Go Back  Bike Forums > Bike Forums > Electric Bikes
Reload this Page >

Motor or motor controller

Electric Bikes Here's a place to discuss ebikes, from home grown to high-tech.

Motor or motor controller

Old 06-20-17, 02:45 PM
Thread Starter
Join Date: Jun 2017
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Motor or motor controller

What is a good way to determine if motor or motor controller is causing the symptom of motor just stuttering/jerking for a few seconds then nothing. Can I substitute 3 resistors for motor and expect pulses to appear across resistors when
applying throttle?
vica is offline  
Old 06-28-17, 08:36 AM
Senior Member
Join Date: Jun 2017
Location: Irving TX
Posts: 85

Bikes: Kent DIY Road Ebike build

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
Likes: 0
Liked 12 Times in 8 Posts
Could be a loss connector. It is probably the battery. If the battery is not charging correctly it could cause the same problem. I have seen a bottle battery that broke like this and it caused the same problem.
Attached Images
File Type: jpg
image_2556.jpg (96.9 KB, 56 views)
CigTech2 is offline  
Old 07-06-17, 05:02 PM
Senior Member
Join Date: Mar 2012
Location: NE oHIo
Posts: 1,060

Bikes: Specialized, Trek, Diamondback, Schwinn, Peugeot

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 153 Post(s)
Liked 49 Times in 41 Posts
Hall effect sensrs in the motor can also be a possible problem.

speedy25 is offline  
Old 07-18-17, 12:34 AM
Junior Member
Join Date: Jul 2017
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
what about inside bike?
seysom is offline  
Old 07-27-17, 09:25 PM
Junior Member
flxbike's Avatar
Join Date: Jul 2017
Posts: 13

Bikes: FLX

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
No matter how urgent the problem and motor failure can cause some very urgent problems always develop a plan of attack before you start repair work.
flxbike is offline  
Old 07-30-17, 07:24 AM
Join Date: May 2017
Posts: 158
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 43 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have never seen anyone suggest the method you are proposing. Never.

It would be useful to know something about the type of motor, controller, and battery, it's age, and usage pattern, whether it is brand new, suddenly developed this problem out of the clear blue sky, or if, maybe, just maybe, something unusual or slightly different happened to the kit, which WAS working, and afterwards, is NOT working.

There are a large number of possibilities, without additional information, any guess is a shot in the dark. It is quite possible, even likely, that a careful reading of the questions I have posed and a thorough set of answers will narrow down the field considerably.

The suggestion or implementation of ANY diagnostic test or possible solution without that information is sheer foolishness.

The absolute most common cause of ebike problems, including ones that sound very much like yours, is either a loose or broken connection, or a torn, melted, or otherwise damaged wire. Careful visual inspection can be performed without ANY CHANGES at all to the system, no disassembly, little chance for further damage to occur.
Nelson37 is offline  
Old 10-12-17, 08:47 AM
Junior Member
Join Date: Oct 2017
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
In my opinion, the motor is better
Melissa35 is offline  
Old 10-12-17, 10:35 AM
Senior Member
Doc_Wui's Avatar
Join Date: Jul 2015
Location: Chicago Suburbs
Posts: 1,376

Bikes: GT Transeo & a half dozen ebike conversions.

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 334 Post(s)
Liked 252 Times in 177 Posts
Is this a new install of a kit, or it it an existing bike that had been running properly earlier?

Is battery up and charged?

If hub motor, will wheel spin freely in either direction with and without controller powered up?
Doc_Wui is offline  
Related Topics
Thread Starter
Last Post
steve mareno
Electric Bikes
07-17-21 11:28 AM
Electric Bikes
05-24-20 10:54 PM
Electric Bikes
12-26-17 06:27 AM
Electric Bikes
03-10-10 11:19 AM
Electric Bikes
12-15-09 12:39 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.