Complete 72V BBSHD Motor, 3250 Watts ASI BAC 855 Controller 72v Battery 865Wh + 4a Charger 45MPH
This is the fastest Off the shelf BBSHD solution in the world.
Higher Volts, Higher RPM Higher Speed !
Now with fully PAS 750c Display
This is truly plug n play and expect RELIABLE speeds of around 45+ MPH
For international orders wil be additional shipping charge at check out.
If you want to know the performance of this take a look: https://youtu.be/42Q6uEVNmwA
Ultimate BBSHD, battery and Controller Screen –complete kit with 750c Display 72v High Output battery and charger and Gear Sensor motor cover all included!! (
Did you ever wish your BBSHD went substantially faster, pulled harder and you didn’t have to be told you can’t buy the controller you want – shush it’s a secret?
Well thanks to a very clever friend of ours, we are the UK and EU distributor and co developer for this exceptional device.
Advanced processing and state of the art allows it to compute much faster and much more accurately than the standard Bafang unit (or any modded Bafang controller). Imagine your first media phone in comparison to the latest Iphone/Android device? – Things have moved on and these Canadian devices have not been designed with penny pinching mass market sales like the original. All of this makes your 72 V motor pull much harder and release around 15% more speed than a 50A Bafang controller and whopping 100% more power than the standard. (NB, please see our note about displays). We might add the power is designed to come in without the mechanical snapping lurch of an inferior set up.
These controller have been set up so that the motor can handle anything from 50 A up to 300 W (easily within their design). This might mean a little explaining:
We have tested the BBSHD to destruction and on more than one occasion right up to 4500 Watts and learned a few things, real facts and not the odd exception.
Amps create heat, heat weakens the nylon gear and too many watts snap the pinion. So how do we get around this? Simple, know the limits but don’t get too close. Sure these are now nearer the limit, but ridden correctly (let the motor spin and don’t labour in the wrong gear), a reliable ride can still be had. At the lower volts where big amps are needed, we have capped the limit to 50A but as you increase your volts, we capped the watts to 3250 W. A ludicrous controller at 50A has 2500Watts – so does ours, but now add 10 -15% improvement through field weakening and then up the rpm further by going 72V (try that with a a crappie luda controller)!
But here it gets even better, Change your battery and go up to 20s 72 V (any voltage form 13S to 20S, 48V -90 V) and the controller takes it (not a Bafang originated 60 V cap). Your watts have now jumped to a dangerous 4200 watts on a “hot” (fully charged battery at 84 V), so we reduce this limit to a safer 3250 W (peak), but still so much powwweeeeer!
This is recommended as a throttle only and single speed (easy to adapt your free hub to single gears) application due to high RPM and low gearing. Your bike will accelerate like a rocket and still hit around 45 MPH, depending on how you gear your bike. You can accelerate faster or have a higher top speed. We find 45 MPH is enough. Bigger explanation further down.
You can still use your favourite pedal assist gear, just don’t use it in the high power settings. This may take splitting the cassette up and using spacers to put the optimum gear in the center for better chain line, place and the smaller low power gears on the outside Th n on used gears then go on the inside where they are used just as as spacers..
Because of the weakness of the Nylon gear, the use of low gears is necessary and we recommend front 42T and rear no smaller that 28T on 29er or 27.5″ wheels and 26T on 26″ wheels. Smaller the reae rwheel, the main rear cog can be redued in size. So a 20 inch wheel mat be able to go something like 20T rear cog.
We have tested this set up thoroughly with a 250 lb rider without issues.
No need for gear changes (although in low power mode this is still very usable with PAS) as the massive increased RPM range and large rear gear allows blistering acceleration and high top speed. Because of high voltage, low amps are used to obtain more watts. For example 72v x 50A = 3600 watts compared to 52v x 50A = 2600 watts. and we all know that high amps create motor killing heat, we limit the motor o 3000 w.
A 72V system uses less power and generates less heat but makes you go much faster.
The down side? = more money for the more advance controller (advanced field weakening) and the higher cell count battery. PAS is less suitable and the motor spins much faster. Because of the higher RPM a really good chain line is really important: drastically reduces wear and stops chains from snapping.
You no longer need other gears! your weedy legs are obsolete!!
We ship the controller with three power levels, but can easily be change through the display to have either 5 or 9 levels..
level 1 is around 1000w and hits speeds of around 30 mph with modest acceleration (similar to a standard BBSHD) and a range of around 30 miles
level 2 is around 1900w and hits speeds of around 40 mph with good acceleration and a range of around 20 miles, we tend use this setting all the time as our main settings).
level 3 is full power and hits speeds in excess of 40 mph with blistering acceleration and a range of around 12-15 miles (we use this button like a Turbo, its too much for day in day out riding).
750C Display 48-72b switchable, display. Rock Solid reliable with no updates required and leaky case.
Full PAS function is available with a choice of up to 3 = 5 – 9 levels.
ONLY OUR 750c display will work for PAS without additional firmware.
Quick display demo: https://www.youtube.com/watch?v=Q3jwI4axDHw
Controller Feature Set
- FOC (Field Oriented Control)
- improved torque throughout the rev range
- Higher RPM compared to the stock controller on 52V and especially on 72V (Up to 8000RPM)
- Silky smooth throttle control and responsiveness.
- Improved efficiency due to FOC algorithm, premium internal components within the controller (like the mosfets) which increases efficiency while reducing heat losses
- Automatic sensored to sensorless transition which gives you addition 5% top speed and better performance
- Supported displays are 750c
- Voltage set to 72V
- Programmed for 3250W, # of Assist levels (Power / Speed Map) are set within the display and will scale accordingly. Example Assist 1-3, Assist 1 = 33% Power / Speed. Assist 2 = 66% Power / Speed. Assist 3 = 100% Power and Speed.
- Dimensions 81mm x 55mm x 39mm
- Weight 300 grams
The kit includes:
ASI BAC 855 48V – 90V FOC 90A set at 72 v (can not be easily changed)
Wiring loom to connect direct to existing BBSHD loom with Anderson Power connectors
Motor side cover
TFT 750C display
Free UK shipping
When ordering please supply your wheel size – thank you
Please note our controllers are locked and will stay locked to protect the hours and hours we spent programming and devoloping them. Sorry no exceptions
Gearing (video tutorial to follow or call for explanation):
Use a 42T front Chain wheel to “Clam Shell the motor and bring the chain line inbound – we sell a cheap Lekkie clone version)
Reduce your rear cassette size to improve the chain line, removing any gears smaller than 15T and create your perfect centre-line around the 26T/28T rear sprocket (depending on wheel size)
Remove the old 9 -10=11 speed cassette and use the gear range from 15T to lowest gear. We love the Shimano XT CS-M771-10 speed cassette as shown in the photo. Use spacers to give you a perfect chain line for the gear of your choice. For 27.5 and 29er set ups we recommend a 28T rear gear. For 26″ wheels a 26″ T gear. For fat bikes as big as you can get! (32T +)
If you want to be very smart, you can use a 2.35 mm spacer from your old cassette to space out a 17T as a “Get you home” cog for pedaling or PAS assist in power level 1. But you might have to manually put the chain onto the cog. Use your old derailleur as a tensioner and give your self enough chain (we recommend KMC x10e chains) to move up and down you have. You will want to adjust your max/min screws so the chain does not slip off the outer sprockets (You may need to change these for longer screws)
Photos of rear gears and spacers are not included
Graham C I don’t think the BBSHD is weak as people say. Abuse it yes and something will fail just like any mechanical product. My motor was purchased from Francis Janssen in November 2017. Since then I have completed 7000 miles with approx half of those miles with a Luna Ludicrous controller fitted. My 20 miles daily commute, downhilling, bmx tracks, trails the lot ! I’ve not touched anything internally on the BBSHD and it’s running better than ever, all these stories of nylon gears failing I’m sure is down to the rider, have some mechanical sympathy and you’ll be fine. As Francis states I have now fitted the ASI 888 running on 72v, I followed his advice, got my chain line in order, correct gearing and 500 miles later she is absolutely flying, a weapon indeed. It’s far exceeded my expectations, high revving, smooth ramp up of power, throttle response, acceleration is crazy compared to the Ludicrous, top speed, all fantastic and so much fun, it does not feel like the motor is working hard. I am extremely pleased. I can thoroughly recommend this conversion and Electron Cycles ( Francis Janssen) for there professional services. Go for it !
BBSHD Motor (standard):
BBSHD Mid Drive kit is light but strong and unprecedented levels of engineering (Rated 1000W – 1500W dependent on setting and have a proven to work reliably at 4000Watts) and Max Torque 160 NM) More efficient than HUB motors giving greater distance and response. This mid drive provides powerful ebike performance meanwhile keeps the original pedaling in comfort. With an integrated speed sensor, this mid-drive motor is compatible with standard bikes. Throttle only use in PAS mode “0” is available allowing to rest without pedaling and a further 9 levels available with “on the fly” switching.
These motors are regarded as the very best in the EBike world. Extremely quiet and robust. Fully waterproof and internally lubricated within sealed casings. There have been recorded distances of 25000 miles and still going!
This motor is designed to fit bikes with a Bottom Bracket between 68 mm to 73 mm
The motor is designed to work with batteries rated at 48
Motor weight: 5.8kg.
An independent review:
The kit comprises of:
BBSHD mid drive system : BB:68-73MM
1.BBSHD + Mid-Drive Motor: 1 pc
- 750c Display
- Thumb Throttle: 1 pc
- Waterproof Quick Release Wires: 1 pc
- Speed Detecting Sensor + Magnet: 1 pc
- 46T Chain wheel: 1 pc
- Left Crank + Right Crank: each 1 pc
- Fixing Plate: 1 pc
- M5*10 Nuts: 5 pcs
- M6*12 Nuts: 2 pcs
- M33 Nuts: 2 pcs
- ST 3.9 Nuts: 5 pcs
- Gear Sensor
- 6v light cable
Pleas note, to reduce the price we remove the standard Bafang controller at the cost price.
Weight of BBSHD motor: 5kg.
The ASI BAC 855 is locked by us and cannot be re-programmed by third parties. The Bluetooth function is also locked. We do this to protect our intellectual property and the try to recoup some of the hours and hours or programming and testing that went into this device.
Warranty: The ASI is compete covered by our 12 month warranty. It does not cover accidental damage or damage from shorts or water.
The BBSHD is fortunately not covered. This device is being sold to you to be used in a tuned non factory set up. If used correctly with the correct gearing, it is a reliable for thousands of miles, But like any customized or “tuned” product, is liable for failure if used incorrectly.
Attempting to reprogram the controller may cause damage and invalidate any warranty to the controller
We give a limited 6 month warranty of this package.
72v 12Ah 864watts Jumbo Down Tube Battery. Sony VTC6 Cells 65Amps 4A Charger
72v 12Ah 864 watts Jumbo Down Tube Battery. Sony VTC6 Cells. 65Amp Nominal, water proof quality BMS designed for motors and at their best upto 65A. Made with 0.2mm pure nickel sheet welded battery with cell holders.This is the highest Amp hours UK available down tube type battery on the market, designed to fit on down tube utilizing water bottle bolts (we advise the addition of Alfatex by Velcro straps) These cells are the “king” of 18650 cells are Branded specifically designed for high output discharge and sustained high drain. Other inferior cells used in cheaper packs simply can’t deliver like these. If you think the cost is high, these batteries have 80 cells that retail in the UK for around £5 each! not including: BMS, casing , charger, shipping taxes AND FABRICATION. The fabrication in these batteries is much more labor intensive than our other down tube batteries and use much higher and more expensive components (thicker and heavier nickle sheet and higher power BMS)
We do not recommend these batteries for power output above 65A,
This in reality a small battery for such high power 20S4P. Motors like the CYC x1 pro can kill almost anything if ridden incorrectly. Just like a car or motorbike, full power continuously will speed up breaking things. When riding your bike, allow the motor to spin when in high power mode. Use your low gear (big teeth count on the rear) this will take the load off the motor. This will also give you better range and stop everything from over heating. This battery is designed to handle 65 A and higher bursts, but doing so increases the chance of failure. When you want to ride very fast on throttle, set you gear to allow gear and middle to top of cassette to save your chain and let the motor spin. When you want to PAS (pedal), drop the power and use the whole cassette. Your bike wasn’t designed to do both at the same power setting. Riding with electrical sympathy, better for yo better for your bike and better of your electrical components.
All down tube battery cradles can only handle 30 A if the power is passing through the battery case puns. For that reason we take a direct exit from the back of the battery direct with an XT90 connector To handle up to 90A
Please ALSO note, these are genuine new cells and made up into complete battery specially by us. Thanks to Paypal fees, shipping and taxes the markup is minimal! Not all down tubes are the same and some slight modification maybe necessary to the mounting plate of the battery. You tube has an abundance of “How To” videos. (Due to changing world shipping, we are now also making batteries here in the UK
We do not connect the USB port as we have found that with our wet UK weather, can cause reliability issues.
We recommend the purchase of Alfatex velcro 30cm * 3cm (avaialabe on Ebay) for additional support.
Google “Tip for hard mounting shark pack to bicycle frame Ebike
Space required, please see photo= H 128 mm * L 368 mm * W 91 mm please allow another 25mm to get on and off cradle
Charging: First time charging is VERY important. Always connect the charger to the battery with the battery turned on and the charger turned on from the mains. This will stop/reduce a “Connection Spark”. The battery needs a “Balance Charge” on first charge. Please charge as above. The charger will display two red lights (charging) after a long period of time (between 1 and 8 hrs – depending on state) the LED charger lights will display red and green. This indicates an initial charge is complete. However, as this is a new battery, not all cells within the battery are balanced (same state of charge as some were higher/lower than others to start with). This is because cells can arrive at the factory in different batches and may have slightly different charges due to time in storage). This is very common and normal. Now please leave the charger connected to the batteries for a further 12 hrs. This allows the internal balancing system (BMS) to balance out all the internal cells. The charge may turn on and off over this period of time. This “Balance charge does not need to be done every time and is recommended every 20+ charges. Leaving the charger plugged in working does not damage the batteries. The charger is designed to stop charging at a preset level and turn on again when this level drops.
* 6 Month Warranty is for manufacturing defaults and does not over miss use or accidental damage. These units are extremely strong and robust and will not let you down unless abused. We undertake warranties here in the UK. We take the pain!
Please note, Lithium batteries are considered hazardous and due care and attention should be taken. Although these cells are in wide use, and professionally manufactured in a purpose built factory; because of the power of the battery, we strongly recommend that precautions are taken. We do not recommend charging inside the family home and charging should be supervised. We take no responsibility for misuse. These batteries are thoroughly tested (full discharge and charge cycles at the manufacturing stage and also pre-delivery). These are not DIY or amateur built devices.
4A 72v Charger included.
**** Due to the nature of this device (Off-Road) and exposure to water, rain, mud and the possibility to sustained high powered use/abuse. Our warranty is limited to 6 months from time of purchase.
Please note we have no affiliation with ERT