R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 01-07-2008, 12:58 PM   #16
Tech Master
 
PitNamedGordie's Avatar
 
Join Date: Nov 2003
Location: Highwood, IL
Posts: 1,789
Trader Rating: 8 (100%+)
Send a message via AIM to PitNamedGordie Send a message via Yahoo to PitNamedGordie
Default

[QUOTE=NovakTwo;4048414]
Quote:
Originally Posted by PitNamedGordie View Post

I'm guessing that you are inquiring about tuning rotor use in spec racing?

The rotors fit in the higher wind motors, but spec race directors can (and do) decide against their use in their race events----to level the playing field for the racers.

For example, Sonny Brown does not allow the tuning rotor in his BRL Oval series spec races.
Our track hasn't brought it up. That's interesting. The 13mm rotor doesn't make a 13.5 BL, for example, faster per say. It changes the feel of the motor. Interesting. Does he restrict what types of brushes/springs people can run in brushed (not familiar with BRL rules)?
__________________
☆ The Track @ Harbor Hobbies ☆ www.harbor-hobby.net ☆
PitNamedGordie is offline   Reply With Quote
Old 01-07-2008, 01:08 PM   #17
Tech Elite
 
nitro neil's Avatar
 
Join Date: Aug 2004
Location: zion,il
Posts: 2,179
Trader Rating: 73 (100%+)
Default

it is nice to see that novak is on top of all of this stuff and have thought it out. I'm still curios to what the other motor companies are doing and there thoughts. they have been on this thread and i'm hoping soon they will have something on this topic. remember guys this is just discussion
nitro neil is offline   Reply With Quote
Old 01-07-2008, 01:10 PM   #18
Company Representative
R/C Tech Elite Subscriber
 
Join Date: Jun 2005
Location: SoCal
Posts: 2,891
Default

Sonny's Oval League is all brushless--Brushless Racing League (BRL).

Here are the rules:

BRL Rules

Apparently, Snowbirds is using the BRL rules in a couple of events.

Quote:
PitNamedGordie

Our track hasn't brought it up. That's interesting. The 13mm rotor doesn't make a 13.5 BL, for example, faster per say. It changes the feel of the motor. Interesting. Does he restrict what types of brushes/springs people can run in brushed (not familiar with BRL rules)?
NovakTwo is offline   Reply With Quote
Old 01-07-2008, 01:12 PM   #19
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

[QUOTE=PitNamedGordie;4048449]
Quote:
Originally Posted by NovakTwo View Post

Our track hasn't brought it up. That's interesting. The 13mm rotor doesn't make a 13.5 BL, for example, faster per say. It changes the feel of the motor. Interesting. Does he restrict what types of brushes/springs people can run in brushed (not familiar with BRL rules)?
There is a linear relationship between rotor size and motor output. A Novak 13.5 with a 13mm rotor will put out more power than with the Stock 12.3mm rotor. Both require different gear ratios but the motor with the 13mm rotor will be faster when geared properly.

Without regulation 13.5 and 10.5 racers will stuff the biggest rotor possible in their motors to go as fast as possible.

Mod racers run smaller rotor to reduce the punch of a motor and gain efficiency if they are close to dumping.
__________________
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 01-07-2008, 01:23 PM   #20
Tech Master
 
PitNamedGordie's Avatar
 
Join Date: Nov 2003
Location: Highwood, IL
Posts: 1,789
Trader Rating: 8 (100%+)
Send a message via AIM to PitNamedGordie Send a message via Yahoo to PitNamedGordie
Default

[QUOTE=AdrianM;4048496]
Quote:
Originally Posted by PitNamedGordie View Post

There is a linear relationship between rotor size and motor output. A Novak 13.5 with a 13mm rotor will put out more power than with the Stock 12.3mm rotor. Both require different gear ratios but the motor with the 13mm rotor will be faster when geared properly.

Without regulation 13.5 and 10.5 racers will stuff the biggest rotor possible in their motors to go as fast as possible.

Mod racers run smaller rotor to reduce the punch of a motor and gain efficiency if they are close to dumping.
So in essence a 13mm rotor is faster since it can be geared higher than the 12.3 rotor. hmmm ok I thought it created more torgue but less RPM and the two offset each other. Meaning it may give you more punch (and drag break) but not really be any faster.
__________________
☆ The Track @ Harbor Hobbies ☆ www.harbor-hobby.net ☆
PitNamedGordie is offline   Reply With Quote
Old 01-08-2008, 06:46 AM   #21
Tech Elite
 
nitro neil's Avatar
 
Join Date: Aug 2004
Location: zion,il
Posts: 2,179
Trader Rating: 73 (100%+)
Default

well we have heard from novak on what they are doing for teching and now we just need to here from a few other motor companies to see what they are doing.
nitro neil is offline   Reply With Quote
Old 01-08-2008, 08:32 AM   #22
Tech Elite
 
Johnny Wishbone's Avatar
 
Join Date: Feb 2006
Posts: 3,419
Trader Rating: 6 (100%+)
Default

Once a standard has been set, just have them machine the end of the shaft like in 19T, course on the pinion shaft though.

When will they start playing with rotor lenghts?
Johnny Wishbone is offline   Reply With Quote
Old 01-08-2008, 09:14 AM   #23
Tech Lord
 
syndr0me's Avatar
 
Join Date: Dec 2004
Location: 5280 Raceway
Posts: 13,140
Trader Rating: 32 (100%+)
Default

How will the issue of rewound stators be dealt with? There's been a lot of talk lately about winding your own stator to get the minimum possible inductance.
syndr0me is offline   Reply With Quote
Old 01-08-2008, 09:14 AM   #24
Company Representative
R/C Tech Elite Subscriber
 
Join Date: Jun 2005
Location: SoCal
Posts: 2,891
Default

Quote:
Originally Posted by nitro neil View Post
well we have heard from novak on what they are doing for teching and now we just need to here from a few other motor companies to see what they are doing.

Hope you're not holding your breath......
NovakTwo is offline   Reply With Quote
Old 01-08-2008, 11:30 AM   #25
Tech Elite
 
nitro neil's Avatar
 
Join Date: Aug 2004
Location: zion,il
Posts: 2,179
Trader Rating: 73 (100%+)
Default

Quote:
Originally Posted by NovakTwo View Post
Hope you're not holding your breath......
i'm not but i would like to hear what trinity and lrp and orion have on there motors. They may have something diffrent in mind for teching. this gives everyone a chance to compare some ways of doing it and then maybe make a standard.
nitro neil is offline   Reply With Quote
Old 01-18-2008, 08:37 AM   #26
Tech Elite
 
nitro neil's Avatar
 
Join Date: Aug 2004
Location: zion,il
Posts: 2,179
Trader Rating: 73 (100%+)
Default

anyone heard any talk on what roar will be doing
nitro neil is offline   Reply With Quote
Old 01-20-2008, 05:57 AM   #27
Tech Elite
 
fastolfart's Avatar
 
Join Date: Jul 2002
Location: OZ
Posts: 2,275
Default

Quote:
We are currently working on a device which should easily and accurately determine the wind of a given brushless motor
Steve, Can you please PM me when you get the tester sorted.

One of the issues we have come across down under, is the inductance tests don't always work. We ran a major meeting using the Novak 13.5's in the middle of Summer and had issues with wildly varying readings. The Novak test results are on only 20 motors tested, not enough as far as I am concerned as this would not even rate for a poll.
I have heard rumours that other brushless motor manufactures are coming out with motor testers, but still waiting
Maybe an optical tacho, with a fixed voltage power supply to keep it all consistant, then we could work of the RPM/V rules.
__________________
It is so hard to fix the driver, but so easy to blame the car.
fastolfart is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Brushless Motor Failures and Motor Coolers or8ital Electric On-Road 54 10-03-2008 01:11 PM
Wanted : Novak 4300 brushless motor and a 13.5 motor lbckevin R/C Items: Wanted to Buy 6 09-18-2008 04:51 PM
27T TIMING GAUGE FOR TECHING ICEMAN96 Racing Forum 1 04-14-2008 12:14 PM
FS/FT NIB LRP 5.5T Brushless motor/ Castle CM-2080 motor Trade for Newer FUTABA S9451 ffpm46 R/C Items: For Sale/Trade 13 03-31-2008 02:17 PM
NOVAK GTB BRUSHLESS RACING ESC 2.4GHZ + 13.5 BRUSHLESS MOTOR meronr R/C Items: For Sale/Trade 12 01-29-2008 02:18 PM



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 06:41 AM.


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