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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65 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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1answer
78 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
103 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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54 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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1answer
89 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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83 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
116 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
111 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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37 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
358 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 ...
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1answer
54 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
47 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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86 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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89 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
54 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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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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1answer
86 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 ...
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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 ...
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1answer
250 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
1k 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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1answer
90 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
107 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
166 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
966 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
90 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
123 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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85 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
163 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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0answers
152 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
171 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
154 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
114 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
389 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
278 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
193 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
2k 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
308 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
307 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
410 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
282 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
201 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
3k 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
849 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
175 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?)
5
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1answer
549 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
56 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
942 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 ...