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

Front Hub Motor on a Cargo Bike?

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

Front Hub Motor on a Cargo Bike?

Old 05-26-21, 06:46 PM
  #1  
The Big Wheel
Oooooooofffff SALESMAN!
Thread Starter
 
The Big Wheel's Avatar
 
Join Date: Jul 2007
Location: Local trails
Posts: 294
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked 5 Times in 3 Posts
Front Hub Motor on a Cargo Bike?

I have a Yuba Mundo cargo bicycle that I am going to be turning into an electric bicycle. I first wanted to buy the BBSHD kit for it but decided not to because I don't want to deal with the maintenance. My next plan was to buy a rear hub kit but I read about some issues: 1) The rear axle is 14mm and most axles are 10mm or 12mm so I would have to deal with that and 2) I would have to fabricate some kind of torque handles.

So this leads me to the simplest solution, which would be a front hub kit. I know most people prefer front hubs the least, which I can understand, but this will be going on a cargo bike, not a mountain bike. 99% of the time I am riding it is in a straight line, plus the bike is like 7 feet long so I don't think it will have a major effect on the bike.

Anyways, what do you guys think? And should I go with geared or direct drive? From my understanding it would have to be direct drive? Since there is no way to change gears on the front wheel, it's all done on the rear wheel.
The Big Wheel is offline  
Old 05-26-21, 11:02 PM
  #2  
2old
Senior Member
 
Join Date: Jul 2014
Location: socal
Posts: 2,873
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 530 Post(s)
Liked 310 Times in 226 Posts
Geared vs direct drive does not refer to the bike's gears. A direct drive motor has one moving part, the hub (discounting bearings or bushings). A geared motor has gears INSIDE the motor (read the tutorial at ebikesca). IMO a front hub is a great application for a cargo bike.It has a lot of good features, including, but not limited to, two-wheel drive, better weight balance (usually) and good traction since you'll probably have a front rack.

Last edited by 2old; 05-27-21 at 10:31 AM.
2old is offline  
Old 05-27-21, 12:48 AM
  #3  
Rick
Senior Member
 
Join Date: Feb 2007
Posts: 653
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 284 Post(s)
Likes: 0
Liked 136 Times in 89 Posts
As suggested read up on the different kinds of hub motors. The geared hub motors have a reduction set. They are usually lighter and the motor turns 5 times faster than the hub. you talked about the maintenance on a BBSHD. If you don't soup it up with a higher voltage battery you should not have maintenance problems out of the ordinary. I believe that getting the chain line correct is the bigger problem with the BBSHD. Grin at ebikes.ca has a rear geared hub motor that uses a solid 10mm axle, called the GMAC Motor.
Rick is offline  
Old 05-27-21, 06:49 AM
  #4  
northernjeep
Member
 
Join Date: Feb 2016
Location: Winnipeg, Manitoba, Canada
Posts: 28

Bikes: Khs fatbike, Evo toba road bike, 2 delta trikes homemade. all with e assist

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked 14 Times in 6 Posts
As long as your cargo bike has steel forks go for a front hub motor. And buy or make at least 2 torque arms just for the safety factor. Of the 2 different types direct drive is heavier and without power to it has some resistance from the magnets in the hub. The geared hubs are smaller, lighter and have little to no resistance when not powered.
northernjeep is offline  
Old 05-27-21, 05:00 PM
  #5  
Pop N Wood
Senior Member
 
Join Date: Jun 2020
Location: Maryland
Posts: 1,163

Bikes: 1982 Bianchi Sport SX, Rayleigh Tamland 1, Rans V-Rex recumbent, Fuji MTB, 80's Cannondale MTB with BBSHD ebike motor

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 552 Post(s)
Liked 430 Times in 284 Posts
Really don't understand why you think a BBSHD is maintenance issue. The things are pretty bullet proof.

A Yuba Mundo has extra long chainstays. Chain line should be less of an issue with that.
Pop N Wood is offline  
Likes For Pop N Wood:
Old 05-27-21, 08:01 PM
  #6  
Rick
Senior Member
 
Join Date: Feb 2007
Posts: 653
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 284 Post(s)
Likes: 0
Liked 136 Times in 89 Posts
A Yuba Mundo has extra long chainstays. Chain line should be less of an issue with that.
The chain/belt line on a Yuba Mundo should be even easier with a Rohloff hub, a BBSHD and a Veer belt. I might need a machine shop also but am willing to try. VEER makes belts that screw together and I saw a video on YouTube that had a Yuba Mundo with one of their belts on it.
Rick is offline  
Likes For Rick:
Old 06-01-21, 11:25 PM
  #7  
Leisesturm
Senior Member
 
Join Date: Jul 2005
Posts: 4,733
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 1736 Post(s)
Liked 279 Times in 204 Posts
Originally Posted by The Big Wheel View Post
My next plan was to buy a rear hub kit but I read about some issues: 1) The rear axle is 14mm and most axles are 10mm or 12mm so I would have to deal with that and 2) I would have to fabricate some kind of torque handles.
Your wording makes me think that you believe that a front motor kit is free of the need to fabricate torque arms. This is incorrect! Even a steel fork needs torque arms. Two of them. You don't have to fabricate them. They are readily available from wherever you get your motor. All you have to do is attach them. Yuba makes a Mundo with an integral motor. Guess where it is. Yep, mid-drive. Cargo bikes are the poster child for high grunt, stump pulling torque excess and that is where mid-drives shine. The next most popular place is the rear hub, because rear dropouts are stronger, and 500W - 1000W is a handful in a front fork. If it all seems daunting get help installing but don't put a subpar vehicle on the road just to escape some hassle.
Leisesturm is offline  
Likes For Leisesturm:
Old 06-10-21, 02:26 PM
  #8  
Bluesfrog
Senior Member
 
Join Date: Jul 2019
Posts: 163
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked 19 Times in 18 Posts
I was thinking of multiple bikes with motor kits. Recently I have thought out a system to use with a Worksman Low Gravity Bike, ( truck bike ). Thanks and Be Well, Bluesfrog.
Bluesfrog 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.