04-24-2023, 04:02 PM | #21 |
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Re: Broke an axle
Was the crack out in the taper section? You should post a pic or two.
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04-24-2023, 05:59 PM | #22 | |
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Re: Broke an axle
Quote:
Dale ..... I think you have a good, well-thought-out and reasonable process going there. I like sneaking-up on settings and adjustments. I understand the "just one more time ... please" philosophy. Still, every time one of our members talks about "HOW EASY" his hubs came off, I shudder to think about the condition of his axles. EVERYONE needs to take a few moments to try to understand the physics of how a 'tapered-fit' actually works. That tapered fit is what is meant to drive your Ford down the road. It surely ain't that key and keyway. Coop . |
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04-24-2023, 07:28 PM | #23 |
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Re: Broke an axle
I used to have ANY used axle mag tested. The spares I have now are NOS.
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04-24-2023, 08:24 PM | #24 |
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Re: Broke an axle
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04-25-2023, 06:42 AM | #25 |
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Re: Broke an axle
how come early plymouth dodge axle don,t brake . there tapered. but the bearing is mounted on the axle before the taper the axle runs true. i don,t care if you have king knog tighen the nut if the housing is worn it will brake again
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04-25-2023, 07:39 AM | #26 | |
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Re: Broke an axle
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Quote:
I'd never thought about that - key point! |
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04-25-2023, 02:19 PM | #27 |
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Re: Broke an axle
do you think ford would have spent the cost to have key ways cut in over 40.000.000 axles & drums. if they were not needed. model t to 1948. if ford could save a dime he would do it. plus the price of the key thats four fey ways & two keys for every car he made. proubly over 40.000.000
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04-25-2023, 04:15 PM | #28 |
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Re: Broke an axle
Finished, oiled up, ran, set went back and put another couple of pumps in. Will try to post the broke axle ends tomorrow after I clean the mess up and sort tools.
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04-26-2023, 03:26 PM | #29 |
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Re: Broke an axle
Here is the axle
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04-26-2023, 09:23 PM | #30 |
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Re: Broke an axle
A keyway break, the most common by far.
Jim, please show us the taper.
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04-26-2023, 10:07 PM | #31 | |
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Re: Broke an axle
Quote:
Coop |
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04-26-2023, 10:42 PM | #32 |
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Re: Broke an axle
Coop, I see the keyway. I asked to see the taper. Can you see the taper? I think not.
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04-26-2023, 11:57 PM | #33 |
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Re: Broke an axle
The keyway looks pretty well wallowed out, evidence that the hub, due to insufficient torque, has been getting driven via the key, with subsequent wear to both key and keyways.
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04-27-2023, 10:59 AM | #34 |
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Re: Broke an axle
Yeah, I would suspect that the hub was nowhere near tight enough on the taper and/or it had poor fitment on the tapered surfaces.
As Brian noted, this causes the key to drive the hub and not the taper surface - which can cause a break just like this. Also, looks like it was cracked for a while before it finally snapped. Torque those hubs boys - to 205 lbs . . . and if you need a bigger Torque wrench, go buy one! (that cheap bend-beam bar torque wrench that most of us "grew up with" won't cut it!) |
04-27-2023, 02:27 PM | #35 | |
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Re: Broke an axle
Quote:
Coop . |
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04-27-2023, 03:46 PM | #36 |
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Re: Broke an axle
Axle was tight in the hub when I pulled the wheel and hub off the rear end. Keyway may have been worn but I had to drive the stub out with a knocker nut and 8 lb sledge hammer. Here are the pics.
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04-27-2023, 04:13 PM | #37 |
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Re: Broke an axle
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04-27-2023, 06:16 PM | #38 |
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Re: Broke an axle
The discoloration (rusty looking) at break looks like a flaw.
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04-27-2023, 06:59 PM | #39 |
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Re: Broke an axle
@Tony, NY
The discoloration is typical of an old crack, just now giving way with the fresh area cracking all the way. As pointed out previously, the keyway being mangled is evidence that the key itself was the driving force, exerting tremendous stress at the inner end of the keyway. The very rough condition of the taper further confirms the cause of failure.
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04-28-2023, 11:05 PM | #40 |
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Re: Broke an axle
This is the typical breaking point on most every early Ford axle that I've seen broken in the years I've been playing with these old Fords. I also have some axles that I removed from rears I bought to salvage parts from that have visible cracks just starting at that same point of failure. I have to agree with the folks here who are saying most of these axle failures are a direct result of not having the axle nut torqued to the correct specification.
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