Im considering an aluminum performance shaft since my slip yoke is no good.

Thanks!

Holy Cow!__Didn't think a little statement like "rotational inertia" could have generated so much discussion

Oh, you'd be surprised, Julio! Don't get me started, just hope no one mutters, "backpressure"...

For those who don't care to understand the math and the physics, the amusing thing is these two actually pretty much completely agree with each other. 8)

A prime example of Engineering Masturbation. :-)

Finally a decent explanation of what you're saying with the math behind it (besides just yelling F=MA, F=MA!). I think this discussion is very good and beneficial, as it encompasses quite a few things. No need to hurtle insults, I grasp math and physics just fine.

My last post was insulting and I apologize for that.

I was getting very frustrated since I do believe you have the knowledge to understand what I was trying to say yet seemingly did not. I have always found your posts to backed by a good understanding of basic principles. I thought this would be a short discussion.

I like using work/energy to look at a lot of different problems and sometimes people don't readily see the method in my madness.

Best Regards,

Steve

A prime example of Engineering Masturbation. :-)

It helps to relieve the mind...

My last post was insulting and I apologize for that.

I was getting very frustrated since I do believe you have the knowledge to understand what I was trying to say yet seemingly did not. I have always found your posts to backed by a good understanding of basic principles. I thought this would be a short discussion.

I like using work/energy to look at a lot of different problems and sometimes people don't readily see the method in my madness.

Best Regards,

Steve

I really miss working on problems involving topics like the flow of energy. I'm currently in injection molding, and while satisfying at times, it's not what I want to do (but who the hell am I to complain, especially at this point in time!). This was a fun distraction.

Stanley:

Without a dyno you're fighting an uphill battle. Maybe someone here can help.

Steve:

I still concur. What type of engineer are you? ME? I'm an AE.

ME. There seems to be a lot of engineers on this board.

Steve

I really miss working on problems involving topics like the flow of energy. I'm currently in injection molding, and while satisfying at times, it's not what I want to do (but who the hell am I to complain, especially at this point in time!). This was a fun distraction.

It was kind of fun. Right now I am crash testing some work I've done on a vehicle occupant safety system redesign.

Steve

There are a number of engineers on the board. Goes well with owning a 40 year old car running. One of us even works for NASA! (not me).

In my new job I'm developing & improving mfg processes/mfg automation in the medical device/pharma industry.

It's a nice change, but similar to Leon's comment, I kinda miss doing instrument design work. It involved not just mechanical design, but also applied physics. At least I still get to do some micro-fluidics...

To return to the original question, has anyone tried the MSA aluminum driveshaft? The only reason that I'm even considering this is because of cost, not performance.

I've been trying to track down some drive train vibration for some time, and when my new Michelin tires were being installed I asked the shop to inspect the entire drive train (again). They say that I need new driveshaft u-joints, which are $35 each from MSA for the heavy duty (assume Spicer) model, plus labor to install them (unknown tonight), plus balancing the assembly (also unknown at this point).

Given shop prices in Northern VA, there might not be a huge gap.

Bearings, bushings and all suspension components have been replaced, as I mentioned in other posts.

Thoughts?

Peter

RockAuto has Moog u joints for 11.78 each for the '73. Good place to get parts as long as you know exactly what you're looking for.

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