R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 12-03-2004, 07:47 PM   #31
Tech Fanatic
 
Join Date: Nov 2002
Location: N. Cali
Posts: 854
Send a message via AIM to loosenut
Default

The real question is whether if the LRP system is ROAR legal? It says it's equivalent to a 9 turn motor but under the ROAR's brushless rules..it says that the allowable mod brushless system should equal to a 10 turn brushed motor? I wonder why LRP didn't make it ROAR legal? Or is it?

G
__________________
Tekno SCT410//B44.x Avid Chasis//B5M//HW 3656 - 4700 kv// HW V10//MT-4
loosenut is offline   Reply With Quote
Old 12-03-2004, 08:02 PM   #32
Tech Master
 
Peter Busch's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Minnesota
Posts: 1,491
Default

That motor looks just like the novak
Peter Busch is offline   Reply With Quote
Old 12-03-2004, 08:25 PM   #33
Tech Elite
 
Join Date: Nov 2002
Location: CORONA , CALIF.
Posts: 4,054
Trader Rating: 1 (100%+)
Post ROAR Legal..

Well if youve noticed in the past . everytime something new comes out thats the first Question that comes up.. I think in time all tracks will have a Brushless class as some of the tracks already run due to the racers buying and running these systems.. I dont see why it wouldnt be legalized even in major events .
__________________
Mark Barden .
mb racer is offline   Reply With Quote
Old 12-03-2004, 10:21 PM   #34
Tech Elite
 
lee82gx's Avatar
 
Join Date: Nov 2002
Location: Land Of peace , Malaysia
Posts: 2,304
Trader Rating: 1 (100%+)
Default

Quote:
Originally posted by loosenut
under the ROAR's brushless rules..i

G
I'm sure you've heard the expression : rules are meant to be broken
but in this case it can easily be rewritten, even before it comes into effect. 1 turn less is no big deal IMHO.
lee82gx is offline   Reply With Quote
Old 12-04-2004, 12:12 AM   #35
Tech Adept
 
414play's Avatar
 
Join Date: Jan 2004
Location: blue mountains
Posts: 180
Default

[[QUOTE]The real question is whether if the LRP system is ROAR legal? It says it's equivalent to a 9 turn motor but under the ROAR's brushless rules..it says that the allowable mod brushless system should equal to a 10 turn brushed motor? I wonder why LRP didn't make it ROAR legal? Or is it?[/QUOTE

i think it would be very hard to put make judgement on what 10 turn, are we talking 10x1,10x2,10x3.what brand (ready,orion,trinity)as their all a little different. i think the difference between all these variables and more would make it hard to tell the difference beteen a 10 turn and a 9 turn.
414play is offline   Reply With Quote
Old 12-04-2004, 01:25 AM   #36
Tech Master
 
Team Duratrax's Avatar
 
Join Date: Aug 2004
Location: NSW, Albury/Wodonga
Posts: 1,674
Send a message via MSN to Team Duratrax
Default

The Novak system puts out 5800rpms and the LRP system puts out 6500rpm so this would make it faster,but thats only due to the 9-10T and the Novak being 11-12T right?
Team Duratrax is offline   Reply With Quote
Old 12-04-2004, 01:27 AM   #37
Tech Adept
 
sonicboom141's Avatar
 
Join Date: Nov 2004
Posts: 224
Send a message via AIM to sonicboom141
Default

how does this compare to the hackor brushless? i believe thats the name
sonicboom141 is offline   Reply With Quote
Old 12-04-2004, 02:02 AM   #38
Tech Elite
 
lee82gx's Avatar
 
Join Date: Nov 2002
Location: Land Of peace , Malaysia
Posts: 2,304
Trader Rating: 1 (100%+)
Default

i believe most hacker systems are way faster than any existing sensor based BL.
They are being rated at between 4-8 turns
lee82gx is offline   Reply With Quote
Old 12-04-2004, 01:58 PM   #39
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

The problem with the hacker systems is control...or lack there of. A sensored systems knows the position of the rotor at all times. It can roll off the line like a brushed motor. A sensor-less system stutters at startup. This makes getting a good start almost impossible. This is fine in airplanes where Hacker is the very best you can possibly buy but its no good for cars...other than monster trucks...lol!

Brushless motors are sometimes sold by turns like brushed motors but due to construction differences (slotted vs slot-less, Delta vs. Wye winds) it is impossible to predict how a motor will run based on number of turns.

The best way to rave motors is in Kv. This rating describes how many RPM the motor will increase with every additional volt applied to it.

Ex: A 1000Kv motor will turn ~1000rpm on 1v or ~2000rpm on 2v, etc.

This will let you know how powerful a certain motor is to a degree. However higher KV motors aren't always faster. Just like all brushed motors brushless motors have a point where they will get hot and start losing efficiency/power. You can overheat and draw too many amps and this will make you go slower. You can also over rev these motors and blow the center magnet on the shaft (Rotor) apart. Some brushless motors have the center magnet wrapped in Kevlar thread to help with this. Whatever you do NEVER rev a brushless motor to full throttle with no load!!!

We will have limited choices at first with brushless motors. The one available first will not be as powerful at the 7-8 turn motors most Mod driver are used to running. The will be plenty fast and will need no maintenance so that will be their initial draw. Faster motors will come out as soon as everyone is sure the current crop of speed controls will survive with the hotter motors.

Thats the main limitation of brushless motors now...speed controls. There is a lot more going on in a brushless speedo than in what we use now. There are basically 3 complete speed controls in each brushless speedo. The problem is getting them small to fit in our cars while still building in the ability to survive running a 6500Kv+ motor.

Brushless is certainly the future but there is a lot of stuff we need to unlearn and a lot of stuff to learn in order to go fast.
__________________
Adrian Martinez
What I run: Schumacher Mi5/Associated RC10R5.1/Associated RC12R5.2/Futaba/HobbyWing/Team EA Motorsports/BSR Racing
Where I run: Florida Indoor R/C Complex/Thunder Racing/Florida On Road State Series
AdrianM is offline   Reply With Quote
Old 12-04-2004, 02:25 PM   #40
Tech Elite
 
kufman's Avatar
 
Join Date: Feb 2004
Location: Elburn, IL
Posts: 3,428
Trader Rating: 6 (100%+)
Default

Quote:
The problem with the hacker systems is control...or lack there of. A sensored systems knows the position of the rotor at all times. It can roll off the line like a brushed motor. A sensor-less system stutters at startup. This makes getting a good start almost impossible
You haven't driven a non-hacker based system I am guessing. My Schulze-Lehner has not problems getting off the line unless you try to go 1mph comming off the line. If you want full out off the line, it will do it without stuttering. So... unless you are rock crawling, the Schulze U-Force 75 drives just about any more very well.

Quote:
The real question is whether if the LRP system is ROAR legal? It says it's equivalent to a 9 turn motor but under the ROAR's brushless rules..it says that the allowable mod brushless system should equal to a 10 turn brushed motor? I wonder why LRP didn't make it ROAR legal? Or is it?
The ROAR rules layout the turn limitaions for brushless motors and I believe mod is 7.5 turns. In my opinion, the ROAR rules are dumber than dumb. They specify rules that would make most brushed motors illegal. The rules about stator material and design is dumb (would rule out all current stock motors if the same rules existed for brushed). It is too bad that they taylored the rules to one companies motor and not to a real set of specifications that make sense. Lets hope enough companies want to break the rules and then the rules will most likely change.
__________________
Brushes? We don't need no stinking brushes!!!
kufman is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Reedy Brushless motor - $35? floatch R/C Items: For Sale/Trade 6 03-16-2008 11:39 AM
Reedy neo one Brushless motor straightaway R/C Items: For Sale/Trade 2 11-19-2007 05:44 PM
Reedy Neo One Brushless Motor NIB $35 riverrevo R/C Items: For Sale/Trade 3 09-01-2007 12:12 PM
reedy brushless motor Miguel Electric On-Road 5 02-04-2007 11:03 PM
Reedy Brushless Motor rcpinky Electric On-Road 5 10-29-2004 09:24 AM



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



All times are GMT -7. It is currently 11:28 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net