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Old 07-08-2003, 09:33 AM   #1 (permalink)
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Rockwell (non-2.5-ton) Specs?

Anybody know of any websites that list the specs for the entire line of Rockwell axles? I've got some 3-ton Planetaries that I'm trying to find some details on. Thanks.
Chris
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Old 07-08-2003, 11:36 AM   #2 (permalink)
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btt
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Old 07-08-2003, 01:57 PM   #3 (permalink)
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Can't help you, but I'd like to see pics of those axles if you got them.

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Old 07-09-2003, 06:20 AM   #4 (permalink)
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See if this works...
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Old 07-09-2003, 06:24 AM   #5 (permalink)
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Here's another - those are 36/12.50/15 TSL's, for reference.
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Old 07-09-2003, 06:51 AM   #6 (permalink)
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Chris I couldn't open that file you sent of those axles.
But I can see them now. they look prety cool. See if you can get me the diamiter of the disk and how far the caliper sticks out past the edge of it.
The ram setup is prety unique they should hold up just fine being a planitary.
I dont know if you can use that center mount on top or not.

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Old 07-09-2003, 07:03 AM   #7 (permalink)
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John, the file was around 4Meg with all four pics in it, so it may have just been too big to go through. A couple other guys had trouble seeing them too.
The bolt pattern is 8 on 15 or 8 on 15.5 (something around there). The discs look to be approximately 19.5" diameter. Travis said he got 20" rims to fit, though (perhaps just by using really low backspacing - I don't know?). Not sure if you could make something to fit or not?
Travis also told me that each of the rams is a two-way Ram, so each axle could actually get by with just one of them.
Chris
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Old 07-09-2003, 07:17 AM   #8 (permalink)
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I will call travis and find out what happened when he tried it.
I would run botrh rams since you have them. Is it possible to make the disk a smaller diamiter and move the caliper in more?

John
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Old 07-09-2003, 07:23 AM   #9 (permalink)
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What are you planning on putting those into? They look like the ground clearance is a bit low for a 4x4 app.

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Old 07-09-2003, 07:26 AM   #10 (permalink)
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John,
Travis told me he runs Toyota calipers and made the rims using stock 3-ton Planetary wheel centers on double-beadlock military wheels.
Patooyee, the axles will be going under a stretched TJ with 16.00R20 XL's.
Chris
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Old 07-09-2003, 07:38 AM   #11 (permalink)
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Quote:
Originally posted by JOHNS351C
Is it possible to make the disk a smaller diamiter and move the caliper in more?

John
I'll look at this - it may be possible. The rotor is very thick and is solid so you might be able to trim it?
Chris
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Old 07-09-2003, 07:49 AM   #12 (permalink)
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So that is not a stock brake setup? Travis put that on it using a toyota caliper?

John
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Old 07-09-2003, 07:51 AM   #13 (permalink)
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Sorry - I wasn't very clear. Travis runs 3-ton Planetaries on one of his buggies. On his, he runs Toyota calipers. Mine still have the stock calipers on them. He said the Toyota stuff saves a lot of weight and works fine for him, due to the dia. of the rotor.
Chris
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Old 07-10-2003, 07:13 AM   #14 (permalink)
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Another shot next to a 2.5-ton Rockwell for comparison...
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Old 07-10-2003, 09:12 AM   #15 (permalink)
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So, seeing as how the hubs have planetary reduction, what is the final ratio between the diff and the planetaries? Also, what does that sucker weigh?
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Old 07-10-2003, 09:54 AM   #16 (permalink)
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I was told 8.76:1 (4.6x:1 just in diff), ~900 lbs. I'm going to pull apart the Planetaries and check the gearing for myself, though, one of these weekends.
Chris
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Old 07-10-2003, 10:17 AM   #17 (permalink)
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900 lbs for ONE axle....you gotta be nuts....that thing literally is a boat anchor....another thing is make sure that it is a standard directional pinion.....make sure the pinion turns the same way to drive your wheels forward...some of those things are screwey....
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Old 07-10-2003, 10:31 AM   #18 (permalink)
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GO 4LO, those axles are nice...i brought them to Travis's house for em. They are huge, with those in the bed of my truck, CTD3500, it was ridin low! Good luck and keep us posted.
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Old 07-10-2003, 10:35 AM   #19 (permalink)
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Quote:
Originally posted by tradin1
GO 4LO, those axles are nice...i brought them to Travis's house for em. They are huge, with those in the bed of my truck, CTD3500, it was ridin low! Good luck and keep us posted.
Any chance you know who I might contact then to find more info? Thanks .
Chris
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Old 07-10-2003, 11:49 AM   #20 (permalink)
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These axles are with out fiddy trees
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Old 07-10-2003, 01:46 PM   #21 (permalink)
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Those being ex military axles, shouldn't you be able to get an
Army maintenance manual with all the stats for 'em somewhere? Maybe someone that works in a motor pool at a base somewhere could help...
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Old 07-10-2003, 06:48 PM   #22 (permalink)
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Re: Rockwell (non-2.5-ton) Specs?

Quote:
Originally posted by GO 4LO
Anybody know of any websites that list the specs for the entire line of Rockwell axles? I've got some 3-ton Planetaries that I'm trying to find some details on. Thanks.
Chris
  • The rockwell info. # 800-525-3500, this will get you to the axle div., have all your axle # ready , great poeple. steve differential eng. inc. here's a pic
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Old 07-11-2003, 05:43 AM   #23 (permalink)
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Thanks, Steve! Is that a 5-ton housing? Looks good to me .
Chris
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Old 07-11-2003, 07:12 PM   #24 (permalink)
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This a rockwell axle front 9,000 lbs. from a F800 narrowed for a pickup. steve
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