Thread: The Roofus Special

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Not sure you'd want cryogenic hardening on front end components, Ryan. It indeed hardens and strengthens certain materials, but it also reduces material "toughness". Cryogenic hardening increases the brittleness of the metal, and I'd be concerned with that quality on suspension components. Your input shafts are a different deal than A-arms, IMO.

Originally Posted by rspears

Not sure you'd want cryogenic hardening on front end components, Ryan. It indeed hardens and strengthens certain materials, but it also reduces material "toughness". Cryogenic hardening increases the brittleness of the metal, and I'd be concerned with that quality on suspension components. Your input shafts are a different deal than A-arms, IMO.

I'd think the input shafts would see more fatigue than this control arm. The input shaft is transfering all the power and torque from the engine to the transmission. If they were brittle, they wouldn't take 3rd gear boosted launches, leaving the line at 4000+rpms on a sled puller, and all that twisting shock load. I've only heard of one breaking through my supplier. He's sold thousands of them.

But, I agree with you. Those cast parts may not like being treated with this method. I know guys cyro'ing cast trans cases, but I haven't heard any real world results yet.