R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 03-21-2008, 09:00 AM   #16
Tech Elite
 
ALBERTO's Avatar
 
Join Date: Aug 2004
Location: LONG ISLAND, NEW YORK
Posts: 2,986
Trader Rating: 23 (96%+)
Send a message via AIM to ALBERTO Send a message via Yahoo to ALBERTO
Default

Quote:
Originally Posted by Syber Serulean View Post
how i understand it, 17.5 doesnt have as much RPMs as brushed but a ton more torque, so it can push through a really high gear ratio to make up for the difference and what ive seen is that on the pro-level, they dont have as much top-speed still as a good brushed motor (but are decently close).

so the 13mm rotors gives more torque and a little less top end (i think), so i figure more torque = more push for taller gearing to add more topspeed? Am i right or will it not work out too well?


edit: if this thread belongs in the Radio and electronics forum, can a mod please movie it there? Thanks.
Hey guys this was the question.. Not weather if it's legal or not.
ALBERTO is offline   Reply With Quote
Old 03-21-2008, 09:01 AM   #17
Tech Fanatic
 
Join Date: Jun 2005
Posts: 900
Default

Does anyone wonder why the Japanese still haven't made BL legal?

We tried to tell you all it wasn't going to be simple, but oh no, you all knew better...
SlowerOne is offline   Reply With Quote
Old 03-21-2008, 11:00 AM   #18
Tech Elite
 
Turbo Joe's Avatar
 
Join Date: Nov 2003
Location: Corona, CA
Posts: 4,878
Trader Rating: 41 (100%+)
Default

Quote:
Originally Posted by SlowerOne View Post
Does anyone wonder why the Japanese still haven't made BL legal?

We tried to tell you all it wasn't going to be simple, but oh no, you all knew better...

It IS simpler...it's you brushed guys who think it's more complicated. Tuning options aren't a bad thing.
Turbo Joe is offline   Reply With Quote
Old 03-21-2008, 11:01 AM   #19
Tech Regular
 
Join Date: Feb 2002
Location: MI
Posts: 462
Default

Quote:
Originally Posted by schurcr View Post
Hey I've got a dead wound 19 turn arm that's really a 17 turn that will make your 19 turn motor faster than a brushless 10.5. Doh ...... wait ..... that's illegal twice.

Why do people feel they need to cheat to be faster. Maybe you should put a 13.5 stator in your 17.5, that'll make it faster. Better yet, take your 13.5 and out a 17.5 lable on it. Clubs don't care when there racers stop comming because the club doesn't have the time, money our resources to tech BL motors at a club race and people are cheating. That will just go to support what the brushed guys have been saying all along, it's to easy to cheat with brushless.

Leave it to a few sour grapes to ruin it for all. You wonder why on-road is on such a decline? Go figure.

Sweet Jeesus, are you kidding me? I ran the 13mm rotor before the rules for ROAR were even in place. It's not cheating if there aren't even rules yet. Besides, everyone I was running with knew I was trying it. Guess what? It was slower and ran hotter. That's how we learn things.

My 17.5 hasn't had a 13mm rotor in it since then because it is slower. And now it's illegal to run on top of that.

You think it's easier to cheat in BL than brushed? Give me a break. This from a group of racers that forced ROAR to get a jig to check for twisted comms because of cheating. The same group of people that doesn't seem to care that some stock motors don't even meet the minimum wire length spec. It's the slowest fricking class. Why not only allow motors that are actually legal out of the package?
Unregistered is offline   Reply With Quote
Old 03-21-2008, 03:02 PM   #20
Tech Elite
 
Syber Serulean's Avatar
 
Join Date: Oct 2002
Location: Riverside
Posts: 3,656
Trader Rating: 28 (100%+)
Send a message via AIM to Syber Serulean
Default

Quote:
Originally Posted by ALBERTO View Post
Hey guys this was the question.. Not weather if it's legal or not.
*thumbs up*
Syber Serulean is offline   Reply With Quote
Old 03-21-2008, 03:09 PM   #21
Tech Elite
 
SWTour's Avatar
 
Join Date: Sep 2003
Location: Central Coast...CALIF.
Posts: 2,874
Trader Rating: 9 (100%+)
Default

...I didn't see anywhere in the original question ANYTHING about legality, nor the mention of ROAR...

From everything I've seen about NOVAK's "tuning rotor" the 13mm rotor being larger than the 12.3 mm (or what ever the standard rotor is) creates LESS RPM.

When used in a HOT motor like a 3.5, it actually tames the motor down a little, making it a little easier to drive (which is why it ends up faster for a lot of people..., if they just switched to a 4.5 they would probably go just as fast.)

With the SLOWER motors like the 17.5, it would be rare you need to go much slower, depending on the type of racing and/or type of car. But on a slippery track or something...who knows a slower rotor may help your driving and make you smoother there too.

Now, if this was a 11mm rotor or something..then you'd probably see an increase in RPM - and the table would be shifted the other way.
__________________
Joe Myers
R/C Racing since 1985 ~ Santa Maria, CA (Central Coast)
2001-2012 - South-West Tour R/C Oval Series...will the SWT be revived?
Things are headed towards a return of the SWT Series, but for
2017 the focus will be on the Encino Velodrome (and dirt oval racing)
SWTour is offline   Reply With Quote
Old 03-21-2008, 03:20 PM   #22
Tech Elite
 
Turbo Joe's Avatar
 
Join Date: Nov 2003
Location: Corona, CA
Posts: 4,878
Trader Rating: 41 (100%+)
Default

Yep...that and it has more magnetic drag. On the lower-wind motors, it's supposed to open up the ideal gearing range a little.

I ran mine in a 13.5 a few months ago and it was WAAAAYYYY slower on the straight. Even when I geared up, I was getting pulled. In the infield, I was probably a little faster, just because it was a little softer with the taller gear and it turned in nicer due to the drag.

I think that what the brushed guys get confused about...especially the guys who have never run brushless...is that while brushless is easy to run and very consistent, they aren't without a downside. They're much more linear, much more "punchy" and they don't slow down very well compared to a brushed motor.

As time goes by, the brushless mfr's have come up with some tweaks to more closely emulate the brushed "feel" or make them more reliable. The options don't necessarily make the motor more powerful (std sintered rotor on a Novak does make more power, but a 13mm doesn't always), just easier to drive...some people will haul ass with them out of the box...some people will just hit more things.
Turbo Joe is offline   Reply With Quote
Old 03-21-2008, 04:11 PM   #23
Super Moderator
 
Grizzbob's Avatar
 
Join Date: Feb 2002
Location: Sand Springs, OK
Posts: 3,063
Trader Rating: 2 (100%+)
Default

I've also been experimenting with the 13mm rotor in my 13.5, but I honestly haven't been able to tell much if any difference either way, mine might run a TICK cooler, but it also feels like it needs to be geared up a bit more(about 1 tooth on the pinion) to get the same lap times. And because it's offered NO advantage at my local track, we haven't bothered to set any rule about them(& we're not a ROAR track so that doesn't matter). Only reason I've continued to run it is temperature, & I think the main reason mine runs a bit cooler is because my original rotor is a bit old, I think it's weakened a little bit, so I can save a bit of wear & tear on it by using the 13mm one(already had one before we knew anything about it) for club racing. But rules or not, for 13.5's & 17.5's, I wouldn't bother with anything but the regular sintered rotor, just a waste of money to use the 13mm one.....
__________________
Bob Seay
Tamiya TRF417, TA05v.2, TRF211XM, M-05ver.2R, XRAY X12, Associated B5m Factory Lite

Go Pokes!!!
Grizzbob is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
WTB new version novak 3.5 up to 6.5 with 5mm or 13mm rotor icantdrivetc5 R/C Items: Wanted to Buy 0 08-20-2008 06:18 AM
[FS] Novak 13.5 & 17.5 BL Motors + 13mm rotor JFCJ R/C Items: For Sale/Trade 9 03-28-2008 07:47 PM
Novak GTB & 13mm rotor brians11 R/C Items: For Sale/Trade 4 02-06-2008 04:34 PM
Novak 13mm rotor and regular 12.3 rotor wallstreet Electric On-Road 1 01-09-2008 12:55 PM
Novak 13mm Sintered Rotor syndr0me Electric On-Road 96 09-30-2007 12:26 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 10:27 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