R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 12-19-2002, 04:05 PM   #1
Tech Regular
 
fasterdanu's Avatar
 
Join Date: Dec 2002
Location: the bat cave
Posts: 428
Cool tip's with comm lathes

any posts about comm truing hi performance tips or stuff for first timers.
fasterdanu is offline   Reply With Quote
Old 12-19-2002, 06:52 PM   #2
Tech Adept
 
-CriMinaL- |RC's Avatar
 
Join Date: Nov 2002
Location: Sydney, AUS
Posts: 246
Send a message via AIM to -CriMinaL- |RC Send a message via Yahoo to -CriMinaL- |RC
Default

When skimming the comm try to take off as little as possble..

when the 3 slots open up throw away the arm because its on its last legs
-CriMinaL- |RC is offline   Reply With Quote
Old 12-19-2002, 07:04 PM   #3
Tech Regular
 
Join Date: Jan 2002
Location: kankakee,IL
Posts: 266
Default

The info I have gotten in the past is once a comm reaches .270 in diameter,it can`t be cut smaller without risking it spinning apart in the motor.
saints1115 is offline   Reply With Quote
Old 12-19-2002, 07:07 PM   #4
Tech Adept
 
-CriMinaL- |RC's Avatar
 
Join Date: Nov 2002
Location: Sydney, AUS
Posts: 246
Send a message via AIM to -CriMinaL- |RC Send a message via Yahoo to -CriMinaL- |RC
Default

that could be true...

not sure though, but yes once comm reaches certain size the segments wil fly off and damage the motor
-CriMinaL- |RC is offline   Reply With Quote
Old 12-19-2002, 07:20 PM   #5
Tech Elite
 
mike_Webb's Avatar
 
Join Date: Aug 2001
Location: SOMEWHERE OVER THE RAINBOW
Posts: 3,128
Send a message via AIM to mike_Webb
Default

I think Big Jim recommends .260 or lower and you will damage your Bit and you could throw a wind.
mike_Webb is offline   Reply With Quote
Old 12-19-2002, 08:57 PM   #6
Tom
Tech Regular
 
Tom's Avatar
 
Join Date: Nov 2002
Location: Australia-mate
Posts: 349
Default

u can kill ur bit if u take to little of and dont let it bit in a bit

.270 is what trinity say on web site i think
Tom is offline   Reply With Quote
Old 12-19-2002, 09:28 PM   #7
dtm
Tech Champion
 
dtm's Avatar
 
Join Date: Aug 2001
Location: HKG
Posts: 7,551
Send a message via ICQ to dtm
Default

fasterdanu- It is better to cut the comm more often than leaving the comm until it is "pear" shaped before cutting. For 8-9T motor this is around 4-6 packs (kinda depends on brushes as well).

If you consider one marking (on the Hudy) as one cut.....then, in general, if you need more than 3-4 cuts to clean up the motor each time, you should consider cutting more often.
dtm is offline   Reply With Quote
Old 12-19-2002, 09:38 PM   #8
Tech Elite
 
Join Date: Aug 2001
Posts: 2,583
Default

Quote:
Originally posted by dtm
fasterdanu- It is better to cut the comm more often than leaving the comm until it is "pear" shaped before cutting. For 8-9T motor this is around 4-6 packs (kinda depends on brushes as well).

If you consider one marking (on the Hudy) as one cut.....then, in general, if you need more than 3-4 cuts to clean up the motor each time, you should consider cutting more often.

What happens if you don't have a HUDY? What do you use to judge?
Sydewynder is offline   Reply With Quote
Old 12-19-2002, 09:40 PM   #9
Tech Champion
 
Manticore's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Heaven
Posts: 9,999
Default

Quote:
Originally posted by Sydewynder
What happens if you don't have a HUDY? What do you use to judge?
twister suggested to go by half or quater marking
Manticore is offline   Reply With Quote
Old 12-19-2002, 09:42 PM   #10
Tech Adept
 
unknown's Avatar
 
Join Date: Oct 2002
Location: Center Line, MI
Posts: 226
Send a message via AIM to unknown
Default

let me ask this question...

do you guys have your own comm lathes? or does your local track/hobby shop have ones you can use?
unknown is offline   Reply With Quote
Old 12-19-2002, 09:50 PM   #11
Tech Elite
 
Join Date: Aug 2001
Posts: 2,583
Default

Quote:
Originally posted by unknown
let me ask this question...

do you guys have your own comm lathes? or does your local track/hobby shop have ones you can use?
I have my own.
Sydewynder is offline   Reply With Quote
Old 12-19-2002, 09:52 PM   #12
Tech Elite
 
Join Date: Aug 2001
Posts: 2,583
Default

Quote:
Originally posted by Manticore
twister suggested to go by half or quater marking
Markings? What markings? I guess Orion doesn't believe in markings.

Last edited by Sydewynder; 12-19-2002 at 09:54 PM.
Sydewynder is offline   Reply With Quote
Old 12-19-2002, 09:58 PM   #13
Tech Champion
 
Manticore's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Heaven
Posts: 9,999
Default

Quote:
Originally posted by Sydewynder
Markings? What markings? I guess Orion doesn't believe in markings.
use your dremel to put some marking on the knob !
Manticore is offline   Reply With Quote
Old 12-19-2002, 10:02 PM   #14
Tech Elite
 
Join Date: Aug 2001
Posts: 2,583
Default

Quote:
Originally posted by Manticore
use your dremel to put some marking on the knob !
After I Dremel mark my Comm Lathe, you motors will be the first ones I'll do.
Sydewynder is offline   Reply With Quote
Old 12-19-2002, 10:10 PM   #15
Tech Champion
 
Manticore's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Heaven
Posts: 9,999
Default

Quote:
Originally posted by Sydewynder
After I Dremel mark my Comm Lathe, you motors will be the first ones I'll do.
I will let you do my johnson !
Manticore is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
comm lathes BDRMBULLY Rookie Zone 5 05-03-2007 12:56 PM
Help with comm lathes TL_XXX-S_racer Electric On-Road 56 12-28-2005 12:23 PM
Comm Lathes RCNitroDude999 Electric On-Road 3 02-12-2005 06:06 AM
Automatic Comm Lathes Kennedy Australian Racing 3 02-04-2004 01:22 AM
Comm Lathes Dan the Man Australian Racing 34 04-24-2003 06:18 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 02:20 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