Cryogenic strenghtening

mgbv8 · Post by **mgbv8** » Mon Apr 23, 2012 8:20 pm

I'm having some of Jays half shafts treated for a back to back test against the stock MGB shafts.

After a few good hard launches the MGB 1800 shafts are definatlety twisting.
So Andy at 195 below is going to treat a pair and I'll keep the other spare pair.

After the last outing we can see a noticeable 3mm twist in the splines. So the new set will go in for a days racing and if they dont break we will take them out and check for damage

Its £8.99 +vat per kg for the process. So the shafts will cost £72.00 + vat.
I'll collect them from Mansfield so I dont know postage costs. I'm taking them on Wed for the treatment on Friday which takes a few days I think.

Will be interesting to see how they perform eh?

Perry

ian.stewart · Post by **ian.stewart** » Mon Apr 23, 2012 10:26 pm

Cryogenics is meant to be good, with theadded advantage over heat treating of no noticable distortion

ChrisJC · Post by **ChrisJC** » Tue Apr 24, 2012 7:01 am

http://en.wikipedia.org/wiki/Cryogenic_hardening

Suggests that you will get a stronger shaft, but at the expense of toughness. I'm not sure if that's what you want.

But your experiment will find out for sure!

Chris.

kiwicar · Post by **kiwicar** » Tue Apr 24, 2012 9:14 am

Hi
You can get powerglide gear sets that have been treated like this before assembly, they do the whole thing, carrier, gears pins, and output shaft, the people using them claim they increase power capacity of the box from about 720 to 750 bhp standard to 900 to 920 after being treated. From the write up on wikipedia it sounds like it should work on both applications, but I would think it not so good for drive shafts on a rock crawler.
Best regards
Mike

topcatcustom · Post by **topcatcustom** » Mon Mar 10, 2014 4:40 pm

Perry did you find any improvement with the cryo treatment?! I've been thinking about this for years, and nearly at the point where I have to decide whether do get my crank done or not!

mgbv8 · Post by **mgbv8** » Mon Mar 10, 2014 9:05 pm

Hi Tom!!

The old MG shafts that I had treated lasted twice as long as non treated shafts on the drag strip. They are not dipped in nitrogen, they are cooled in an air chamber that is cooled with liquid nitrogen. So they sit in air at -195 for a long time. The process worked for me for what I needed at the time with the power I was putting out.

Pel

topcatcustom · Post by **topcatcustom** » Mon Mar 10, 2014 9:08 pm

Great thanks, time to get a price I guess!

mgbv8 · Post by **mgbv8** » Mon Mar 10, 2014 9:11 pm

Cool!!

No pun intended mate.

Give Andy a shout at 195 below.

http://www.195below.co.uk/