Quote:
Originally Posted by Jeff Higgins
Just a matter of the stepover vs. diameter of the ball end mill being used for machining. Cutting down the stepover would smooth it out considerably, albeit at the cost of increased machine time. In the areas left kind of "rough" that I'm seeing, it really doesn't matter anyway. Finish the mating surfaces and bearing cradles, and it's all good.
Tommy Olsen of ITG Racing has been mesmerizing us over on the S Registry with his machined from billet 2.0 liter cases for historic racing. Here is an example of the same cases, essentially, with much closer stepover:
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Jeff is correct and nothing functionally wrong with it,
I'm just used to seeing a much finer stepover or no visible step over between cutting paths
F1 machined parts are designed to the lowest possible safety factor so every detail is critical
Final machined quality of the below parts is what I'm used and expect so that picture hurt my eyes
Hydraulic steering rack
Gearbox casing cover plate, probably not top team F1 or even F1 as it's just not got the right attention to detail level, at a guess if could be a Formula E part
Used this company, some pictures of their machining quality
Sectors - Blackmore Precision Engineering
Pushed the design so far on wall thicknesses that the internal surfaces required supporting when the outer surfaces were final machined to stop the part deflecting away from the cutter