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Old 08-30-2009, 02:08 PM   #1
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Default Titanium vs. Steel and Aluminum

I was looking at Titanium Racing for T2'009 parts. Would it be a good idea to go with the titanium instead of the steel and aluminum for CVD's, Screw Kit, Spool Cups, and Pivot Balls?

I know the Titanium is a lot stronger, but it is going to make it heavier or lighter?

Thanks in advance.
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Old 08-30-2009, 03:15 PM   #2
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Steel is strongest and heaviest.

Titanium is lighter than steel but not as strong.

Aluminum is even lighter but also even weaker.
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Old 08-30-2009, 03:37 PM   #3
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Change screws if you need to reduce weight, otherwise it's not that big a deal.

The priority is rotating weight. Anything that can be done to reduce the weight of the drivetrain translates to better responsiveness to the throttle. However, making it weaker is not a good idea!

Before anything is changed, assess its loads. Where there are shear loads (eg stand offs) then steel is your best option. Also, where you need high loads (eg grubscrews on shafts) steel is also the material of choice.

Compressive/tensile loads (eg shock towers or chassis decks) can probably take an aluminium screw, but there is also the possibility of a shear load in an accident. If it's a screw holding a servo to a post, aluminium will probably do it. A steering rod is great for titanium. However, a shock mount bolt takes shear and tensile loads, so steel is probably best.

Think application first, then think weight. Considering both, then choose the right material for the job. There is no simple answer, just a good engineering solution. HTH
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Old 08-30-2009, 03:39 PM   #4
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Oh, and one other thing. When choosing parts, there is one adage that cannot be avoided...

Strong, light, cheap - pick two!
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Old 08-30-2009, 10:33 PM   #5
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Quote:
Originally Posted by RFALLON View Post
I was looking at Titanium Racing for T2'009 parts. Would it be a good idea to go with the titanium instead of the steel and aluminum for CVD's, Screw Kit, Spool Cups, and Pivot Balls?

I know the Titanium is a lot stronger, but it is going to make it heavier or lighter?

Thanks in advance.
There will be no disadvantage using their screws apart from cost. The titanium screws will be stronger than the aluminium and plastic they will be screwing into and will be a bit lighter.

The titanium pivot balls may or may not be a better fit into the ball cups. If they reduce slop without binding, they are better. They will be lighter too but fit is most important.

The drive shafts are a harder to coment on. The torsional flex in a drive shaft has an influence on power delivery (more flex is more forgiving). Depending on whether you race on high or low trction, rubber or foam they may or may not be better.

The spool cups or of course not titanium but machined out of delrin. The dlerin would have slightly lower friction against the drive shaft pins and possible allow your suspension to work better. This whould be very marginal. The rplacement cost of the drive cups is more important. Go with the option that will save you money in the long run.

Don't just assume that because they are "optional parts" they are better than standard. You should be sure of there benifits before spending your hard earned cash.
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Old 08-31-2009, 05:54 AM   #6
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Quote:
Originally Posted by Pablo Diablo View Post
The drive shafts are a harder to coment on. The torsional flex in a drive shaft has an influence on power delivery (more flex is more forgiving). Depending on whether you race on high or low trction, rubber or foam they may or may not be better.
Im racing on a high traction, tight track with rubber tires
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