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Neumotor's SuperMassive
Neumotor's Oversized SuperMassive 6700Kv 2000 Watt Brushless Motor

Were some are just nuts over Nitro, I am completely besotted by brushless.  In my quest for ultimate brushless dominance, I found Neumotors ("New Motors").  Along with powering more than a few boat world speed records holders,  Neumotor has also powered the current RC Car record holder at somewhere North of 130MPH.  What caught my eye was their brand new 2.8HP SuperMassive 6700Kv 2000 Watt motor... now this looks interesting.

Though Neumotor is well known in both boat and aircraft circles, they have never produced a "R/C Car" specific motor.  The closest thing the company has to a R/C car motor is the 1.56" diameter 15XX Massive series motors. With a little beefier length and width than the industry standard 1.4" diameter 540/550 sized motor cans, you can now understand the name.  The Massive name also applies to the a super high efficiency design, which delivers nearly double the power (wattage) of other competing motors. All Neumotors feature maintenance-free lifetime sealed bearings, high torque 4-pole magnet design, 60,000 maximum RPM, industry leading 85+% efficiency, a standardized 4 bolt motor mount pattern, high current motor leads, and solid milled aluminum body design. Neumotors' intent is to eventually release R/C car focused motors, but for now Neumotor should be considered an advanced custom upgrade.  Need a special winding, high current gold banana connectors, or in my case a 3.2mm (1/8") pinion shaft instead of 5mm? Yep you can go completely nerdy here and Neumotor will build your motor exactly how you want completely by hand.

A problem picking a motor was that there are a ton of options in every series, but Steven at Diversity Model Aircraft (the sole distributor) worked through specs to find a solution to my application.  In my case I wanted to use my Mamba Max sensorless brushless ESC to deliver both stupid speeds and moronic power all without running tons of cells.  The solutions was the 2000 watt, 200 AMP, SuperMassive 6700Kv (aka the 1509/1D/3.2) measuring 1.56" W X 2.1" L. 

The downsides to this beast of a motor are that it is not plug and play, has somewhat confusing airplane focused installation instructions, perforated can ends that must be covered to prevent dirt from entering the motor, and heavy duty 8 gauge soldered wire motor leads which are painful to connect to.  The size itself could also present some challenges with mounting, but fit like a glove on my Traxxas Bandit with room to still allow a pretty broad gearing range.  The SuperMassive comes without a notched pinion shaft, but I experienced no slippage even under very heavy loads.

The upsides are that the 2.8 horsepower Neumotor SuperMassive 6700Kv is the most powerful high Kv motor which fits into most small 10th scale R/C's with twice the power output of Castle's CMS36 motors, or any of Novak's motors including the HV series, or ... well you get the idea. Efficiency is about the same as Hacker's C40 motors, but the SuperMassive still delivers a higher Kv and a third more power - i.e. it will be faster with less input. To make connections to the Mamba Max ESC simple and easy, 4mm male banana connector tipped motor extensions were attached to the motor leads.  Sensorless motors have no particular wire order, if the motor runs in reverse, switch two of the leads.  The can holes were sealed with clear packaging tape to keep the motor running clean. Due to the power hungry 4-pole motor design, starts were rough when geared for warp speeds, but tweaking settings on the Mamba Max smoothed things out a little. Observing the 60K motor RPM limit I stuck with my trusty 6 & 8-cell GP3300 high current side-by-side packs for testing. 

Let's contemplate that 2000 Watt figure - that's almost four times a Novak High Voltage Brushless 6.5 Maxx focused motor and the 200 AMP limit matches the max output of the Mamba Max! It's like putting a Hemi in a go-cart. The performance of this 2000 watt motor will make your jaw drop and is simply stunning.   With stock geared the Bandit wheelied at any speed.  Can you say torque flip. As a bashing setup the motor produces comical amounts of torque which shredded the Bandit's plastic idler gear in mili-seconds and required an immediate aluminum Idler gear upgrade.  With the Traxxas 31T speed pinion installed and running 6-cells, I witness 52.3MPH. With 8-cells the SuperMassive delivered 62.5MPH and was power wheelieing at about 30 MPH. Why does anyone need more power than any normal brushless system? No idea, I am still giggling. I can now terrify both myself and any other R/C short of a 3.3 Jato with with 60+MPH speeds on just 8-cells and a near stock Traxxas Bandit - don't forget the RPM bumper.  With an extra cell or a 3S LiPo pack, beating a 3.3 Jato is a very careful trigger pull away. 

WHAT DID WE LIKE?
Torque, torque, and more torque, what's not to like.  On just 6-cells, the 6700Kv SuperMassive kicked out insane amounts of power that rocketed an almost stock Bandit to illegal speeds that would make any Nitro R/C envious. The super high motor efficiency, extended run times to well over 10 minutes when geared normally.  At 6700Kv, 60,000 RPM, and 2000 Watts, there is nothing else like this motor from any any brushless motor manufacturer.

WHAT WOULD WE CHANGE?
With a sticker price of $225, the NeuMotors SuperMassive isn't cheap but in the higher end class of brushless motors such as Hacker and Lehner, the Neumotor offers specs beyond their offerings at around the same price.  Although the high current 8 gauge stumps are appreciated from a current perspective, solder tabs such as those on new Novak motors and non-perforated end bells would be greatly appreciated. Smoothing the motor out at starts and low speed with high gearing is tricky. Please make this ROAR approved - we need more 360 degree torque flips in races.

CONCLUSION
Even with the shortcomings and the $225 price the Neumotors SuperMassive motor gives us a peak at how good brushless technology has become and delivers huge speeds, enormous torque, at impressive efficiency that justifies the price and install hurdles of this high efficiency 2000 watt 6700Kv motor.  If you want ultimate nitro destroying power, are willing to pay for it and can put up with a few installation inconveniences, the Neumotor SuperMassive stands alone in a big way.  

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ON THE OTHER HAND
Neumotors are not for the neophyte, but out on here on the benchmark defining fringe where efficiency, power, torque, and speed take on a different meanings, Neumotors are simply the finest brushless motors currently available but are the price of an entire system.  Taking this motor to the max and upgrading the Bandit with RPM 5x11 carriers and bearings would easily deliver 70MPH speeds. When geared normally the acceleration is like nothing you have experienced.
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THE FINAL CALL
Highs - Any complaints are immediately forgotten once you pull the trigger. Great fun at track day - kinda get looks like your R/C is powered by alien technology.
Lows -  Not for the brushless beginner. Open can design, painful attachment to stumpy motor leads, one size "may" fit all, and rough starts. ROAR approved? [Insert laughter]

SPECS Type: Sensorless Brushless Motor: $225 Class Rivals: Hacker & Lehner
SOURCES: Neumotor sales contact Diversity Model Aircraft www.FlyDMA.com Phone 858-693-8188