NCM M7 Review: Why the Torque Sensor Changes Everything for Hub-Drive E-Bikes
My First Ride on the New NCM M7
I have ridden a lot of electric bikes over the years, particularly rear hub-drive e-bikes, so when I first got onto the NCM M7, I thought I knew more or less what to expect.
I didn't.
Within the first few pedal strokes, the M7 felt noticeably different from the traditional hub-drive e-bikes I have become accustomed to. The motor was still sitting in the rear wheel, but the way the power arrived felt far more connected to what I was actually doing through the pedals.
The reason is one of the most important upgrades on the latest NCM M7:
the torque sensor.
For me, this is the feature that turns the M7 from simply being another powerful hub-drive electric mountain bike into something that represents a significant step forward for this type of e-bike.
Hub Motors Have Always Had a Lot Going for Them
I have always liked good-quality hub-drive systems.
They are relatively simple, proven, and can deliver plenty of assistance without adding the complexity and cost that often comes with a mid-drive system.
NCM's Das-Kit rear hub systems have been around for years, and the M7 continues with a Das-Kit rear hub motor rated at 300W for the New Zealand market, with up to 500W peak power. It is paired with a large 48V 19Ah / 912Wh battery. Leon Cycle NZ currently advertises a potential range of up to 180 km depending on conditions and assistance level.
But there has traditionally been one characteristic that separates many hub-drive bikes from the natural feeling of a good mid-drive system:
the pedal sensor.
And that is where the M7 surprised me.
Cadence Sensor vs Torque Sensor – You Feel the Difference Immediately
A traditional cadence sensor is essentially looking for pedal movement.
You start turning the pedals, the bike detects that you're pedalling, and the motor begins assisting.
It works great and has its applicaiotns where it is exceptional, but sometimes the assistance can feel quite binary.
You pedal.
The motor switches on.
You stop pedalling.
The motor switches off.
Depending on how the controller has been programmed, there can also be a slight delay before the assistance arrives.
For commuting or relaxed riding that's often completely acceptable, but when you're climbing, riding through tight corners or trying to carefully control your speed, you become very aware that you are pedalling and the motor is responding separately.
The M7's torque sensor changes that relationship.
Instead of simply recognising that I'm pedalling, it responds to how much effort I'm putting into the pedals.
Push harder and the motor gives me more assistance.
Ease off and the assistance reduces.
The result is surprisingly natural.
The Motor Starts Feeling Like Part of Your Legs
This was the biggest thing I noticed on my first ride.
With some hub-drive e-bikes, I feel as though there are two separate power sources:
me
and
the electric motor.
On the M7, that line becomes much harder to notice.
As I increased pressure on the pedals, the motor assistance increased with me. When I eased off, the motor backed off.
Rather than waiting for the motor to decide what it was going to do, it felt as though the bike was responding directly to me.
That's a major improvement.
NCM specifically lists the torque sensor as one of the distinguishing features of the current M7 and the wider 7 Series, alongside the large battery, hydraulic brakes, GPS/tag technology and USB charging.
Starting From a Standstill Feels Much Better
One of the situations where I noticed the torque sensor most was pulling away.
On a conventional cadence-sensor bike, you often need to begin rotating the pedals before meaningful motor assistance arrives.
The M7 feels much more intuitive.
As soon as I put pressure through the pedals, the bike understands that I want assistance.
That makes starting:
- on an incline
- at an intersection
- on loose ground
- on a trail
- or with the bike in a higher gear
feel considerably more controlled.
It's subtle until you've ridden both systems back-to-back.
Then it becomes very difficult not to notice.
Hills Are Where It Really Makes Sense
Christchurch gives us plenty of opportunities to test e-bikes on different terrain.
On flat roads almost any decent electric bike can feel impressive.
I find hills much more revealing.
As the gradient increases, I naturally push harder on the pedals. With the M7, the torque sensor detects that additional effort and increases assistance accordingly.
I didn't need to think:
"I need more motor now."
I simply pedalled harder.
The bike responded.
That is exactly how pedal assistance should work.
It is particularly effective because you're combining that intelligent input with the M7's 48V electrical system and high-capacity battery. The current New Zealand M7 uses a 48V 19Ah, 912Wh battery, while Leon Cycle lists the rear Das-Kit motor at 300W nominal / 500W peak.
Technical Riding Becomes Easier to Control
The other area where I immediately appreciated the torque sensor was slower riding.
Electric assistance isn't only about maximum power.
Sometimes what you actually need is less power delivered more accurately.
When navigating tighter sections, rough surfaces or low-speed situations, suddenly receiving a large predetermined amount of motor assistance isn't always what you want.
With the M7, I found that I could control the motor much more naturally through pedal pressure.
Pedal lightly and it responds lightly.
Put more effort in and it responds accordingly.
For me, this is possibly more important than simply having a larger motor.
This Is Why I Think Torque Sensors Are a Game Changer for Hub Drives
Mid-drive bikes have traditionally been praised for feeling natural because their power is delivered through the bicycle's drivetrain.
Rear-hub motors, meanwhile, have frequently been associated with a more obvious "electric bike" feeling.
I think bikes such as the M7 are beginning to challenge that distinction.
The motor is still driving the rear wheel directly.
But the way the motor receives its instructions from the rider has changed.
That's the important part.
A torque sensor doesn't turn a hub motor into a mid-drive.
What it does is make the hub motor respond far more intelligently to the person riding it.
And personally, I think that is a big deal.
You retain many of the advantages that make hub motors attractive while getting considerably closer to the responsive pedal feel normally associated with more expensive drive systems.
Then There's the 912Wh Battery
The other thing that's difficult to ignore on the M7 is the battery.
At 48V 19Ah, or 912Wh, there is a lot of energy available.
Leon Cycle advertises the M7 at up to 180 km of range, although—as with every e-bike—I would treat maximum-range figures as ideal-condition figures rather than what every rider should expect every day. Actual range depends heavily on terrain, rider weight, tyre pressure, assistance level, wind, temperature and how the bike is ridden.
What I care about more is having a substantial energy reserve.
It means I can enjoy the assistance rather than constantly worrying about conserving every percentage point of battery.
The battery is also integrated into the frame and removable for charging, while the current M7 includes NCM's battery TAG/GPS technology and a USB charging port.
The Rest of the Bike Matches the Electrical System
The M7 isn't just a motor and large battery bolted onto an ordinary mountain bike.
The current New Zealand specification includes hydraulic disc brakes, an RST suspension fork with hydraulic lockout, an 8-speed Shimano drivetrain and 27.5 x 2.35 tyres, together with the Das-Kit C8 display.
For me, hydraulic brakes are particularly important on a heavier and faster electric bike.
You've got additional bike weight and motor assistance, so being able to control the bike confidently is every bit as important as getting it moving.
Who Do I Think the NCM M7 Is For?
After riding it, I don't see the M7 as being purely for someone looking for an electric mountain bike.
I think it suits a much broader rider.
It could work particularly well for someone who wants one e-bike for:
commuting during the week, Christchurch cycleways, long recreational rides, gravel and mixed surfaces, hills and weekend trail riding.
The large battery gives it genuine versatility, while the torque sensor makes it enjoyable even when you're not interested in simply riding around at maximum assistance.
My Biggest Takeaway From Riding the M7
If you showed me the specification sheet before I rode the bike, I probably would have focused on:
912Wh battery.
300W Das-Kit motor.
Hydraulic brakes.
GPS technology.
Up to 180 km advertised range.
Those are all valuable features.
But after riding it, the feature I would talk about first is the torque sensor.
That surprised me.
It fundamentally changes how the bike communicates with the rider.
Rather than feeling like:
Pedal → motor turns on
it feels much closer to:
The harder I ride → the more the bike helps me.
That sounds like a small distinction on paper.
On the bike, it isn't.
Have Torque Sensors Changed the Future of Hub-Drive E-Bikes?
For me, the M7 demonstrates that there is still a lot of development potential left in hub-drive e-bikes.
The conversation used to be relatively simple:
Hub drive = affordable, powerful and simple.
Mid-drive = sophisticated and natural.
I don't think that distinction is as clear anymore.
Pair a well-programmed rear hub motor with a good torque sensor, large-capacity battery and modern controller, and you can create an e-bike that feels remarkably responsive while retaining the advantages of a rear hub system.
That's why I regard the torque sensor on the NCM M7 as more than simply another feature for the specification list.
For me, it's the game changer.
Come and Ride the NCM M7 at E-Mega Christchurch
Reading about the difference between cadence and torque sensing is one thing.
Riding it is what makes the difference obvious.
If you're considering an NCM M7, come and talk to us at E-Mega Christchurch.
We can help you understand the bike, battery, motor system and servicing requirements and, subject to availability, get you onto the bike so you can experience the torque-sensor system yourself.
E-Mega – E-Bike, E-Scooter & Battery Specialists