Physics of Racing Torque Converters

ss3011 · 08-07-2020, 11:21 AM

That is the whole point of that formula . You have to develop a K factor that gives you the rpm you want with the torque you have at that rpm . In general you have different stators and different pumps that will give you a combo that matches the K factor desired . units are in rpm and ft.lbs.

jmantle · 08-07-2020, 01:01 PM

If you can find a copy, "design of single stage, three element torque converters" by V. J. Jandasek explains torque converter function very well, including K factor. You might be able to get a copy from the SAE or it is in the third edition of "design practices, passenger car automatic transmissions", published by the SAE.

Jim Mantle V/SA 6632

Dissident · 08-08-2020, 12:28 AM

It might seem insignificant to most, but when you try to do math without using the correct units one will get incorrect answers.Torque is a twisting force and is typically expressed in lbs-ft while work is typically expressed in ft-lbs (energy). Yeah I know that seems to be nit picky but it makes a difference when you practice unit cancellation in the mathematics on the subject material.

Regards,
HB2

Dissident

08-07-2020, 11:21 AM	#1
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 909 Likes: 70 Liked 239 Times in 114 Posts	Re: Physics of Racing Torque Converters That is the whole point of that formula . You have to develop a K factor that gives you the rpm you want with the torque you have at that rpm . In general you have different stators and different pumps that will give you a combo that matches the K factor desired . units are in rpm and ft.lbs. Last edited by ss3011; 08-07-2020 at 11:23 AM. Reason: added info

08-07-2020, 01:01 PM	#2
jmantle Member Join Date: Feb 2008 Location: Black Creek, BC Canada Posts: 331 Likes: 79 Liked 172 Times in 81 Posts	Re: Physics of Racing Torque Converters If you can find a copy, "design of single stage, three element torque converters" by V. J. Jandasek explains torque converter function very well, including K factor. You might be able to get a copy from the SAE or it is in the third edition of "design practices, passenger car automatic transmissions", published by the SAE. Jim Mantle V/SA 6632

08-08-2020, 12:28 AM	#3
Dissident Member Join Date: Jan 2016 Location: Colorado hills Posts: 123 Likes: 11 Liked 73 Times in 36 Posts	Re: Physics of Racing Torque Converters It might seem insignificant to most, but when you try to do math without using the correct units one will get incorrect answers.Torque is a twisting force and is typically expressed in lbs-ft while work is typically expressed in ft-lbs (energy). Yeah I know that seems to be nit picky but it makes a difference when you practice unit cancellation in the mathematics on the subject material. Regards, HB2 Dissident