R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 01-24-2004, 04:44 PM   #1
Tech Initiate
 
tr6_guy's Avatar
 
Join Date: Jan 2004
Location: Chicago, IL
Posts: 34
Default Question about TC3 steering racks

The steering rack on my TC3 always seems to get very rough in its movement. I've taken it apart a number of times now and cleaned all the parts but after a few runs its all sticky again. It seems pretty free at the ends but near the center points is where I seem to have the most trouble. As a result, the car has trouble re-centering after a turn. Is this to be expected with the TC3 steering or is there some trick I'm missing? I race exclusively on carpet so, dirt from asphalt should not be an issue. Pulling out the steerng rack and cleaning it is a bit of a pain so I'd like to avoid having to do it all the time if possible.
tr6_guy is offline   Reply With Quote
Old 01-24-2004, 04:49 PM   #2
Moderator
 
StephenSobottka's Avatar
 
Join Date: Jul 2002
Location: Milwaukee, WI
Posts: 3,267
Trader Rating: 8 (100%+)
Send a message via AIM to StephenSobottka
Default

I noticed my rack had a slight pinch in the middle right from the bag, so i sanded the inside with fine sandpaper until the stick was gone. check to make sure there is no part of the kingpin studs coming thru the rack when they are screwed in also.
__________________
~~Stephen Sobottka~~
SMC Racing
StephenSobottka is offline   Reply With Quote
Old 01-24-2004, 04:50 PM   #3
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,838
Trader Rating: 13 (100%+)
Default

do yo run a digital servo?
protc3 is offline   Reply With Quote
Old 01-24-2004, 05:08 PM   #4
Tech Initiate
 
tr6_guy's Avatar
 
Join Date: Jan 2004
Location: Chicago, IL
Posts: 34
Default

No digital servo. My car is pretty much stock RTR so I still have the crappy Hi Tech servo that came with it.
tr6_guy is offline   Reply With Quote
Old 01-24-2004, 05:09 PM   #5
Moderator
 
StephenSobottka's Avatar
 
Join Date: Jul 2002
Location: Milwaukee, WI
Posts: 3,267
Trader Rating: 8 (100%+)
Send a message via AIM to StephenSobottka
Default

That is one of the problems why it centers funny everytime
__________________
~~Stephen Sobottka~~
SMC Racing
StephenSobottka is offline   Reply With Quote
Old 01-24-2004, 05:14 PM   #6
Moderator
 
Speedo's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Posts: 3,431
Default

Yeah, Hitec servos are notorious for having centering problems.
Speedo is offline   Reply With Quote
Old 01-24-2004, 05:41 PM   #7
Tech Initiate
 
tr6_guy's Avatar
 
Join Date: Jan 2004
Location: Chicago, IL
Posts: 34
Default

OK so, I need a new servo. With a new servo would the slight stickness in the rack be less of an issue?
tr6_guy is offline   Reply With Quote
Old 01-24-2004, 05:42 PM   #8
Tech Initiate
 
Join Date: Dec 2003
Location: Seattle, WA
Posts: 37
Send a message via AIM to SAM776
Default

We have been having some simular TC3 problems. What is the feeling about a JR Z590M would that be a good replacement? for a rookie learning to drive ( IE hitting stuff)
Thanks, Sam
SAM776 is offline   Reply With Quote
Old 01-24-2004, 06:21 PM   #9
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,838
Trader Rating: 13 (100%+)
Default

the rack is kind sticky unless you prep it.i cut out all the burrs and then i polish the inside with mothers plastic polish by using a q-tip in a cordless drill.it may take a little while but it is smoothe as glass when you are done.after you do this you should be able to just blow the rack out with some compressed air.hope this helps
protc3 is offline   Reply With Quote
Old 01-24-2004, 07:00 PM   #10
Tech Elite
 
howard hudson's Avatar
R/C Tech Charter Subscriber
 
Join Date: Nov 2002
Location: some damned place called Iowa
Posts: 4,245
Default

Quote:
Originally posted by tr6_guy
OK so, I need a new servo. With a new servo would the slight stickness in the rack be less of an issue?
I did away with the stock rack and got a trinity aluminum rack off there web site 26.00 bucks and its blue real smooth I like it.
__________________
what the heck is r/c car??? ( said in your best redneck voice)

'OL BUZZARD FARMING (lol)
howard hudson is offline   Reply With Quote
Old 01-24-2004, 07:19 PM   #11
Tech Apprentice
 
Join Date: May 2003
Posts: 67
Trader Rating: 4 (100%+)
Default Re: Question about TC3 steering racks

Quote:
Originally posted by tr6_guy
The steering rack on my TC3 always seems to get very rough in its movement. I've taken it apart a number of times now and cleaned all the parts but after a few runs its all sticky again. It seems pretty free at the ends but near the center points is where I seem to have the most trouble. As a result, the car has trouble re-centering after a turn. Is this to be expected with the TC3 steering or is there some trick I'm missing? I race exclusively on carpet so, dirt from asphalt should not be an issue. Pulling out the steerng rack and cleaning it is a bit of a pain so I'd like to avoid having to do it all the time if possible.
When it happenes to me (won't re-center and feels rough), usually the servo saver screw has backed out and is rubbing the chassis. I just tighten it up thru the access hole on the bottom of the chassis and all is good. I check it periodically now so that it do not start rubbing at the wrong time.
LJae is offline   Reply With Quote
Old 01-24-2004, 09:15 PM   #12
Tech Master
 
davepull's Avatar
 
Join Date: Oct 2003
Location: Orange Park, Florida
Posts: 1,180
Default

don't oil the bearings it will attrach anykind of dirt. also tighten the servo saver all the way down and cut the excess thread off the bolt so it won't rub the shaft then put a drop of CA in it.
davepull is offline   Reply With Quote
Old 01-24-2004, 09:29 PM   #13
Tech Regular
 
Me+RC=$$$'s Avatar
 
Join Date: Jun 2003
Location: Arizona
Posts: 422
Trader Rating: 1 (100%+)
Send a message via AIM to Me+RC=$$$ Send a message via Yahoo to Me+RC=$$$
Default

I had a similar problem with mine. Check the black nylon nuts that hold the bushings down, even if they are just a TAD too tight it will cause that to happen. Fixed my car, good luck!
Me+RC=$$$ is offline   Reply With Quote
Old 01-24-2004, 09:55 PM   #14
Tech Addict
 
Neil's Avatar
 
Join Date: Oct 2003
Location: me..me..me
Posts: 583
Send a message via MSN to Neil
Default

The jr 590m is a great servo for that app. Plenty of power very strong gear train and it centers well. The only problem is its slow but for the money you cant beat it.
Neil is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
XXX-CR Steering Question WHOBEE Electric Off-Road 6 09-03-2008 06:46 PM
Prs Pinions 3 racks full Free Ship!! omnis85 R/C Items: For Sale/Trade 11 06-05-2008 06:29 PM
Buggy Steering Question aN4rK1 Electric Off-Road 5 05-04-2007 10:14 AM
Steering Question Michael Barch Electric On-Road 11 12-23-2005 03:00 PM
Pit Table Racks mike ivy Electric On-Road 6 10-30-2005 05:40 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 12:34 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net