Go Back  R/C Tech Forums > General Forums > Electric On-Road
Sensored vs. Sensorless >

Sensored vs. Sensorless

Sensored vs. Sensorless

Reply

Old 07-26-2008, 11:45 AM
  #61  
Tech Regular
 
Join Date: Jan 2007
Location: Rantoul,Il
Posts: 424
Default

I've got a Novak XBR and a 17.5 in my RWD TC. I've got the latest software in my Sidewinder and it's mounted in my KX1 4WD TC. I would like to have a motor that would run like the 17.5 for the 4WD. I also have a Yokomo YR-F2 FWD with a brushed 27T stock. I'd like to be able to compare the 3 with similar power systems. Thanks, Don
DLS II is offline  
Reply With Quote
Old 07-27-2008, 02:44 AM
  #62  
Tech Initiate
 
Join Date: Feb 2007
Posts: 35
Default

Originally Posted by heretic View Post
M.Hoffer on the GM BL thread keeps repeating that NONE of the GM team drivers use sensors .." NO DIFFERENCE ", he says... and I do believe him !
Control/response - sensor vs no sensor = IS DIFFERENCE!!
sagino is offline  
Reply With Quote
Old 07-27-2008, 04:00 AM
  #63  
Tech Adept
iTrader: (1)
 
Join Date: Sep 2004
Location: UK
Posts: 108
Trader Rating: 1 (100%+)
Default

Originally Posted by sagino View Post
Control/response - sensor vs no sensor = IS DIFFERENCE!!
HAve you run the gm unit? having run both lrp and gm the gm run sensorless is far superior in feel and control
mark34 is offline  
Reply With Quote
Old 07-28-2008, 03:27 AM
  #64  
PDM
Tech Adept
 
Join Date: Sep 2007
Posts: 184
Default

Originally Posted by andsetinn View Post
This is very interesting thread. I don't think I've ever seen as many supposedly informed people telling others as many wrong things.

The rules for brushless motor were not written by Roar on a blank sheet. They were written using suggestions from brushless motor manufacturers. It was long time ago and there were few manufacturers interested in the market, which is why the rules suited one manufacturer very well.


Do not forget by that time there was allready a big market for brushless motors. By that time they were sensorless allready...in model airplanes. Model airplanes use a lot of different sizes of motors. 1/10 cars use one size of those motors, so every maker allways had a motor the same size as cars use.

"Unknown" makers like Hacker, Kontronik, ElectronicModel, just to name a few, had by that time motors for 1:10 cars. The "problem" was those motors had by that time twice the power of the "known" makers. Perhaps now you understand why the rules where written that way...it was not a problem of nobody wanted to come in, was a problem of not letting others to come in.
PDM is offline  
Reply With Quote
Old 07-28-2008, 04:10 AM
  #65  
Tech Fanatic
iTrader: (1)
 
Join Date: Jun 2007
Posts: 947
Trader Rating: 1 (100%+)
Default

which explains why ROAR went with a wind rating instead of a kv rating.
Sabin is offline  
Reply With Quote
Old 07-29-2008, 02:28 AM
  #66  
Tech Addict
 
Join Date: Feb 2004
Location: Iceland
Posts: 588
Default

PDM, you're forgetting Aviox, one of, if not the largest RC brushless manufacturer of that time. They had RC Car specific brushless system (sensorless) on the market before Novak even started designing theirs.
andsetinn is offline  
Reply With Quote
Old 07-29-2008, 04:22 AM
  #67  
Tech Master
 
heretic's Avatar
 
Join Date: Aug 2006
Location: europe
Posts: 1,110
Default

Hacker, too. I had one. Master Car Competition, was the name. Sensorless, needless to say.
heretic is offline  
Reply With Quote
Old 07-29-2008, 06:48 AM
  #68  
PDM
Tech Adept
 
Join Date: Sep 2007
Posts: 184
Default

Originally Posted by andsetinn View Post
PDM, you're forgetting Aviox, one of, if not the largest RC brushless manufacturer of that time. They had RC Car specific brushless system (sensorless) on the market before Novak even started designing theirs.
You are right. I did not forget, I just mention a few, and European (they are closer to me). You wrote Aviox. Aveox is what I have in my mind.

Yes they were a major developer of brushless motors, they were for a lot of people a reference.

I have the ideia that since 2002 (or around that) all major makers use sensorless systems.
PDM is offline  
Reply With Quote
Old 07-29-2008, 07:26 AM
  #69  
Tech Addict
 
burito's Avatar
 
Join Date: Feb 2002
Location: Germany
Posts: 511
Default

Hey there,

many of you do miss one very important point which was pushed by the federations (ROAR, IFMAR, EFRA, etc) and the brushed motor companies. Which is that the rules had to be written in a way so that the new brushless technology would not "blow away" brushed and the the two could compete with eachother in the same class and with similar performance.
This is why the rules for brushless are the way they are and not some other conspiracy theory...
burito is offline  
Reply With Quote
Old 07-29-2008, 08:05 AM
  #70  
Tech Elite
iTrader: (2)
 
Francis M.'s Avatar
 
Join Date: Apr 2002
Location: Yorba Linda, CA
Posts: 4,719
Trader Rating: 2 (100%+)
Default

Conspiracy theory...lol
I know that all these brushless companies existed before Novak and LRP developed thiers but there is one major difference.... Those companies didn't promote them for racing and couldn't even begin to write brushless rules which would have been practical to the racing organizations and members...
Francis M. is offline  
Reply With Quote
Old 08-05-2008, 12:36 AM
  #71  
Tech Regular
iTrader: (4)
 
Kajman's Avatar
 
Join Date: May 2008
Posts: 343
Trader Rating: 4 (100%+)
Default

I've tested quite many esc's and motors, the difference is visible in "older" systems, especially on start or when you spin on turn, then a little cogging appears (worst in old style Lehner/BK Electronics ESC, old hacker ESC is smoother & weaker on start, but worse on turns).
Now in new systems, especially like GM I prefer, there is no real difference, even with other companies motors like Tekin or Hacker. Real improvement is easy to see in this category, soon it will be I think cheaper to buy simple sensored system than non-sensored, as it will be easier to make smooth sensored set.
Kajman is offline  
Reply With Quote
Old 02-14-2009, 02:19 AM
  #72  
Tech Adept
iTrader: (3)
 
FelixC's Avatar
 
Join Date: Jan 2008
Posts: 245
Trader Rating: 3 (100%+)
Default mamba max

hi guys i have several Brushless esc already LRP tc spec, Novak GTB, Ko BMC. i recently bought Mamba max 7700kv, can i use my novak velocity 3.5 BL motor and Lrp 4.5 Motor with mamba max? thanks in advance.
FelixC 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