B.Rad, I first tried the cryo out on my chain saws to be pleasantly surprised they retrain their tension and their chip throwing edges for a full size oat tree 3+ tanks of gas for 6+ hp saw while prior they were just making dust by a single gas tank. I used to carry a few chains with me so could switch out on site instead of stopping to sharpen, not with a cryo'd chain one is enough to do me in on how much to load and haul by one chain holding up so long.
2 ft logger chipper chain run about $25 a pop and cost me $6 a chain to freeze + shipping to find its very cost effective both in labor to sharpen and the lasting teeth compared to un cryo'd chain. No one but no one has rev'd a Commando higher than Ms Peel and survived to ride couple 1000 mile further with crank that bent but didn't break and over time reduced its off centering on DS 1/16" to under 1/32" all by its cryo'd self healing. I am sold down the river on the benefits of nitrogen - 300'F processing and may do some of next Peels stuff at the even lower gas temps now available.
There are dyno tests that show more power i assume by less friction do to less thermal distortion and surface toughness and thermal conductivity. I send in bearings and bushs and even Al parts as the temps get so low its like internal shot peening compressing from surface to the core of Alloy stuff even though its no ferric content that is easy to understand the cold process helping.
BEWARE do not send anything that not completely disassemble to its raw single alloy state d/t the thermal contraction material differences at these low temps.
Peel's CHO Al head squeezed its valve seats completely out, which lead to a couple year long saga to get it back so in mean time put on standard small port head that woke up Peel power beyond belief of me and contesters. its all computer controlled so main thing is find shop near ya to save shipping. I wire small parts to a piece of wood and tiny mixed fasteners inside screen cage. Anything that can't take 350'F on the slow heating stress relief cycle will end up in a puddle. Paper is ok as combusts at 451'F but stuff wrapped in heavy paper are somewhat insulated from the temps changing, which must be 1'F per min or thermal shock can distort or fracture.
The Norton Commander crank was in crisis failure mode of fractured bearing and crank with the most advanced alloys available until they tried the cryo tempering that solved it and production began.
Some of the detail developments are interesting to recall. For example, it was found that the forged steel rotor shaft journal diameters, which are casehardened, grew in diameter during the first few hours of use due to the high temperatures developed in these early engines. It was only after a cryogenic treatment was introduced into the production process that this problem was overcome.
http://www.nortonownersclub.org/history/rotary
Realize I have to put up with a whole lot of flake from ignorant opinions even the current group that owns the Rotary when I brought cryo crank subject up to them they said they had one of the best laughs off a private inquiry ever. Wait till they make new cranks w/o the cryo so last laugh may be mine again. I didn't show them this history, so if ya ping them about hobot and cryo cranks enjoy their reaction then send them this as i didn't want to break their smug mood.
Remember it was NASA that put cryo temper on the map not hobot claims. Oh my just realized I need to send in plugs too and HT leads and tires and brake and clutch pads and chains and my target .22 barrel too and big fasteners, all the tranny stuff but its does absolutely nothing to the zinc based pot metal of Amals so don't waster money on them as I did to learn scope of application.
http://cryopro.com/engine/index.html
http://www.cdpautomachine.com/ecatalog/cryo.html
you will create more HP and torque (as measured on a DYNO) with a cryo-treated engine than the non-treated engine. (Typically up to 5% more).
http://www.recmotor.com/shop-services/c ... eating.php
Strengthening aluminium with cryogenics
Cryogenic tempering of aluminium and aluminium alloys will stress relieve your aluminium components and increase their load bearing capacity, making them stronger and last longer.
In addition to sporting equipment, aluminium engine components such as heads and blocks when treated cryogenically will exhibit lower warping and distortion and enhanced heat dissipation properties.
Aluminium that is to be machined will benefit from improved machineability and product finish.
http://www.cryogen.com.au/Aluminum_Tempering.htm
