R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 01-30-2007, 11:31 AM   #16
Tech Master
 
gonzo416's Avatar
 
Join Date: Aug 2003
Posts: 1,938
Trader Rating: 39 (98%+)
Default

i can see them making a difference outdoors with high temps but what about indoors on carpet?
gonzo416 is offline   Reply With Quote
Old 01-30-2007, 11:40 AM   #17
Tech Adept
 
darkfox's Avatar
 
Join Date: Oct 2006
Location: Regina, SK, Canada
Posts: 211
Trader Rating: 1 (100%+)
Default

I ran a fan at this last weekends series race and ran an extra tooth on the pinion and came off under my usual temp and threw down an extra .1-.3 of a second off each lap. When it gets down to missing the higher main by milliseconds every little bit helps. Carpet or ashphalt.

A few of us found fans at the LHS on the way to the race and baught them outta fans just to try em out, I won't go back.
__________________
David Temrick
T-Bang the competition! - www.t-bang.ca
XRay T2
TA-05

Regina Fastraxx RC Club - www.fastraxx.ca
darkfox is offline   Reply With Quote
Old 01-30-2007, 12:43 PM   #18
Tech Elite
 
chris moore's Avatar
 
Join Date: Mar 2004
Location: Phx AZ
Posts: 3,780
Trader Rating: 88 (99%+)
Default

Alot depends on the ambent air/track temps, here in the desert the summer air is 110F + and track temps can reach 200F. At those temps even those of us running stock need, really need, a fan on the motor.
chris moore is offline   Reply With Quote
Old 01-30-2007, 12:47 PM   #19
Tech Elite
 
Jack Smash's Avatar
 
Join Date: Aug 2001
Location: Reno, NV
Posts: 2,897
Trader Rating: 29 (100%+)
Default

With those temps I'd put a fan on each tire too!
__________________
Kyosho / Orion / Amain.com / Protek / MIP /
Jack Smash is offline   Reply With Quote
Old 01-30-2007, 02:10 PM   #20
Tech Adept
 
Wayne1one's Avatar
 
Join Date: Jan 2007
Location: Bowie, MD
Posts: 239
Default

We are only dealing with grams of weight, this is not going to place enough stress on the motor to change the temperature + or - any amount of degrees. If this was true you probably would want to clean or replace your bearings on the entire car to keep the drive train running smooth (a restrictive drive train would cause more strain than a few extra grams from a fan ). The positives out way the negatives.
Wayne1one is offline   Reply With Quote
Old 01-30-2007, 09:21 PM   #21
Tech Addict
 
Join Date: Jan 2002
Location: Carlinville IL
Posts: 670
Trader Rating: 6 (100%+)
Default

What are the best fans to use?
dway100 is offline   Reply With Quote
Old 02-03-2007, 06:54 AM   #22
Tech Adept
 
Wayne1one's Avatar
 
Join Date: Jan 2007
Location: Bowie, MD
Posts: 239
Default

try the novak fans, I ran into some problems with the 3racing and the integy fans. After I dropped a new CO27 motor into my car I noticed when I put the fan on the can the fans speed slowed considerably. I tested to diffrent fans with this motor and came to the conclusion that maybe these fans have ball bearings and the magnet in the can is pulling at the bearings causing it to slow. i know this sounds odd but it true I showed at least ten people at the track and everyone came to the same conclusion. I previously had no problems with the fan on older motors such as a Reedy Rage, MVP and Spec 19. Go figure
Wayne1one is offline   Reply With Quote
Old 02-03-2007, 09:33 AM   #23
Tech Addict
 
Skill's Avatar
 
Join Date: Apr 2003
Location: Doncaster, England
Posts: 537
Default

I race 27 turn indoors on carpet and I'm convinced that my fan helps out with brush and comm wear. It just seems to keep the overall temperature of the motor down a little, which is always a good thing.

I think the reason the fan might slow when on the can is because, in effect the fan is a small motor, and the magnetic field from the motor will interfere with the magnets in the fan.
Skill is offline   Reply With Quote
Old 02-03-2007, 10:00 AM   #24
Tech Master
 
Join Date: Mar 2004
Location: Earth
Posts: 1,039
Send a message via ICQ to rcnewb2004
Default

I run a 19T and the fan is awesome in keeping my brush wear down. I would say it is one of the more effective addons to a car. Better than any comm drop!
__________________
Ta04-TRF, EVO 5
Futaba
KO Propo
Spintec
rcnewb2004 is offline   Reply With Quote
Old 02-03-2007, 10:05 AM   #25
Tech Lord
 
UN4RACING's Avatar
 
Join Date: Oct 2006
Location: MODIFIED!
Posts: 13,140
Trader Rating: 22 (100%+)
Default

Personally I think aside from Modified. A fan is just an attempt to over work (or over gear) A motor. Either way over geared is over geared.
The limitation of the motor is over exceeded hot or cold. But better safe than sorry.
Technically geared perfect? Cooler will be more efficient.
So I guess it would be worth it?
Over all less power fade.
UN4RACING is offline   Reply With Quote
Old 02-03-2007, 10:19 AM   #26
Super Moderator
 
Marcos.J's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2003
Location: Semper Fi
Posts: 27,214
Trader Rating: 182 (100%+)
Default

Quote:
Originally Posted by UN4RACING
Personally I think aside from Modified. A fan is just an attempt to over work (or over gear) A motor. Either way over geared is over geared.
The limitation of the motor is over exceeded hot or cold. But better safe than sorry.
Technically geared perfect? Cooler will be more efficient.
So I guess it would be worth it?
Over all less power fade.
i agree ,gear the motor correctly and you wont have any problems with heat
Marcos.J is offline   Reply With Quote
Old 02-03-2007, 10:27 AM   #27
Tech Lord
 
UN4RACING's Avatar
 
Join Date: Oct 2006
Location: MODIFIED!
Posts: 13,140
Trader Rating: 22 (100%+)
Default

Thanks marcos, even in mod you get over 140 to go fast you need to go to a faster motor if you know what I mean?
120 to about 150 max is really about the max on any motor I think.
And at 150 thats pushing it.
UN4RACING is offline   Reply With Quote
Old 02-03-2007, 10:29 AM   #28
Super Moderator
 
Marcos.J's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2003
Location: Semper Fi
Posts: 27,214
Trader Rating: 182 (100%+)
Default

Quote:
Originally Posted by UN4RACING
Thanks marcos, even in mod you get over 140 to go fast you need to go to a faster motor if you know what I mean?
120 to about 150 max is really about the max on any motor I think.
i have my brushless motor (3.5) and it never gets any hotter than 145 degress, and its plenty fast
Marcos.J is offline   Reply With Quote
Old 02-03-2007, 10:34 AM   #29
Tech Lord
 
UN4RACING's Avatar
 
Join Date: Oct 2006
Location: MODIFIED!
Posts: 13,140
Trader Rating: 22 (100%+)
Default

I've done some serious exsperimenting on the 4300's and I agree. When i gear any motor my goal is 130 and never more than 150. I usally end up around 140. I tend to over gear its like some kind of need to go faster.
Lets just say I've demagnitized a few rotor's.
UN4RACING is offline   Reply With Quote
Old 02-03-2007, 10:40 AM   #30
Tech Elite
 
BSchorr's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jun 2004
Location: Sioux Falls, SD
Posts: 4,820
Trader Rating: 92 (100%+)
Send a message via AIM to BSchorr Send a message via Yahoo to BSchorr Send a message via Skype™ to BSchorr
Default

MacrosJ - well no crap, brushless is fast! haha
__________________
Proline ~ Genesis R/C Products ~ First Premier Satellites
BSchorr is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cooling fans for EP On Road DOON!!!! Australian Racing 4 03-28-2007 04:27 PM
Quick ? on Cooling Fans RoostAZ Electric Off-Road 1 07-23-2006 07:35 PM
Motor Cooling Fans..... RED-LINE M03 R/C Items: For Sale/Trade 7 06-23-2006 04:32 PM
Cooling fans RKeasler Electric On-Road 8 09-18-2005 03:13 PM
Cooling fans BillyCaldwell Electric On-Road 11 07-01-2005 07:54 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 09:57 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