Go Back  R/C Tech Forums > General Forums > Electric Off-Road
Brushless vs Brush 2wd offroad >

Brushless vs Brush 2wd offroad

Community
Wiki Posts
Search

Brushless vs Brush 2wd offroad

Thread Tools
 
Search this Thread
 
Old 01-04-2008, 08:48 PM
  #1  
Tech Initiate
Thread Starter
 
Join Date: Apr 2007
Posts: 30
Default Brushless vs Brush 2wd offroad

What is the advantage to getting a brush motor? They cost just as much as the brushless?

Am I missing something? What are the pro's and con's? I don't see why it would make sense to get a brush system.
Ryan McBee is offline  
Old 01-04-2008, 09:56 PM
  #2  
Tech Addict
iTrader: (3)
 
foolio's Avatar
 
Join Date: Jan 2006
Location: Indianapolis, IN
Posts: 732
Trader Rating: 3 (100%+)
Default

In mod racing I don't see the point to go with a brushed motor except for personal preference. In stock, brushless motors are not officially legal in sanctioned events.
foolio is offline  
Old 01-05-2008, 09:00 PM
  #3  
Tech Regular
 
DrKnow65's Avatar
 
Join Date: Nov 2007
Location: Carbondale, Colorado
Posts: 281
Default

No advantage to brushed motors, unless your into bench time??? Or you just have no choise as to the class you want to race in.

Brushless is more efficient i.e. less heat, longer run times.
DrKnow65 is offline  
Old 01-05-2008, 10:40 PM
  #4  
Tech Elite
iTrader: (22)
 
mafiaracers's Avatar
 
Join Date: Mar 2004
Location: West Linn, Oregon
Posts: 3,759
Trader Rating: 22 (100%+)
Default

"Pro stock" is the 19t class at my track...in that class we run BL (10.5 limit) and 19t brushed motors, lipo or 6cell all together. It's really a toss-up from week to week, Brushed and Lipo might TQ one week...Brushed and 6Cell TQ'd last night...some of the fastest drivers run both lipo and BL....There is no cookie-cutter blanket advantage either way.

I run BL and Lipo simply for the fact that it allows me to to spend more time on the track.
mafiaracers is offline  
Old 01-06-2008, 01:36 AM
  #5  
Tech Addict
 
fathead's Avatar
 
Join Date: Sep 2003
Location: Auckland NZ
Posts: 621
Default

I think it was 8 out of 10 at the last offroad worlds ran brushed in 2WD mod, the only brushless runners were the Novak guys.

It's probably not so bad with the new Novak Light motors but generally brushless have too much torque down low for 2WD, especially on a low grip surface, brushed have a much softer low end which equals more traction and less wheelspin.
fathead is offline  
Old 01-06-2008, 03:54 AM
  #6  
Tech Master
 
Join Date: Dec 2005
Location: Cheltenham, Gloucestershire, England
Posts: 1,211
Default

I think you'll find what the guys us in international meetings is down to what their sponsors tell them to use!

If you think about it then there is not much point fitting a system you can't sell to the public on one of your drivers cars as the day after there will be comments like the following all over the net

"Company X must think their brushed motors suck if they risked using experimental parts at the worlds"

"Company X, ha not supporting them ... can never buy what their team are using so how are you supposed to compete"

etc

etc

etc
RogerM is offline  
Old 01-06-2008, 05:23 AM
  #7  
Tech Fanatic
 
Scrubb's Avatar
 
Join Date: Jun 2003
Posts: 904
Default

Brushed motors are cheaper to buy in differents winds for more or less power. You can use the same can and buy different armatures for very cheap. If you travel to different tracks frequently that have different levels of traction, its nice to have power options, and being able to swap them easily.
Scrubb is offline  
Old 01-06-2008, 07:49 AM
  #8  
Tech Regular
 
DrKnow65's Avatar
 
Join Date: Nov 2007
Location: Carbondale, Colorado
Posts: 281
Default

Originally Posted by Scrubb
Brushed motors are cheaper to buy in differents winds for more or less power. You can use the same can and buy different armatures for very cheap. If you travel to different tracks frequently that have different levels of traction, its nice to have power options, and being able to swap them easily.

I've been realy liking the Ammo motors from towerhobbies.com $32-$35 with a few $69 in just about any KV you want. Good product and cheap.
DrKnow65 is offline  
Old 01-06-2008, 08:51 AM
  #9  
Tech Elite
iTrader: (96)
 
Join Date: Sep 2005
Location: Mass.
Posts: 3,470
Trader Rating: 96 (100%+)
Default

Personally, I think I have alot more control of a car with a brushed motor than with brushless. I've tried setting drag in a bl system, but it never did feel right.

Especially on the tight tracks I run at , a brushed motor just seems alot more consistent.
K.Copeland is offline  
Old 01-06-2008, 09:16 AM
  #10  
Tech Regular
iTrader: (14)
 
Join Date: Nov 2007
Posts: 285
Trader Rating: 14 (100%+)
Default Brushless Vs. Brushed

I currently still run brushed but only due to lack of funds for a brushless setup. Main advantage that no one has mentioned is the expected life span of a brushless motor is rediculiously longer than a brushed. You can literally put it in your car and not even touch it for a year. Between life span and maintence the brushless setup wins hands down. Don't forget about all the brushes and motor spray you have to buy to go with a brushed setup. As far as performance they are about equal with a little more run time with the brushless. I also race with sponsored guys and they run what their sponsor gives them brushed or brushless.
mwiley is offline  
Old 01-06-2008, 09:24 AM
  #11  
Tech Elite
iTrader: (22)
 
mafiaracers's Avatar
 
Join Date: Mar 2004
Location: West Linn, Oregon
Posts: 3,759
Trader Rating: 22 (100%+)
Default

I hear ya with the difficulty to drive factor....I run a 13.5 and that motor is just nutty at the bottom end...Instant crazy torque at any rpm level. Most of the BL guys are having to run extremely low gear ratios to calm down the power delivery. I'm running 28/76 in my B4 and I'm still loosening the slipper clutch a little more than usual just to make the car drive like it's not punched out of it's mind!

I've got my ESC settings dialed in perfect, the off-throttle feels great and it's as linear as the settings allow, but those 13.5....they sure are stump pullers!
mafiaracers is offline  
Old 01-06-2008, 09:48 AM
  #12  
Tech Addict
 
chuckinator's Avatar
 
Join Date: Nov 2005
Location: Tucson, Az
Posts: 624
Default

One thing no one has pointed out is that the have different braking characteristics. Yes BL motors have insane torque but that also makes them brake harder. Something that you really have to get down if you want to go fast with a 2wd. A brushed motor almost acts like it has antilock brakes when compared to a brushless motro which is more like pulling the E-Brake on your car.
chuckinator is offline  
Old 01-06-2008, 11:17 AM
  #13  
Tech Addict
iTrader: (6)
 
wfdfiremedic's Avatar
 
Join Date: Apr 2007
Location: CT
Posts: 598
Trader Rating: 6 (100%+)
Default

I think you really have to try both in order to see what suits you better. Brushed motors have a great feel to them...very linear in my opinion. I think low turn brushless is harder to control with all the power they can deliver, which means you have to have a well trained throttle finger.

The expensive brushed motors such as the checkpoints are well worth it in my opinion.
wfdfiremedic is offline  
Old 01-06-2008, 01:33 PM
  #14  
Tech Elite
iTrader: (22)
 
mafiaracers's Avatar
 
Join Date: Mar 2004
Location: West Linn, Oregon
Posts: 3,759
Trader Rating: 22 (100%+)
Default

the braking (for me atleast) has been controlled/adjusted all by the radio and ESC adjustments. I just take out the brake strength in the trigger on the radio and add drag brake on the ESC...so far I've been able to replicate a brushed motor very well.
mafiaracers is offline  
Old 01-06-2008, 03:21 PM
  #15  
Tech Elite
iTrader: (41)
 
OG RC 10T's Avatar
 
Join Date: May 2007
Posts: 2,656
Trader Rating: 41 (100%+)
Default

Brushed = more maintnance, increased drag break, cheaper to buy.

Brushless = Less maintnance, increaded run time.
OG RC 10T is offline  


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

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.