Quote:
Originally Posted by steve05ram360
22.7/21.8 = 1.0412... not sure where the 7% number came from ...
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Yeah, I don't know how I got that either. Maybe I was tired. Still, 4% doesn't sound reasonable. A lighter drive shaft improves efficiency almost exclusively due to speed changes. Steady state cruising should show no measurable improvement in fuel efficiency (conservation of momentum). Maybe there were bearings that were replaced along with it, or perhaps the heavy one was unbalanced?
I dunno, I'm just saying weight is difficult to see an improvement in MPG no matter where it is removed. If people are seeing big improvements from weight reduction, they are probably using their brakes too much.
Everyone has their limit for debate, discussion, and argument. My point is that I'd rather have you share your data and not reply to our doubting comments than to give up entirely.