Yukon 4340 drops available for testing...

[shelljeep]

This has been a while ago, but in this post alot of people expressed an interest in seeing some independant test results on the Yukon 4340 stuff. I don't have drops from a 60 shaft, these are from some D44 blanks a friend of mine cut and resplined for me. I am willing to ship these to a vendor who would like to test the hardness, or composition if they can/want. I know the composition would be expensive to analyze. Sorry, but I can only offer up the drops, in order to help satisfy some curiosities. I searched to see if anyone had followed this up yet, but noone has, at least not publicly.
Here is a pic of the drops:
Here's a few pix of the splines, JD does great work every time!


I gotta say that Ted from Peake Empire has EXCELLENT customer service and gave me damn good hook up by being able to get these blanks.
Lemme know if anyone wants a drop.

[shelljeep]

No takers

[P&T Jeeps]

I've got an idea... you keep the drops and give me the shafts. I'll test 'em for ya!

[shelljeep]

Lemme see....
Let's go test your new tubework instead.

[P&T Jeeps]

I've got the 14th of March marked on the calander, likely Hot Springs or Gilmer...

how was the trip last weekend to KAT, worth going back?

[Weasel]

I can check with one of my met buddies at school and see if he would be interested in doing this for ya.

On second thought what do you want to test? The composition should be 4340, Carbon - 0.43, Manganese - 0.74, Phosphorus - 0.006, Sulfur - 0.002, Chromium - 0.77, Nickel - 1.81, Molydenium - 0.24 and Copper - 0.19.

That hardness should be fairly easy to test for as alot of machine shops will have a RC tester. What else did you want? Probably cheaper to have it done localy then ship it out.

[shelljeep]

I went to Clayton since noone from here could go to Katemcy, met up w/some of the Black Sheep. They were building, running some trails on the new place that became available up there. It was badass. Friday, finished building a 5 trail. Hard work getting the group out by 9PM that night. Mike Green knows how to cut trails Saturday, I spent about 6 hours in a flooded creek crawling serious rocks behind 4 rigs with 44's. Finished the rest of the day on some rocky uphill washes strung together. Sunday, blew the end cap partially off my saginaw box on a trail they call 8point due to the turns involved. What a BITCH. Had to do front digs basically all the way out in order to be able to steer at all.
Great trip. Broken: My Ramsey 9500, Saginaw box, Dash , turn signal , and my tub is dented so bad I can't install my windshield. I wanna go back in May. I am gonna be a daddy around March 6th, so I will have to miss that trip with you .
Weasel, I was kinda looking to see if one of the more capable shops that float around on PBB wanted to verify composition/hardness on their own. I understand that is what 4340 is"supposed to be", but there were some doubters on here who sounded like they didn't trust the original source. I personally DGAF. I just thought I would be nice and offer the drops up. My personal testing will be more along the lines of what P&T is talking about . As in when/if/how they break. If your friend wants to check the composition for something school related, that is cool, I'll send it his way. It will benefit all of us here as well maybe.
Here is a pic of the Saginaw break. The plate to the right is what I used to move it ahead 4.25". I turned up the pressure in the pump about a year ago. I used to have 2 finger turning . Soon I will have full hydro .

[P&T Jeeps]

I'm hoping someone takes them, as when I build my D60 front I'm considering on going Yukon rather than Superior to save some $$ but not until there is more consistancy in what Yukon is producing. If they're just heat treated junk I'll pay up for the good stuff....

[GOAT1]

I can do a hardness test on them, but a chemical composition test will cost some money, I'll look into what that would cost. Unfortunately, that is the only way to find out what alloy they are.

[shelljeep]

Mebbe we can all pitch in? (sounds hard to organize, but I ain't gonna foot the entire bill on something I am only marginally interested in...)
P&T, JD said he could verify the hardness. I could drop it off to him if y'all want. But the hardness test seems like it's less useful than the composition. Hardness could vary from piece to piece, seems more subject to QC than composition. JMO.
Goat1, looking forward to what you find out on the comp. analysis costs, thanks!

[GOAT1]

The chemical composition test is not as expensive as I thought, it is only $30-$40. I can send that out and have it done. I can also acid etch the end to see the case depth and do a hardness test to see the hardness at different depths. PM me and I will give you my address and info. I'll pitch in $10 to have it done, who else is in?

[The Mac]

The post you are speeking of was about D60 shafts not D44s, so if you are going to do a test you should do a 60 shaft as well. Let me know who is testing them and I will send them ONE 60 shaft to test.

[shelljeep]

to both of you. This is pretty cool. I will pay the shipping, do you need both drops or just one, Goat1? Who else is in?

[Hypoid Drive]

Im in for $20.00 on the composition testing where do I need to send it GOAT?

[shelljeep]

's to ya, Hypoid. Goat1, PM'd you.

[Keith]

Originally posted by P&T Jeeps
I'm hoping someone takes them, as when I build my D60 front I'm considering on going Yukon rather than Superior to save some $$ but not until there is more consistancy in what Yukon is producing. If they're just heat treated junk I'll pay up for the good stuff....

tisk, tisk, tisk! What are you thinking?

[P&T Jeeps]

Originally posted by Keith
tisk, tisk, tisk! What are you thinking?

exactly what I said, if I can save some $$ I'd like to, if it's junk I'll pay up. I don't understand?

[Weasel]

Originally posted by The Mac
The post you are speeking of was about D60 shafts not D44s, so if you are going to do a test you should do a 60 shaft as well. Let me know who is testing them and I will send them ONE 60 shaft to test.

They are testing blanks so there should be no difference between the material for a 44 vs. a 60.

[Erik D_lux]

Originally posted by Keith
tisk, tisk, tisk! What are you thinking?

Seen a yukon shaft break? Heard of one breaking? What makes you feel that they are such crappy axles other then what we already know (inconsistancies blah blah)? Are they not holding up? I would like to hear why you know they are a crappy axle.


Or are you just talking shit?

[Erik D_lux]

You can put that info right here


http://www.pirate4x4.com/forum/showt...hreadid=222204

[MAD MAC]

send me a drop i can have the met. lab check them out at work.

[MAD MAC]

I just had them test a spider from a 14 bolt for my 14 bolt mini spool material and hardness. And its FREE

[GOAT1]

Originally posted by The Mac
The post you are speeking of was about D60 shafts not D44s, so if you are going to do a test you should do a 60 shaft as well. Let me know who is testing them and I will send them ONE 60 shaft to test.

Shelljeep is sending me his drops for testing, so if you want to send anything PM me for my address.

[P&T Jeeps]

Originally posted by Erik D_lux


Seen a yukon shaft break? Heard of one breaking? What makes you feel that they are such crappy axles other then what we already know (inconsistancies blah blah)? Are they not holding up? I would like to hear why you know they are a crappy axle.


Or are you just talking shit?

I never remember saying they are crappy axles. I said "if" b/c the jury is still out on them IMO. What I'm saying in this thread is no different than what your asking in the one you started. I'm not breaking right now & I like it. I'll be stepping up to bigger meats in the next few months, as I'm building F&R D60's now. I have not heard of the Yukon's breaking first hand but have seen the same inconsistencies in production as you. Which apparent has concerned us both.

I'm interested in the tests of the materials & real world tests PBB members put them through that's all. I've got no desire to spend less $$ twice; I'd rather spend more once, ONLY if it is necessary...

[shelljeep]

Right on Mad Mac!! You will get the other drop, then. You aren't affiliated with The Mac, are you? I'm guessing we would rather have 2 INDEPENDENT labs carry out the tests, am I right, fellas? B/T/W-No offense to The Mac, this may be a way to verify his company's alledgedly questionable QC on these items.

Pssst : P&T, I think Eric D was jumping on the strongman that time, not on you...