NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Other Technical Forums > Advanced Fabrication and Engineering
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

Advanced Fabrication and Engineering For when your build is going off the charts. Wildly modified vehicles and straight up buggies welcome.

Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old December 7th, 2008, 23:25
crazyjim's Avatar
crazyjim crazyjim is offline
NAXJA Forum User
 
Join Date: Jan 2008
Location: SoCal
Posts: 7,361
Those of you with home built long arms...

What are you using as a cross member? What's considered STRONG and sturdy to actually connect a true 4 link long arm setup to?
Reply With Quote
  #2  
Old December 8th, 2008, 09:02
squirrel80 squirrel80 is offline
NAXJA Forum User
 
Join Date: Jun 2008
Location: Prescott Valley, AZ
Posts: 1,105
Re: Those of you with home built long arms...

Try BDS. I bought the long arm upgrade, but you can buy just the crossmember kit. Also I do not have a picture, but they have a transfer case skid that bolts to the crossmember too.





Reply With Quote
  #3  
Old December 8th, 2008, 10:17
Jeff 98XJ WI Jeff 98XJ WI is offline
 
Join Date: Apr 2003
Location: Butternut, WI
Posts: 1,250
Re: Those of you with home built long arms...

I used a 2x6 boxed section of 3/16 steel in my last rig with a single upper link attached to the box steel and it held up fine. I mounted it flush with the bottom of the frame and used ONE large bolt through a sleeve in the frame per side as well as four bolts through a plate into the stock crossmember mounting nut serts. My new rig is going to use a 2x4x3/16" boxed steel crossmember also mounted flush to the bottom of the frame rails. I'm not using a plate on the bottom this time though. I offset a plate into the ends of the crossmember so the bolt heads will be above the bottom of the frame rail. I'm also going to use a couple other bolts to tabs welded to the inside of a plated frame rail. Others have also used 2x4 boxed steel successfully mounted in various ways. Jeff
Reply With Quote
  #4  
Old December 8th, 2008, 10:18
besthaticouldo's Avatar
besthaticouldo besthaticouldo is offline
NAXJA Forum User
 
Join Date: Aug 2008
Location: St Louis, Missouri
Posts: 2,454
Re: Those of you with home built long arms...

Quote:
Originally Posted by squirrel80 View Post
Try BDS. I bought the long arm upgrade, but you can buy just the crossmember kit. Also I do not have a picture, but they have a transfer case skid that bolts to the crossmember too.

dammmmmmmmmmmn that looks beeeeeeeeeeefy
Reply With Quote
  #5  
Old December 8th, 2008, 11:53
Justpunchit's Avatar
Justpunchit Justpunchit is offline
NAXJA Member #1291
 
Join Date: Jun 2005
Location: Jaffrey, NH
Posts: 1,854
Re: Those of you with home built long arms...

Have you looked into the TNT belly skid to start off of?
Reply With Quote
  #6  
Old December 8th, 2008, 11:57
squirrel80 squirrel80 is offline
NAXJA Forum User
 
Join Date: Jun 2008
Location: Prescott Valley, AZ
Posts: 1,105
Re: Those of you with home built long arms...

Quote:
Originally Posted by Justpunchit View Post
Have you looked into the TNT belly skid to start off of?
TNT is not a true 4-link.
Reply With Quote
  #7  
Old December 8th, 2008, 12:15
RCman's Avatar
RCman RCman is offline
Life is big block
 
Join Date: Dec 2004
Location: Mass / Vermont
Posts: 10,140
Re: Those of you with home built long arms...

Quote:
Originally Posted by squirrel80 View Post
Quote:
Originally Posted by Justpunchit View Post
Have you looked into the TNT belly skid to start off of?
TNT is not a true 4-link.
Not only that, but isn't it quite expensive for just the crossmember?

There was a thread a few weeks back about a similar topic.
Anyway, I started with a section of 2"x4"x3/16" wall and cut and modified it to work. The end plates are 1/4" and have mount up using five 1/2-13TPI G8 bolts. There a a few ways to do it, all have been debated and have their pros/cons.
If I was to start again and I had not already had the 2"x4", I'd use 2"x5" to make it a little easier with the trans mount.

Here's how mine sits without the suspension mounts and the trans mount on top:


The ends are angled down in order for my skidplate setup to clear.



The lower arms will mount about 2" inward from the beginning of that slope.
Reply With Quote
  #8  
Old December 8th, 2008, 12:24
aparke4's Avatar
aparke4 aparke4 is offline
NAXJA Forum User
 
Join Date: Apr 2005
Location: Atlanta, Ga
Posts: 2,255
Re: Those of you with home built long arms...

wow nice stuff guys

i ended up tying my upper mounts ( i have a radius arm system -- RK WJ lower arms with daystar upper adjustables) which are for a WJ into my uni frame stiffeners... so they are welded to uni frame and tied into uni-stiffener... not as strong or cool as those crossmembers shown but they are beef --- ideally i should have started with a crossmember --- much strong and better placement for upper links
Reply With Quote
  #9  
Old December 8th, 2008, 12:27
Justpunchit's Avatar
Justpunchit Justpunchit is offline
NAXJA Member #1291
 
Join Date: Jun 2005
Location: Jaffrey, NH
Posts: 1,854
Re: Those of you with home built long arms...

I know it's not a true 4 link I wasn't talking about getting it with mounts. You can get the skid with it not set for radius arms. Bill does have a point it is up there in price though.
Reply With Quote
  #10  
Old December 8th, 2008, 14:56
crazyjim's Avatar
crazyjim crazyjim is offline
NAXJA Forum User
 
Join Date: Jan 2008
Location: SoCal
Posts: 7,361
Re: Those of you with home built long arms...

Sweet ideas here! I like the BDS idea, pending price on the cross member, even still I think it's an excellent starting point to know the arms are in the correct positions!
Reply With Quote
  #11  
Old December 8th, 2008, 15:51
squirrel80 squirrel80 is offline
NAXJA Forum User
 
Join Date: Jun 2008
Location: Prescott Valley, AZ
Posts: 1,105
Re: Those of you with home built long arms...

Quote:
Originally Posted by crazyjim View Post
Sweet ideas here! I like the BDS idea, pending price on the cross member, even still I think it's an excellent starting point to know the arms are in the correct positions!
Not cheap. I think it is about $350 with hardware. BDS will have you go through a local distributor to buy. You will have to call them to get a hold of pricing.
Reply With Quote
  #12  
Old December 8th, 2008, 16:09
crazyjim's Avatar
crazyjim crazyjim is offline
NAXJA Forum User
 
Join Date: Jan 2008
Location: SoCal
Posts: 7,361
Re: Those of you with home built long arms...

Quote:
Originally Posted by squirrel80 View Post
Not cheap. I think it is about $350 with hardware. BDS will have you go through a local distributor to buy. You will have to call them to get a hold of pricing.
Just checked BDS's site, $311 and some change, so plus tax etc you were pretty on the nose.

Not sure if correct here, but if I build my own cross member, the hardest part is going to be mounting options correct? Especially for me, since I won't be able to wrap the mount around the frame rail, because I've got TNT stiffeners and T&J tube stiffeners already in place. What are some options guys?
Reply With Quote
  #13  
Old December 8th, 2008, 21:05
Begster's Avatar
Begster Begster is offline
NAXJA Forum User
 
Join Date: Dec 2005
Location: Cape Cod/Boston, Mass
Posts: 10,497
Re: Those of you with home built long arms...

I priced out just the TNT crossmember with mounts about 2 years ago, they said it was about $450 for just the crossmember, without shipping.
Reply With Quote
  #14  
Old December 8th, 2008, 22:08
Prerunner Prerunner is offline
NAXJA Forum User
 
Join Date: Mar 2007
Location: Bay City, MI
Posts: 77
Re: Those of you with home built long arms...

Quote:
Originally Posted by RCman View Post
I am making one very similar to this for a couple of friends, but using 2x5 x 3/16. My biggest difference is that the center will drop out like clayton's does. The system will be fully bolt on and also use mounting plates like rusty's off road.

My set up was bolted and then welded in.

Reply With Quote
  #15  
Old December 8th, 2008, 22:58
JeepFreak21's Avatar
JeepFreak21 JeepFreak21 is offline
NAXJA Forum User
 
Join Date: Jun 2002
Location: Cameron Park, CA
Posts: 7,822
Re: Those of you with home built long arms...

I based mine off of 2"x5"x.250 wall, but I don't have my suspension hung off it yet. Here's what I have so far: http://www.bsfab.net/?cat=16
Billy
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
home built long arms tayman Modified Tech Discussion 99 March 5th, 2008 18:14
home built posi-lock MT Mike Modified Tech Discussion 4 February 6th, 2008 15:13
home made long arms gill41083 Modified Tech Discussion 120 December 4th, 2007 15:26
Home Built Roof Rack AZ DESERT RAT Modified Tech Discussion 9 August 22nd, 2004 23:52
Home built traction bar??? Matt99XJ Modified Tech Discussion 12 August 20th, 2003 20:00


All times are GMT -7. The time now is 11:32.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014