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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41 views

E-bike: Low top speed issue (Sabvoton 72150 Controller)

I've recently upgraded my e-bike with a new controller and motor. I am getting a much lower top speed than expected and I wonder what is the issue/what I am doing wrong. The controller is set to &...
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3answers
3k views

Jump start electric bike?

I bought a Huffy electric bike but I don't have charger. The person at pawnshop where was bought said I can charge it with a car, like jump start.
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1answer
169 views

How to replace hub motor cable in e-bike?

The hub motor wires are cut from near the axle and looks like I can't repair it without completely replacing it. The motor is similar to this one on Ali Express. I failed to open the motor because ...
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2answers
68 views

Ebike throttle not working

Hi members friend got a dohiker ebike off ebay got it went for a ride came home and everything was fine... plugged it in to charge and then just stopped working pedal assist works and walking mode ...
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1answer
149 views

What type of ebike motor would work best for a 13” tire?

I want to drive a yard cart with a motor / battery. The cart has 13” wheels and weighs ~200 pounds loaded. I want to walk behind it, so I’ll need to be able to control the speed between 1-3 mph. ...
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1answer
78 views

20 inch ebike wheel motor exchange

Hi members eres something that I would like to know. .. I have a viking gravity 20 inch ebike wheel motor. If I exchanged/refitted this motor into say a 29inch wheel with all the same parts/kit ...
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1answer
103 views

Replacing an ebike's cable disc brakes with hydraulic disc

I have a Viking Gravity 250w 24v ebike. I'm just wondering if I can replace the braking system with a hydraulic type and what would happen to the wired braking safety feature? Would I have to retrace ...
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1answer
210 views

Why do my handle bars wobble from side to side?

I am a gramma with my first electric bike. When I ride I notice my handlebars and wheel tend to flip from side to side a lot. Is this because I am out of practice riding or does something need ...
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1answer
59 views

Fit a throttle to a pedal assist.bike?

Can I fit a throttle to a pedal assist Viking Gravity ebike? If yes what is needed other than a throttle? Thanks
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2answers
2k 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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3answers
1k 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 ...
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76 views

Why fit a usb on my ebike battery when not even connected

Id like to ask if anyone else has a viking gravity ebike with a internal frame battery pack which has a usb port included. Thing is i found out that it wasn't working even though its a brand new ...
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2answers
1k views

How to make a 10 year old electric bike battery work better?

I have taken a 10 year old electric bike out of the garage a few weeks ago after not having used it for multiple years. The bike is an elops 7 bought at decathlon with a geonaute battery. It still ...
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1answer
2k 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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5answers
6k 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....
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1answer
133 views

Best solution for additional (dual) battery for E-bike

I've marked a few possible places for additional battery mount. What do you think is the most reliable place to mount battery in terms of ergonomics of the bike? Also, how to ensure the parts are ...
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1answer
159 views

Where is the Shimano e-tube project light connection setting?

I'm trying to install some aftermarket hardwired lights to my eBike which is running a Shimano steps e5000 drive system (bike is a Reid urban+ ebike). I've verified that the lights work and are the ...
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41k 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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1answer
37 views

Eranger Montana Ladies E-Bike

Bike now 4 years old and battery not holding charge like when first purchased. Been n touch with Eranger cannot help said bike no longer being produced so now left with a £1100 bike and cannot buy a ...
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1answer
152 views

Looking for a waterproof electrical bicycle, is there such thing as ip68 for electrical bicycle?

I'm currently trying to find a bicycle brand that produces electrical bicycle with ip68/ip67 waterproof. Currently I could find any, google is not helping with my search and when I find something ...
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2answers
387 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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3answers
405 views

E-bike tyres on normal bike

I am shopping for tyres for my normal MTB. As I am mostly riding city, some gravel and light offroad I wanted something with good speed on road and some traction offroad. I found Schwalbe E-bike tyres ...
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1answer
158 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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2answers
255 views

Wind (nano-/pico-)turbines installed on bicycles for regenerative charging of batteries?

What is the smallest wind turbine available on the market that has been installed on a bicycle? and what about R&D or even conceptual wind turbine? This question is a follow up to question why are ...
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1answer
208 views

What does error code 30 signal on a Bafang electric unit?

A year or so back I bought an electric cargo bike online. The company I bought it from is since then no longer in operation. Since a few weeks every now and then the display shows a wrench symbol and ...
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6answers
6k views

Why are regenerative brakes uncommon on e-bikes?

Few electric bicycles have regenerative braking. Most quality e-bikes seem to be settling on mid-drive, which even makes regenerative braking impossible because there is a freewheel between the wheel ...
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6answers
501 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 "...
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1answer
90 views

Ebike going up a hill controller and motor gets hot causing a circuit break

Motor: satellite down gearing, 350 watts, rated @36 volts. Pack: 40.2 volt 10 series by 7 parallel. Lately the last 3 times I go up steep hill the battery wires, controller, and motor are hot to the ...
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1answer
142 views

Hybrid e bike suspension or no suspension

I am 64 and just taken up cycling again after a very long lay off. I ride purely for leisure and a mix of tarmac, canal tow paths and old railway tracks. Having looked at a number of e bikes i am ...
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1answer
93 views

Gear ratio formula to work out driven gear

I have been looking for a formula for two days now to calculate the diameter and how many teeth my driven gear needs. The driver gear is 14 teeth and RPM will be 7104 (Motor KV x Batt Voltage). This ...
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1answer
55 views

What tyres will fit this ebike rim? [duplicate]

Out of an impulse buy - I now have a complete ebike kit with battery. Originally I wanted this to be put on a mountain bike but upon seeing how little the rim is - I don't think any mountain bike ...
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0answers
149 views

Bosch eBike wiring diagram, where to find?

My RieseMüllerPackster80 refused to start today. I guess there is a bad connection somewhere but as all I could do was plugging the battery and computer in and out, I am not wiser whether cabling has ...
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2answers
126 views

Run from solar panel without batteries?

Is it possible to use solar panel(/s) as primary power for an electric bike, HPV or light velomobile (without batteries, mandatory assisted mode only) ? Are there any limitations or obstacles ? ...
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3answers
133 views

Any tuned E-bike with good support at high cadence high speed?

We bought a Cannondale Kinneto 2013 for my girlfriend and I also mounted a tuning kit that removes the 25km/h limit. I am a well trained cyclist and the goal would be to "accelerate" my ...
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0answers
40 views

Broke Spokes backwheel e bike [duplicate]

Four spokes on backwheel of Riverside 500 ebike just snapped when I was going uphill. Anyone else had this problem or know why it could have happened?
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3answers
2k 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/), ...
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11answers
7k views

Electric bike rear wheel spokes breaking

I have an electric bike with a 500w rear hub. The spokes have broken twice in the last month on the hub end of the spokes.The spokes are bent at the hub end and threaded. This is where they break. As ...
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4answers
2k views

Can I charge an ebike from another ebike battery?

I have a fiido d2s, and I love it. I'm not sure if I could upgrade to a bigger bike, because it fits so well in the back of my car and public transport. Anyway, it doesn't have a detachable/...
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2answers
14k 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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3answers
373 views

Best setup for long distance?

I’m looking to get a recumbent bike for travelling long weekends around Europe. I don’t know much about bikes and I’m looking at recumbent mainly for comfort reasons; I tried biking long trips on a ...
5
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1answer
86 views

Stromer S1 bottom bracket replacement

I have a soon-to-be-unusable bottom bracket on a 2016 Stromer St1. I believe the cause is bearing failure. I cannot find the exact replacement online (BB-7420: BC 1.37 x 24 T: Shell 73 : spindle ...
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1answer
77 views

help finding a battery replacement?

We bought a Watseka XP Cargo Electric Bicycle off amazon back in 2014 recently is hasnt been working and after further inspection we found that one of the batteries has failed (the one pictured below)....
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2answers
190 views

Canyon Spectral:ON different wheel size (29''/27.5'')

Canyon Spectral:0N boasts a different wheel size: it has a 29''/2.5'' as front wheel and the 27.5''/2.8'' back. This difference in wheel size should make the bike more nimble and the extra-wide tyre ...
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0answers
96 views

Electric bike chain skipping on smallest sprocket

I recently bought a BH Lynx 6 electric mountain bike and so far have been having struggles getting it riding well. After getting it here and setting it up I found that in the highest gear (smallest ...
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1answer
138 views

Increasing length of seatpost on a foldable bike

One of my bike is this little Dohiker 14" electric bike, but I actually pedal a lot when riding it, and the seatpost is a bit too short. It is about 50cm long, and I would need a few more centimeters. ...
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3answers
5k 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 ...
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3answers
1k 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 ...
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2answers
1k views

Can anyone tell me how pedelec sensor in PAS bicycles work?

While doing a literature review I found out about pedelec sensors (while googling some sensor to find torque applied by the rider). Is anyone who has used it willing to share the mechanism and can you ...
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1answer
88 views

i used a secondhand e bike kit but i cant get it to work [closed]

guys I put a secondhand e bike kit on my bike but it doesn't want to work its a 36volt 22amp the battery has full charge at out put of 42 volts hooked it all up push the thumb control nothing i have ...
2
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1answer
62 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 ...