R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 07-21-2004, 12:42 AM   #1
Tech Master
 
onnetz's Avatar
 
Join Date: Apr 2004
Posts: 1,727
Default ? about using a lathe

I got a good deal on a used cobra 2000 lathe and it is my first lathe..

I have an old trinity 12x2 diamond motor from about 7 yrs ago and figured I would practice on it...

my question is, how do you keep the armature from moving back and forth?

I noticed in the pics that the armature they use fits perfectly between the two blocks....
the one I'm trying to cut has at least 1/2" of play between them.

thanks for any info..
onnetz is offline   Reply With Quote
Old 07-21-2004, 02:41 AM   #2
Tech Elite
 
sosidge's Avatar
 
Join Date: Dec 2001
Location: Bristol, UK
Posts: 3,865
Default

Depending on the lathe's design, you can either add some shims to the armature to space it out, or adjust the blocks that the armature sits on.
sosidge is offline   Reply With Quote
Old 07-21-2004, 03:01 AM   #3
Tech Elite
 
Bugle's Avatar
 
Join Date: Sep 2003
Location: Sydney Australia
Posts: 2,082
Trader Rating: 1 (100%+)
Default

I put one shim on the pinion end of the armature to stop the plastic rubbing on the block, then put a pinion on and position it so there is no noticable endplay and still spins freely.
Bugle is offline   Reply With Quote
Old 07-21-2004, 03:09 AM   #4
Super Moderator
 
Grizzbob's Avatar
 
Join Date: Feb 2002
Location: Sand Springs, OK
Posts: 3,063
Trader Rating: 2 (100%+)
Default

Yes, I do something like that too. I just position the arm in the blocks & then put a teflon shim on the arm's output shaft, & then put a small pinion on top of that(& just LIGHTLY tighten the pinion down, don't push in on it when you tighten down the set screw, so it'll still spin smoothly), that does a good job of preventing the arm from scooting around when I'm cutting....
__________________
Bob Seay
Tamiya TRF417, TA05v.2, TRF211XM, M-05ver.2R, XRAY X12, Associated B5m Factory Lite

Go Pokes!!!
Grizzbob is offline   Reply With Quote
Old 07-21-2004, 03:14 AM   #5
Tech Master
 
onnetz's Avatar
 
Join Date: Apr 2004
Posts: 1,727
Default

thanks.....
so simple, yet effective...
onnetz is offline   Reply With Quote
Old 07-21-2004, 03:26 AM   #6
Tech Master
 
Join Date: Nov 2003
Location: Florida
Posts: 1,154
Trader Rating: 1 (100%+)
Default

Also remember that on the cobra lathe, the slave motor must recieve "reversed voltage" to spin the arm being cut in the correct direction...........
__________________
1/8 Scale: Tekno EB-48.2... Tekin RX-8 GEN-2 W/2050kv... Airtronix M11-X Radio... HiTec HS-7954SH Servo...

1/10 Scale: Associated B-5(rear motor)...Tekin RSX Gen-2 W/8.5t... Savox SC-1258-TG Servo
Joe B is offline   Reply With Quote
Old 07-21-2004, 11:24 AM   #7
Suspended
 
Join Date: Jul 2004
Location: Salem Or
Posts: 88
Send a message via AIM to RcRacerX
Default

You could also use a pen cap to pin the armature to one side or the other.
RcRacerX is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
XXIP Comm Lathe and Orion Quick set lathe vino1 R/C Items: For Sale/Trade 2 01-25-2008 04:35 AM
Trinity Tru Lathe Motor Comm Cutter Lathe maximum R/C Items: For Sale/Trade 4 05-14-2007 04:56 PM
XIPP Super Lathe 3 / (pics) comm lathe diamond bit evostyle R/C Items: For Sale/Trade 8 12-01-2006 12:53 PM
Motor Lathe (Integy Xipp X-Mod Super Lathe) Geppetto R/C Items: For Sale/Trade 15 01-27-2006 05:10 PM
Tire Lathe, Motor Dyno, Comm Lathe For Sale 17Mark71 R/C Items: For Sale/Trade 8 06-05-2005 01:07 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 06:24 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