The BajaBoard Atrax range consist of the Base, High Octane and Enduro. These models are grouped together because they are all built upon the same chassis (which we call the Atrax chassis).  The key differences between the models are from the electrical and electronic setup.  For detailed board specs, please refer to product page here.

MONO-SHOCK SUSPENSION

The Atrax features a unique mono-shock suspension system, inspired by Formula One.

It is a more compact suspension system compared with the G4/X build.  Most obviously, it has half the number of shock absorbers. A key reason behind creating the Atrax was to offer something smaller and more compact for our customers.

Like the G4/X suspension, the Atrax mono-shock system also offers an incredibly stable ride over all types of terrains.  Even at speeds above 30kph, the board will feel manageable for the average rider.  It will float over bumpy gravel, grass and dirt, as well as cracks and potholes on the street.

A distinctive feature of the mono-shock suspension is that it 'tightens up' as the board goes faster.  In other words, when you are slow, the board can turn sharply quite easily, but as you go faster, the board will require more force from the rider's feet to turn.  This is done purposefully so that the board feels more stable at higher speeds and avoid speed wobbles, whilst remaining agile when casually cruising around. 

Another fun feature of the Atrax suspension is that the shock absorber can be easily retrofitted. We do maintain that our Baja Shocks will provide you with the best handling, but just for a bit of fun, you can change them out for Rockshox, Fox or other bike brands' rear shocks. Just make sure they are 210mm eye-to-eye.  

 WHEELS

The Atrax High Octane and Enduro can be fitted with both 8" or 10" wheels.  For the Atrax Base, due to its smaller motor, we only recommend the 8" wheel.

For general commuting or cruising, 8" is ideal as it is the more efficient option.  For off-roading, 10" would be the better option simply for the extra ground clearance.  You don't want to have to worry about every rock scratching the bottom of your board. 

It should also be noted that 10" wheels make the board easier to turn than 8".  So if you want that extra agility, the larger wheel option is the way to go.

One question we frequently get asked is "why don't you use hub motors"? There are a number of reasons.

1. Lighter wheels provide better handling. This is why people pay tens of thousands of dollars for lighter wheels in performance cars. It would actually be significantly cheaper for us to put in hub motors, compared with having an entire drive train with CV drive shafts - but we are about providing the best performance and handling.
2. Hub motors just don't provide enough torque for the performance we want from the board.  We want the Atrax to be capable of going up a 30% grade incline from a standing start, not a board you have to push start.  A planetary gear hub motor may help somewhat here, but it's a big chunk of wheel weight, which reverts back to our first point.
3. Motors are critical and expensive parts in the board. We want to keep them as 'sprung mass', so that any bumps from the terrain is not directly impacted upon them.  Hub motors would count as 'unsprung mass'.  Your wheel hits a rock - guess what? That's a hit on the motor as well.  Maybe not as big of a deal for a street board, but off-road, we want the shock absorbers to absorb the shock, not the motors. 

Don't get us wrong, we are not hating on hub motors.  It's just that they are not suitable for our particular design goals.

BATTERY

There are 2 batteries in the Atrax range.  For the Base and High Octane models, we use a 907Wh (10S6P Molicel P42A) pack.   For the Enduro, we use a 1800Wh (10S10P Samsung 50E) pack. 

RANGE

Range is a variable number.  It changes depending on rider weight, riding aggressiveness, terrain, slopes, wheel alignment, and even temperature. 

For Atrax's, there's an additional variable in the form of wheel size.  Atrax can be fitted with either 8" or 10" wheels.  For smaller wheels, less power is required to start or stop, so it is generally more efficient for longer range.

Our specification numbers are based on a 75kg (165lbs) rider, riding on mostly compact park or bike trails, with occasional stop-starts.  Like how most people may ride from home to work.  8" wheels are used. Tests are typically carried out at 20-25C (68-77F) temperatures.

From this, we can achieve around 45km (28mi) on a 907Wh pack, and up to 100km (62mi) on a 1800Wh pack.

If you weigh much more than 75kg, if you are riding in near freezing temperatures, or if you are constantly riding through high resistance terrain, then you can expect deviations. 

GEAR DRIVE

All Atrax models have an enclosed gearbox transmission system.   

We use herringbone or double helical gears.  These gears run quieter and smoother than spur gears, and do not produce an axial load like single helical gears. 

The Atrax gearbox require less maintenance compared with belt drives.  We do recommend opening up the gearbox at least once a year to inspect and regrease the internals.