Cryo Treatment underway!
Turbo Mini Forums

so lads.

i have sent my gearbox parts away to be done.

it's not much to do & fingers crossed it works

will keep you updated!

anyone else done it to there mini yet?

I believe JohnK has done the block and box for his twin-k tubby.

If something is worth doing, it's worth doing half of.

What's the cost like over there?

We shouldve done a hardness test on them before you sent them Nick. See if it makes a quantifiable difference. Or does anyone else have data for it?

In boost we trust

ah good thinking joe! we so should have done that!!! to late now, it's in the hands of the post man. :)


maybe john has the Data??? john????

Edited by NickG on 17th Aug, 2010.

Bargain

If something is worth doing, it's worth doing half of.

i suppose the only way you'll know if they have been done is if they feel colder when they return.lol


carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

Or

A hardness test will tell you nothing.

Cyro is a not a hardening process.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I thought that at first but never said anything as Im not really clever enough to fully understand it and give such a reply

what is it liquid nitrogen?
if so we have cryo cabinets at work but i doubt its as simple as that.

I was under the impression (and I could be WAAAAYYY off the mark here).

That the treatment is in some ways similar to shot peening.

They cool the sample so rapidly the top layers of the material cool and contract at a greater speed than the core, leading to some sort of compressive forces on/near the surface that remains onces it is slowly brought back upto room temp.

its all to do with the crystaline structure of the metal.

i read alot of racer guys cry gen there gears then shot peen.

not sure about shot peening on mini gears though lol

would it not make it very brittle also?

EDit** had a chat to a guy local 80au about 40 pounds to do it.

no negative effects at all! im going to do it!

will report back.

Edited by NickG on 18th Aug, 2010.

I have very little knowlege on cryo treatments altho i`ve had it done to some cranks

but,,, with my V8 kombi gearbox (when it was continually breaking) i was told by Albins that the std issue VW gears are simply "Too-Hard" & so they`ve made me a gear kit (with better suited ratios) that are softer so they won`t be so brittle & just "Break"

apparently the Surface hardness is more for the "wear" factor but not so good for the "Snap-age" factor

i`m told that my kombi gears are now safe at up-to 500hp (turbo going onto it next year) ,,, but eventually (one day in the distant future) if they ever need looking at,,, that maybe the teeth will all be "laying-over" a tad

But hey,,, most minis don`t have over 200hp at the wheels like my kombi has,,, they also don`t normally weigh 1800kgs either

now i waits to see the end results of said gears

www.miniman.com.au

"""LazyGoodForNothingSmartArseKnowItAllBackYardMiniMechanic"""

Wikipedia pretty much says you heat treat them temper it all the way down -lots, as an extension to the process.

Can anyone clarify or add more? Ive only ever learnt about heat treating, nothing with cryo.

In boost we trust

http://www.195below.co.uk/Pages/Science.html

Geoff