Quote:
Originally Posted by chazmuska
Are you kidding me, that was probably one of the best mods I've done! I went with the Versus carbon fiber driveshaft and my speed picked up tremendously...the whole car just felt snappier too by getting rid of that 2 piece design, better throttle response. Compared to the old OEM driveshaft, that thing was a Heavy SLUG! If that was the only thing you changed, you probably wouldn't notice much. But once you get lighter rims, driveshaft, drop some weight, things start to add up fast! I would NEVER go back! As far as sound, I hardly notice anything except for maybe a slight, hum at low speed. The aluminum one is definitely louder.
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Butt dyno is very misleading and typically in correlation to money spent.
This has been discussed in nauseam. The actual science and physics can and has been calculated. As well as actual real world testing beyond the butt dyno.
The driveshaft is such a small portion of the drivetrain losses, and such a small diameter. Losing 10lbs on it (assuming diameter didn’t increase) is equivalent of losing 1lb in a 1000lbs stone. The difference is so small. And if you get an aluminum shaft the diameter increases and now the weight has been moved further outside and it actually requires more force to rotate.
The 3 benefits are static weight loss
Swapping from 2 piece to 1 piece, which has a similar effect to adding stiffer trans mounts.
And holding more power, which I haven’t really heard anyone snapping a driveshaft yet.
The “rotational” weight loss benefit is so small it’s almost non existent. Its the equally to 1hp in 1st, 1/2hp in 2nd, 1/4hp in 3rd and beyond that it’s basically doing nothing. And for aluminum shaft it actually requires more force then oem to rotate because of the larger diameter albeit only like a 1/4hp more to
rotate in 1st and negligible beyond that.