Finding an ebike or kit can be a challenge in today’s environment. Everyone claims their kits and bikes are great, but how do you really know? If you research ebike kits on popular forums, like endless-sphere or V is for Voltage, you’ll get a wide variety of opinions, often conflicting. These forums are great and have a lot of useful information, but trying to sort the wheat from the chaff, so to speak, can be a real challenge!

When I was researching electric kits, I know how much work it took and how difficult it was to know who to trust. That’s why I decided to have an open door policy on questions, and make sure we provided the best information and answers we could, not just representing one vendor or brand of ebike or kit. I’ve had people ask all kinds of questions, both people buying their first kits, as well as those buying a second or third kit. Here are 3 common mistakes or misconceptions I’ve found many people to have.

1. Putting a front motor on a suspension fork

This is usually a big mistake. Most suspension forks are made out of cast aluminum materials. The aluminum is strong, but not flexible, and can be brittle. A rotating front hub motor puts a lot of stress at the fork dropout – the little U shapes in the fork that hold the wheel to the fork. Under this kind of stress, the drop outs can crack and break, causing your wheel to no longer be attached to your bike. You can imagine the consequences of this, especially if it occurs at high speed. If you are thinking of converting a bike with front suspension forks, it is recommended to go with a rear wheel motor.

Fortunately, steel is a more flexible material and less likely to break under stress. So putting a front motor on a steel fork is perfectly acceptable. I recommended adding a torque arm to these forks, which translates some of the rotational force to the fork arm, and not just the drop-out. With a steel fork, torque arm, and proper installation, a front motor is often a great solution, and results in a bike with “all wheel drive”.

2. Assuming a pre-built electric bike is higher quality than an electric kit

Many people in the market for electric bikes often assume that a bike that is made as an electric bike at the factory will be superior to an electric conversion kit. While ebikes are great solutions for some people (which is why we carry them), for some people, an electric kit could be the best.

The main differences between ebikes and ebike kits are in performance and style. Ebikes have the advantage of being designed around the electric system, so often come with built-in battery compartments, and low-profile, stylish designs. The ebike kits, however, are not integrated into your bike, so batteries are often carried on a rear rack in a pannier or bag, which some people don’t like, and there is additional wiring to run along your frame. One exception is the Bionx kit, which is well designed to fit very cleanly and look great on bikes with a triangular frame.

Another main difference between ebikes and ebike kits is in performance. Because ebikes are sold as a complete unit, they are often powered on the low end to comply with any potential laws about bike speed, and also to protect the companies from a liability perspective. Most ebikes top out at 15-18mph and provide pedaling assistance on hills, but won’t be able to propel you and the bike uphill on their own. Many riders can achieve 15-18mph under their own power, so the electric assist only helps on hills. (Sometimes that is all we need!). Ebike kits, however, are often higher power. Many of them have a top speed of 20-30mph, and have more climbing power. These kits are better performing for the rider who is looking for speed or who is carrying a heavy load.

And lastly, for some of the less expensive pre-built ebikes, the non-electric bike components are often of low quality, just like you would have on inexpensive regular bikes. This might be fine for the user who only rides the bike occasionally, but if you’re planning on using the bike regularly, you don’t want to pay a lot of money for a bike, only to have it start breaking and having to have parts replaced after a year of use. If you are in the market for an ebike, make sure you check out the bike component quality as well as the electric system, and be prepared to pay a little more to get something quality. Or consider converting a quality non-electric bike  using a conversion kit.

3. Buying a kit that is overpowered

Because most people do not have a chance to ride an ebike or ebike kit before purchasing, I find that many people want to get the highest powered kit that is available. When you aren’t sure if you can get up that particular hill you have in mind (which might be steep or long), it is natural to want to get the most powerful kit to ensure you have enough oomph. However, in many cases, the most powerful kit is overkill and you end up spending too much money and carrying around more battery or motor weight that is necessary.

An illustration of this phenomenon is what we saw with our BMC motors. First, BMC had a V1 motor (a “400watt ” motor) which is internally geared and has great hill climbing ability. Compared to pedaling up a hill without a motor, the V1 makes it so you can pedal moderately, as you would on the flats, and still climb up the hill. This was great and many people were excited.

Then along came the V2 motor, which was even higher powered (“600W”). This motor is for people who want high speed or high torque applications. It’s main advantage is being able to handle more power. This was fabulous and everyone thought it was “top of the line” and the best motor for xyz. The high speed motor is capable of speeds over 30mph even (that’s FAST for  a bike). Everyone was happy until…

BMC comes out with the V3 motor, which is supposed to be a 1000W motor. Now everyone is asking about this motor – is it better than the V2? Is that what I need? The problem with these higher powered motors is that in order to take advantage of the extra power, you need a BIG battery. Because they tend to be battery hogs. And big batteries are pricey and can be heavy.  And most batteries simply don’t last as long when putting out the high currents needed by these high-power motors.

By all means, if you are looking for very high speed, carrying a cargo trailer with 500 lbs of gear, or climbing 30%+ grades, then go for a high powered motor that can handle these applications. But if you are commuting with yourself and a 20lb briefcase, then you might not need to fork out that extra dough. The standard eZee kit at 36V, for example, is an incredible performer, and will easily tackle just about any hill, even on loaded cargo bikes, and is relatively lightweight. If you compare it to riding your bike unassisted, you’ll be blown away by its performance. (If you compare it to a sports car, however…well then you might be disappointed. )

If you have a chance to ride an ebike or ebike kit before purchasing, that is by far the best way to get a feel for performance. If there is no store in your area carrying ebikes, check out some of those forums (endless sphere, V is for Voltage)  and see if there is an ebike enthusiast in your area that might offer a test ride.

Some may accuse me of being heavy handed in promotion of electric-assist for bikes. To me, this is not a marketing schtick. It is an education schtick. Ever since I got my first electric motor kit for my bike in ‘94, I’ve shown it around, and many people – especially avid cyclists and bike shops – have been dismissive. I think this stems from an attitude that bikes are a recreational tool rather than a transportation tool. After hearing that attitude for all these years, perhaps I’ve grown a bit defensive about it over time. But, really what I want to accomplish is education – letting people know that electric bikes exist, and can help many people with the goal of biking more often (i.e. from none at all to at least once or twice a week would be a big step!).

So, to do that, I like to tell little stories about my experiences, and here is the latest. We recently became a Madsen Bicycles dealer, and got some of them in stock. One of the things that is exciting about this bike is the ability to haul up to four kids at a time, all sitting nicely seat-belted on benches in the rear bucket.

This is a Good Thing for those of us with families that exceed the carrying capacity of the Xtracycle, Yuba Mundo, or Big Dummy (all of which carry only two kids, max).

So, I have been using the Madsen for short trips hauling kids around the local area, and it is great. But our area is hilly enough, that hauling 120 pounds of kids up the hills is a slow endeavor. The first hill starts right at my driveway, with a 50 ft climb. And there are many more hills riding around Carrboro and Chapel Hill (this is the Piedmont, after all). So we have been planning on putting an eZee electric hub kit on the bike, but presently they are out of stock at our store, so the bike is currently un-assisted.

Anyway, on the Saturday of Easter Weekend, I was taking the kids for an Easter Egg Hunt activity put on by a local organization. I really wanted to bike over there with them, rather than use the car, because it was a beautiful, sunny, 70-degree day. By the time we got the stuff together, we only had 45 minutes to get there. If I knew exactly where I was going, and if it was on the closer side of town, that would have been enough time to ride. But I didn’t know that area of town well, and I recall that part being quite hilly. Well, anyway, we loaded up into the bike and started up the first hill out our driveway, and I quickly realized that I just didn’t have the energy to haul these kids over all those hills for about 20 miles round trip, while being in a hurry to get there on time (and possibly getting lost in a hilly area of town). So we turned around, back down the hill we went, and we got in the car and drove instead.

Now, if we had already had the electric assist installed on this bike, I would not have hesitated to go by bike. The hills would have been much less of an issue, and I also would have felt less time pressure, since I would have saved 10-20 minutes of riding time.

So here is a case where if I had electric assist, I would have gotten well over an hour of moderate exercise pedaling the assisted bike to and from the activity, whereas instead I got none (and didn’t have time for another bike ride that weekend). And, I burned up well over 37 kWh (kilowatt hours) of energy by driving the car over, when the e-bike would have burnt up much less than 1 kWh.

Someone who lives in a flat place (e.g. Davis, California or much of Texas) reading this might not be able to relate. One thing I’ve noticed with my Big Dummy cargo bike is that when it is fully loaded, pedaling it on the flat lands is only a tiny bit more energy than pedaling it unloaded. But once it gets to a hill, all that extra load weight becomes very noticeable. So, anyway, if I lived in a flat place, pedaling the Madsen with the kids 10 miles each way wouldn’t have been such a big deal. But with these hills, it is a big deal – enough so that it makes me much less likely to use the bike, and instead, just take the car. I’m looking forward to having that assist on there! (Aside: These bikes are now available for rent for trying out).

We got a funny call this morning. A woman had read the article about us in the University Gazette. She happens to work in public health. Somehow, she queued in on my statement that “electric bikes are more efficient than the human pedaler,” and she was prepared to scold us, since her research indicates there are huge energy costs that go into treating the epidemic of obesity in this country.