What takes more power to turn?
11-20-2005, 07:46 PM
#2
TECH Fanatic
Well, if it were actually a measurable difference that accounted for something.....
The 12 bolt has a larger ring gear diameter (and associated parts) which would increase the rotational inerita.
But, both the 10 and the 12 bolt are on the same pinion centerlines, so the difference would only be in the difference in rotational diameter and nothing is lost like it is with the 9" due to it being so much further off the ring gear centerline. That is where the power and inefficiency is the most apparent.
The 12 bolt has a larger ring gear diameter (and associated parts) which would increase the rotational inerita.
But, both the 10 and the 12 bolt are on the same pinion centerlines, so the difference would only be in the difference in rotational diameter and nothing is lost like it is with the 9" due to it being so much further off the ring gear centerline. That is where the power and inefficiency is the most apparent.
11-22-2005, 01:05 PM
#6
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They're talking pinion relative to ring gear, no diff
I've seen puts the pinion dead center so you have
helical gears that scrub a little as they turn, and
the more off-center, the more scrub. External pinion
angle doesn't affect this internal geometry.
I figure a big gear deeper in thick oil is going to apply
more fluid drag.
But the power lost in a busted mini-10-bolt can be
substantial
I've seen puts the pinion dead center so you have
helical gears that scrub a little as they turn, and
the more off-center, the more scrub. External pinion
angle doesn't affect this internal geometry.
I figure a big gear deeper in thick oil is going to apply
more fluid drag.
But the power lost in a busted mini-10-bolt can be
substantial
