R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 09-03-2010, 08:29 AM   #1
Tech Regular
 
lewis666's Avatar
 
Join Date: Dec 2009
Location: suffolk, england
Posts: 345
Send a message via MSN to lewis666
Default rear suspension arms binding?

hi there,

i keep having this trouble with my back suspension arms binding on my losi 8ight 1.5 and not moving freely an dropping down when the shocks aren't attached.

i know it is caused by the hinge pin and suspension arm but it is ok once i clean it out but when i come to cleaning my car from a meeting they bind?

is there anything i can do to prevent this?

many thanks

lewis
__________________
Durango DEX410R, BCE Losi 8ight 1.5 (radical 621t), Durango DESC410R on the way!
radical engines- www.gotnitroonline.com
Got nitro team driver
lewis666 is offline   Reply With Quote
Old 09-03-2010, 08:36 AM   #2
Tech Master
 
FLHX1550's Avatar
 
Join Date: Mar 2010
Location: Wyoming, MN
Posts: 1,712
Trader Rating: 11 (100%+)
Default

Well if the arms have just a little bit of wear, they can let dirt in and bind also. If you can squeeze some small o-rings in around the pins where they meet the arms it may help.

Might be easier to start with fresh arms and mounts though.
__________________
JConcepts - TKO - RW Mods - B-Fast - MODX Motors & Batteries - Skare OCD Designs
FLHX1550 is offline   Reply With Quote
Old 09-03-2010, 08:57 AM   #3
Tech Rookie
 
Join Date: Sep 2010
Posts: 19
Default

you will probely need new arms if i was u i would
thomasgoalie2 is offline   Reply With Quote
Old 09-03-2010, 09:06 AM   #4
Tech Master
 
Lille-bror's Avatar
 
Join Date: Jul 2009
Location: Frederikshavn, Denmark
Posts: 1,792
Default

Hi.

I've had the same problem on my buggy. In my case the metal suspension pins rusted a little. I removed the rust and put on a little bit of oil on the before refitting and I've no binding anymore.
__________________
www.xray-shop.dk www.northtq.com
Best regards Bjarne Petersson, Denmark
XRAY / FX Racing Engines / OS Speed / HPI / Byron / HUDY / Proline / Sanwa MT4s / Sav÷x servos / Ultimate
I miss you Amy...
Lille-bror is offline   Reply With Quote
Old 09-03-2010, 09:26 AM   #5
Tech Elite
 
Stubbs's Avatar
 
Join Date: May 2009
Location: Raleigh, NC
Posts: 2,177
Trader Rating: 57 (100%+)
Default

Generally after every race weekend, I'll pull all of my suspension arms off, run a reamer through the holes in the arms, and buff my hinge pins with a Scotch-Brite pad. I've found that it's just a small coating of grime that causes my arms to bind a little. Doing this as part of my post-race cleaning routine keeps them moving smoothly.

I've also used a little dry graphite lube with good results. Check your local locksmith shop if you have trouble finding it elsewhere.
__________________
Mike Stubblefield - www.capefearraceway.com
"If you're not racing to have fun, then you're doing it WRONG."
"All you need is WD-40 and Duct Tape. If it moves, and it shouldn't, use the Duct Tape. If it doesn't move, and it should, use the WD-40."
Stubbs is offline   Reply With Quote
Old 09-03-2010, 10:18 AM   #6
Tech Champion
 
Tony Newland's Avatar
 
Join Date: May 2005
Location: Utah
Posts: 5,764
Trader Rating: 50 (100%+)
Default

get a bag of pipe cleaners and a can of pledge it'll be a huge investment at about $5 and better than anything on the market..... keeps everything moving freely in the most dusty conditions all day
__________________
Schumacher Factory Team - Core RC - Highest Servos - Avid - Lunsford - Bellgate Distributors - Jconcepts - www.Prime-hobby.com - IRCR
Tony Newland is offline   Reply With Quote
Old 09-03-2010, 10:56 AM   #7
Tech Elite
 
Join Date: Mar 2009
Location: Aurora, Colorado
Posts: 3,644
Default

another case could be the outer hinge pins are bent, or the hinge pin holder could be bent.I have never had a problem with arms that was not one of these problems.
__________________
TLR - Spektrum - Horizon - TLR 8ight 4.0 - TLR 8ight-T 4.0 - TLR 22 4.0 - Orion
token is offline   Reply With Quote
Old 09-03-2010, 11:08 AM   #8
Tech Champion
 
Trevor Williams's Avatar
R/C Tech Elite Subscriber
 
Join Date: Feb 2009
Location: Illinois
Posts: 8,218
Trader Rating: 195 (100%+)
Default

+1^
dirt is not going to keep your arms from falling without a shock attached, sounds like you have bent hingepins.
__________________
RC10-B6d | RC10-B64d
SmacTrac
#WeAreAE #ReedyPower #AE4Life
Trevor Williams is offline   Reply With Quote
Old 09-03-2010, 11:16 AM   #9
Tech Champion
 
Trevor Williams's Avatar
R/C Tech Elite Subscriber
 
Join Date: Feb 2009
Location: Illinois
Posts: 8,218
Trader Rating: 195 (100%+)
Default

Quote:
Originally Posted by Tony Newland View Post
get a bag of pipe cleaners and a can of pledge it'll be a huge investment at about $5 and better than anything on the market..... keeps everything moving freely in the most dusty conditions all day
great idea man!!!
__________________
RC10-B6d | RC10-B64d
SmacTrac
#WeAreAE #ReedyPower #AE4Life
Trevor Williams is offline   Reply With Quote
Old 09-03-2010, 11:40 AM   #10
Tech Regular
 
lewis666's Avatar
 
Join Date: Dec 2009
Location: suffolk, england
Posts: 345
Send a message via MSN to lewis666
Default

hi,

thanks for the replies.

i will have a look into bent hingepins but it has been happening for a few weeks. i give my car a good going over before each meeting. so i clean my car and check suspension movement, anything bent or broken.

and when i go to clean my car after a meeting the rear suspension arms are binding where as before the meeting they where moving fine.

could it be a mixture of dirt and oil from the exhaust because it only seems to be the suspension arm behind the engine and exhaust, i think it is the left rear suspension arm?

if the hingepins aren't bent then i will try that oring idea because i have some old losi shock orings.

many thanks

lewis
__________________
Durango DEX410R, BCE Losi 8ight 1.5 (radical 621t), Durango DESC410R on the way!
radical engines- www.gotnitroonline.com
Got nitro team driver
lewis666 is offline   Reply With Quote
Old 09-03-2010, 07:44 PM   #11
Tech Lord
 
Integra's Avatar
 
Join Date: Dec 2006
Posts: 12,482
Trader Rating: 8 (100%+)
Send a message via MSN to Integra
Default

O ring's or the little foams donuts don't do anything if you ask me, been there done that and it Didn't help. I feel some tracks dirt makeup is just more prone to making thing's bind up and squeak over a day/weekend of racing.
__________________
TNS Driver - Radio Post - Blue Groove Apparel - Team Panther - Hitec - Losi - W.E.D. Paint - Clockwork Fuel - Competition Heat - SUMO Racing - Tekin - Team Terribles - M2C Racing - Matrix Concepts - Kal Gard - BuKu Power - DE Racing -
Integra is offline   Reply With Quote
Old 09-03-2010, 07:52 PM   #12
Tech Fanatic
 
Join Date: Sep 2008
Posts: 864
Trader Rating: 21 (100%+)
Default

I'd rebuild the shocks and in the process completely clean ever thing and check if any of the shafts are bent even slightly. sometimes you can't tell just by looking at them I normally roll them on a table and you will know right away if they are bent. after that refill the shocks and check if they bind at all before installing them.
TopGearRC is offline   Reply With Quote
Old 09-03-2010, 11:59 PM   #13
Tech Regular
 
lewis666's Avatar
 
Join Date: Dec 2009
Location: suffolk, england
Posts: 345
Send a message via MSN to lewis666
Default

Quote:
Originally Posted by Integra View Post
O ring's or the little foams donuts don't do anything if you ask me, been there done that and it Didn't help. I feel some tracks dirt makeup is just more prone to making thing's bind up and squeak over a day/weekend of racing.
that is my problem. dirt gets in between the suspension arm and the hinge pin causing it to bind. i don't think it is a bent hinge pin because once i have cleaned the hingepin and the hole in the suspension arm in works fine.

i will try some new rear suspension arms and see how i get on

many thanks

lewis
__________________
Durango DEX410R, BCE Losi 8ight 1.5 (radical 621t), Durango DESC410R on the way!
radical engines- www.gotnitroonline.com
Got nitro team driver
lewis666 is offline   Reply With Quote
Old 09-04-2010, 06:36 AM   #14
Tech Elite
 
Join Date: Sep 2001
Posts: 3,022
Trader Rating: 36 (100%+)
Default

Another thing to look at, when you secure arm holders/diff case together, just screw tight enough to close the diff case. You want to have a tiny, tiny bit of front to back play between the arm and the holders. If you screw them together too tightly, they will cause the arms to bind.
NitroOB4You is offline   Reply With Quote
Old 09-04-2010, 08:12 AM   #15
Tech Regular
 
lewis666's Avatar
 
Join Date: Dec 2009
Location: suffolk, england
Posts: 345
Send a message via MSN to lewis666
Default

Quote:
Originally Posted by NitroOB4You View Post
Another thing to look at, when you secure arm holders/diff case together, just screw tight enough to close the diff case. You want to have a tiny, tiny bit of front to back play between the arm and the holders. If you screw them together too tightly, they will cause the arms to bind.
hi there,

i will try that but there is a washer between the suspension arm and the rear hinge pin brace, should i remove the washer and see if that helps?

many thanks

lewis
__________________
Durango DEX410R, BCE Losi 8ight 1.5 (radical 621t), Durango DESC410R on the way!
radical engines- www.gotnitroonline.com
Got nitro team driver
lewis666 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
EPMTs check in here. (a subsidiary of TNT) overtki11 Singapore R/C Racers 55470 05-07-2017 11:57 PM
Mugen MTX-3 university_dave Nitro On-Road 17237 12-30-2012 12:16 PM
Serpent suspension too tight SnaykeByte Nitro On-Road 9 11-17-2005 03:23 PM
NTC3 Rear Toe Ball Cups rynotheman Nitro On-Road 11 05-25-2004 12:41 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 06:28 PM.


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