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Old February 27th, 2010, 02:13 PM   #1
Motorcitydak
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Default Looking for a full floating 9 inch?

Just got this thing for a car I am building, but it could be used on a 4x4 too. It is a Moser circle track axle. The bearings are about the same size my the ones on my D44 and this thing is really light weight (<100# for the assy) but still really strong. It costs around $1000 shipped for everything I have and Moser can put the leaf spring mounts on if you want. I ordered mine with completely bare tubes. This one has the 5x4.5bp and it can also be 5x4.75 or 5x5, I am not sure about 5x5.5 but you could always use an adapter if needed. Check it out







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Old February 27th, 2010, 02:33 PM   #2
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so what's the tech question?
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Old February 27th, 2010, 02:37 PM   #3
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I think their is an offroad fabricating company that makes a 9" housing.



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Old February 27th, 2010, 02:38 PM   #4
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What size are the tubes and what size axles can the spindles fit?
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Old February 27th, 2010, 06:11 PM   #5
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I am just trying to put something else out there that you guys may not have seen or thought about. When I started searching for a FF 9 to run all the offroad stuff I was finding was +2k and 8 lug. You show me another place you can get one w/ 5x4.5bp custom made to your specs for 1k smartass


95, the tubes are 3 inch and 0.188iirc. Its 31 spline diff and outers, I dunno if they could make it for 35 but you can always ask. The axle shafts are included in the kit BTW
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Old February 28th, 2010, 06:48 PM   #6
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U can get one from speedway moters with everything but a third for $650 comes in 58" or 60" widths. axles are like 90 bucks and 10 min to replace as well.
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Old March 1st, 2010, 09:03 AM   #7
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Couldn't find the one you are talking about. This was as close as I could see but its at $800
http://www.speedwaymotors.com/Winter...-End,4895.html

Also know of these, but they are more than the Moser unit
http://colemanracing.com/store/shopexd.asp?id=4892
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Old March 6th, 2010, 02:08 PM   #8
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The outer is 24 spline, sorry about that
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Old March 12th, 2010, 12:18 AM   #9
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what would be the benefit of running a full floating 9in? i mean the only thing that i could see maybe would be weight. It has the lowes pinion location of any axle and your still only 9in ring gear. i guess the pinion support on the end of the pinion would be the other benefit. Just curious why one wouldnt use a dana 60 or 14 bolt.
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Old March 12th, 2010, 01:56 AM   #10
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Quote:
Originally Posted by pigfat View Post
what would be the benefit of running a full floating 9in? i mean the only thing that i could see maybe would be weight. It has the lowes pinion location of any axle and your still only 9in ring gear. i guess the pinion support on the end of the pinion would be the other benefit. Just curious why one wouldnt use a dana 60 or 14 bolt.
A 9" with 31 spline axles is near the same strength as a standard dana 60, with about 1/3 the weight.

Having a full floater is beneficial since it allows the axle shafts to do only one job which is transfer power instead of also helping support vehicle weight. Another nice thing about a FF is if you do break a shaft they only thing that will happen is you won't have power to that wheel, but the wheel will still support the same load and run true. Ever saw a 9" SF with a broken axle shaft? You tend to get about 15 degrees of camber on your rear tire. On top of that you now only have a 3/16" thick plate supporting the weight of the vehicle and trying to keep the shaft in the housing.

Here is a good article comparing the two - http://www.savagesun4x4.com/enter/vi...9_jeep_tj.html
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Old March 29th, 2010, 09:32 PM   #11
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The 9" is not close to the strength of the 60. It is a full 3/4" smaller on the ring gear circumferance and the tubing walls are 3/8" pipe. The 1/8" wall of the 9" is marginal when you talk about severe spring wrap up or supporting weight or blasting it off of a rock. I understand the concept of full floating axles. The weight of the 60 in my opinion doesnt justify all the extra work you will go thru to get a full floating 9" when its not as good as a common 60. Thats my point to the question.
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Old March 31st, 2010, 08:41 PM   #12
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Item #: 91048323 at speedway motors

I like the light weight, narrow, low cost and strength, Cheaper then narrowing up another 9in and redaly available replacement shafts, easy disk brake conversion and huge aftermarket support. 14 bolt hands down if your going for strength above all.
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