I have a Experimental class 108-3 with a o-470-K wide rod crank where the previous owner had it ground down to the 0,01". Unfortunately they did not Nitride it afterwards as per the overhaul manual. I would like to Nitride it here in Sweden, but I would need to know the exact process to use. There are a couple of Nitriding processes, (Gas or ION etc) and I want to use the correct one. Does anyone have any insight in this?
Br/Henrik

I'd call Aircraft Specialties Services in Tulsa Oklahoma and see if they will tell you what they do.
918 836 6872

Also looked at an Airboat forum and "
Aircraft cranks are Nitrided which adds strength and hardness. This is a three step process; rough grind, nitride and finish grind. Ion-nitriding will work on airboat cranks it is cheaper and two step process. Grind and have Ion Nitrided."