Electric Bike specific issues, including batteries, chargers, and motors. Not for liquid fuel bike kits.

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18
votes
2answers
5k views

How much motor do I need for my electric-assist bike?

I take my twins to preschool by car, and I'd like to switch to doing it by bike. There's a hill, and we're heavy, and I'm not in great shape, so it's hard. I've done it a few times, but I always ...
13
votes
4answers
4k views

Why are electric bikes so expensive?

The limited selection of electric bikes available at Halfords ranges from £699.99-£1,199.99. What makes them so expensive — the dynamo, battery, or something else?
13
votes
4answers
872 views

What kind of tires should I buy for an e-bike, commuting on maintained off-road?

I need to buy a new front tire for my new e-bike. Let me give you a few of the conditions I'll be riding in, and I'd like your advice. First of all, this bike is primarily going to be used to commute ...
9
votes
6answers
385 views

Is an e-bike more of a bicycle or more of a scooter?

With new battery technologies a new kind of "bicycle" has emerged - so-called e-bike. It usually has an electric motor on one of its wheels. The motor is powered by a rather huge (size of a small ...
9
votes
2answers
675 views

What should I do to get an older bike into good condition

I recently bought a hybrid human/electric bicycle at a garage sale, and I've been working on getting it into usable shape again. It is about 10 years old, and needs some work. The battery was quite ...
5
votes
1answer
86 views

Electric bike: Do I need display?

I'm planning to buy an electric bike kit. However, I don't really like adding the display for aesthetic reason. However, the display (either LED or LCD) has function on/off and low/mid/high power on ...
5
votes
2answers
235 views

What criteria should be considered for choosing an e-bike for commuting?

My girlfriend is looking for an electric bike for commuting. My question is fairly broad - What features and capabilities should we consider when choosing an e-bike for commuting? For information, ...
4
votes
2answers
2k views

What electric bikes are for sale in the US, and how good are they?

I am interested in purchasing an electric bike but am puzzled as to what brand is best. It seems as though most companies are importing their products from China, which is great because they are low ...
4
votes
1answer
858 views

Electric Bike (eBike): Freewheel or Regenerative braking?

Not asking for opinion which one is better, so please do not state without some reasons why one is better than another on eBike. Question is: Freewheel or Regenerative braking is more efficient in ...
4
votes
2answers
1k views

EBike hub motor vs external motor

Some bikes, e.g. Busettii Vortex use an external motor, while others (by the same manufacturer) use hub motors. Busettii claims that external motors have higher efficiency (http://www.biyadii.com/), ...
4
votes
1answer
260 views

Why is my electric bike 'clanking' under load?

I have a Giant Esprit Twist Power electric bike, which apart from not having nearly enough words in its name also has a problem related to the crank. When I put a lot of load through the pedals there ...
3
votes
2answers
238 views

Kalkhoff Agattu (e-bike) Panasonic 24v engine dead - worth repairing?

UPDATE: http://www.kalkhoff-bikes.com/en/bikes/e-bike/e-activity/agattu-impulse-8-hs-8-g-1.html I went with one of the above. It's not a 2016 model though. The Impulse 2 drive is awesome. My ...
3
votes
1answer
120 views

Front Hub Wheel Falling off

I have a Generic 1000 watt front hub motor and the front wheel keeps coming loose. What should I do? I think I have heard of something called a torque arm. Will this help?
3
votes
2answers
282 views

Bosch Nyon computer — syncs but no activities are transferred

I have an electric bike with a Bosch engine (Performance Line) and a Nyon Computer. My eBike Connect app (on iPhone) is able to connect to the Nyon (see screenshot) but no activities are ...
3
votes
2answers
3k views

24V Vs 36V Brushless DC HUB Motor For Electric Bike

I am considering buying an electric bicycle using brushless DC Hub Motor. What is the difference between 24V Vs 36V motor? Is it related to the maximum torque produced by the motor? If yes, what does ...
3
votes
2answers
538 views

How to convert a commuter CX bike to an Electric bike?

I would like to convert my current bicycle into an E-bike. While there are many conversion kits available and plenty of sites with tips on this, none of them quite meet my needs, or they fail to ...
2
votes
2answers
225 views

Stepper motor for ebike

In these days I'm going to design a e bike project. I'm going to use BLDC motor for that. but normally (according to my knowledge) there are two types of BLDC motors. there are, normal BLDC motor and ...
2
votes
2answers
157 views

The new Copenhagen wheel - a worthwhile investment? [closed]

I've been looking to reduce how much I sweat on my commute to work, and I've been looking into electric bicycles. Upon looking, I saw the copenhagen wheel: an all-in-one electric bicycle conversion ...
2
votes
2answers
390 views

Bosch Nyon and W-LAN

I have an electric bike with a Bosch engine (Performance Line) and a Nyon Computer. The Nyon is not able to connect to WPA or WPA2 password protected networks. If I remove authentication on my ...
2
votes
2answers
137 views

Will 40km E-Bike trip in Texel Island(Holland) be hard for untrained people?

I'm planning to have a trip in Texel island(North-Holland) in April, We are a group of 5 people, 22 years old, who know how to ride a bike But we do not train on cycling. Will a trip of 40km, in 8 ...
2
votes
2answers
1k views

Do DC HUB Motors For Electric Bikes use regenerative braking?

Or do I need a special control circuit aside from the included electronics?
1
vote
4answers
128 views

Replacing quick release wheel with ebike - motored wheel

I intend to upgrade my FireFox Sniper V to electric, by replacing the front wheel with a motorised kit wheel. My question is that the wheels (both) are quick-release: is it safe to motorise this ...
1
vote
2answers
101 views

High speed electric-assisted bicycles [closed]

This question is about electric bicycle conversion kits. There are federal laws, state and municipal laws governing the use of e-bikes in the US. Most of them say, no more that 1000W, no faster than ...
1
vote
1answer
278 views

Has anyone tried this “poor mans” homemade electric bike idea?

I have a wiper motor from some car or van that has a shaft on it. When I apply 12 volts to it, with no load on it, it seems to spin at about 125 RPMs. I vaguely remember that when I load it, it can ...
1
vote
1answer
89 views

Need Connector for Motor - I don't want to buy 50

I have no idea what I've gotten myself into, but I've bought electric bicycle motors and they didn't come with the connectors. Apparently the below link is the type of connectors I need. Is there an ...
1
vote
2answers
352 views

tricycle engine compatibility?

Hi I was wondering if any bike engines would be compatible for a adults tricycle? An example of the bike I am talking about: TinyURL: http://tinyurl.com/otuo2d2 Thank You
0
votes
2answers
124 views

Converting from V-brakes to Disc Brake without existing mounting holes [duplicate]

I have an Electric Bike with rear brakes which are not as strong as front disc brake (countless amount of tweaks never solved it well without rubbing the wheel too much). So, I am looking at ...