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Sanity Check for Price on Moser One-Piece Axles? |
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White70JavelinSST
Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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The weak link when doing more than AMC engineered into the cars rear axle is undoubtedly the two piece axle. The differential ring and pinion are plenty tough to handle more power than people think. The axle and how it's retained are the issue. years ago a guy road raced a pretty much stock Javelin at BlackHawk Farms Raceway, I read his story. He ended up using Ford 9" ends on the axles and retainers, IIRC. I wish I could find the article. If anyone knows where to find this article, please post a link, it might help Scrappy.
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70 Javelin SST, second owner, purchased 1972
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Red Devil
AMC Addicted Joined: Jul/10/2007 Location: Canada Status: Offline Points: 1743 |
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Ray Larson's "The Story of My Engine". His issues with the stock AMC20 were after he " upgraded" to aftermarket one-piece axle shafts. They would work out of the housing during the race as the pressed-on bearings and retainers didn't locate the shaft positively like the stock setup. Fixed by going to 9" ends for more robust bearings and retention. Did bend some stock shafts going over curbs on the track, hence, desire for something stronger. Hope this helps, RD
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tomj
AMC Addicted Joined: Jan/27/2010 Location: earth Status: Offline Points: 7522 |
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After my wonderful experience with the Ford 7.5" axle in my roadster (what was a 1961 American) if I have to lift a finger to adapt an AMC rear, for a non-stock application, I'll buy a brand new custom made Ford 7.5" axle, narrowed and geared as I like it, and just weld on suspension adapters. And get rear disc brakes and parking brakes that connected to the '61's parking setup by making my own equalizer (one afternoon).
The 7.5" is 75 lbs lighter than the big axle. If you go the junkyard route, they're cheap, people toss them. They'd be fine for sixes and light V8s. One piece axles. Use the dual-pattern U-joint to connect to an AMC driveshaft. Last of "our" type is 1998. THe thing is, getting one narrowed is easy. Only the tubes need work, you can buy axles of whartever length you want and they're not pricey. Of course AMC wheels bolt on perfectly. Not AMC, but it's not a part that changes the character of the car in any way (other than better brakes). |
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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Scrappy
AMC Nut Joined: Jun/26/2019 Location: Alpharetta, GA Status: Offline Points: 255 |
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Those are good points, but beside the axle itself, I don't want to deal with another set of brakes (it has aftermarket discs), getting a drive shaft made, and having to possibly have wheel fitment issues with the new wheels I already have.
Edited by Scrappy - Sep/25/2021 at 12:49pm |
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Scrappy
AMC Nut Joined: Jun/26/2019 Location: Alpharetta, GA Status: Offline Points: 255 |
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Another benefit of the 7.5" over the 9" is less parasitic drag. Depending on who you ask, the 9" wastes an extra ~5% in power (some say 2%, some say 10%, who knows?), which is merely a side effect if you need the strength of a 9", but if you don't, it's just another detriment.
This is why I got a custom 12-bolt from Moser for my '57 Chevy, instead of a 9" which would have been less expensive. I'm never going to need more than the 600 ft-lbs this 12-bolt is supposedly rated for, especially since I don't drag race (slicks or not). |
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gremlin 72
AMC Apprentice Joined: Jul/25/2010 Location: Lake Bluff, Ill Status: Offline Points: 83 |
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Just received moser axles this month for my gremlin, from moser. Axles $385.00 sealed bearings $70.00 bearing retainer $17.50 and inner & outer seal kit $20.00 Total being $492.50 plus shipping and tax. Hope this helps.
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72 jolly green gremlin X
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Scrappy
AMC Nut Joined: Jun/26/2019 Location: Alpharetta, GA Status: Offline Points: 255 |
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Thanks, just ordered mine for a total of ~$545 for everything.
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Scrappy
AMC Nut Joined: Jun/26/2019 Location: Alpharetta, GA Status: Offline Points: 255 |
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IMPORTANT UPDATE 10/01/2021: MOSER AMC 20 "CAR" AXLES ARE "NOT AVAILABLE" WITH TAPERED BEARINGS I
received my axles and the bearings ARE NOT TAPERED. In short, when I called, Shane at
Moser said they "don't do" tapered bearings on the car axles and
"doesn't know" why they are able to do that on the Jeep axles (even
though everything is the same except for the bolt circle & flange). I am going to see if there's something I can do to fit the SET 9 bearings and will update with a separate thread if so.
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tomj
AMC Addicted Joined: Jan/27/2010 Location: earth Status: Offline Points: 7522 |
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What's the axle-retention mechanism then? C-clip style, like the small Ford? Those work fine. If high-axle-twist-torque is your overrriding concern, drag-race style, C-clip has no disadvantage. C-clip weakness, such as it is, is all in turns, repeated and high-G turns.
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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6PakBee
Supporter of TheAMCForum Charter Member Joined: Jul/01/2007 Location: North Dakota Status: Offline Points: 5454 |
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Please elaborate.
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Roger Gazur
1969 'B' Scheme SC/Rambler 1970 RWB 4-spd Machine 1970 Sonic Silver auto AMX All project cars. Forum Cockroach |
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