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  #1  
Old 04-23-2013, 03:46 PM
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What I've been up to...



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  #2  
Old 04-23-2013, 10:31 PM
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44BZ 44BZ is offline
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So what's it gonna be? Is it set up to swivel in the middle? I'm sure whatever you've got planned will be epic, just like the 6x6
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  #3  
Old 04-23-2013, 11:56 PM
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oooooh, what can it be for? Is the 6x6 going to be sold to make room for this project?
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  #4  
Old 04-24-2013, 05:06 AM
threepiece threepiece is offline
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I find it interesting that I too have been working on such a project. I had a design much like yours but I couldn't commit myself to separating the frame near it's most loaded point. I am now building a touque limiting sub-frame instead.
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  #5  
Old 04-24-2013, 09:58 AM
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Quote:
Originally Posted by threepiece188
I find it interesting that I too have been working on such a project. I had a design much like yours but I couldn't commit myself to separating the frame near it's most loaded point. I am now building a touque limiting sub-frame instead.


Keep in mind that the swivel completely eliminates all torsional loads (articulation).

Got any photos of your setup?
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  #6  
Old 04-24-2013, 12:52 PM
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Oolah10293 Oolah10293 is offline
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Where is the driveshaft going to go?
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  #7  
Old 04-24-2013, 04:38 PM
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Quote:
Originally Posted by Oolah10293
Where is the driveshaft going to go?

Over the swivel.
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  #8  
Old 04-25-2013, 04:59 AM
threepiece threepiece is offline
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Quote:
Originally Posted by Mikel
Keep in mind that the swivel completely eliminates all torsional loads (articulation).


Got any photos of your setup?

This is what drew me to this design in the first place however it was dealing with the high bending moment in this area that I could not get comfortable with. It looks like you may have dealt with that issue. I suspect you intend to use this truck in a way that differs from mine. It looks like you have tapered roller bearings and a lock-out feature?

Other than parts for the assembly jig I have nothing tangible at this point.
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FSJ Hybrid build thread: http://www.shopfloortalk.com/forums/...ad.php?t=43332
The generation of the past was appalled with the idea that the government would install a device inside the bodies of its people that would track their performance and influence their behavior, the generation of the near future will insist upon it.

Last edited by threepiece : 04-25-2013 at 05:08 AM.
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  #9  
Old 04-25-2013, 05:09 AM
threepiece threepiece is offline
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Quote:
Originally Posted by Mikel
Keep in mind that the swivel completely eliminates all torsional loads (articulation).
Yes, this is what drew me to the design in the first place however it was dealing with the high vertical bending moment that I could not get comfortable with. It looks like you may have accommodated that issue. I suspect you intend to use this truck in a way that differes from mine.

It looks like you have tapered roller bearings and a lock-out feature?

Got any photos of your setup?
Other than parts for the assembly jig I have nothing tangible at this point.
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The generation of the past was appalled with the idea that the government would install a device inside the bodies of its people that would track their performance and influence their behavior, the generation of the near future will insist upon it.
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  #10  
Old 04-25-2013, 05:20 AM
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Quote:
Originally Posted by threepiece188
This is what drew me to this design in the first place however it was dealing with the high bending moment in this area that I could not get comfortable with. It looks like you may have dealt with that issue. I suspect you intend to use this truck in a way that differs from mine. It looks like you have tapered roller bearings and a lock-out feature?

Other than parts for the assembly jig I have nothing tangible at this point.


I couldn't find tapered roller bearings small enough that had the necessary thrust and radia loading capacities, so I went with a combo of cylindrical needle roller bearings and thrust bearings. The cylindrical needle bearings have a static capacity of 65,000 lbs and the thrust bearings 55,000. If I lifted the (loaded) truck from the swivel, it would still be within the acceptable loading range. The entire assembly is sealed and will be filled with gear oil.
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  #11  
Old 04-25-2013, 07:42 AM
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Looks interesting!
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  #12  
Old 04-25-2013, 10:27 AM
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You are an engineering genius! I hope it doesn't look like this though!
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  #13  
Old 04-25-2013, 10:57 AM
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first thing that came to my mind:

http://en.wikipedia.org/wiki/Gama_Goat
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  #14  
Old 04-26-2013, 11:38 AM
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I was actually thinking of this (below) but flipped on the joint axis for suspension purposes. I studied Mechanical Tech in college so I know what he is getting at. I however could never fabricate something like it!
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  #15  
Old 04-28-2013, 12:21 AM
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Is this going to be another 6X6?
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  #16  
Old 04-28-2013, 04:01 AM
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Quote:
Originally Posted by bigun
Is this going to be another 6X6?

No. It's going to be an M715 with a J cab.
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  #17  
Old 07-07-2013, 01:17 PM
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Driftwood Driftwood is offline
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What's the latest?
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  #18  
Old 07-07-2013, 07:01 PM
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It's going to be very interesting to see what engine torque will do to that frame.
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  #19  
Old 07-07-2013, 07:23 PM
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Quote:
Originally Posted by FSJunkie
It's going to be very interesting to see what engine torque will do to that frame.
I bet not much. I've seen it in person, it's a very stout frame!
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  #20  
Old 07-07-2013, 07:25 PM
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If anything, the swivel will dissipate all torsional stresses.
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