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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Standards in e-bike electrics

The research I've undertaken seems to lead to this statement, "There are no standards in e-bike controller wiring", it's a free for all! My question is: Is there any organization pushing for ...
AndrewB's user avatar
5 votes
4 answers
885 views

E-bike battery placement on the seat tube

when reading articles about location of battery placement on e-bikes, i don't seem to find seat tube being discussed anywhere. This is however exactly where Ecoride, a Swedish e-bike brand, places ...
InternazionalIV's user avatar
1 vote
2 answers
81 views

Does attaching a trailer to a dropper post damage it?

I would like to purchase a trailer for my new bike. It is a Canyon Spectral:ON CF7 with a dropper post/telescopic saddle. My goal is to go shopping for groceries with my bike. Now, I had a trailer for ...
eckh_ma's user avatar
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0 votes
2 answers
44 views

fried e-bike controller. replaced with stock part but still doesn't work

I fried my e- bike controller (jasion) but when I replaced it my bike still doesn't work. I have double checked all the connections and think that maybe the display is the problem. HELP!
Max Downs's user avatar
4 votes
2 answers
165 views

Ebike-pedalling too fast

I have a Basis Osprey folding bike. It has a rear wheel hub and small wheels as per most folding bikes. It was a gift so please don't suggest I bought the wrong bike. When going along in full power on ...
Stephen Hailes's user avatar
2 votes
2 answers
91 views

Finding a battery for an old e-bike

I have an old Raleigh stow e way folding bike e-bike but sadly the battery has died. I’ve tried to replace it but can only find used ones on eBay which might not last long. Battery is labelled: Li-ion ...
Debbie Perry's user avatar
1 vote
0 answers
32 views

Choosing a battery for my motor/controller

I'll keep this concise. While I'm pretty overwhelmed with all the reading I've been doing, I believe I'm close to making a decision and need a sanity check on the following: I purchased a Bafang ...
deefofum's user avatar
0 votes
1 answer
60 views

E-bike stuttering up hills

Electric bike keeps stuttering going up hills only happened after a ride out in the rain could this have something to do with it
Barrie's user avatar
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1 vote
1 answer
77 views

1999 Giant Lafree Electrik, Only the diagnostic red light comes on. What is the problem?

When I turn the bike on, the five lights that indicate charge status flash red and then go out with only the red diagnostic light remaining lit. I ran the diagnostic checks and all items in the check ...
Bill's user avatar
  • 11
1 vote
0 answers
31 views

Need help with Columbia Lauderdale electric mountain bike

I was recently riding my bicycle, and hit a speed bump when it turned off under me. I checked out the bike and in the front motorhub there was a silver wire coming out of the bolt part. It looks sort ...
Gino Jinx Torres's user avatar
2 votes
1 answer
125 views

Replacing Tektro MD-M280

I have a Lectric 2.0 ST ebike and it seems it is hard to find a good replacement for its Tektro MD-M280 calipers. I was wondering if the Tektro MD-C550 could be better as this model is dual piston but ...
Jose's user avatar
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2 votes
3 answers
163 views

How much protection would a motorcycle jacket provide in a low speed, ebike accident?

How much protection would a motorcycle jacket with CE certified body armor provide in a sub 20mph/32kmh, ebike accident? I'm particularly interested in the following scenarios: A car running a stop ...
Peachy's user avatar
  • 125
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0 answers
38 views

Has anyone tried the ElectricBikeWheel 350 w internal battery product?

Looking for a Bare Bones ebike conversion system. I'm very interested in the electric bike wheel 20 inch 350 w front hub motor that is completely self-contained. It seems to be exactly what I'm ...
Michael's user avatar
  • 71
3 votes
2 answers
210 views

Fitting an additional rear light to Bosch ebike

I'd like to increase my visibility on my Tern GSD, particularly in the winter months, by adding a second rear light. Rather than using a light that requires charging, I was hoping to connect another ...
Tom White's user avatar
1 vote
0 answers
51 views

I need a battery for a Bulls Alpine Hawk bike that I bought used [closed]

I bought a Bulls bike and the battery would take an OK charge. After several months I charged the battery with the cables provided. I took a 15 mile ride and my average speed was 11mph. I'm now trying ...
Renee Woodard's user avatar
1 vote
0 answers
41 views

Locking option for a 100mm quickrelease?

I recently got a Ride1Up LMT'D, and it came with a quick release for the front wheel. According to their support, it's 100mm wide, and I can't seem to find a 100mm pinhead or similar product :( Any ...
Yuvi's user avatar
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3 votes
2 answers
148 views

Cruiser handlebar rotating because clamp not strong enough

My new cruiser handlebars rotate no matter how much I tighten the clamp on my electric bike. The bike is a Lectric XPremium: https://lectricebikes.com/products/xpremium-black Here is the handlebar: ...
jon_le's user avatar
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0 answers
64 views

Two click sound when pedaling, chain delayed engagement

Hi All! New owner of Giant Explore E+ here. Just into the first 100 miles. I noticed my bike is making a clicking sound when I start pedaling from static or freewheeling. This happens both when motor ...
rigor's user avatar
  • 1
3 votes
1 answer
111 views

What kind of Julet cut off plug is this?

I own a NCM Moscow that uses a Tektro EL555-RT with this Julet 2pin connector I would like to replace the braking system with a hydraulic one however I simply can't find brakes with this connection, ...
Sandro Antonucci's user avatar
3 votes
1 answer
602 views

Full face helmet on E-bike

I am thinking to try a full face helmet on my E-bike for cold weather commuting. The main reasons would be the ones people consider for using the skiing helmet (a summer optimized helmet is too cold ...
nightrider's user avatar
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1 vote
1 answer
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I have a still boxed Viribus 26" rear-wheel ebike kit - I'd like to remove its pre-fitted gear cogs and fit wheel with motor to front forks instead

...the Viribus kit's motor(kit bought via Amazon) is of the slim but wide-diameter kind. My eyes and calipers suggest to me that if the gear cogs are removed the motorised rear wheel axle should quite ...
Paul Govan's user avatar
5 votes
3 answers
97 views

Best type/designation of 2-strand wire to buy in bulk for generator and ebike lights

As a US-based shop mechanic, every time I try to buy 2-strand wire that can do the same things as what comes with generator and ebike lights, it gets deceptively complex. A lot of what's out there ...
Nathan Knutson's user avatar
1 vote
1 answer
59 views

Can I add a front shock or suspension to my Retrospec e-bike?

Is there a way to add a front shock/suspension to my Retrospec Valen Rev bike?
Judit's user avatar
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2 votes
3 answers
1k views

E-bike motor stopping momentarily during steep climbs

I have a Batavus Zonar 2020 e-bike, Yamaha motor, 10 gear cassette, 5500km of use. Recently the motor has stopped working momentarily during very steep climbs - it just shuts off for a second then ...
Amarth's user avatar
  • 171
-2 votes
1 answer
123 views

Carrera impel IS1 scooter

customer brought in carrera impel IS1 scooter and its pretty new. Max speed should be 15.5mph at the moment it goes just under 10mph. New motor, new ECU been fitted. Is it something to do with the ...
Virmantas's user avatar
2 votes
1 answer
214 views

Using 4 inch tube for 3 inch wheel

fellow bicyclists. I purchased an e-bike (Clou Tumbler) and its back wheel is 20x3.0 I overpumped air into it and the tube blew up, so I've been trying to find a replacement, only to realize its ...
Sergei's user avatar
  • 21
3 votes
3 answers
1k views

Find replacement battery for this e-bike

My ebike battery totally died today. I can't find the model number for the battery as it is not written anywhere. Here are the pictures:
user1034912's user avatar
0 votes
2 answers
828 views

SHIMANO STEPS(VOODOO ZOBOP 2019) ERROR E014 best solution?

customer dropped his voodoo zobop E7000 2019 bike, previously had E013, after huge firmware update E013 changed to E014 error code, apparently ECU not receiving signal from the battery...!? Would ...
Virmantas's user avatar
3 votes
2 answers
386 views

How can I increase ebike drivetrain reliability?

I'd like to improve reliability and have fewer problems with my drivetrain. What more can be done? I have an electric bike. I only ever use the six smallest sprockets on the 12-speed cassette, even ...
Tom Brossman's user avatar
1 vote
1 answer
371 views

Luckeep ebikes problems

Anyone know why my ebike would be only going like 8 miles an hour? Or how can I check torque sensor to see what's wrong? It has worked fine since I got it but after last charging it today when I got ...
Jerome Cantrell's user avatar
1 vote
1 answer
307 views

Which mid drive motors use the same frame interface?

One concern with mid drive e-bikes is that if the motor breaks in ten years, probably there is no exact replacement available. But do the manufacturers keep the same interface for their different ...
Nobody's user avatar
  • 1,780
5 votes
1 answer
370 views

Opening up a geared hub motor

I have a 10 year old eWind Classic, and the hub motor makes horrible noises when under high load. It used to be silent. So I want to replace the planetary gears and bearings. Printed on the hub motor ...
Bram's user avatar
  • 327
3 votes
2 answers
520 views

Pros and cons of retrofitting a pedelec vs. buying a built-in pedelec

I'm considering to buy a pedal-assist electric bike with a mid-drive motor. I'm worried that if and when the drive unit fails, I might have to replace the entire bike, such as indicated in this ...
gerrit's user avatar
  • 3,877
5 votes
2 answers
320 views

How servicable are older e-bikes?

I am considering to purchase a bicycle that includes an electric assist with a Shimano E6100 engine. I have not owned any bicycles with electric assist before, and I'm worried about serviceability. ...
gerrit's user avatar
  • 3,877
16 votes
8 answers
2k views

Is a dropper post a good solution for sharing a bike between two riders?

We have an e-bike with a step-through frame that's shared between two riders with fairly different heights (5'8" and 6'2"). It's used for commuting, kid-toting, and general short-mileage ...
segfault's user avatar
  • 161
3 votes
1 answer
66 views

Front hub motor makes clacking noise only when nut tightened

I have a Bafang SWXK2 e-bike front hub motor. It has been use for 7 years, about 10 000 km ridden and has worked well so far. But now it is making a clacking noise. Symptoms: Clacking noise ...
jpa's user avatar
  • 1,857
25 votes
4 answers
2k views

What characterizes a future-proof ebike drive system?

Ebikes had their origins in modular drive systems that were assembled by enthusiasts and specialty companies choosing their own motors, batteries, battery controllers, motor controllers, and displays. ...
Nathan Knutson's user avatar
-1 votes
4 answers
135 views

Provide 220v to motorhub 36v 500w using a voltage regulator

The idea is to solar power a bike without battery using a grid-tie inverter that provides 220v and then regulate voltage to link directly with motorhub. Possible ? Risky? Dumb? Thanks for your answer!
Javi's user avatar
  • 1
4 votes
1 answer
192 views

Why do my Urbanbiker Viena electric bike batteries keep failing?

Around late 2019, I bought an Urbanbiker Viena new off Amazon for my daily work commute (around 15km/day at that time, now it’s a bit lower at about 10km/day). After about 4000km, my (first) battery ...
breversa's user avatar
  • 143
8 votes
6 answers
2k views

Using an e-bike as part of an endurance training?

I recently bought an e-bike and use it much more than my conventional "fun bike" (still need to do some maintenance on it), and was wondering how complementary it could be for endurance ...
Rеnаud's user avatar
  • 20.3k
2 votes
1 answer
225 views

Is it safe to charge my ebike lifepo4 battery this way?

I have an 8S LiFePO4 battery pack for my ebike project which I tried to charge using my suspicious lithium battery charger. The charger applied a voltage slightly higher than the battery voltage at ...
Akshat Sharma's user avatar
1 vote
0 answers
50 views

Currie mid-drive Pedal assist works sporadically

I have a Raleigh Route with a Curry Electro Drive trans x 350 watt pedal. Assist only motor. Pedal assist starts and stops almost immediately over and over the entire time I ride. Sometimes it doesn't ...
Parrish Shane Ward's user avatar
8 votes
2 answers
6k views

Where is the speed sensor on my e-bike?

The speed indication on my ebike is acting up - most of the time it's showing a correct reading, but it occasionally drops to impossibly low values like 2 km/h for a few seconds while riding, then it ...
user4520's user avatar
  • 563
1 vote
1 answer
538 views

How to install a Bafang brake sensor on a road bike with drop bars and V brakes?

I'm planning to install an e-bike kit on a road bike with drop levers. You must install a sensor for the motor to stop providing power during braking. However they are all used for normal brakes. ...
nammerkage's user avatar
5 votes
3 answers
400 views

Electric bicycle frequently stops working when slope is too high. Cannot find notice

I use my mom's no-name electric bicycle for my daily commute. It is only 3-4 kilometers but there is a big slope. The bicycle's brand and model is Opus E-MOTION, but I cannot find anything online ...
C. Crt's user avatar
  • 151
5 votes
1 answer
966 views

How do I fit an e-hub motor axle that is too big?

I am converting my wife's Giant aluminium frame bike to electric by fitting a rear hub motor. The problem that I have encountered is that the e hub motor axle is much bigger than the original wheel. I ...
Tigertone's user avatar
4 votes
1 answer
360 views

eBike torque sensors: Are hub systems capable of the same ride feel as mid-drive?

There are two basic types of ebike controller - cadence or torque sensing. Typically mid-drive ebike systems use torque sensing to control the motor, and cheaper hub drive systems often use cadence ...
SamA's user avatar
  • 2,696
2 votes
1 answer
221 views

MTB rear triangle specs for given frame / e-bike build

A used 27.5 19" e-bike frame (Bosch motor+battery model) (only front half) is advertised under the brand "Kilimanjaro e-tec 2.0", whatever. Its rear triangle, however, is missing and I ...
bozobkr's user avatar
  • 21
1 vote
1 answer
206 views

My bike has a 10 speed cassette. MTX hub motor takes 9 speed cassette can I remove last cog of my cassette without issues?

I need some advice. I have a Giant Anthem 2012 dual suspension bike. And want to put a 1500 watt 26" MTX cassette type rear hub motor onto it. I believe the MTX wheel can take up to a 9-speed ...
Chris Jamieson's user avatar
3 votes
1 answer
554 views

Does changing a chainring on a e-bike requires a "firmware change"? (setting or update)

I noticed an interesting "contradiction" in the manual of an e-bike: on one hand it states that the frame can accomodate chainrings between 30T and 44T, but on the other hand in another ...
Rеnаud's user avatar
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