Lower Transfer Case Gears |
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11174 |
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Another set of X98 Supers goes out in the mail today. Soon to be two sets operating in the field. |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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hrspwrranch
Member Joined: 02 Aug. 2012 Location: Castle Rock, CO Status: Offline Points: 4 |
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Will these work with overdrive?
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Mark
48 CJ2a 56 Ford F-100 24 Essex RPU 86 Olds 442 |
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hosemonkey143
Member Joined: 10 Mar. 2016 Location: Canada Status: Offline Points: 4 |
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I'm hoping for the same thing! |
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92889
Member Joined: 24 Dec. 2015 Location: Tsawwassen, BC Status: Offline Points: 973 |
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I know you said no tire kickers, but do you have a price posted somewhere for the super gear kit?
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15 Field RCA
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11174 |
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No overdrive. The input gear is smaller than the overdrive bearing.
The X98 supers are $1800 + shipping + your intermediate gear. Please PM me if you want detailed information. Thx |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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92889
Member Joined: 24 Dec. 2015 Location: Tsawwassen, BC Status: Offline Points: 973 |
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Thanks,
That’s a bit out of my price range for what I do with my Jeep. I’m sure it’s worth every penny though. Amazing engineering. Maybe in the future. Thanks for the reply.
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15 Field RCA
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EJOWest
Member Joined: 07 May 2020 Location: Petaluma, CA Status: Online Points: 77 |
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I just went through the Rubicon trail in my M38 with X98 gears. The gears were fantastic to have on the Rubicon!
Edited by EJOWest - 06 Aug. 2022 at 6:16am |
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11174 |
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I was wondering how that was going. Look forward to the video!! |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11174 |
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Hi all,
Due to some changes at work, I've not been able to devote the time I'd like to on this project but I do have some updates: I currently have 13 sets of gears out for cutting and heat treating. Hope to get them back soon but everything is slow these days. This is an intermediate shaft project that I am working on: The idea is to make an intermediate shaft that will set the preload on the bearings perfectly while also acting as a girdle to hold the case together and also to use both sides of the case to support the thrust of the gears rather than only one side which is the way the stock setup works and it is also the way the AA shaft works. In this application, there is a spacer that goes inside the intermediate gear and between the inner races. The length of the spacer is made to make the bearing races snug against both inner sides of the case: ... likewise, the counterbores in the intermediate gear are at a precise depth to create the correct preload. In this picture, you can see shims behind the cups. I used these to dial in the pre-load that I want when everything is pulled together tight.... I use this jack screw to spread the case apart ever so slightly so that i can get the intermediate gear assembly inside the case easier. (see above) The nut on the intermediate shaft only serves to hold everything together. The pre-load is all created by proper shimming. Now that I know how deep to go with the c'bores, I may not even need the shims. I took some skim cuts on both outside surfaces of the case to make them flat and perpendicular to the case bores. The intermediate shaft is made of 4140 pre-hard and has this shoulder to clamp up to the outside of the case and because it is machined to miss the texas pattern, the shaft can't spin in the bore. This is a pic of me spinning the assembly after everything is installed and tightened up. Unlike the AA shaft, this one has a 7/8-14 shaft and nut which are on the back side of the case. I'll have to use a lock nut or castle nut in the finished product. I had been shying away from the tapered bearings because I was afraid that if they get loose, the intermediate gear could get angled more than with the needle bearings but the needle bearings seem to generate a significant amount of heat. hopefully, I can make the case run cooler with these bearings. FYI, Jack Obrein uses a larger bearing in his tapered bearing kit: He is able to do this because he makes the entire cluster gear with a bigger spool in the center. These bearings won't fit in a stock intermediate gear. Thanks for reading. Edited by jpet - 10 Nov. 2022 at 4:10pm |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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43 Flat-Fender
Member Joined: 22 Sep. 2020 Location: Louisville, KY Status: Offline Points: 112 |
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Amazing effort and progress Jeff.
Impressive dedication to the Art and Science of "Going Sloooow".
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Rob
GPW 94445 (DOD 01-25-43) Built in Louisville KY Engine: MB341746 "Faithful Steed" since 1967 |
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duffer
Member Joined: 02 Feb. 2012 Location: Bozeman, MT Status: Offline Points: 1089 |
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More impressive engineering! Wouldn't putting "some" torque on the nut tie both front and back of the case together for more strength and maybe lessen the probability of splitting it? The the stock arrangement and the AA kit obviously do not do that. The original AA kit I bought decades back had a crush sleeve in it between the bearings but that still left the front shaft retainer floating to set the preload.
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1955 3B: 441sbc,AGE 4 speed transmission, Teralow D18w/Warn OD, 4.11:1 D44's/ARB's, glass tub & fenders, aluminum hood/grill, 8274, York OBA, Premier Power Welder; 67 CJ5: 225,T86AA, D18, 4.88's, OD
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11174 |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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SE Kansas 46 CJ-2A
Member Sponsor Member x 3 Joined: 22 Jan. 2016 Location: S.E. Kansas Status: Online Points: 3192 |
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Very similar to the intermediate gear set up on the New Process 205 transfer case used in the 70s by Chevy and Ford.
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46 CJ-2A #64462 "Ol' Red" (bought April 1969)(second owner)(12 V, 11" brakes, M-38 frame, MD Juan tub)
U.S. Coast Guard Chief Petty Officer(ret.) U.S. Army Vietnam veteran and damned proud of it. |
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Roostre
Member Joined: 06 Feb. 2021 Location: Alpine, Ut Status: Offline Points: 6 |
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Wow! Super impressed with your ability to keep making these TCs better and better!
Still loving the gears; in fact they have survived a bearing failure now looking no worse for the wear.
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duffer
Member Joined: 02 Feb. 2012 Location: Bozeman, MT Status: Offline Points: 1089 |
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Soooo, if one has the X98 gear machined for AA's kit, you would need to remachine the race seats deeper for this set up? Are you using the same Timken Set 14 bearings as the AA kit?
And when are these anticipated to hit the market? The X98 project is still on the bench but is on the queue-----------
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1955 3B: 441sbc,AGE 4 speed transmission, Teralow D18w/Warn OD, 4.11:1 D44's/ARB's, glass tub & fenders, aluminum hood/grill, 8274, York OBA, Premier Power Welder; 67 CJ5: 225,T86AA, D18, 4.88's, OD
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11174 |
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… what I don’t know yet is what will happen when this setup is put in the vehicle and wheeled hard a few times. My experience with the AA kit is that it always loosens up a bit and I have to go back at tighten the nut. With this setup, that may not be possible. Idk. Still in R&D. Right now. I’m very busy at work but I plan to get all this in by January and run it at Winter Jamboree. I can make you the shaft, bearing spacer and end cap. You would need to get the shims for your cups I also machined the outside surfaces of my case to make them perpendicular to the case bores. I’m not sure if that is necessary or not. |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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duffer
Member Joined: 02 Feb. 2012 Location: Bozeman, MT Status: Offline Points: 1089 |
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1955 3B: 441sbc,AGE 4 speed transmission, Teralow D18w/Warn OD, 4.11:1 D44's/ARB's, glass tub & fenders, aluminum hood/grill, 8274, York OBA, Premier Power Welder; 67 CJ5: 225,T86AA, D18, 4.88's, OD
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duffer
Member Joined: 02 Feb. 2012 Location: Bozeman, MT Status: Offline Points: 1089 |
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Have you checked to see how much deflection there is in the case when snugged/extended between the intermediate shaft bores?
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1955 3B: 441sbc,AGE 4 speed transmission, Teralow D18w/Warn OD, 4.11:1 D44's/ARB's, glass tub & fenders, aluminum hood/grill, 8274, York OBA, Premier Power Welder; 67 CJ5: 225,T86AA, D18, 4.88's, OD
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