Cryogenic treating

[BIGWOODY]

Anyone know where to get a ring and pinion done? I tried Bobby longfield, but he's never there. My HP60 ring gear lost some teeth after a bit too much throttle.

[outlawzxj]

the boys at carolina rockshop used to I'm not sure if they still do. check them out.

[David Taylor]

Anyone know where to get a ring and pinion done? I tried Bobby longfield, but he's never there. My HP60 ring gear lost some teeth after a bit too much throttle.

I thought you went to Hi9's ?

[CRASH]

I thought you went to Hi9's ?


Dean, who goes by 66cjdean on POR, does it. I think his company is Performance Cryogenics, in Lincoln, CA.

[CRASH]

Out of curiosity, did the 60 ring gear show lots of wear at the top of the drive-side teeth due to deflection?

[BIGWOODY]

Out of curiosity, did the 60 ring gear show lots of wear at the top of the drive-side teeth due to deflection?
I just had a R&P shipped to Performance Cryogenics, the rest of the gear looked perfect, I've run it for two years. I'll snap a picture or two of it apart.

[BIGWOODY]

I thought you went to Hi9's ?
My front is a HP60

[Jes]

Dean, who goes by 66cjdean on POR, does it. I think his company is Performance Cryogenics, in Lincoln, CA.

Yep Performance Cryogenics, great customer service. 916-434-7245.
He did my Warn shafts.

[XJEEPER]

Prices for treating R/P and shafts?

[BIGWOODY]

D60 R&P was $45

[KIAKillerXJ]

thats not bad at all, I had always wondered how much a process like that went for

[XJEEPER]

yup, I'll pay it.

[Ghost]

My front is a HP60
Are you breaking shit again? Damn boy dont hold that skinny peddel so far down.

[sandmcrew2]

Does anyone else have any info on performance cryogenics in Lincoln, CA? I tried calling them by the number a few posts up and it was the wrong number. I cant seem to find their address either. Thanks
-Jerry

[Jes]

Try this number: 916-434-6978

[goodburbon]

I'm curious about the cryo process. I had my engineering materials class and we discussed the solidification process of the metal and how a finer grain structure is harder. But supercooling a metal after it is already solid? I know very cold metal becomes brittle, is the surface grain structure permanently modified without affecting the integrity of the internal structure?

[sandmcrew2]

Thanks, that last number was correct. Performance Cryognics, Lincoln, CA 916-434-6978.
-Jerry

[Weasel]

I'm curious about the cryo process. I had my engineering materials class and we discussed the solidification process of the metal and how a finer grain structure is harder. But supercooling a metal after it is already solid? I know very cold metal becomes brittle, is the surface grain structure permanently modified without affecting the integrity of the internal structure?

I'm sure someone will correct me if I'm wrong but cyro happens on the molecular level, it slow and compacts the atoms closer together, resulting in a finer grain structure. I don't belive it makes the part brittle as it does not change the phases present just refines them.

[goodburbon]

I'm sure someone will correct me if I'm wrong but cyro happens on the molecular level, it slow and compacts the atoms closer together, resulting in a finer grain structure. I don't belive it makes the part brittle as it does not change the phases present just refines them.

I am not an engineer yet but I do work in the industry. We had to analyze the material used for our pipe racks because of concerns that low temps combined with inherant system vibrations could cause material failure.

I learned a lot about metal properties in my materials class but I want to know about the specific effects of supercooling a material that has already solidified and formed a crystal structure.

If this post makes no sense forgive me for drunk posting again :dunce: .

[Weasel]

well if used at low temps then the metal could be come brittle, but remember cyro parts are only kept at a certain temp for a period of time then brought back to room or operating temp.

[Weasel]

here's a good link. Pay attention to Ed Stevens and the other guy, lots of good info in there.

http://www.pirate4x4.com/forum/showthread.php?t=176697&highlight=Cyro

[SeanP]

should have chimed in here earlier. I have known/wheeled with dean for about 10 years. Great people. Nice set up with big tanks of Liquid Nitrogen and then ovens to cold/hot temper the steel/alloy. He's done a few parts for me.


Dean also makes a bunch of things, air bumps, recentered hummer beadlocks (i own some) and has a full machine shop. Need a narrowed 60 or 44 housing? he's your man.

SeanP