Hard Anodizing.
Hard Anodizing.
Any views or opinions expressed by me may in no way reflect those of Stewart-Haas Racing, Kettering University, or their employees, students, administrators or sponsors.
How does hard anodizing help in this situation? It is like a thin sheet of ice floating on water. The underlying material will yield and then the anodizing fails...Not to mention the fatigue life reduction from the anodizing.
Last edited by coleasterling; 02-16-2023 at 07:43 PM.
+1 for Fatigue Life reduction due to Anodizing.Originally posted by coleasterling:
How does hard anodizing help in this situation? It is like a thin sheet of ice floating on water. The underlying material will yield and then the anodizing fails...Not to mention the fatigue life reduction from the anodizing.
-Cole
Ben
Here is a good high school level explanation..
http://www.experimentalhelo.com/Anodizing&Fatigue.pdf
Ryan M.
Unfortunately I don't have any pictures of our non-hard anodized ones that we ran the prior year, but they were significantly more worn after the season was over than our hard anodized ones. It seemed to add life to the wear surfaces of the tripod bores.
Any views or opinions expressed by me may in no way reflect those of Stewart-Haas Racing, Kettering University, or their employees, students, administrators or sponsors.
In reference to the above,
What exactly is the point of hard anodizing then?
Everyone here does realize there are several different classes of anodizing and post anodizing treatments that all affect fatigue life, hardness, cosmetics, bond adhesion etc.
If anodizing was so bad for everything, it wouldn't exist. We better ways to make things pretty.
Now, lets get back on topic shall we? For the life of a typical formula car, well machined aluminum hubs would work fine. The thickness they have to be to meet the strength required probably doesn't warrant any weight savings, and the extra tight tolerances will be more difficult to machine but there is no reason at all they can't work. If we we discussing OEM cars and trucks that's another story.
Canuck,
Hard anodizing is great for protecting items from scratches and damage due to handling and assembly (and similar loads). It is not very helpful in contact stress situations where the peak shear stresses will occur below the anodized level.
Kev
That's what I was trying to point out. Everybody here is so opinionated and close minded that their way is the right way and only way they never stop to actually crunch numbers, gather data and think about how to solve the problem rather than how to defend their solution.You need to model your contact stresses and see how your material will yield with and without anodizing and better dang sure be designing with the fatigue life reduction in mind.
I mention the tolerances because if you have steel hubs and tripods that have a bit of play in them it's not the end of the world. But a tripod flopping around in aluminum is going to wear a lot faster than if it has a nice tight fit.
And I agree with you Kevin. However, what everyone has failed to consider is how much you are actually yielding and deforming the material compared to how much the axle plunge is rubbing the tulip across your tripod bore. Which do you think is going to cause more wear? And as I said above, how much yielding is really taking place? (That's all rhetorical by the way )
We used steel inserts with aluminum hubs for the first time this year. They were press fit, and it was a pain to machine them. They worked great though.
Hey guys, thanks for all the replies.
Here is a picture of the finished product.
We'll be testing them soon and race it at the silverstone race.