Questions tagged [electric-bike]

Electric Bike (e-bike) specific issues, including batteries, controllers, chargers, and motors -- as well as the legal or social issues surrounding their use. Not for liquid fuel bike kits.

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1answer
181 views

My impossible quest for the ideal hubmotor, any suggestions?

From what I gather, direct drive motors (DDM) are capable of bigger power. I suppose it's because their heavier nature allows them to withstand higher voltages and currents. They are also very quiet ...
3
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3answers
777 views

Any knowledge on LaFree Electric Bicycle?

I have this LaFree Electric Bike, all I really know about it is that it was made by Giant. I am an Electrical Engineering student and I am looking at bringing new life into it, would it be worth ...
3
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1answer
118 views

Electric road bike - Compatibility questions

I am building an ebike on a road frame. I am using a Bafang G310 rear hub motor & 8 Speed Shimano cassette. I plan to use a long MTB rear 8 spd derailleur (either Acera or Alivio). For my crankset ...
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4answers
1k views

My 1000 watt rated hub only pulls 6.7A (321.6 watts @ 48v) suggestions?

I am a big boy (~230lbs) living on a mountain. My 1000 watt electric hub powered by 78 18630 Lion batteries in 13 cells barely moves me level let alone up a hill (which was its intended purpose). I ...
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2answers
426 views

I keep getting flat tires on my E-bike

I got my first flat a month ago and it was a snakebite flat. I got it by hitting a small bump on the road with low tire pressure. Since then I keep getting flats after a few days of riding. Every ...
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1answer
414 views

Replacing a cassette with a freewheel

I am building an EBike. The motor manufacturer said I must replace the existing cassette with a freewheel. Why do I need to do this?
3
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1answer
151 views

What luggage carrying options exist for an e-bike

I am planning to build a DIY e-bike for my work commute and have the electronics already figured out (which motor, ESC, battery). After work I want to go directly to my other activities. Until now I ...
31
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15answers
12k views

Why aren't electric bikes mainstream?

I've lived in different cities in Europe and Australia, and I noticed more and more the creation of bike lanes, and increases in bike commuters. Still, the number of eletric bikes in the streets is ...
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2answers
172 views

RPM regulation of direct hub motors

I found this bike push-trailer. Because the trailer project is open-source I discovered that the used hub motor is MUXUS XF40 (specs here) In many places on the internet a learned that if such ...
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1answer
150 views

Does anyone know of a lightweight motorcycle style open face helmet for eBiking?

I'm relatively new to eBiking as I had always been able to pedal my bikes until a couple of years ago. One issue I found was the wind chill factor during winter. You can go faster than normal with ...
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2answers
209 views

Laws against electric assist bicycle with energy recovery? [closed]

Is an electric bike like this required any special license. The power applied comes from the collected kinetic inertia from going down hill or stored from the rider then the stored power can then be ...
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2answers
6k views

Bosch battery stopped charging

It is a Bosch powerpack 500 and the other day it stopped charging. The charger seems to have some output since one of the LEDs on the battery lights up. It is only one LED though and I believe I ...
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1answer
2k views

Increasing e-bike battery range by limiting speed

Can I get more range out of my e-bike if I put a speed limit on it? I got my bike a few days ago and I really am enjoying it. As of now I am getting about 35 km per charge. So I was wondering if I am ...
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1answer
172 views

Can a 26 Inch Controller Drive a 20 Inch Wheel?

My situation: A Bakfiets with a bad controller (hills too much for it I think) Supplier has offered to send me a new controller Supplier has also offered to supply a whole new separate battery - ...
6
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1answer
428 views

Why do most E-MTBs have 1x drivetrains?

I'm contemplating about getting an electric assist MTB but as much as I can see all (or at least majority) of e-bikes are equipped with 1x transmission. Is there a reason why there are no e-bikes ...
2
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1answer
135 views

What is this … electrical bike's setup? Is there a particular brand or model name for this? how to replace its battery?

Just bought it from someone, interested to get it fixed. he said it just needs to replace battery, I doubt it (after numerous experience with asking the sellers "what is wrong with the bike" and ends ...
3
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1answer
298 views

YouE planetary motor is having problems how do I pinpoiont the problem?

I was riding then I turned a corner went to turn the throttle suddenly it makes a loud grinding noise and is unable to accelerate. I got the motor open and it can only start turning when I roll the ...
2
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2answers
666 views

Shimano Steps E6000 battery charge percentage falls abruptly

When the battery charge gets to about 20-25% it drops abruptly to 5-10%. The steeper the hill and higher the load drop percentage is higher. Examples: from 25% to 6% steep hill from 13% to 8% small ...
4
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2answers
3k views

What is the process of adding a light to a Yamaha PW equipped ebike?

I recently got a bike with a Yamaha PW system. The bike computer has a light on/off button but the bike itself has no light and I want to add one. How do I do this? From what I understand, I need a ...
5
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1answer
171 views

E-bike drivetrain demagnetization

I've heard conflicting reports that demagnetizing drivetrain parts to prevent metallic debris sticking is a real thing I'm supposed to care about when servicing e-bikes, but I can't find anything ...
38
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10answers
14k views

Why do the majority of people on an ebike ride at a fairly low cadence?

Around the place where I live the electric bicycle is gaining popularity and it's easy to pick those on such bike from far away not just from posture (rather stiff upper body even on steep hills) but ...
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1answer
516 views

Retrofitting disc brakes on 2000 Specialized Stumpjumper FSR XC?

I just got an old 2000 Specialized Stumpjumper FSR XC that still uses rim brakes. I also have this 160mm rotor and this mechanical disc brake caliper. Since none of my wheels have 6 bolt holes to ...
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1answer
813 views

How do I identify the correct battery for my electric bicycle?

I would like to replace my heavy battery to a lighter one. My current battery lasts for 5 days, if I could replace it with something that can only last for a day, I'm fine with that but lighter. Is ...
5
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3answers
454 views

Experience biking with child trailer during winter?

What's your experience biking with child trailer during winter in the city? I live in Cracow, Poland. Recent winters were almost snow-less, but it's <0°C cold and slippery anyway. I am used to ...
2
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2answers
425 views

Should I lubricate a BBS01 clutch?

I am completing the rebuild of a BBS01 electric bike mid-drive motor from Bafung. Would like to lubricate and protect every part properly before reassembly. Should I lubricate the clutch and if so ...
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3answers
2k views

Can a road bike stand constant 40km/h for long distances?

I am planning on converting my road bike into an electrical one and I can see that I can get average speeds of 35-40kmh. So I am planning on biking long distances at this average speed. Is it safe to ...
39
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5answers
11k views

Why do e-bikes need dedicated tires?

While shopping for new tires on my bike, I saw that some dealers had a specific section for e-bike tires, where the various brands production for e-bikes was present. Why do e-bikes need dedicated ...
8
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2answers
3k views

Should I consider buying a velomobile as my daily commute vehicle instead of a bike? [duplicate]

What are the advantages/disadvantages between a (possibly electric) velomobile and a regular bike when in daily use?
4
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3answers
4k views

Charging eBike Battery with Solar

I need some advice / info on solar charging an eBike battery. We have two RadRovers from Rad Power Bikes. They are powered with a Panasonic Dolphin 48V, 11.6Ah Lithium-Ion battery https://www....
2
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1answer
207 views

Using Nylon vs. Silicone Washer on Bafang BBSHD BBS01 Mid drive E-bike Motor Assembly

Question - Can I replace the silicone washer in the BBS01 axle assembly with a like sized nylon washer? Background - I am rebuilding a Bafang BBSHD BBS01 mid drive e-bike motor assembly. I have ...
2
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1answer
236 views

Need help debugging ebike: Laggy motor / inconsistent behavior

My ebike has been acting weird lately, and I need help figuring out why. It's my daily driver, so I'm hesitant to turn it in for service, as that would probably take at least a month. The bike's one ...
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0answers
76 views

Central axis motor or wheel motor for conversion to electric bike? [duplicate]

I'm planning to convert my "mechanical" bike into an E-bike for riding long distances to work, and I would like to buy only the motor kit since I already have the bike. I can see that I have two ...
7
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6answers
8k views

Can I use an RC motor to make my bike electric?

I would like to make my ebike to have the minimal look, so adding big hubs or mid drive motors isn't really an option since it also costs more. I found this Keda brushless outrunner 2000w 190KV motor ...
3
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3answers
2k views

Can e-bikes speed up my commute? Which class?

I have a daily 15 mile commute (1-way) which takes me approximately 1hr 15 min each way if I bike (taking into account traffic signals and so on). The route is all surface roads, with some mild hills. ...
3
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3answers
840 views

How do you measure return on investment (ROI) for an electric bike?

As we consider an e-bike vs. a car purchase, I'm trying to assess return on investment (ROI). My cost factors are, in order of priority, time, money, and carbon footprint. My commute I travel 20 ...
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1answer
1k views

Finding the right size wheel for a electric bike kit [closed]

I want to convert my trek cross bike to a electric bike. I have 700c rear tire. The kits wheels seem to come in inches. What should I do?
1
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1answer
903 views

Pedal assist sensor possible for front wheel motor on ebike?

I'm looking into converting my current bike into e-bike. I run with IGH, so the only place for the motor is the front wheel. Is it possible to have pedal assist sensor (PAS) with this setup? I.e. no ...
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1answer
1k views

How to DIY electric bike modification - Schwinn 3-Wheel? [closed]

I've come across a mint condition 3 wheel Schwinn bike (big tricycle) and I'd like to modify it to be electric driven. My main focus is an efficient electric system and I would like to integrate solar ...
-1
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1answer
482 views

Strength/Safety of Suntour XCR Air RL-R/Budget Suspension Bikes

I have been riding bikes my entire life and I am now thinking of getting a new bike. Until the past year I have been riding walmart bikes and I never really thought much about the spec. I have gone ...
2
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1answer
4k views

How to choose the right brushless outrunner motor for e-bike project

I am planning to build my own electric bike and I have stumbled apon some confusion. I want to use brushless outrunner motors for this project as I have used these motors many times for other projects,...
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2answers
975 views

Changing wheel size when adding ebike kit to tricycle

I have a 20" wheel trike I plan to motorize. Can I add a 24" or 26" Hub front wheel motor and can I mix the front and rear tire sizes? What are the consequences for stability and cornering? I am new ...
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2answers
3k views

Can I fit a 26x3.5 tire on a 26x4.0 rim?

i have a sondors bike that comes with a 4.0 fat tire. i am tring to find a street tire for my fat boy i only found one and its 3.5 not 4.0 STREET TIRE
8
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2answers
3k views

Exceeding speed limit with Ebike, is battery affected?

I bought a ebike and happy with it. My 30 mins ride to work every day dropped to 15 mins. But according to law in country where I live motor stops when I exceed the speed limit which is 25km/h. ...
10
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3answers
1k views

Center motor ebike costs more, is it worth it?

I am 90% sure that I will buy an e-bike. Today one of my friends who owns an ebike strongly suggested that I should buy one with center motor, because they are more efficient and battery life will be ...
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2answers
2k views

City Bikes vs E-Bikes with baby trailer

We moved the Denmark where the bicycle roads are extremely good and there are only a few hills. Our house a bit far from the center so my wife and I will need to ride like 8-9km to city center quite ...
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1answer
555 views

Ebike gear conversion

I have a 29" mountain bike I'm going to put a motor on. I'm going to replace the back wheel with a 26" and my question is about the gears. I need two of them in the same side to freewheel ...
14
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4answers
2k views

Are electric bike speed limitations set in stone?

I'm thinking of getting an electric bike, and like most, it states the speed limit at 25Kph, which also happens to be the speed I typically cycle at. My question: is this speed set in stone? Is there ...
10
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11answers
23k views

Shimano Steps ebike E010 and E012 errors: DIY fix possible?

My Shimano Steps-powered e-bike is frequently but irregularly giving me the errors E010 and E012. In the E6000 Series Dealer’s manual and E8000 Series User's manual I found the following: E010: A ...
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0answers
58 views

Busettii electric questions

Anyone know which wires come out of this controller? One is not connected and I don't know where it goes! Thanks so much!]1
10
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3answers
1k views

Will a pedelec spoil cycling for me?

During the last few years I moved farther and farther away from work. I used to commute by bike a lot when I lived nearer to my workplace, but now it would by about 40km one way. I am thinking about ...