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Old 08-06-2019, 06:32 PM   #13 (permalink)
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Originally Posted by Hersbird View Post
I think it stays unlocked not to prevent failure but because it adds torque multiplication. Adding torque like a reduction gear at the expense of efficiency.
Correct me if I am wrong, but my understanding is that the torque converter basically only multiplies torque from a stop or when trying to accelerate hard in a high gear.

I remember reading somewhere that a torque converter needs at least a 500 RPM difference between input and output speed (slip) to multiply torque, so any less than that just wastes energy from my understanding.
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