Brushes Explained

Reply

Old 04-16-2003, 07:05 PM
  #1  
Tech Master
Thread Starter
 
Stonzy's Avatar
 
Join Date: Mar 2003
Location: Australia, Tweed Heads
Posts: 1,482
Default Brushes Explained

Hi there again, I'm from the Slot car scene but just getting into the RC scene and wondering about the different types of brushes.
In slot cars there are a couple of types, Vertical and Horizontal brushes are used...

In the RC scene i have read about Laydown brushes....My question is. Are Laydown brushes they the same as Horizontal brushes in slot cars?
Thanks
Alan.
Stonzy is offline  
Reply With Quote
Old 04-16-2003, 07:17 PM
  #2  
Tom
Tech Regular
 
Tom's Avatar
 
Join Date: Nov 2002
Location: Australia-mate
Posts: 349
Default

in rc there is lay down and stand up

stand up are tall but thin and used in mod motors

laydown are shorter but fater(stand up turned on its side)
Tom is offline  
Reply With Quote
Old 04-16-2003, 07:21 PM
  #3  
Tech Master
Thread Starter
 
Stonzy's Avatar
 
Join Date: Mar 2003
Location: Australia, Tweed Heads
Posts: 1,482
Default

So the Laydown brushes are the same as Horizontal brushes as what they have in slot cars?
Stonzy is offline  
Reply With Quote
Old 04-16-2003, 07:36 PM
  #4  
Tech Addict
iTrader: (24)
 
pimpedaccord's Avatar
 
Join Date: Apr 2002
Location: Massillon OH
Posts: 722
Trader Rating: 24 (100%+)
Default

Don't forget P-94 (one big square)

I've never even really seen a slot car, but I'm sure that rc brushes are much larger if that's what your asking?

Laydown (horizontal) brushes are for stock
Standup (vertical) brushes are for mod
P-94 is for mod

There are some freak motors that don't follow that, but that's pretty much how it goes...
pimpedaccord is offline  
Reply With Quote
Old 04-16-2003, 07:43 PM
  #5  
Tech Master
Thread Starter
 
Stonzy's Avatar
 
Join Date: Mar 2003
Location: Australia, Tweed Heads
Posts: 1,482
Default

Ok thanks Pimpedaccord, That's what i thought. Exactly the same as slot cars as well but RC scene call them differently....

Obviously the slot car brushes are smaller but they work on the same principal.

Slot cars now have Gold dust brushes which have a higher conductivity...They are expensive but they are worth the extra expense. Maybe the RC companies should try that out as well.
Stonzy is offline  
Reply With Quote
Old 04-16-2003, 07:56 PM
  #6  
Tech Elite
 
fatdoggy's Avatar
 
Join Date: Aug 2001
Location: MD USA
Posts: 3,642
Default

The new Reedy Krypton Mod's uses laydown brushes.
fatdoggy is offline  
Reply With Quote
Old 04-16-2003, 08:01 PM
  #7  
Tech Master
Thread Starter
 
Stonzy's Avatar
 
Join Date: Mar 2003
Location: Australia, Tweed Heads
Posts: 1,482
Default

In slot cars even the open motors are using horizontal (laydown) brushes. They found to give more power due to they have more wrap around effect on the comm where as the vertical ones have less friction and will therefor make the arm easier to spin easier they have found they are coverting back to horizontal brushes on mod motors now because of the technology is getting better..
Stonzy is offline  
Reply With Quote
Old 04-16-2003, 08:45 PM
  #8  
Super Moderator
iTrader: (2)
 
Grizzbob's Avatar
 
Join Date: Feb 2002
Location: Sand Springs, OK
Posts: 3,063
Trader Rating: 2 (100%+)
Default

Right, the R/C motor designers are simply using what they know from slot car motor experience & incorporating them into the bigger motors, & trying to find the right compromise between speed, torque & efficiency(though with the bigger motors there does seem to be some minor differences in how those tricks work). For example, laydown brushes seem best in stock class motors(since power is the most important need & today's batteries make run time problems non-existant), but in mods the cogging effect can hurt their efficiency too much, so they usually use standard(standup) brushes or a more squared brush like the P-94 design....
Grizzbob is offline  
Reply With Quote
Old 04-16-2003, 09:40 PM
  #9  
Tom
Tech Regular
 
Tom's Avatar
 
Join Date: Nov 2002
Location: Australia-mate
Posts: 349
Default

slot cars uses laydown becaues the comm is a larger diamater Vs the rest of the motor, like the new Reedy Krypton. I think?
Tom is offline  
Reply With Quote
Old 04-16-2003, 10:27 PM
  #10  
Tech Master
Thread Starter
 
Stonzy's Avatar
 
Join Date: Mar 2003
Location: Australia, Tweed Heads
Posts: 1,482
Default

Slot cars use vertical brushes as well but they are only more common in the group 7 and group 27 motors
Stonzy is offline  
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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 On
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Terms of Service