Any luck with RGM?

Fast Eddie said:

he didn’t test these though, coz they weren’t available then …

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And just how did he test a nitrided layer I wonder. I have had nitrided cams sectioned, polished and checked under a microscope, the only thing that can be said is if the layer is present and the depth of layer.

Madnorton said:

And just how did he test a nitrided layer I wonder. I have had nitrided cams sectioned, polished and checked under a microscope, the only thing that can be said is if the layer is present and the depth of layer.

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Rockwell C hardness tester.

concours said:

Rockwell C hardness tester.

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Really - C hardness test for a nitride layer, if it was that simple then I would have done that. OK for a through hardened or case harden with a deep depth, but the trick is to measure the case hardness and not distort the reading if it breaks through the case to the underlying material. Nitriding case hardening and the case hardness it gives is well understood and the only real detail is case depth which can only be measured in section.

Madnorton said:

Really - C hardness test for a nitride layer, if it was that simple then I would have done that. OK for a through hardened or case harden with a deep depth, but the trick is to measure the case hardness and not distort the reading if it breaks through the case to the underlying material. Nitriding case hardening and the case hardness it gives is well understood and the only real detail is case depth which can only be measured in section.

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Simmer down.

I was simply answering what I witnessed dynodave doing. I will not debate validity of his test process.

My original comment was a poke in the ribs to Nigel's jewelry post. The aesthetic musing of a camshaft.
"The only problem with the AN cams is they’re so pretty it seems a shame to put in your engine !!"


I then responded and agreed with a thumbs up to Nigel's comment about having not tested the cam pictured.



I never heard back about the gear & mainshaft I handed you at the INOA NH Rally, any news?

Carry on, you're doing a great job.

concours said:

Simmer down.

I was simply answering what I witnessed dynodave doing. I will not debate validity of his test process.

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I was also wondering about that, I read your post as a reply to how to measure it.
Sometimes, clarity does suffer from brevity, although some people on this forum will _never_ have that problem

Speaking of clarity... How did this turn into a cam and metallurgy thread? Nevermind, I forgot where I was for a second.

Back on thread topic....I have reccieved two return emails from Junior since last Sarurday in an attemp to order a narrow ham can filter kit. I'm hoping a few more emails and another weeks time and I will maybe have one on order.