Quote:
Originally Posted by bumpstart
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with out giving away the trade secrets
is the chroming treatment staged in steps with varying chrome compositions
to put softer but corrosion resistant layers on the liner
and progressively harder chromes on the surface treatments
( as i believe mazda evolved after noting chrome to liner separations )
i guess what i am asking is ,, does this new process have specialized layer compositions to
1: bond favourably to the liner
2: another that is impervious to mixture and moisture from attacking the inner and causing separation
3: hard faced on the top to limit galling and friction
also,, any plans to try a final nikaseal facing?
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Hi and thanks for your questions.
At this point no there is no progressive application of the chrome, we were just happy to get the result we did after so many others have tried with mixed results. My guy tells me that the chrome flaking is due to the prep of the liner and feels we wont have this issue. We use the best quality hard chrome available and I guess the real tell will be when the engine Pineapple Racing built comes apart and we can see the internals. It's been a few years so its just about time to get at that.
No real plans for Nikasil at this point although we do have access to it and I already have a client who uses Nikasil on the housings for their 35cc UAV engines. In fact they ran the special custom ceramic apex seals we made directly on the steel housings with no heat treating or hardening of any kind. Cubewano reported the steel polished like a mirror with no advetrse wear patterns.
On the Nikasil housings they have run the engine with ceramic seals for 250 hrs with no measurable wear to seals and housings alike. Measurements were taken with a digital Mic in a temperature controlled environment.
I'll definitly be talking to my guy about your points though
