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Old 11-01-2005, 10:10 AM   #1 (permalink)
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Guys that run 9" axles, check this out...

http://www.truehi9.com/thrustblock2.html

I thought this was pretty interesting.
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Old 11-01-2005, 10:49 AM   #2 (permalink)
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yep hi9 has that thrust block and even a place for a second thrust block if neccessary. thats the advantage to their third member design i think.
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Old 11-01-2005, 10:52 AM   #3 (permalink)
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Quote:
Originally Posted by wilf
yep hi9 has that thrust block and even a place for a second thrust block if neccessary. thats the advantage to their third member design i think.

Id consider it more of a necessity with their design, at least when used in the rear.
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Old 11-01-2005, 11:49 AM   #4 (permalink)
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Why more so than a Currie hp9 with the 8.8 sets in the rear?
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Old 11-01-2005, 12:00 PM   #5 (permalink)
 
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I find that kind of funny. There's a guy up here who's been doing that for years. He put one in a 9" that I used to have in my mud rail. He learned this from some ol' drag racer from the US.
Only difference I see is that he used brass instead of steel. It worked well, you just had to turn it in now and again as the brass wore.
Patent pending?? The ol' guy musta missed the boat on that one.
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Old 11-01-2005, 12:42 PM   #6 (permalink)
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My Eaton H072 centersection has one of these, and it is circa 1967. Nothing new.
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Old 11-02-2005, 09:19 PM   #7 (permalink)
 
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We're not the first!

Quote:
Originally Posted by hairy kanary
Patent pending?? The ol' guy musta missed the boat on that one.
Not the first to control or support the ring gear it self,
But the the first in a hi pinion and to control deflection in the ring & pinion both.
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Old 11-02-2005, 09:27 PM   #8 (permalink)
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i dont get it big dan?
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Old 11-02-2005, 11:07 PM   #9 (permalink)
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Quote:
Originally Posted by Davethorik
My Eaton H072 centersection has one of these, and it is circa 1967. Nothing new.
Was the pinion above axle centerline??? Maybe in regular rotation sets it had one. Everything about the Hi9 unit is new...

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Old 11-02-2005, 11:48 PM   #10 (permalink)
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Talking

does it ride on the ring gear all the time using the backside of the ring gear as a bearing surface or is it more of a tight clearance that when deflection starts it contacts then?
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Old 11-03-2005, 01:02 AM   #11 (permalink)
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Quote:
Originally Posted by Capt. Nemo
Was the pinion above axle centerline??? Maybe in regular rotation sets it had one. Everything about the Hi9 unit is new...
Yeah, regular rotation. I still don't see how it is a "new & improved" idea though???



can't see it too well, but it's there.
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Old 11-03-2005, 06:25 AM   #12 (permalink)
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Doesn't that create a lot of heat, especially with the thrust block being above the oil level in the diff?

Also curious how much variance you wind up with in your ring gear bolt torque, since it looks like you are forced to line up the flats with the edge of the carrier.
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Last edited by oldjeep; 11-03-2005 at 06:27 AM.
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Old 11-03-2005, 07:00 AM   #13 (permalink)
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Quote:
Originally Posted by TRKSMTH
Not the first to control or support the ring gear it self,
But the the first in a hi pinion and to control deflection in the ring & pinion both.

How is that going to stop pinion gear deflection?

Just by design, if you have pinion deflection in ANY nine inch, you have something wrong.
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Old 11-03-2005, 08:05 AM   #14 (permalink)
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You betcha boys, this snake oil can cure all your ills!!
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Old 11-03-2005, 08:09 AM   #15 (permalink)
 
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Quote:
Originally Posted by XJ_ranger
does it ride on the ring gear all the time using the backside of the ring gear as a bearing surface or is it more of a tight clearance that when deflection starts it contacts then?
The thrust block Don't run on the back of ring gear at all times. Yes, tight clearance, is what the thrust blocks job is doing to keep the ring gear from deflection
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Old 11-03-2005, 08:23 AM   #16 (permalink)
 
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[QUOTE=Davethorik] I still don't see how it is a "new & improved" idea though???
The improvement is 9" didn't have this, and they didn't use them in hi pinions. I'm not saying we though of this first! Just that we're using the combo to control deflection.
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Old 11-03-2005, 08:27 AM   #17 (permalink)
 
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Quote:
Originally Posted by zachv
Why more so than a Currie hp9 with the 8.8 sets in the rear?
To make it way fawking stronger that's why.
(9" has an extra bearing for support on the pinion + the thrust block = way more strongerer than a Currie hp9 with 8.8's) Currie's is not recommended in anything larger than a jeep. My oppinion is that it would get tweaked with large tires in a jeep.
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Old 11-03-2005, 08:28 AM   #18 (permalink)
 
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so when I change the design but put it in the same place can I get a patent too?
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Old 11-03-2005, 08:33 AM   #19 (permalink)
 
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[QUOTE=JEEPRZ]How is that going to stop pinion gear deflection?

The 9" was great to start with because it already had a third bearing, so that the pinion already had support with the extra bearing to keep from deflecting. That was already done. Just like a 14 bolt we also like! Mike
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Old 11-03-2005, 08:41 AM   #20 (permalink)
 
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Oregon WTF?

Last edited by Blown; 11-03-2005 at 08:51 AM.
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Old 11-03-2005, 08:47 AM   #21 (permalink)
 
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Quote:
Originally Posted by 70cyclone
so when I change the design but put it in the same place can I get a patent too?
Some times you can improve something and get a patent to cover it, it's been done many times. But we felt that we did if first in the hi pinion and it's the most needed in the rear with a hi pinion, so thats why we're trying!
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Old 11-03-2005, 09:47 AM   #22 (permalink)
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Quote:
Originally Posted by oldjeep
Doesn't that create a lot of heat, especially with the thrust block being above the oil level in the diff?

Also curious how much variance you wind up with in your ring gear bolt torque, since it looks like you are forced to line up the flats with the edge of the carrier.
1. Nope. It only touches if the ring gear deflects anyway.

2. You do NOT need to line up the flats. The ring gear bolt heads can be tightened up to any position.
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Old 11-03-2005, 09:49 AM   #23 (permalink)
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Quote:
Originally Posted by zachv
Why more so than a Currie hp9 with the 8.8 sets in the rear?
Or a HP Dana 60 rear.
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Old 11-03-2005, 10:00 AM   #24 (permalink)
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Originally Posted by 4x401cj
You betcha boys, this snake oil can cure all your ills!!
1. Would you say a HP Dana 60 with smaller gear teeth and no thrustblock is better?

2. Snake oil or not, is has been well over a year and 100 units out with ZERO failures. Plus we have beefed up the case since the original unit to make them stronger yet. Yes someone will break one, but IF one breaks to every hundred out there we feel that we can live with that sort of a success rate.
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Old 11-03-2005, 12:55 PM   #25 (permalink)
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HI-9 Design

I totally agree! This is no nobel prize winner but a very effective, not to mention very simple, way of improving the ever so popular 9". Not to mention that it is in a high pinion design which serves us short wheelbase, rock smashing guys nicely.

By applying for a patent it does not gaurantee that they will be granted one but what it does do is secure there position in the market. In other words currie can't go copy one now and starting selling it as a competive product even though they haven't legally be granted the patent. Hi-9 can now distinguish itself in this respect which is essential when they don't have a well established and well respected name such as Currie. Just my thought.
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