could it be that the titanium shiftknobs are not real titanium?
Joined: Oct 2000
Posts: 14,269
Likes: 42
From: Redmond, WA
Originally posted by KenS2K
I have both the titanium and the stock aluminum shift knobs. My roommate is a senior quality control inspector for an areospace parts manufacturer. He confirmed that the titanium was in fact titanium.
I have both the titanium and the stock aluminum shift knobs. My roommate is a senior quality control inspector for an areospace parts manufacturer. He confirmed that the titanium was in fact titanium.
I weighed the Voodoo and displaced water with it to determine density, it is indeed Ti.
Also, Al density is approx 0.097 lbs/in^3 while Ti density is about .163 lbs/in^3 (knowing the alloys of each are different but close enough). This means the Ti is 68% denser than Al.
Now take Barry's weight of the Al at 150 gm and add 68% to it, you get 252 gm (Barry weighed Ti at 250 gm). That's about as close as close get!
Conclusions from the combination of Ken's roommates taste buds, my sinking of the VooDoo knob and Barry's triple beaming confirms both the Honda and VooDoo Ti knobs are made of Ti.
How do you like them apples, bitch?
Joined: Dec 2000
Posts: 4,307
Likes: 13
From: Ogden
Hey Richard....got mine from Dave (as you now). A wet chemical and spark gas analysis confirmed it was indeed Ti6AL4V. With proper chemical ranges for Titanium, Aluminum, and Vanadium. I think you are looking at the economics of scale. I'm sure Honda's supplier is buying a "mill run", or several hundred feet or more of bar. As for my Columbium knob.......that's a different story for a different day.
Joined: Dec 2000
Posts: 4,307
Likes: 13
From: Ogden
As for RT's displacement testing I'd go back to physics class. If the knob's are the same size they displace the same amount of water regardless of density of the displacing material.....assuming the materials under test both sink completely and therefore displace 100% of the volume. The result will be the same weight of displaced water. For materials that float the calculations are more cumbersome....which is why we have ship builders
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Joined: Oct 2000
Posts: 14,269
Likes: 42
From: Redmond, WA
Originally posted by Utah S2K
As for RT's displacement testing I'd go back to physics class. If the knob's are the same size they displace the same amount of water regardless of density of the displacing material.....assuming the materials under test both sink completely and therefore displace 100% of the volume. The result will be the same weight of displaced water. For materials that float the calculations are more cumbersome....which is why we have ship builders.
As for RT's displacement testing I'd go back to physics class. If the knob's are the same size they displace the same amount of water regardless of density of the displacing material.....assuming the materials under test both sink completely and therefore displace 100% of the volume. The result will be the same weight of displaced water. For materials that float the calculations are more cumbersome....which is why we have ship builders
.
You sink the knob to figure out its volume
. Then you weigh the knob. Then you take the weight and divide it by the volume (which is the units of density, learned in my refresher course of physics) and you get the density of the knob you've got. Now match that to the know densities of the materials you think it might be and you got a pretty good indicator of what it's made of.Sorry I didn't break down the step by step procedure for you "physically" challenged
Just because fancy tools exist for a complete and thorough analysis, doesn't mean the good common sense (quick) old fashion methods stop working. I remember some old fart I use to work with saying, "You young whipper snappers think you know it all don't you" never thought I'd be the one think that.
BTW, Utah, was that you drunk posting late night over the weekend? Every thread on the whole page 1 of Car Talk had you as the last poster, WTF?
Joined: Oct 2000
Posts: 14,269
Likes: 42
From: Redmond, WA
Originally posted by Utah S2K
..............If the knob's are the same size they displace the same amount of water regardless of density of the displacing material.............
..............If the knob's are the same size they displace the same amount of water regardless of density of the displacing material.............
J/K, not!