerful 3S powered, 450 size, ready to fly RC helicopter. Perfect for Spektrum Radio users who are getting into collective pitch helicopters, but don't want to waste time or money on micros. 

As I state on my Best RC Helicopter Page, there was for a short period of time, a big hole in the entry level RTF market for this type and size of helicopter. With the Blade 330S RTF and the Align T-Rex 450LP ARTF (links to my page on it), we have two great options once again! Which to choose?

As both these reviews and best RC helicopter page indicate, I still maintain that for many individuals, 450 size helis make the ideal first collective pitch helicopter when not over powered and correctly setup as a trainer.

They still have more than enough performance & power to get into aerobatics as your collective pitch piloting skills grow. Or even to get into scale RC helicopters with the many 450 size fuselages currently on the market if scale flying is your long term goal & passion.

The Blade 330S, just like the T-Rex 450LP, both excel at this wide spanning growth potential & varied flying styles while keeping costs at bay for the collective pitch newbie.

450 size RC helicopters are large enough to see at distance and have decent flight times, yet are not too intimidating. They can handle wind better than micro's and the components generally last longer, plus they are easier to work on. They also generally give you the most rotor size to dollar ratio of all heli sizes.

Blade 330S Flying InvertedRight Side Up Or Inverted, The Blade 330S Looks Fantastic In The Air!

I get comments from way more people stating that "after flying a larger heli, they will never fly a micro again", than I do stating after flying a micro, they will never fly a large heli again.

In fact, I have never once got that comment unless they were forced into small stuff due to ridiculous and nonsensical RC flying restrictions, but that's another topic. 

To see Blade still recognizing this and staying true to their roots with a great "nuts & bolts" 450 size, easy & economical to live with 3S powered helicopter, should give all beginners new the hobby reason to smile whether the 330S ticks their particular boxes or not.

It should also give all current Blade 450 3D & 450X & 330X owners reason to smile as well since almost all parts are shared so ongoing parts availability & support will continue to be no problem. 

In fact, other than a T-Rex 450 clone based on the Align Trex 450 Pro, I don't think there is a single 400 size helicopter on the market that still has the over decade long parts support that Blade has with their 400/450 platform. 

While some in our disposable, false economy society may see that as a negative and state nonsense like Blade is not innovating (meaning profits are not being maximized), I see it as hopeful optimism for our future.

I despise this constant RC helicopter upgrade game we are all being forced to play and keep our wallets empty. While Blade certainly is also playing, it's refreshing to see a few of their iconic helicopters remain and follow the full size aircraft evolution method over re-inventing a new product every year to maximize profit and no longer offer parts support shortly after for its predecessor. 


Blade 330S Design Features & Components

I guess the first item to address here is the size. I keep calling the 330S a 450 size helicopter, but what do these numbers mean? I go over all RC helicopter sizes on my heli size page, but the usual way 450 helis were sized was to go by an arbitrary motor class size, in this case 400/450 class motors.

Recently, and thankfully, manufacturers are starting to get away from motor class sizing and go by blade length sizing (like on larger size RC helis 550 and up), by using main rotor blade length. 400 & 450 size helicopters use main rotor blades that are 315mm to 330mm in length, and thus the 330 size nomenclature. The Blade 330S comes with 325mm long carbon fiber main rotor blades, but they round the heli size up to 330.

I still call this size of heli a 400/450, but I should get used to going by blade size as it will no doubt become the preferred method of sizing from micro size up to 800's and larger I predict.  

Blade 330S MechanicsBlade 330S Mechanics Are Largely Shared With The The Previous 330X, 450X, 450-3D, even the original Blade 400!

As seen above, the Blade 330S mechanics are identical to the previous 330X from the lightweight & durable two piece plastic frame, to the elevator bell crank servo layout, and power train including main and auto gears, along with belt driven tail drive components front & rear.

Blade 330S Tail Rotor Blade 330S Belt Driven, Variable Pitch Tail Assembly

In fact, when looking at the parts list of the Blade 330S, almost all parts are shared with the 330X, many with the 450X / 3D, and even a few with the iconic original Blade 400. There are also a good number of aftermarket parts for this popular architecture so even if/when Blade pulls the plug, parts support for all these models will continue for years to come. 

Blade 330S Rotor Head330S Rotor Head & Swashplate

Blade uses the same rotor head and swashplate on the 330S as they did on the 330X and 450X. The swash is fiber reinforced plastic on the bottom non-rotating half and aluminum on the upper rotating half. A rear mounted anti-rotation swashplate pin and bracket are used.

Traditional washout arms are used over DFC (thankfully) to correctly phase and rotate the swash with the head along with standard threaded adjustable pushrods up to each blade grip for collective and cyclic pitch control.

Blade grips are fiber reinforced plastic to save cost and weight but are mounted to an aluminum head block. A standard head headaxle / feathering shaft is used with adjustable o-ring dampening.

Blade 330S Uses E-flite's 440H 4200Kv MotorBlade 330S Uses E-flite's 440H 4200Kv Motor

The E-flite 440H 4200Kv motor used in the 450X and 330X, is powering the 330S. 

The big plus with this 4200Kv motor is not the motor itself, it's that this 450 size heli (like most 450's size heli's of yesteryear) runs (and runs well I should add) on very common and economical 3S 2200 mAh LiPo battery packs, over high voltage 450's running on costly 6S packs in combination with 1800-2000Kv rated motors.

Basically, 3S LiPo costs are about half of 6S, not to mention, 3S 2200 mAh packs are such a popular size. Chances are if you already fly RC planes or quad-rotors, you likely already have LiPo's of this voltage and capacity saving you even more money.

I would recommend nothing less than 30C discharge rated packs on any 3S powered 450. Go up to 35C or higher when you start doing higher power demand aerobatic or 3D flying.

Spektrum H3055 Cyclic ServoBlade 330S Spektrum H3055 Cyclic Servo

The Blade 330 S uses 3 quality sub-micro digital metal geared Spektrum H3055 servos for cyclic, and a sub-micro digital metal geared Spektrum H3065 high speed tail servo for the tail rotor.

I have servo speed & torque specs at the bottom of the page under the specifications heading.

Nice to see higher quality metal geared servos being used on the 330S just like on the previous 330X version.

Servo failures (stripped out plastic gear sets) were the number one complaint on the original Blade 400 and going with a metal geared servo certainly helps with this issue.

That said, metal geared servos strip out too as I talk about in more detail and why it happens on my servo page. The one nice design feature all of Blade's 400 & 450's and 330's share that helps minimize servo gear stripping is the elevator bell crank layout. The elevator servo tends to be the most likely one to strip, and by going with a bell crank design over a direct servo pushrod linkage, you get some additional "mechanical fuse" protection within the linkages themselves. 

Spektrum H3050 Servo Replacement Gear Set

No worries however if/when you do strip out a gear set.

Spektrum is a well established brand and offers replacement gear sets for both the H3055 and H3065.

Blade 330S Flipping Forward330S's Spektrum Digital MG Servos Up To The Task With A Full Forward Pitch Command

With the 450 & 330X design & component similarities out of the way, now lets look at the few Blade 330S differences.

Blade 330S Avian 30A ESCThe Blade 330S Comes With The Spektrum Avian SMART 30A ESC

First up and no surprise is the Spektrum Avian SPMXAE1030 30 Amp ESC. 

I say "no surprise" because most ready to fly models Blade and Horizon have been releasing over the past few years are using their proprietary SMART communicating systems; the Blade 330S's ESC pairing is no exception. 

I know, many love this SMART communicating stuff, but I'm not one of them for the simple reason I don't like proprietary anything! 

This is right from their Avian promotion page: "simplicity with the ability to communicate with other Smart electronics".

That to me is a deal breaker. What simplicity means is no understanding needed at the expense of customization. What Smart electronics means is you are forced into using Spektrum equipment (radio, FBL system, even the LiPo battery packs); at least if you want to take advantage of the full communicating SMART system you are paying a premium for.

Personally, I want options, but others could care less. Worthless subjective proprietary rant over with - let's continue.

Blade 330S CanopyBright & Easy To See Blade 330S Canopy

The next change is hard to miss on the 330 S - the canopy! 

Blade uses a quality fiberglass canopy with a super high visibility, air-brushed paint scheme, giving you one very pretty and very easy to see bird.

Bright and highly contrasting colors like this improve visual acquisition helping prevent disorientation to such a large extent, I have to wonder why it took this long for some manufacturers to get on board with outstandingly bold paint jobs such as this?

It's one of the least costly upgrades to any RC helicopter that likely has the largest overall impact in both visual acuity and desirability. 

Yes, we should be looking at mechanical & electronic specifications first and foremost as the canopy can always be upgraded (at extra cost), and has little to do with overall flight performance. I would be lying however if I said the out of the box canopy color scheme plays no roll at all in any heli purchase decision I've made. 

We are all different in what our eyes see best. Bright / florescent yellows, oranges, greens & pinks are the colors I personally see best at distance so it's little surprise why I like Blade's color choice on the 330 S.  

Blade 330S 6250HX Flybarless SystemThe 330S Comes With Spektrum's High End 6250HX Flybarless System / Flight Controller

Last up is the flybarless system (FBL unit) or as some call it the flight controller.

Unlike the 330X that used the Spektrum 636A combination FBL and DSMX receiver; the 330 S is using Spektrum's high end FC6250HX flybarless system with a small SRXL2 DSMX receiver. 

Yes, it's another proprietary SMART component and we have already established my subjective thoughts on them, but no question the 6250HX is a definite and huge upgrade over the 636A. 

Even though I dislike SMART and proprietary Spektrum forward programming, this is an impressive FBL system in terms of performance, tunability, telemetry and helicopter size/type adaptability. It has SAFE stabilization if you wish to use it either as a crutch or as a rescue option. 

For people who already have a Spektrum computerized radio that has forward programming and want flight controller telemetry, this is a no brainer and top notch RC helicopter flybarless system - full stop. 

Too much to cover on this 330S overview so here's a link to Spektrum's FC6250HX product page if you want to spend a couple hours getting fully acquainted with it. 


Two Customary 330 S Versions

Blade 330S RTF and BNF OptionsOne Good Looking Bird!

As with many of Blade's helicopters, the 330S comes in two familiar versions; Ready To Fly (RTF), and Bind and Fly (BNF). Both are "Basic" versions meaning no battery or charger are included with the package so you have to get those separately if you don't already have them.

This is another downgrade from the 330X RTF along with the 450 and 400 versions that came before, which all came with a 2200mAh 3S LiPo and basic 3S charger. 

Why, because Horizon want you to use their proprietary Spektrum SMART batteries and SMART chargers. You don't have to, but they want you to and including an overpriced Spektrum SMART battery & charger would push the cost of the 330S RTF way over their primary competition - the Align T-Rex 450LP ARTF which comes standard with battery & charger and is in my opinion a much better helicopter. 

The 330S ready to fly version is around $550 USD with the BNF version coming in about 80 bucks less. 

That extra $80 bucks for the RTF version gives you the 6 channel Spektrum DXe radio.

Spektrum DXe 6 Channel RadioSpektrum DXe 6 Channel Radio

The Spektrum DXe is a 6 channel radio (minimum number of channels to control a collective pitch RC helicopter).

The DXe is also a computerized radio although programming has to be done by external display methods using a smart phone or laptop/PC using Spektrum's free software application.

Thus no LCD display on the radio (to save costs naturally).

Programming an RC radio using external display devices is a royal PIA! It works, but it's far from practical or particularly easy. Making simple and quick on the fly programming adjustments is all but impossible.

If you are honestly serious about getting into the hobby and the RFT version Blade 330X will be your first helicopter and DXe, your first radio; I strongly recommend getting the BNF version over the RTF version, and put that $80 bucks toward a proper computerized radio with display.

As I say many times, the radio in this hobby is more important than the aircraft and should be your more important decision.

The Spektrum DX6e for example at $300 USD would be a much better choice.

Yes, along with the added cost of a LiPo battery and LiPo charger, you will be closing in on $800 or over for the bird, better radio, battery, and charger; but please don't overlook getting a decent radio. Even if it's a used computerized Spektrum radio, which you can find many good deals on.

The DXe will work, but again, like I often say, the radio is the "heart" of the hobby"; don't overlook its importance because it's an investment in your RC flying journey.


330S Specifications, Owners Manual, & Ordering Information

  • Heli Size / Class: 450 Size, Electric Powered, Collective Pitch
  • Completion Levels: RTF Basic & BNF Basic 
  • Length: 25.8" (655mm)
  • Height: 8.77" (223 mm)
  • Main Rotor Diameter: 28.38" (721 mm)
  • Tail Rotor Diameter: 6.1" (155mm)
  • Tail Drive Method: Belt
  • Flying Weight: Apx. 27oz (774g)
  • Swashplate/Head Type: 120 Degree eCCPM, Flybarless
  • FBL/RX System: Spektrum SMART FC6250HX & With SRXL2 DSMX RX
  • Motor: 450 Class Brushless Outrunner, E-flite 440H 4200Kv
  • ESC: Spektrum Avian 1030 30Amp SMART
  • Cyclic Servos: 3X Spektrum H3055 Sub-Micro Digital MG / Torque 29 oz-in (2.1kg-cm) @ 4.8V; 36 oz-in (2.6kg-cm) @ 6V / Speed:0.067 sec/60 deg @ 4.8V; 0.053 sec/60 deg @ 6V, at no load
  • Tail Servo: 1X Spektrum H3065 Sub-Micro Digital MG / Torque:12 oz-in (0.9kg-cm) @ 4.8V; 15.75 oz-in (1.1kg-cm) @ 6V / Speed:0.036 sec/60 deg @ 4.8V; 0.029 sec/60 deg @ 6V, at no load
  • Flight Battery Required: LiPo 3S 11.1V 2200mAh 30C+
  • Approximate Flight Time: 4-8 min flying style and head speed dependent 

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