R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 03-25-2008, 07:53 PM   #931
Tech Master
 
beta bob's Avatar
 
Join Date: Mar 2007
Posts: 1,101
Trader Rating: 2 (75%+)
Default

Quote:
Originally Posted by joe of loath View Post
yep. thats how i blew myself up with a miniature pipe bomb last week lol
You get a guy from the United Kingdom on this thread and you die of laughter!
__________________
Team Terribles---------2009 post of the year
"Cant you read Mopar???He said that he drives a T-max 2.5!!!!"
Spec classes are for communist
beta bob is offline   Reply With Quote
Old 03-26-2008, 12:46 AM   #932
Tech Adept
 
16skyline's Avatar
 
Join Date: Nov 2006
Posts: 195
Default

Will anyone share what they put on there comms liquid mixed together polishes? If you don't want to place on here send me a PM
16skyline is offline   Reply With Quote
Old 03-26-2008, 01:21 AM   #933
Tech Master
 
Join Date: Jan 2004
Location: Outside of Crook County Illinois
Posts: 1,949
Trader Rating: 2 (100%+)
Send a message via AIM to A-Ko
Default

Quote:
Originally Posted by SirSwiftAlot View Post
Lets talk about zapping these motors who out there has a motor zapper and would like to share there input and or results.
I have had similar motors zapped and.... well... it is not the miricle you might think it is.
__________________
Jeffrey
teamgravityrc.com - motivrc.com
USVTA National Points Member #101
A-Ko is offline   Reply With Quote
Old 03-26-2008, 01:45 AM   #934
Tech Elite
 
rough512's Avatar
 
Join Date: May 2002
Posts: 3,454
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by A-Ko View Post
I have had similar motors zapped and.... well... it is not the miricle you might think it is.
No improvement even after zapping?
rough512 is offline   Reply With Quote
Old 03-26-2008, 05:48 AM   #935
Tech Master
 
Join Date: Nov 2003
Location: Huntsville, Alabama
Posts: 1,660
Trader Rating: 44 (100%+)
Default

Quote:
Originally Posted by A-Ko View Post
I have had similar motors zapped and.... well... it is not the miricle you might think it is.
A lot of it depends on what class you are running. If you are running sedans where you can control the gearing, then it's not as much of a difference (but it still helps....ask anyone who runs RED DOT power!). But if you are running a fixed gearing class like mini, it makes all the difference in the world.

Of course this is all assuming the mad scientist with the zapper knows what he's doing. As Grampa said, you can screw a motor up easier than getting one to run better. I played with one and got it to spool up like a 27-turn motor on a no-load dyno, but put it in the car and it can't get out of it's own way. Luckily you can always turn it around and try again.
__________________
M03R, M04L, TT-01R Type E, Midnight Pumpkin,
Lunch Box, CC-01 Wrangler, SC10.2FT,
SC10B, Traxxas Slash
minimadman2003 is offline   Reply With Quote
Old 03-26-2008, 08:42 AM   #936
Tech Elite
 
rccardr's Avatar
 
Join Date: Aug 2003
Location: The Secret Underground Laboratory
Posts: 2,353
Trader Rating: 8 (100%+)
Default

The problem with zapping these motors is that you also wind up zapping the arm, and that increases amp draw and decreases efficiency- so you need to figure out a way to offset that. There is no single, quick, or simple answer to making these motors really hum- it's all about balance, and not every motor responds in the same way.
__________________
I've never lost.
I've just been a little bit behind when time ran out...

RED DOT MOTORS- Fastest Titan 12T and silver can 540 motors in the known galaxy!
rccardr is offline   Reply With Quote
Old 03-26-2008, 11:01 AM   #937
Tech Master
 
Join Date: Jan 2004
Location: Outside of Crook County Illinois
Posts: 1,949
Trader Rating: 2 (100%+)
Send a message via AIM to A-Ko
Default

Quote:
Originally Posted by rough512 View Post
No improvement even after zapping?
A few years ago I went to the TCS nats that had up to 3 hand-out rebuildable motors. I decided to pull a favor and had Big Jim zap them for me. In total he zapped 4 motors, one was well used the others new. Using a gause meter and his expertise, none of the motors really changed and I confirmed that later on my dyno. One motor's magnetic field was out of alignment and he re-aligned it.

He told me the way to look at magnets is like a cup, they can only fill up so much then then they over flow. Maybe more expensive motors can be effected from multiple zappings, it really depends on the magnets used in each motor.

If you are looking for speed, zapping is not the end all miracle.... it "might", make a difference if the motor, chassis, driveline, driver are totally optimized and you are looking for a tinge more but with these cheap magnets I wouldn't think so.
__________________
Jeffrey
teamgravityrc.com - motivrc.com
USVTA National Points Member #101
A-Ko is offline   Reply With Quote
Old 03-26-2008, 03:19 PM   #938
Tech Elite
 
Join Date: Oct 2006
Posts: 2,367
Default

Picked up a Fantom dyno a few weeks ago and you know how it is with new toys. Put every motor I had on it to test. Found out a # of things after playing with the dyno for a bit.
1. A Muchmore type motor tester is not a good tool to gauge performance.
2. Max rpm is not a reliable gauge of motor performance on the track.
3. How quickly a motor spools up under load is way more reliable.
4. A high rpm motor can be a real dog on the track. My 33,000 rpm black can is a good example. It now sits in bad motor heaven.
5. Simply cleaning the comm will give you as much or more of an increase in power #'s as any of the more common "tuning" tricks. Frankly, I was amazed at how much better a motor was with a clean comm.
6. I am not a motor expert.
7. Getting smarter tho.
Granpa is offline   Reply With Quote
Old 03-26-2008, 07:18 PM   #939
Tech Elite
 
rough512's Avatar
 
Join Date: May 2002
Posts: 3,454
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by rccardr View Post
The problem with zapping these motors is that you also wind up zapping the arm, and that increases amp draw and decreases efficiency- so you need to figure out a way to offset that. There is no single, quick, or simple answer to making these motors really hum- it's all about balance, and not every motor responds in the same way.

But isn't the armature made of soft laminated iron? It does not retain its magnetism very well. And even if it does, the normal motor operation will demagnetize it very quickly. Each pole loses/changes magnetic polarity every 60degrees rotation. I think even a 1minute runtime would kill any residual magnetism in the armature.

I could be wrong of course.
rough512 is offline   Reply With Quote
Old 03-26-2008, 07:31 PM   #940
Tech Regular
 
Join Date: Feb 2007
Posts: 268
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Granpa View Post
Picked up a Fantom dyno a few weeks ago and you know how it is with new toys. Put every motor I had on it to test. Found out a # of things after playing with the dyno for a bit.
1. A Muchmore type motor tester is not a good tool to gauge performance.
2. Max rpm is not a reliable gauge of motor performance on the track.
3. How quickly a motor spools up under load is way more reliable.
4. A high rpm motor can be a real dog on the track. My 33,000 rpm black can is a good example. It now sits in bad motor heaven.
5. Simply cleaning the comm will give you as much or more of an increase in power #'s as any of the more common "tuning" tricks. Frankly, I was amazed at how much better a motor was with a clean comm.
6. I am not a motor expert.
7. Getting smarter tho.
Granpa, What is your technique for cleaning the comm?

Thanks, Pete
Pete Thomas is offline   Reply With Quote
Old 03-26-2008, 07:34 PM   #941
Tech Master
 
Join Date: Nov 2003
Location: Huntsville, Alabama
Posts: 1,660
Trader Rating: 44 (100%+)
Default

If zappers didn't work, I wouldn't think you'd see anyone shelling out $600+ for them, nor would the big name motor tuners bother shipping the 50 lb bricks out to the big races. Granted they work much better on a rebuildable motor, but some have found ways to massage the silvercans on them too. It's not a simple task, and I'm sure many a motor was tossed until finding the sweet spot.

Unfortunately I haven't found the technique yet.
__________________
M03R, M04L, TT-01R Type E, Midnight Pumpkin,
Lunch Box, CC-01 Wrangler, SC10.2FT,
SC10B, Traxxas Slash
minimadman2003 is offline   Reply With Quote
Old 03-26-2008, 11:07 PM   #942
Tech Elite
 
Join Date: Oct 2006
Posts: 2,367
Default

Quote:
Originally Posted by Pete Thomas View Post
Granpa, What is your technique for cleaning the comm?

Thanks, Pete
I use Brasso, Mother's chrome polish, or Brite Boy in one of those oil bottles with a needle tip. Put a pinion on the motor, squeeze a little polish on the comm, roll the pinion back and forth on the work bench. Flush out well with water or motor cleaner.
The best motor man I know uses comm drops and runs his at low voltage for about 1/2 hr. Tried it and it works great, but would only have the patience to do that between race weekends.
Granpa is offline   Reply With Quote
Old 03-26-2008, 11:59 PM   #943
Tech Fanatic
 
kidsid99's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jun 2005
Location: Memphis
Posts: 792
Trader Rating: 53 (100%+)
Default

Quote:
Originally Posted by Granpa View Post
I use Brasso, Mother's chrome polish, or Brite Boy in one of those oil bottles with a needle tip. Put a pinion on the motor, squeeze a little polish on the comm, roll the pinion back and forth on the work bench. Flush out well with water or motor cleaner.
The best motor man I know uses comm drops and runs his at low voltage for about 1/2 hr. Tried it and it works great, but would only have the patience to do that between race weekends.
What type of comm drops??
kidsid99 is offline   Reply With Quote
Old 03-27-2008, 10:07 AM   #944
Tech Addict
 
-KilleR-'s Avatar
 
Join Date: Mar 2007
Location: Malaysia
Posts: 521
Trader Rating: 15 (94%+)
Default

Quote:
Originally Posted by Granpa View Post
I use Brasso, Mother's chrome polish, or Brite Boy in one of those oil bottles with a needle tip. Put a pinion on the motor, squeeze a little polish on the comm, roll the pinion back and forth on the work bench. Flush out well with water or motor cleaner.
The best motor man I know uses comm drops and runs his at low voltage for about 1/2 hr. Tried it and it works great, but would only have the patience to do that between race weekends.
Do you still clean them with water or motor cleaner after the comm drops process?
-KilleR- is offline   Reply With Quote
Old 03-27-2008, 03:27 PM   #945
Tech Elite
 
Join Date: Oct 2006
Posts: 2,367
Default

Quote:
Originally Posted by -KilleR- View Post
Do you still clean them with water or motor cleaner after the comm drops process?
Motor cleaner. I used Tribo, but don't know what Doc uses.
Granpa is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
X-ray T2, Tips and Tricks trailranger Electric On-Road 4 05-17-2008 02:44 PM
Silver Can (Mabuchi) Motor Tricks miller1990 Electric On-Road 1 03-06-2007 10:06 PM
Co27 motor tuning tips, hints, or tricks schmidt452 Electric Off-Road 16 11-08-2006 11:04 PM
tips and tricks XXX-NT streetstock Electric Off-Road 2 05-13-2005 10:50 AM
Tips And Tricks rctc3 Electric On-Road 36 03-10-2002 10:54 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 08:53 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