Stub axle tips
Thread Starter
Instructor
Joined: Nov 2006
Posts: 115
Likes: 6
From: Carlyle IL
Stub axle tips
I saw Lars posted about stub axle tip wear modifications.
If anyone has done this mod, I have a full machine shop with a Rockwell hardness tester, what material did you used for the tips.
If anyone has done this mod, I have a full machine shop with a Rockwell hardness tester, what material did you used for the tips.
Le Mans Master
Joined: Jun 2019
Posts: 7,658
Likes: 2,470
From: Indiana
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,391
From: At my Bar drinking and wrenching in Lafayette Colorado
It was 4140 with post-machine heat treat to Rc48. Anything in the 48-to-mid-50 range will be hard enough to resist the wear while still maintaining some toughness to avoid brittleness. Good luck with the project - these "buttons" work very well.
Lars
Lars
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Safety Car
Joined: Jan 2009
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Likely the older then newer the better.
Want to see what changed between todays cam lobes/lifters and yesteryear's we had no trouble breaking in.
Have to buy a new cam set . Really don't want the expense of a roller,
may have no choice.
Don't know enough if they were rated on the rockwell scale.
Bet somebody knows.
Ain't it cool the forum has members with expertise available and never thought we'd need?.................
keep looking up and smiling.
Want to see what changed between todays cam lobes/lifters and yesteryear's we had no trouble breaking in.
Have to buy a new cam set . Really don't want the expense of a roller,
may have no choice.
Don't know enough if they were rated on the rockwell scale.
Bet somebody knows.
Ain't it cool the forum has members with expertise available and never thought we'd need?.................
keep looking up and smiling.
Melting Slicks
Joined: Nov 2006
Posts: 3,416
Likes: 1,824
From: Apple Valley, MN
This post has shifted completely from the topic of repairing axles to a discussion of cams. Please start a new post.
Highway Man
Joined: Apr 2019
Posts: 445
Likes: 188
From: Ca
I’ve got a set of stub axles that are just warn enough to make them useless the way they are. These would rejuvenate a good set.
Cheers,
Richard
Race Director
Joined: Apr 2011
Posts: 11,183
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From: North of Toronto - Ontario
M
Highway Man
Joined: Apr 2019
Posts: 445
Likes: 188
From: Ca
My thoughts are if @Jayson77 is going through the process of making these up, along with the trials and tribulations of the hardening and testing a few to get the perfect hardeness, I’d take a couple.
That would save me some time and effort.
Richard
Tech Contributor
Joined: Aug 1999
Posts: 15,176
Likes: 3,992
From: Connecticut, USA
I practically have given up on rebuilt or new axles
I have a bin of axles that I will machine tips for to get them ready to fit to tuned posi’s
The axle wear and final posi tune will determine the size of the tip what works best in one won’t fit another posi
I have a bin of axles that I will machine tips for to get them ready to fit to tuned posi’s
The axle wear and final posi tune will determine the size of the tip what works best in one won’t fit another posi
Thread Starter
Instructor
Joined: Nov 2006
Posts: 115
Likes: 6
From: Carlyle IL
For folks that are interested, my car is currently off to the paint shop and won't be back for a few months.
I plan on testing the differential pin for its hardness before selecting the material for the button. I'll post hardness as soon I get them.
I'll also do the cam and lifter hardness this week.
I plan on testing the differential pin for its hardness before selecting the material for the button. I'll post hardness as soon I get them.
I'll also do the cam and lifter hardness this week.
