Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Easy hydraulic brake question...

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Easy hydraulic brake question...

Old 06-30-22, 02:11 PM
  #1  
67tony 
Senior Member
Thread Starter
 
67tony's Avatar
 
Join Date: Feb 2012
Location: Williamsburg, VA Sebastian, FL
Posts: 1,315

Bikes: 1987 Centurion Ironman Master, 1992 Koga Miyata Exerciser, 1992 Schwinn Crosscut

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 189 Post(s)
Likes: 0
Liked 130 Times in 75 Posts
Easy hydraulic brake question...

I understand the fluid line, but why is there also an electrical line coming out of my Tektro Zoom brake levers?
67tony is offline  
Old 06-30-22, 02:16 PM
  #2  
Polaris OBark
Dirt Roadie
 
Polaris OBark's Avatar
 
Join Date: Jan 2022
Posts: 1,212
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 638 Post(s)
Liked 811 Times in 490 Posts
Electronic braking. It is the latest New Thing.
Polaris OBark is offline  
Old 06-30-22, 02:18 PM
  #3  
Polaris OBark
Dirt Roadie
 
Polaris OBark's Avatar
 
Join Date: Jan 2022
Posts: 1,212
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 638 Post(s)
Liked 811 Times in 490 Posts
My guess is that it is for an e-bike, so that the motor cuts out when you apply the brakes.
Polaris OBark is offline  
Likes For Polaris OBark:
Old 06-30-22, 02:38 PM
  #4  
67tony 
Senior Member
Thread Starter
 
67tony's Avatar
 
Join Date: Feb 2012
Location: Williamsburg, VA Sebastian, FL
Posts: 1,315

Bikes: 1987 Centurion Ironman Master, 1992 Koga Miyata Exerciser, 1992 Schwinn Crosscut

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 189 Post(s)
Likes: 0
Liked 130 Times in 75 Posts
Originally Posted by Polaris OBark View Post
My guess is that it is for an e-bike, so that the motor cuts out when you apply the brakes.
That's it!

I feel like a noobie but, hey, when it comes to disc brakes...I AM a noobie!
67tony is offline  
Likes For 67tony:
Old 06-30-22, 04:41 PM
  #5  
Polaris OBark
Dirt Roadie
 
Polaris OBark's Avatar
 
Join Date: Jan 2022
Posts: 1,212
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 638 Post(s)
Liked 811 Times in 490 Posts
It might have a similar functionality for shifting, especially if it is mid-drive.
Polaris OBark is offline  
Old 06-30-22, 10:32 PM
  #6  
alcjphil
Senior Member
 
alcjphil's Avatar
 
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 5,001
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1397 Post(s)
Liked 978 Times in 592 Posts
Actually, the wire connects to the controller to activate regenerative braking
alcjphil is offline  
Old 06-30-22, 11:22 PM
  #7  
Leisesturm
Senior Member
 
Join Date: Jul 2005
Posts: 5,154
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 1942 Post(s)
Liked 414 Times in 299 Posts
Originally Posted by alcjphil View Post
Actually, the wire connects to the controller to activate regenerative braking
Maybe. I am trying hard to think of the production e-bike that has regen as an OEM feature. It is certainly 'possible' that a set of Tektro e-brake levers might be attached to a system with regen, but it is far more likely and typical that the electrical line from the brakes to the controller senses braking effort for the reason given earlier: motor cutoff, because having the motor remaining powered while braking is wasteful, if not possibly dangerous. The momentary ducking of motor energy for smooth shifting is usually triggered by electric lines coming directly from the shift lever(s) or the shift cable(s).
Leisesturm is offline  
Old 07-01-22, 05:12 AM
  #8  
hokiefyd 
Senior Member
 
hokiefyd's Avatar
 
Join Date: Feb 2017
Location: Northern Shenandoah Valley
Posts: 3,860

Bikes: '18 Redline Zander, '14 Surly Pugsley, '97 GT Vantara, '97 Trek MultiTrack 750, '70 Peugeot UO-18 Mixte

Mentioned: 33 Post(s)
Tagged: 0 Thread(s)
Quoted: 1325 Post(s)
Liked 605 Times in 456 Posts
Some systems may offer regen and some systems will simply cut the motor power, but the brake lever function is the same in any case -- it's simply a switch to tell the e-bike control unit that the rider has activated the brake. Depending on the bike, the control unit may go through several logic steps to determine what to do next, but the answer to the question posed in the original post is the same: it's an electrical switch used in e-bike applications. It can be ignored (and sometimes even removed from the lever entirely) if used in a conventional bike application.
hokiefyd is offline  
Old 07-01-22, 08:08 AM
  #9  
67tony 
Senior Member
Thread Starter
 
67tony's Avatar
 
Join Date: Feb 2012
Location: Williamsburg, VA Sebastian, FL
Posts: 1,315

Bikes: 1987 Centurion Ironman Master, 1992 Koga Miyata Exerciser, 1992 Schwinn Crosscut

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 189 Post(s)
Likes: 0
Liked 130 Times in 75 Posts
The bike is an Aventon Pace 500, about a year old.
Entry level price of $1,400 but pretty decent quality in my opinion.
No regenerating braking system, for sure.
67tony is offline  
Old 07-01-22, 08:22 AM
  #10  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,782

Bikes: Schwinn Varsity

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1884 Post(s)
Liked 655 Times in 383 Posts
Originally Posted by alcjphil View Post
Actually, the wire connects to the controller to activate regenerative braking
That's some good bait!
trailangel is offline  

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


Thread Tools
Search this Thread

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

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.