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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20 views

Tips for packing electrical cables near Giant Quick-E bottom bracket

I've been having major trouble getting all the cables back in after removing the bottom bracket electric motor from my Giant Quick-E. It's a rat's nest down there. There are cables coming from the ...
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0answers
19 views

Second hand e bike suppliers

I am looking for second hand e bike suppliers which can support my business with minimum 200 e bike per year.
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50 views

Upgrading Xiaomi HIMO C20 battery [migrated]

Does any one know what is the charger port is for Himo C20 Ebike battery? I ordered mine it's on its way now I couldn't find the information online. Also I was wondering if I can add this battery to ...
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1answer
110 views

E-bike battery charger making horrible noises, only works certain outlets?

I had posted on endless sphere but since then I have possibly made a little discovery. Tldr; I have a fresh 48v battery and charger around less than 3 months old. Very intermittently when trying to ...
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1answer
92 views

Ebike brake lever cutoff switch / interrupt switch : How does it work?

When pressing the brake lever on my ebike the bldc motor controller (aka ebike controller) 'cuts power' to the motor until the brake lever is released again/sensor is deactivated. I would love to know ...
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22 views

how to use sensored BLDC as stepper motor [migrated]

I am making a huge line following robot and using arduino & sensor BLDC motor salvaged from Segway. The problem is that I am not able to control the motor properly. If PWM signal is low the motor ...
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1answer
85 views

Will a 73 inch long electric bike fit with 28 inch wheels

2 Question. 1st. I am looking into buying a electric bike it is 73 inches from tire to tire will it fit in a muni bike rack 2nd will 28 inch wheels fit on a muni rack Thank you
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1answer
93 views

eBike winter battery power

My Bosch eBike has dual batteries which I usually ride with one battery. I feel like as the weather drops to freezing the bike power has dropped off slightly and when I ride with the second battery ...
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2answers
109 views

Raleigh Motus Tour 2018 - Chain electric bike replacement

I have to replace the chain of my Raleigh Motus Tour 2018. Do anyone knows the specify chain I have to buy? Because it is a electric bike I am almost sure that I should buy the KMC "e9 EPT for e-...
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1answer
746 views

Fiido D2: shock absorber broken

I bought almost an year ago a Fiido D2 bike. I use it everyday for my commute to work and unfortunately it broke. I brought it to a bike repairer and he said that there's nothing he can do. The only ...
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6answers
2k views

Feasibility of keeping an Electrical Bike in poor (wet) storage conditions

I'm looking to buy an ebike for my partner, and have been researching how best to store them to protect them from the weather. We live in a south-facing house in a New Zealand city notorious for ...
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0answers
75 views

What's the largest biking forum on the internet? [closed]

While stackexchange is often great for specific questions, I'm looking for the biggest (english-language) biking forum on the internet. To be more specific looking for info on e-bikes and cargo bikes, ...
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1answer
111 views

Which kind of electric-assist bike would be appropriate?

I have a regular bike that I wanted to use to commute to my work (~12km/7mi) and back. In practice it turned out that while it was OK for one way, at my current level of fitness, I felt rather too ...
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69 views

Bicycle pedaling resistance on single speed e-bike

Recently, I've bought an ebike that is about 2 months old now, I've maybe gotten 100-150 miles off of it as a daily commuter. When I pedal, it would have a lot of opposing force or friction, and ...
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3answers
153 views

Is it possible to build a bicycle with magnets that somehow will ease required muscle power? [closed]

Sometimes, when I have magnets in my hands, I think - maybe it is possible to integrate this magnets into wheels or chain and move using their passive energy, without muscles at all?
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137 views

Help identifying this $25 ebike

I picked up this folding bike for $25 thinking I would google it and have all the info I needed to get it functioning. Any help finding documentation would be great, what kind of battery can I plug ...
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2answers
162 views

Who grants ebike-ready certifications for tires (aside from manufacturers)?

I have tires with (among others) official-looking decals implying (with varying wording and symbology) that they are "ebike-ready" (EBR) and rated to speeds of either 25 km/h or 50 km/h. I recently ...
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1answer
85 views

Proper dedicated ebike frame with motor in the middle or the diy swap the wheel approach

I'm interested in converting my carpe 40 into an electric bike. I was wondering what are the pros and cons between having a dedicated ebike frame vs a DIY approach that involves a new front or rear ...
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3answers
74 views

Identification of non-standard frame feature and suitability of frame for mid-drive e-bike conversion

My question comes in two related parts: firstly, what is the piece of folded, drilled metal projecting rearwards from the lower bracket in the photo above? Secondly, does this piece of metal have ...
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4answers
2k views

Suspension compromise for urban use

I ride an eBike in New York City. About 80% of the roads I ride are relatively smooth and 20% pretty bumpy. On my non suspension bike the 80% is great but the 20% is a bit painful. I understand ...
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0answers
148 views

Controller and throttle wiring question [closed]

I'm in the process of wiring my key lock throttle to the controller and coming up at a loss for how to wire them. I've scoured the internet and haven't found an answer that helps me. I know I'm ...
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2answers
124 views

E-bike speed limit in Ontario, Canada

In Ontario, Canada, may I pedal my e-bike up to the road's posted speed limit without motor assistance? Like if my bike does 31 mph but the speed limit is higher, can I travel to that speed without ...
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3answers
165 views

What features does a mountain bike need to be converted to an ebike?

I'm looking convert a mountain bike and convert it to electric with a rear hub kit. I am wondering what features I should look out for to make this easier: Is there any way to keep the cassette that ...
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1answer
808 views

Shimano Steps error E010 and W013 [closed]

After the last update of the system, which allows optimizing the ECO option with three levels of assistance, Low, Medium and High, in the last 2 trips with the Medium option, several errors have ...
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2answers
196 views

E-Bikes - Is it bad for the bike to run out of battery?

Today, I ran my e-bike out of battery for the first time. Interestingly enough, the bike didn't actually turn off, but automatically moved the mode from "Eco" (light pedal assist) to "Off" (no pedal ...
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2answers
114 views

Can I get an ebike with a 500 watt motor in Australia? [closed]

I'm a bit on the heavy side, so I'd like to purchase an ebike with something a little gutsier than the usual 250 watt motor so that I can go up hills. Can these be purchased in Australia at all?
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1answer
325 views

To what extent should I insulate an electric bike battery during winter?

For temperatures between 0 F and 32 F, to what extent, if at all, should I insulate electric bicycle batteries? I have read that they do not like temperature extremes. Should I wrap a battery in 1 ...
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2answers
150 views

How can I troubleshoot battery issues on an electric bike?

I've got an electric bike with a GWA Easi-A36 battery (10.8Ah, 33.8V). The bike has a GWA electric motor. When I turn the motor on (on the handlebar "computer"), the battery indicator tells me the ...
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1answer
105 views

Fitting a display to an ebike kit

I have an voilamart ebike kit, https://www.amazon.com/dp/B07Q7FJ8ZY/ref=sspa_dk_detail_3?psc=1 Is there an LCD display I can add to this kit, I've had my eye on this https://www.amazon.com/gp/product/...
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5answers
2k views

What can cause the front wheel to lock up when going over a small bump?

I was going over a bump. When the front wheel hit the bump, it suddenly stopped moving, the rear wheel lifted off the ground, and I was thrown face-first onto the road. I sustained injuries to the ...
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2answers
369 views

E-Bikes and Kid Trailers?

Anybody know if you can attach a kid trailer (example: https://www.buybuybaby.com/store/product/burley-bee-bike-trailer-in-yellow/1061738171?skuId=61738171) to an EBike? I have a huge hill to go up to ...
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11answers
8k views

Cycling to work - 30 mile return

I have recently made the decision to commute to work via bike. It’s about 14 miles each way (so just under 30 miles return). I initially started on my old bike but it clearly wasn’t really appropriate ...
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1answer
137 views

1999 Giant Lafree Sport ebike charger

I have a 1999 Giant Lafree Sport ebike which uses a 24 volt lead acid battery. Does anyone know how to bypass the battery management system/gauge? (Or have a battery box/charger for this bike?)
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1answer
190 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 ...
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1answer
54 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 ...
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4answers
867 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 ...
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1answer
413 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 ...
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4answers
345 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 ...
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1answer
96 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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1answer
101 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 ...
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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 ...
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1answer
118 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 ...
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2answers
147 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 ...
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2answers
1k 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 ...
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2answers
64 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 ...
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3answers
2k 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 ...
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1answer
312 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,...
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1answer
104 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 ...
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1answer
136 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 ...
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1answer
108 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 ...