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UGEIZUK
Dodge Dakota
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9/20/2005
12:37:15
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 Subject: RE: rearend gears and torque
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Message:
The rearend gearing is a RATIO, not a MULTIPLIER. If you have 3.55 gears, the ratio is 3.55 to 1. This means for every 3.55 rotations into the rearend, you get an output of 1 rotation. Going to a 4.10 means it takes more input rotations (from the driveshaft) to get one rotation out. This is a simple explanation that doesn't take the transmission into account, but it should help clear up confusion.
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Kowalski
GenIII
9/20/2005
16:08:05
|  RE: rearend gears and torque
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Message:
The confusion seems to be yours. The terms "ratio" and "multiplier" are not mutually exclusive in this use. In fact, your simple explanation shows exactly how the rear gear works as a torque multiplier...
Lead, follow, or get out of the way
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UGEIZUK
Dodge Dakota
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9/20/2005
18:03:04
| RE: rearend gears and torque
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Message:
Really? Then why is it that ratios are often written in the same format as a division problem? I see how you could argue that a ratio can be viewed as a multiplication problem in the same manner that dividing a number by 2 is the same as multiplying by 1/2.
The flaw in your argument is the accepted way of describing the gearing (the "convention") is as a ratio.
I suppose your going to flame me and make personal attacks, but go into a transmission shop and call it a "multiplier".
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Kowalski
GenIII
9/20/2005
18:18:44
| RE: rearend gears and torque
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Message:
Simply try to understand that the ratio 4.10 to 1 is multiplying 1 by 4.10 - the fact that there are alternative ways to multiply by dividing by an inverse # really is not important to understanding this. The torque amount of the engine, represented by the number one in this equation, has been multiplied 4.1 times; very simple.
Strange that you would suppose I would flame you when it seems by the name you chose (pronounced "you guys suck" ?) that you are the one interested in flaming. The flaw is not in my argument, its in your logic...
Easy to see why you're not using your usual screen name.
Lead, follow, or get out of the way
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GraphiteDak
GenIII
9/21/2005
00:11:38
| RE: rearend gears and torque
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Hey Kowalski, I just thought of nother way to explain the torque MULTIPLIER theory.
When using a PRY bar or similar across a fulcrum (I don't remember spelling) to LIFT something heavy you would be deviding the MOVEMENT compared to the initial work applied, but the work done would be multiplied.
So here you are moving the side of the pry bar 3.55 inches by hand, yet only lifting that 400 Lb load on the other end 1" Yet you are able to do that much work with maybe 115 Lbs effort. Just a quick guess in numbers, so don't hold me to the exact but you get the idea.
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jayb
Dodge Dakota
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9/21/2005
05:27:14
| RE: rearend gears and torque
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exactly. gear ratios are torque multipliers. they can be reducers too if you had say 0.65:1. which i belive is my overdrive ratio. anyhow i dont know what happens to horsepower, but i know you seriously multiply the amount of torque by the time it hits the ground.
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UGEIZUK
Dodge Dakota
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9/21/2005
09:05:20
| RE: rearend gears and torque
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Like I said, go into a shop and tell them you want to change your "gear multiplier".
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jayb
Dodge Dakota
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9/21/2005
09:20:10
| RE: rearend gears and torque
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Message:
he never said gear multiplier.
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