I have less vibration if anything in my example anyways.
I did a bunch of research of both the steel and the aluminium shafts and of course there is a wide variety of opinions either way.
One thing that everyone seem to agree upon is that 80-90% of driveshaft failures *usually* occur on the big end of a run. Meaning at the end of the strip. I cannot comment or give opinion at all about road racing, rallying etc.
Alot of the domestic muscle car guys around here tell me the choose aluminium theselves for a few reasons. It tends to "give" a little more than a steel shaft which they believe leads to longer life and better overall for the driveline. They also would prefer to have a shaft made of aluminium if it is going to fail as less damage is done from an aluminium shaft than steel. (Although they prefer, if you can afford it, carbon over both, due to the fact it turns into cloth essentially if it fails). And finally this is drivetrain rotational weight we are talking about here, which is by far the best weight to lose.
But I also noticed reduced wheel hop after the upgrade, I spectualate this may be due to the lack of a center bearing mounted in rubber that I feel may tend to flex upwards or move under high torque situations.
Also in comparison to a stock two piece shaft the aluminium one is dramatically lighter. Either way I think the change to a onepiece regardless of steel or aluminium or carbon fiber for that matter is a win and win situation. Especially considering the shaft you have in you car now is likely 20 years old or very close to it. It should probably atleast be looked at just for your own piece of mind.
Bottom line here is listen to our driveline expert dude, he's really got the only opinion that really counts here and more than likely not going to lead you wrong. I would put the most weight on this because he is first hand telling us, and no hearsay or 2nd or 3rd person down the line info.
I did a bunch of research of both the steel and the aluminium shafts and of course there is a wide variety of opinions either way.
One thing that everyone seem to agree upon is that 80-90% of driveshaft failures *usually* occur on the big end of a run. Meaning at the end of the strip. I cannot comment or give opinion at all about road racing, rallying etc.
Alot of the domestic muscle car guys around here tell me the choose aluminium theselves for a few reasons. It tends to "give" a little more than a steel shaft which they believe leads to longer life and better overall for the driveline. They also would prefer to have a shaft made of aluminium if it is going to fail as less damage is done from an aluminium shaft than steel. (Although they prefer, if you can afford it, carbon over both, due to the fact it turns into cloth essentially if it fails). And finally this is drivetrain rotational weight we are talking about here, which is by far the best weight to lose.
But I also noticed reduced wheel hop after the upgrade, I spectualate this may be due to the lack of a center bearing mounted in rubber that I feel may tend to flex upwards or move under high torque situations.
Also in comparison to a stock two piece shaft the aluminium one is dramatically lighter. Either way I think the change to a onepiece regardless of steel or aluminium or carbon fiber for that matter is a win and win situation. Especially considering the shaft you have in you car now is likely 20 years old or very close to it. It should probably atleast be looked at just for your own piece of mind.
Bottom line here is listen to our driveline expert dude, he's really got the only opinion that really counts here and more than likely not going to lead you wrong. I would put the most weight on this because he is first hand telling us, and no hearsay or 2nd or 3rd person down the line info.
