eZee NOW – 3rd TIME IS A CHARM (ELECTRIC MOTOR ASSIST)


Those who have followed my trek concerning electric motor pedal assist on my tadpole trike know about my experiences with BionX. After returning the 3 BionX hub motor and components for a full refund I ordered a Golden Motor Magic Pie Edge hub motor conversion kit. Right off the bat I experienced problems and regretting buying it. The rim was different than any other I have ever had and my Schwalbe Marathon Plus tire was extremely difficult to mount on it. After getting it on the rim it was even more difficult to get it “concentric” on the rim. As difficult as it was to work with in a shop atmosphere I can’t imagine trying to change a flat tire while out riding. Then when I tried to install it on my trike the width was too wide to fit between my dropouts. All 3 of the BionX wheels I had went right into place like any other typical wheel. I didn’t want to, but I ended up spreading my rear stays to gain some width in order to get the wheel into place. Once I got it into place and hooked things up I test rode it and discovered that even though it had very good torque it only had a top speed of 14 mph … and that is only with a fully charged battery. It dropped off down into th 13 and 12 mph range within a couple of miles of riding. It should have been capable of at least 20 mph. It turned out that it had a faulty controller (which like BionX is built into the rear hub). The dealer would have sent me another controller that I would have had to install. That is not something I cared to get into. Then he offered to send me an entire new wheel assembly, but it would have been the same nightmare I ran into with the first one so I said no, I just want to return it for a refund. Unfortuately this dealer won’t refund the shipping charges either direction so I am out a good size chunk of money. I am not happy about it, but there is nothing I can do about it. I returned it and am waiting for a refund.

Another factor that helped me dicide to return it was that there in no place near the rear wheel where the wiring can be disconnected if one needs to remove the rear wheel. I would have to cut a bunch of plastic cable ties and turn my trike over on its side in order to get at all the wiring tucked up underneath the seat to access the nearest plug connection to get it apart. That is ridiculous and I wanted no part of it.

Meanwhile I ordered yet another hub motor conversion kit. This time I ordered an eZee brand (http://www.ebikes.ca/shop/electric-bicycle-kits/ezee/ezee-rear-kit-advanced-pas.html). It is the 350 rpm viersion which is what the 20 inch wheel size requires so that the speed is about the same as a larger diameter wheel has. The 26 inch and larger diameter wheels use 250 rpm motors. According to what I have read about e-bike motors higher rpm is better than lower rpm. Up until now the 4 hub motors (3 BionX and 1 Golden Motor) were all direct drive (gearless), but this eZee is one with gears. It is slightly louder, but not alll that bad. Upon installing it and trying it out in the street in front of my house it accelerated up to 27.5 mph. They only claim a top speed of about 20 mph so I was a happy camper to discover it goes faster.. I took it out for a longer ride and so far I really like it. It doesn’t have the torque that the first BionX motor had nor the Golden Motor so I am a little disappointed in that regard, but overall I like it quite well. I expected the torque to be equal to or greater than the direct drive motors since it has a 1:5 gear reduction and the motor is rated at 1000 watts at 48 volts.  I discovered that the top speed I obtained of 27.5 mph dwindles down as the voltage of the battery goes down. Only when I had voltage in the low 50s could I obtain the higher speed. As the voltage dropped down into the high 40s my speed fell off to about 25 mph where it stayed for quite some time. By the time my battery voltage fell off down into the mid 40s my top speed reduced down to about 23 mph.  I am plenty satisfied with that.

Between this hub motor kit and the battery, battery charge and rear rack the battery mounts in the cost was less than $1800 and I am not locked into a proprietary system like BionX where they charge 2.5 to 3 times as much for a replacement battery as I can buy one for now. And I can get a far more powerful battery for less money. BionX doesn’t even offer such a battery.

As to the physical size of this eZee hub motor it is about the same as the 350 watt BionX hub motor. One thing I don’t care for with this eZee hub motor is that the wiring comes out of the end of the axle rather than out of the side plate of the hub motor like BionX and Golden Motor did. I think that is just plain stupid, but a lot of hub motors are made this way. In fact, most of them are.

Yes, I could have bought a cheaper hub motor kit, but I don’t think I would have been satisfied with it. I did a lot of research and reading about various hub motors before making my decisions. unfortunately my choice of the Golden Motor turned out to be a bad choice and it was an expensive lesson. Now only time will tell if my last choice was a really good one. Right now I am a happy camper. I don’t yet have the torque sensor installed and working so I am only using the hand throttle. I am waiting on a new crankset to arrive as the torque sensor is the wrong sloine size for my existing crankarms. Having to replace my perrfectly good crankset is an additional expense I was not counting on, but if I want the torque sensor to work I have no choice. And I do want the torque sensorr installed and working so it will be a true “pedal assist” unit.

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About Steve Newbauer

I have a few current blogs (tadpolerider1, navysight, and truthtoponder) so I am keeping busy. I hope you the reader will find these blogs interesting and enjoy your time here. Feel free to email me at stevenewbauer at outlook.com

Posted on February 28, 2018, in electric motorized trikes, motorized trikes, pedal assist, tadpole trikes and tagged , , , . Bookmark the permalink. 7 Comments.

  1. Steve, You have had a lot of issues with these various brands so really hope this EZee works out for you. We’re suppose to be out riding and having fun instead of dealing with issues.

  2. I have only heard stories of nightmare incidents with the rear hub motors, but I didn’t really want to say anything to add to your problems figuring that you had enough on your plate, yet so far.. I can’t use hub motors so I was automatically unable to use one on my bent being that I have four wheels and the two in the back are being driven by my Rohllf inner gear hub drive, so that prevents me from using them all together.. I believe in mid drive motors.. I believe in them because,no.1 I have not heard any bad reports about them,.. My other reason I like the mid drive, is because all the new bike manufacturers are using them, and I have to believe they have to have been testing them in their R&D department and would never had put them on their bikes if they were no good, or dangerous…. I have been planning to put a motor on my bent Fat Cat Quad, But the cost is considerably higher, and has to be it’s only fault that I can find.. But when the time does come to buy one it will be a mid drive and it will be a mid drive with a recognisable brand name that I can depend on… Oh and I will never have to go thru any kind of nightmare changing any of my tires, which I can change over from a knobby to a road tread in 13 mins. flat.. And I never have to remove the wheels either…!
    But I wish you good luck with whatever hub drive you choose to put on your trike…

  3. Right on Steve. I hope you can reinforce your feelings this Spring. When my time comes, I’ll have to check with you!

  4. Glen McWilliams

    Steve, you did not mention which model eZee motor, which controller or battery specs. Can or will you enlighten us?

  5. I was wondering what had happened with your electrification of your trike—I remember all of the trouble that you had with all of the Bionix units, but because the FB group seemed to have disappeared, I didn’t know what had happened. Hopefully this one will work well for you at last.