Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-05-09, 11:41 PM   #1
alswiseowl
Member
Thread Starter
 
Join Date: Jun 2008
Bikes:
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
motor installation question

hi there...
i am about to mount my (my1018)motor to my bicycle
i have noticed the metal i am using to mount the motor,sticks to the motor
because of a magnet that is in the motor...
is this a bad thing,will it reck or ruin the motor??????
thanks for your time
hope to hear from you soon
take care
alex
alswiseowl is offline   Reply With Quote
Old 02-06-09, 01:49 PM   #2
Antranik
Banned.
 
Join Date: Jun 2008
Bikes:
Posts: 40
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Motors are made up of MAGNETS and copper wires. Your forks are made of steel, so the magnets will be attracted to them. All is normal. Carry on.
Antranik is offline   Reply With Quote
Old 02-06-09, 02:59 PM   #3
unime
adrenaline junkie
 
Join Date: Sep 2008
Bikes:
Posts: 123
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Antranik View Post
Motors are made up of MAGNETS and copper wires. Your forks are made of steel, so the magnets will be attracted to them. All is normal. Carry on.
Sort of. Allowing the magnetic field to escape the motor's housing is a sign of ineficiency - it means the magnetic circuit in the motor is leaky. Adding ferromagnetic parts outside such a motor might even make it run better!

FYI, homebrew outrunner motor builders use a "paper clip test" to make sure the iron bell (which holds the magnets) is thick enough - if a paper clip is attracted to the bell, it is too think and losing some efficiency.
unime is offline   Reply With Quote
Old 02-07-09, 12:00 AM   #4
alswiseowl
Member
Thread Starter
 
Join Date: Jun 2008
Bikes:
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
this may sound silly,
but what is a basic definition of ferromagnetic..
does ferromagnetic materials stick or not..my apologies for this question...

once again thanks for your information + time..
i really appreciate it..
alex
alswiseowl is offline   Reply With Quote
Old 02-07-09, 07:39 PM   #5
JinbaIttai
P7 Fanboy
 
JinbaIttai's Avatar
 
Join Date: Jul 2008
Location: Crippled Burrick Inn
Bikes:
Posts: 338
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Ferromagnetic as in ferrous, which means it contains iron, which means it sticks.

Ferromagnetic materials stick to magnets.
JinbaIttai is offline   Reply With Quote
Old 02-07-09, 10:42 PM   #6
alswiseowl
Member
Thread Starter
 
Join Date: Jun 2008
Bikes:
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
thanks for that..
alex
alswiseowl is offline   Reply With Quote
Old 02-07-09, 10:59 PM   #7
unime
adrenaline junkie
 
Join Date: Sep 2008
Bikes:
Posts: 123
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Ferromagnetic materials interact strongly with magnetic fields, spontaneously aligning their magnetic dipoles (electron spins). Iron (thus the "ferro") and Cobalt are example of ferromagnetic metals. The magnetic alignment of electrons within a ferromagnetic material carries magnetic fields efficiently through the material, enabling the construction of magnetic circuits.

Ferromagnetism is what we usually mean when we speak of magnetic materials - either as a strong attraction or permanent magnetization. Other materials may be paramagnetic or diamagnetic in the presence of a magnetic field, exhibiting a temporary and typically very weak attraction or repulsion to the field.

I don't know if that helps, but magnetism is a very interesting subject.
unime is offline   Reply With Quote
Old 02-07-09, 11:02 PM   #8
alswiseowl
Member
Thread Starter
 
Join Date: Jun 2008
Bikes:
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
definatly helps.
thanks unime
alswiseowl is offline   Reply With Quote
Old 02-08-09, 06:16 PM   #9
drewsoccer2
Banned
 
Join Date: Feb 2009
Bikes:
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
excercise

heres an idea get of your fat rump and go ride a realbike
drewsoccer2 is offline   Reply With Quote
Old 02-08-09, 09:13 PM   #10
JinbaIttai
P7 Fanboy
 
JinbaIttai's Avatar
 
Join Date: Jul 2008
Location: Crippled Burrick Inn
Bikes:
Posts: 338
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I definitely won't be doing that anytime soon. Do you know how many Big Macs I had to eat to grow my cankles? I don't think so!
JinbaIttai is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 08:14 AM.