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03-19-2016, 04:53 PM
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#11
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Senior Member
Join Date: Nov 2010
Location: California
Posts: 1,012
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__________________
2006 E350 6.0PSD 5R110, SMB 4X4, RB-50, ARB lockers front/rear, Aluminess galore, AMP steps.
Callsign KK6GIY
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03-20-2016, 12:13 PM
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#12
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Site Team
Join Date: May 2007
Location: Turlock Ca
Posts: 10,407
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That's interesting. SMB told me they use a smaller track bar because as mentioned, they feel leafs really don't require a one. I broke mine several years back but it was at one of the ends. When Deaver did my springs they installed a much beefier bar. I don't know why the larger bar but no issues yet.
__________________
2006 Ford 6.0PSD EB-50/E-PH SMB 4X4 Rock Crawler Trailer
Sportsmobile 4X4 Adventures.......... On and off road adventures
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03-22-2016, 09:30 AM
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#13
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Senior Member
Join Date: May 2007
Location: Washington - Ridgefield
Posts: 4,728
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It appears it fractured at the bend. The crack probably started when the tube was bent and slowly progressed over time and use.
Mike
__________________
Alaska to Key West, Labrador and more
Prostate cancer survivor. See Thread Prostate cancer and Sportsmobiles
2015 VW GTI 2020 Fiat 124 Spider
2012 E250 Hitop camper
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03-23-2016, 03:52 PM
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#14
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Senior Member
Join Date: Nov 2009
Location: Pacific Northwest
Posts: 378
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My guess assumes the rod is supposed to be bent and this is done during the rod manufacture/assembly process using raw tube stock. The manufacturer may not have used heat treatment to relieve stresses built up during the bending process. In iron, this can increase the rate of rusting and pitting. The metal most likely developed interior cracks on the inside bend radius where flaking is evident in the photo.
__________________
2010 Ford E250 5.4L V8 Gas 2WD
SMB Mod RB36 w/PH Prop Stove & Furn Frig 10G Wtr Elect
Silver Bullet
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05-19-2016, 08:09 AM
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#15
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Senior Member
Join Date: Feb 2016
Location: PDX
Posts: 118
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So to continue this topic(sortof).... Why is the trac bar used on this system anyway?
E-van conversions and superdutys are the only place ive ever seen a leaf/tracbar under the front.
My theory is that on the van, the front spring hanger mounts far forward of the last cross member, in the crumple zone part of the frame. Id guess there to be potential for the front hangers to shift sideways, giving bumpsteer.
Maybe the superduty frame has similar leverage?
If this is the case, seem it could be solved with adding a crossmember forward of the hanger, or a heavy duty bumper.
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05-19-2016, 03:10 PM
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#16
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Senior Member
Join Date: Dec 2015
Location: Hillsboro, OR
Posts: 1,371
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If I remember correctly I don't think Ujoint uses a trac bar with its 4" lift. Maybe he could chime in and tell us why.
__________________
2010 E150 5.4, E250 suspension, E350 springs, BFG KO2 265/75/16.
Google Sled Hockey - You won't be disappointed.
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05-23-2016, 07:25 PM
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#17
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Senior Member
Join Date: Feb 2009
Location: AVL NC
Posts: 1,008
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Quote:
Originally Posted by Jsweezy
If I remember correctly I don't think Ujoint uses a trac bar with its 4" lift. Maybe he could chime in and tell us why.
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Its simply a packaging issue, no room unless I make some specific mounts for 4" only. I bet this bar broke because over time the springs have sagged and simply put the bar in a bind. We use an adjustable bar and I don't recommend to even install the trac bar until some miles have been put on the van.
__________________
Chris Steuber
02 E350 7.3 (V4)
17 Focus RS, 90 SHO, 49 CJ2A, 89 LSC, 20 T250 AWD
ujointoffroad.com
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05-23-2016, 10:00 PM
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#18
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Senior Member
Join Date: Dec 2015
Location: Hillsboro, OR
Posts: 1,371
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Quote:
Originally Posted by UJOINT
Its simply a packaging issue, no room unless I make some specific mounts for 4" only. I bet this bar broke because over time the springs have sagged and simply put the bar in a bind. We use an adjustable bar and I don't recommend to even install the trac bar until some miles have been put on the van.
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Thanks for the info! So do you think a trac bar is even an improvement on a 4" leaf spring rig?
__________________
2010 E150 5.4, E250 suspension, E350 springs, BFG KO2 265/75/16.
Google Sled Hockey - You won't be disappointed.
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05-26-2016, 07:21 PM
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#19
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Senior Member
Join Date: Feb 2009
Location: AVL NC
Posts: 1,008
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Sure, it will help but not generally needed.
__________________
Chris Steuber
02 E350 7.3 (V4)
17 Focus RS, 90 SHO, 49 CJ2A, 89 LSC, 20 T250 AWD
ujointoffroad.com
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11-03-2021, 11:44 PM
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#20
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Junior Member
Join Date: Nov 2021
Posts: 2
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Pan bar
I to have experienced the same thing! A clean break in the middle of the suspension bar. It looks like someone cut the.bar with a hack saw. Was the solution ever discovered or reason why a tube made of steel cleanly break in this manner? I am an iron worker of 30 years and never seen anything like this. The only thing is porosity like water in the steel when it was rolled! It’s very odd. New shocks and springs control arms are in good shape as well as the pan bar. Bushings on both ends are good.
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