Traction bars and wheelbase ???? - Dodge Cummins Diesel Forum
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Cummins Pulling Discussion Pertaining to Cummins Transfer Sled Pulling

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Old 07-27-2008, 03:38 PM   #1 (permalink)
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Traction bars and wheelbase ????

I have 143.5" wheelbase. How long should my traction bars be? Is there any type of formula for this? Thanks in advance!
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Old 07-27-2008, 09:26 PM   #2 (permalink)
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I believe it needs to follow the same angle as the driveline, you will have to figure the math on that, it all depends on your connection point on the rearend.
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Old 07-28-2008, 05:44 PM   #3 (permalink)
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Quote:
Originally Posted by Compcowboy View Post
I believe it needs to follow the same angle as the driveline, you will have to figure the math on that, it all depends on your connection point on the rearend.
I was thinking that, just looking for a few different opinions. Thanks Cowboy
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Old 07-28-2008, 05:53 PM   #4 (permalink)
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i tryed to get mine as leval as possible with out killing the ground clearance....either way they make a huge diff
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Old 07-28-2008, 05:56 PM   #5 (permalink)
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if you are pulling then the longer the better, drag racing go shorter, that is what I have heard. I went long and end is right behind the front doors.
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Old 07-28-2008, 06:25 PM   #6 (permalink)
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Usually right about the back of the cab (longbed). This has been briefly discussed in several of our "ladder bars" or "traction bars" threads. If you search for them, they will show!!

But yeah, about the back of the cab to the middle of the (rear) doors is usually good on a long bed. Shortbeds will be rear of the front doors or so, roughly.

Some pics here to estimate length......
Traction Bars
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Old 07-28-2008, 06:51 PM   #7 (permalink)
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here is a few picts of mine....not a 3rd gen buy you get the poin






dont make fun of the little puff of smoke......i was in mpg mode
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Old 07-28-2008, 06:52 PM   #8 (permalink)
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try this again lol
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Old 07-28-2008, 07:03 PM   #9 (permalink)
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one more time then i quit
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Old 07-28-2008, 09:26 PM   #10 (permalink)
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Thanks for all the info guys. :thumbsup
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Old 07-29-2008, 10:50 PM   #11 (permalink)
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mine are 69" center to center of eye. I have bent or broke them 4 times in 4 pulls. first till bent the 1.25 inch pipe. ok go thicker. 1.25 pipe with 1 inch inside and welded together.
2nd pull: pipe ok, broke both rear heim joints. thought maybe they were weak from previous pull.
3rd pull, broke 1 front and 1 rear heim joint, pipe ok. thought my bump stops werent keeping enough up travel off suspension. fixed that..
4th pull: bigger heim joints. really tight suspension, about 10ft from end of pull in the video you can see them flex up and rest on the frame then when I let off, they roll down to them bottom.

I am going with square tubing now, so we'll see. Everyone has said that I shouldn't be bending them, but??? My friends 2.8 class pulling truck just has 1.5 inch bars and he bent the frame at the dhra pull a couple of years ago in indy, behind the cab.

All I know that this sux. hope we figure it out.
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Old 07-30-2008, 08:10 AM   #12 (permalink)
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Torquet, Post pics of your setup. Mounting points (axle and frame) etc so we can help point you in the right direction.

How thick of pipe are you using? Long bed or short bed?
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Last edited by Hot Stuff; 07-30-2008 at 08:13 AM.
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