Bafang (8fun) Mid-drive Motor—Lectric Cycles Style

This is the Bafang 350 watt motor that was on the 29er. The 750 is just a little wider and heavier.

Thanks to LeGrand and the good folks over at Lectric Cycles, I have much more insight on the Bafang mid-drive motors. Offered in a 350 watt and 750 watt version, these are exciting pieces. I spent a recent day with both, and fully enjoyed the fun and knowledge. Powerful, quiet and useful are just a few of the terms I could label them with. Introduced to the market less than a year ago, Lectric Cycles has helped get out the word on this efficient mid-drive and also helps to tailor them for the American market.

The 350 watt version came to me on a pretty nice 29er mountain bike. It had all the power one should need, was programmed nicely and could fill the needs of almost any E-bike enthusiast. I should have ridden this one first as the 750 watt bike they dropped off was a true rocket ship in the disguise of a bulky sand and snow fat tire bike. Called the Chubby 750, it is a 48 volt off-road powerhouse that could be way too much E-bike for everyday riding.

I had some great fun riding these two bikes from Lectric Cycles.

Funny thing is that when LeGrand brought the two bikes over for me to test and evaluate, I was sure he had told me they were both powered with the 350 watt Bafang mid-drive. I was surprised and confused that all that power and speed was coming from a motor rated at what I consider the perfect size. Yes, I powered that fat tire E-bike up a local grade at over 20 (easily with mellow effort at the pedals) and rolled down with more energetic pedaling at double that (speed still building, fat tires and all).

This is the drive side view of the 350 Bafang (8fun) mid-drive motor.

Although considered (and sold) as a E-bike conversion, Lectric Cycles has ready-to-ride bikes on hand, and will be glad to build you exactly what you want too. The Bafang mid-drive will fit on most bikes with no mods and could easily become the must-have conversion kit. Programmable, light and whisper quiet, I am now one of its biggest fans. Mid-drives are becoming better and more desired all the time for many reasons, here are some of them.

In no particular order, let’s talk balance. With the motor and gearbox low and centered in the chassis, it is in the optimum spot. With the power-assist working through the bike’s own gear train, the available power and torque can be realized better than a hub motor. The motor is part of the bike, not the wheels, which simplifies maintenance and eliminates wires that hang and flex. The weight of the motor is part of the bike, not the wheels, which helps the handling and reduces un-sprung weight. Plus the mounting method is miles above others I have seen in person and on-line.

If this Lectric Cycles Chubby 750 had wings it would fly.
It was kind of flying without them.

A couple draw-backs are associated with mid-drives too. The most understandable one is extra wear and tear on the bike’s drivetrain. The additional power is absorbed by the chain and gears. Shifting with the motor powered-up amplifies this. The Chubby 750 was equipped with a NuVinci N360 rear drive hub that I feel is a better combination as opposed to the more-or-less standard cassette drive on the 29er. Still, the NuVinci wouldn’t shift while the power was applied, making for some inconvenience at times.

The other thing that can be troublesome with mid-drive is understanding how it works (when to shift and how shifting affects the bike’s performance). Most will take to it right away, as shifting a bike becomes second nature the more you ride. It works much the same as a non-E-bike when you shift to take advantage of your own legs power at different speeds, but adds one more dimension to the equation. Some will relish the extra finesse it takes to stay in the sweet spot, while others may never find themselves at one with the whole set-up.

The 29er had the 350 watt version. I would recommend this for its power and versatility.

Your battery options are many. These two both had different batteries, yet they were both mounted at the water bottle cage location. This won’t work for every bike. A rack mounted battery is another way to go and Lectric Cycles can accommodate you there too. Other ways to carry your batteries are frame bags and backpacks. 36 volt and 48 volt batteries are the basic norms here and different Ah ratings can alter your range and affect the cost involved.

Both bikes had different display units, this being the newer model.
Both were nice and easy to read.
BTW, the Chubby 750 had a left side thumb throttle and a remote switch for setting the display.

Programming can make the 8fun mid-drive fit your needs perfectly. This is one area that Lectric Cycles has put a lot of energy into and works hand-in-hand with 8fun (Bafang) on. Both these bikes are dual control (pedelec and hand throttle). Each one was programmed a little differently so I could experience the subtleties they offer. The way an E-bike control system works is a big interest of mine so I spent some extra time with LeGrand discussing what can be obtained with this mid-drive. It turns out I really like what I heard.

I am quite familiar with programming motor control systems due to my involvement with electric R/C airplanes and cars. It can make or break your connection and ability to connect with the incredible amount of power electric motors make. Such things as power limiting, soft start, curves and other parameters make a big difference. Lectric Cycles pre-programs their conversion kits, yet is happy to set them for your own needs. I can’t remember if it is possible now, but programming your own Bafang mid-drive motor from your home laptop will be fun and allow you to find the perfect settings to make it sing your song.

With power and climbing ability to spare, the Chubby 750 is one awesome E-bike.

This mid-drive will be (and is now) going to have some stiff competition in the coming months and years. Because of their popularity, more and more firms are putting bikes with mid-drives on the market. I have ridden quite a few and found this one to be as good or better than any of them. Compact, looking good, and performing exceptionally, Bafang is rounding the bases after a solid hit to the grandstands.

I take my (baseball) hat off to LeGrand and Lectric Cycles for going out of their way to get me tuned-in to another great item on the E-bike agenda. These two bikes and the power behind them are worth looking into. Bafang has turned the world’s heads with their awesome hub motors and is now doing the same with mid-drive.

I suggest you find a way to try out one of these like I did, Turbo Bob.

“Tens of thousands who could never afford to own, feed and stable a horse, had by this bright invention enjoyed the swiftness of motion which is perhaps the most fascinating feature of material life.”—Frances Willard, How I Learned to Ride the Bicycle.

You can find Lectric Cycles on the web and Facebook

Here is a direct link to info on the Chubby 750

I posted three videos from that day. You may notice in the one with the Chubby 750 I thought I was riding a bike with the 350 watt Bafang mid-drive motor. I found out later why it was so powerful and fast. Here are the links.

About Turbo Bob's Bicycle Blog

E-bike Enthusiast Vintage Bike Enthusiast
This entry was posted in Bike accessories, E-bike general interest, E-bike test reviews. Bookmark the permalink.

6 Responses to Bafang (8fun) Mid-drive Motor—Lectric Cycles Style

  1. I purchased a 750W BBS02 from Lectriccycle, and I can attest to the build quality, performance and customer service. The Install was a breeze, even for a first-time ebike builder like myself. For more info, everyone should check out and view the topic on these drives.

    Happy riding!

  2. I just read your article on controls and torque-assist. Bafang doesn’t have torque-assist, is it still easy to ride or should I continue to look for a pedelec with this type of control?

    • Charlie, this mid-drive Bafang is fully programmable. That gives it the ability to be set in ways that can be very similar to a torque sensor equipped E-bike.
      There are more production E-bikes coming out all the time with the torque sensor control systems, although many do not work in the best of ways (read safety). To my knowledge the only conversion kit out there with this control is the BionX. It works very well.
      As E-bikes become more sophisticated, you will see more torque sensor equipped E-bikes on the market. It is a great system, yet without the correct programming I still think you are better off steering away from them.
      I will continue to learn more and ride more bikes, but for now the bikes with that system I like are the BionX and the eFlow.
      I think the new Bosch mid-drive might be a new candidate for that list. I have ridden prototypes, but have yet to ride the final production versions.
      As control system comfort and safety are big on my list of important E-bike features, you can be sure I will do my best to learn more and report what I find.
      Talk to LeGrand at Lectric Cycles about your programming options to see if this great new mid-drive can be set in a manner that suits you.
      Thanks for following along, Turbo.

  3. Randy says:

    I have just installed the 8fun, and now seek to have a better understanding how the programming works. There are levels, a speed sensor, and a crank sensor. Is it safe to say the levels are simply power levels. Level one provides a certain amount of power, level two somewhat more…and so on. Is this correct or is there more to it.
    The speed sensor must then only be used to cut out, if the maximum speed is reached, and of course to provide a speed on my display. Is this too correct?
    Now, so then what does the cadence sensor do. Is it just to engage the motor or shut it off if the pedals are not turning? Or is there some cadence level at which the power to the motor is adjusted?
    I’d appreciate any help or links to sites with this sort of information.

    • Randy, sounds like you have it figured out pretty well. I would assume you got it from Lectric Cycles. They are the only firm to work directly with the factory to get it in the best shape for the American market. Just contact Chris over there and they can clue you into all the programming options.

  4. Ebike Dude says:

    8fun and Bafang is a great company and they make an excellent electric motor. I personally have two ebikes that both have a Bafang 750W motor and they have worked really well for the past 3 years.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s