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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.

1
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1answer
18 views

What is the regular maintenance on electric hubmotors?

I don't own a Blix bike/electric bike though I rode one once... I was wondering where are the technical docs/howtos on the rear motor's maintenance? I have to rework the back wheel, replace axle or ...
0
votes
1answer
46 views

Bike kit needs battery , need help choosing a battery and confused by specs

I have a 48v 1000 Watt rear hub kit, with a multifunction LCD display. Voltage:dc48v,Current:28A Booster1:1,speed set 1:1-42v/dual mode, brakes : low level. Now I'm unsure what battery to get. Can ...
0
votes
4answers
825 views

What to expect from an e-bike service?

My e-bike manufacturer recommends a service every 1000km. Tomorrow I'll bring my bike to the shop where I bought it for the first service. I already had a mini-service for free at around 300 km in ...
4
votes
2answers
4k 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 ...
2
votes
1answer
79 views

Rickshaw electric conversion

Is it possible to buy a traditional pedal rickshaw and stick an electric bike conversion kit on it? The rickshaw I've seen is the type when the rider is at the rear and so has two wheels at the front ...
11
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8answers
18k 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 ...
3
votes
1answer
119 views

How often should I charge my (lithium) e-bike battery?

I had a retrofitted e-bike running a Leed e-bike kit for 4 years. After 800 charge cycles the battery was toast. However this system is quite basic with both the battery management & charger. I ...
6
votes
1answer
4k 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 ...
3
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4answers
233 views

How to commute by (electric) bike in excessive heat

I am from India and this is beginning of summer. I rented an electric bicycle for daily commute during winter but now it is difficult to do during summer screeching heat. What should I do to continue ...
4
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5answers
2k views

Could the E-bike drivetrain wear down till needing replacement after 400 km?

The drivetrain (chain? gears?) of my E-bike started to make loud clicking sounds, with the impression that the chain is skipping over teeth. The gear switching itself still works well. I have tried ...
2
votes
1answer
85 views

Brake weirdness on my new E-bike

I very recently purchased an E-bike for commuting to work and other area locales. I understand with any new bicycle there will be some break-in time and after a few rides I did notice the brakes were ...
1
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1answer
63 views

Ebike battery - volts and wattage

Will a 36V 500W ebike with a 36V 17.5Ah battery go farther and faster than a 36V 250W ebike with a 36V 10Ah battery, or will I give up something by doubling that wattage?
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0answers
36 views

Measure capacity of Lithium by Coulomb counter method while charging [migrated]

I'm learning to design a module to measure capacity (percent left) of ebike Lithium battery. Lithium cell ' specifications are 48V-13Ah, it's built from cell pin 18650- 2600mAh. I choose the Coulomb ...
7
votes
3answers
588 views

Understanding e-bike power/torque

In the UK e-bikes are currently limited to a maximum of 250W assistance if you wish to use them on public roads. However, it seems that the motors do vary in terms of the available torque - from ...
39
votes
10answers
13k 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 ...
7
votes
4answers
345 views

Why would I use an electric bike?

I live in an extremely flat city that lies about 15m above sea level. One has to drive an hour or two to reach even rolling hills. Several decades ago, I rode quite a bit, and accumulated a decent "...
0
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2answers
3k 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 ...
10
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3answers
2k views

Hybrid electric bikes, how do they work?

I'm about to move further away from work, so my 5.5 mile commute is going up to 12 miles (24 there and back). I'm not interested in using an elecrtic bike because I can't be bothered to pedal.. I ...
0
votes
2answers
65 views

Lifespan chain and gear wheels on e-bike [closed]

If is possible to give an indication of the average lifespan of the chain and gear wheels of an E-bike? Assuming: Cycling in all weather conditions (commute); Western European climate (10% of time ...
2
votes
2answers
101 views

Ancheer electric mountain bike cuts out under load

My year-old 250W Ancheer electric mountain bike currently has an issue. When going up hills, the motor is put under a lot of load and the battery turns off. It remains off until reset by toggling the ...
4
votes
2answers
150 views

How much is average annual maintenance of a mid-range electric bike?

I'm considering buying a mid range e-bike for commuting (3 miles one way, all city road/bike lane). it's about £1000 to buy the bike, but how much is it to service the bike? I don't need an exact ...
0
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2answers
41 views

24V eBike Battery

I have an 2003 Merida PC550 24v ebike which uses two 12v 9ah batteries. Is there a converter available to use one large 12v battery to get the same output? I know that I can use two 12v batteries in ...
0
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1answer
84 views

Bosch 400Wh battery first led only is flashing and refuses to charge [duplicate]

On a long trip with a lot of wind my 400Wh battery went empty.When i tried to charge it at home it refuses to charge. The first of the five leds is flashing. Strange because in the manual is written 1,...
-6
votes
1answer
85 views

What are all the ways in which E-Bikes can make MTB areas worse? [closed]

I want to pre-emptively say I am asking this as a devil's advocate. So, now that that's out of the way - Let's see if we can list all of the reasons given for why E-Bikes should be banned from ...
2
votes
1answer
67 views

Can I install/convert a Giant Quick-e+ 2019 to use an Alfine 11 speed IGH?

I have a Giant Quick-e+ 2019 and would like to install either a Alfine 11 speed di2 IGH. My first question is, is it compatible? I've been looking at the measurements and it seems all ok. But when I ...
1
vote
1answer
87 views

Levels of derailleurs, freewheels and chains

What are the levels of derailleurs (Shimano probably) I know Altus and Acera but don't know the higher end ones. I am putting this on my Sondors Fat ebike. I will be using a 7 speed freewheel, and a ...
0
votes
1answer
82 views

Is throttle-only possible for mid-drive?

Suppose I want an electric bike with throttle. Is mid-drive (crank based) even an option? I got impression that mid-drive means pedal assist only (PAS).
0
votes
0answers
37 views

Front hub motor for fat bike?

Suppose I want a fat e-bike with front hub motor. What are my options? Are there special motor hubs? Or you can somehow use "normal" motor hubs?
3
votes
0answers
64 views

Getting ride data from Bosch CX System

Recently got a Cube eMTB with Bosch CX system installed. Love the bike, does well for commutes and some bush bashing over the weekend. Being a nerd, I like my data. Considering the system already ...
3
votes
2answers
383 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 ...
2
votes
2answers
136 views

Does using a DH fork reduced to 150mm (6") make sense on an ebike?

I recently found out that you can apparently reduce the travel of 8" DH forks such as Fox 40 to 6". This raises the question: would it make sense to do this for ebikes? I like dual-crown forks because ...
1
vote
2answers
150 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 ...
2
votes
2answers
139 views

Is there such a thing as 'eBike specific' freewheel?

I've recently had the LBS replace the freewheel on my eBike after 500 ish miles of riding. The sprockets were not worn out, instead the freewheel bearing (not the hub bearing) had become loose. It ...
5
votes
3answers
2k 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 ...
12
votes
5answers
2k views

Are there reasons not to use always the max level of assistance?

I'm using an electric bicycle to go to work. My goals are: Not to arrive late Not to sweat (too much) My bike, like most e-bikes I guess, let me choose the level of electric assistance that I wish. ...
0
votes
1answer
104 views

Freewheel vs cassette geared hub motors serviceability

With ebike conversion kits there appears to be 2 types of rear hub motors: the ones that accept a cassette and a freewheel (see the image below from this aliexpress item) Is the freewheel option more ...
-1
votes
1answer
247 views

Light for Giant Quick e+ 2018

I purchased a 2018 Giant Quick e+ for commuting. Giant uses a modified yamaha PW-X system they have branded "syncdrive pro". The bike is great but the headlight it comes with stinks. I would like ...
39
votes
5answers
10k 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 ...
2
votes
3answers
73 views

Cons of using an infrequent use long range e-bike battery trailer using SLAs

So I've recently purchased an ebike and started thinking about how I could go long distances without charging. It occurred to me that whilst sealed lead acid batteries can't go through many cycles, ...
2
votes
1answer
129 views

Pedaling overhead with front vs rear hub motor

When pedaling with the motor not working, would a rear geared hub motor give more resistance when accelerating or a front geared hub motor? Given that the the torque from pedaling is applied to the ...
1
vote
1answer
120 views

Electric motor: rear, center or front?

I'm looking for an electric bike. I see motors available on rear, center, and more cheaper, a wheel with a motor to adapt to front. Any experience to help me to make a decision?
8
votes
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 ...
2
votes
1answer
86 views

E-bike rims: can I use them on my touring bike?

I am touring with my MTB, now for 4 months. I have been using really good Pacenti 29er rims, but just 2 days ago I cracked the rear one. I am carrying a lot of weight and Pacenti (after I contacted ...
1
vote
2answers
1k views

Shimano STEPS E8000 battery won't charge

I have a STEPS E8000 bike and wanted to make some improvements, like possibility to charge from any kind of CC/CV charger (even using solar panels when grid is not available) and to charge it to 41v ...
4
votes
1answer
336 views

How to extend a chain for a cargo bike?

I have a KMC x10e chain which is 162 links long on my Xtracycle electric cargo bike. The chain is worn and I am trying to replace it. From what I can tell it is available only in 136 links. Is the ...
2
votes
2answers
192 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 ...
-1
votes
1answer
173 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
votes
2answers
2k 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 three ...
-1
votes
1answer
77 views

E wheel needs an 8sp free wheel instead of cassette

My new electric wheel requires a free wheel set up. I have an 8 speed Shimano cassette which obviously won’t work. Can I find a free wheel that will be similar to my cassette? I realize I may have to ...
-1
votes
1answer
63 views

My e-bike wiring is damaged and I don't know where to begin [closed]

I was given a bike with an electric rear hub. I'm mechanically inclined but I've never had the opportunity to tinker with one of these. I'm fairly experienced with AC and DC electronics as well. If ...