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

E-bike geometry

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

E-bike geometry

Old 09-01-19, 05:53 PM
  #1  
vmizera
Junior Member
Thread Starter
 
Join Date: Mar 2014
Location: Connecticut
Posts: 11

Bikes: 1982 Trek 720 1991 Trek 950 2003 Co-Motion Primera

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 3 Times in 2 Posts
E-bike geometry

Was looking at the Trek Verve+ 2 and its frame geometry. Holy cow!
68.5 degree head tube, 95mm of trail and a whopping 33mm of wheel flop.
Is there something about e-bikes that lend themselves to this highly unusual setup?
Any ideas on what Trek is thinking with this?
Just for comparison, my bikes hover around 40mm trail and 12mm of flop.
I can not imagine pedaling a frame with the Verve's numbers, at least not uphill.
vmizera is offline  
Old 09-02-19, 08:02 AM
  #2  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 3,833

Bikes: Schwinn Varsity

Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 1393 Post(s)
Liked 112 Times in 74 Posts
Hi trail and long wheel base better for high speed downhills, No?
trailangel is offline  
Old 09-02-19, 11:06 AM
  #3  
slomoshun
Senior Member
 
slomoshun's Avatar
 
Join Date: Dec 2011
Location: 98059
Posts: 182

Bikes: Treks and a Moulton

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 64 Post(s)
Likes: 0
Liked 2 Times in 1 Post
Originally Posted by vmizera View Post
...I can not imagine pedaling a frame with the Verve's numbers, at least not uphill.
End your turmoil and go test ride it.
slomoshun is offline  
Likes For slomoshun:
Old 09-19-19, 01:31 PM
  #4  
Joey21
Junior Member
 
Join Date: Oct 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked 0 Times in 0 Posts
I love the look of that bike. Not sure I want to own something as proprietary as that bike (battery, motor, limiters) but love the look. Go ride it for me!
Joey21 is offline  
Old 09-19-19, 02:11 PM
  #5  
chas58
Senior Member
 
chas58's Avatar
 
Join Date: Jul 2010
Location: Michigan
Posts: 3,820

Bikes: too many of all kinds

Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked 88 Times in 70 Posts
Isn't that kind of normal for mountain bikes? Long, low, slack. Hybrids too for that matter.

ebikes are mostly for people who don't ride regularly, may not have the best handling skills, and are best served with a stable bike. That may or may not describe the people around here, but a safe ride is pretty important for a low exertion commuter-hybrid.

for example, the Trek Fuel (Trail bike) has a trail of 11-12mm. That is kinda what you get with the trend with head tube angles less than 70 degrees.

Curious how you got a bike with 40mm trail? 57mm is ideal for an aggressive road bike. That is pretty much where the Madone ends up. Heck, even my track bike (74.5 head tube) ends up at 60mm trail.
chas58 is offline  
Old 09-20-19, 10:36 AM
  #6  
vmizera
Junior Member
Thread Starter
 
Join Date: Mar 2014
Location: Connecticut
Posts: 11

Bikes: 1982 Trek 720 1991 Trek 950 2003 Co-Motion Primera

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 3 Times in 2 Posts
Originally Posted by chas58 View Post

Curious how you got a bike with 40mm trail? 57mm is ideal for an aggressive road bike. That is pretty much where the Madone ends up. Heck, even my track bike (74.5 head tube) ends up at 60mm trail.
Swapped original forks for ones with more offset. Also went from 700c to 650b.
Resulted in much improved low speed handling.
vmizera is offline  
Old 09-25-19, 01:49 PM
  #7  
Dan1962
Junior Member
 
Join Date: Sep 2019
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Go for a test ride and your know if it is for you or not.
Dan1962 is offline  
Old 10-02-19, 08:12 AM
  #8  
Joey21
Junior Member
 
Join Date: Oct 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked 0 Times in 0 Posts
Did you ride it? What was your opinion? Looks nice but I fear I "need" the BBSHD power my current DIY bike has. I face some very steep hills.
Joey21 is offline  
Old 10-02-19, 08:41 AM
  #9  
2manybikes
Dog is my co-pilot
 
2manybikes's Avatar
 
Join Date: Jun 2003
Posts: 17,658

Bikes: 2 many

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1045 Post(s)
Liked 35 Times in 26 Posts
Originally Posted by Joey21 View Post
Did you ride it? What was your opinion? Looks nice but I fear I "need" the BBSHD power my current DIY bike has. I face some very steep hills.
How about a photo?
2manybikes is offline  
Old 10-02-19, 01:30 PM
  #10  
Joey21
Junior Member
 
Join Date: Oct 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked 0 Times in 0 Posts
Originally Posted by 2manybikes View Post
How about a photo?
My DIY ebike?
Joey21 is offline  
Old 10-02-19, 02:16 PM
  #11  
2manybikes
Dog is my co-pilot
 
2manybikes's Avatar
 
Join Date: Jun 2003
Posts: 17,658

Bikes: 2 many

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1045 Post(s)
Liked 35 Times in 26 Posts
Originally Posted by Joey21 View Post
My DIY ebike?
Yes.
2manybikes is offline  
Old 10-02-19, 02:25 PM
  #12  
Joey21
Junior Member
 
Join Date: Oct 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked 0 Times in 0 Posts


That is the one i bought from Jueshai. $1200. 48V/500W We added the fenders and rack. Swapped out the handlebars for something more comfortable from Origin8.
Joey21 is offline  
Old 10-02-19, 02:37 PM
  #13  
2manybikes
Dog is my co-pilot
 
2manybikes's Avatar
 
Join Date: Jun 2003
Posts: 17,658

Bikes: 2 many

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1045 Post(s)
Liked 35 Times in 26 Posts
Originally Posted by Joey21 View Post


That is the one i bought from Jueshai. $1200. 48V/500W We added the fenders and rack. Swapped out the handlebars for something more comfortable from Origin8.
Very nice.
2manybikes is offline  
Old 10-02-19, 03:00 PM
  #14  
Joey21
Junior Member
 
Join Date: Oct 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked 0 Times in 0 Posts



This is my DIY ebike. 2008 Trek 4300 (budget mtn bike). BBSHD unlocked 1500w motor. 48V/13.5AH battery. Lekkie 42T front sprocket. Shimano FC-E6000 175 mm crankarms b/c the Bafang arms didn't last one day. Twice. Used unicycle arms for a while successfully but they were a little too short for my taste and heavy. Thinktop6 pedals b/c cheap but they've lasted. 11-34T cassette (SRAM? Sunrace? Shimano?). Maybe testing 12-40T soon b/c so many hills here. Sailboat turnbuckle motor holder (Google for "Bafang Sailboat Turnbuckle").

Tektro cable disc brake upgrade. The V-brakes stopped okay but wore quickly. Wheelmaster replacement wheels which have been durable. Schwalbe Marathon tires. Original spring fork hanging in there just fine.

Knog-Oi bell. Planet Bike fenders b/c all-weather riding. Brighteyes headlamp (gets dark before I get off work part of the year). Cheap pouch for my phone. Asti cork touring grips. Good Tourbon canvas pannier bags. Aduro brand blinky lights at both ends aka cheap but work well. Unknown rack brand. Origin8 seat. INBIKE folding lock (usually parked in my office or my locked garage). Low crime here.

Looks a little like McGyver's bike or Batman's utility bike but everything is there for a purpose. Alot of it is budget Chinese stuff. As the original Trek stuff wore out I found a replacement that balanced function and price. Married man with kids ya know? I ride in the dark, it rains, I need to carry stuff, want my bum to not be as sore when I get home so - upgrades. 2500+ miles now.

Last edited by Joey21; 10-02-19 at 03:29 PM.
Joey21 is offline  
Old 10-02-19, 03:21 PM
  #15  
2manybikes
Dog is my co-pilot
 
2manybikes's Avatar
 
Join Date: Jun 2003
Posts: 17,658

Bikes: 2 many

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1045 Post(s)
Liked 35 Times in 26 Posts
Originally Posted by Joey21 View Post



This is my DIY ebike. 2008 Trek 4300 (budget mtn bike). BBSHD unlocked 1500w motor. 48V/13.5AH battery. Lekkie 42T front sprocket. Shimano FC-E6000 175 mm crankarms b/c the Bafang arms didn't last one day. Twice. Thinktop6 pedals b/c cheap but they've lasted. 11-34T cassette (SRAM? Sunrace? Shimano?). Maybe testing 12-40T soon b/c so many hills here. Sailboat turnbuckle motor holder (Google for "Bafang Sailboat Turnbuckle").

Tektro cable disc brake upgrade. The V-brakes stopped okay but wore quickly. Wheelmaster replacement wheels which have been durable. Schwalbe Marathon tires. Original spring fork hanging in there just fine.

Knog-Oi bell. Planet Bike fenders b/c all-weather riding. Brighteyes headlamp (gets dark before I get off work part of the year). Cheap pouch for my phone. Asti cork touring grips. Good Tourbon canvas pannier bags. Aduro brand blinky lights at both ends aka cheap but work well. Unknown rack brand. Origin8 seat. INBIKE folding lock (usually parked in my office or my locked garage). Low crime here.

Looks a little like McGyver's bike or Batman's utility bike but everything is there for a purpose. Alot of it is budget Chinese stuff. As the original Trek stuff wore out I found a replacement that balanced function and price. Married man with kids ya know? I ride in the dark, it rains, I need to carry stuff, want my bum to not be as sore when I get home so - upgrades. 2500+ miles now.
How is the motor attached to the drive train?
2manybikes is offline  
Old 10-02-19, 05:24 PM
  #16  
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 18,591
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked 72 Times in 62 Posts
I really don't like flop. I guess nobody stands to pedal anymore.
unterhausen is offline  
Old 10-03-19, 08:10 AM
  #17  
Joey21
Junior Member
 
Join Date: Oct 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked 0 Times in 0 Posts
Originally Posted by unterhausen View Post
I really don't like flop. I guess nobody stands to pedal anymore.
My balance isn't what it once was. Better to sit or hover over the seat.
Joey21 is offline  
Old 10-03-19, 08:16 AM
  #18  
Joey21
Junior Member
 
Join Date: Oct 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked 0 Times in 0 Posts
Originally Posted by 2manybikes View Post
How is the motor attached to the drive train?

She does a good job of running through the install process. Their channel has other good videos too.

Mine came from Lunacycle for warranty support reasons and postage cost reasons.

Prob could buy these things from Aliexpress directly but if anything goes wrong it might take a while to resolve.
Joey21 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
alan s
Touring
70
09-20-19 08:39 AM
pdlamb
Fifty Plus (50+)
16
04-18-19 03:27 PM
StephanieLyn
Touring
63
01-08-18 07:14 PM
Joe Bikerider
Northern California
5
08-02-17 08:21 AM
Courier84
Electric Bikes
4
12-17-15 11:21 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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.