auto stall explination
Thread Starter
Drifting
Joined: Aug 2009
Posts: 1,615
Likes: 3
From: Tampa Fl
auto stall explination
can someone tell me how the different rpm stall works.
Is it different than the tourque converter lockup???
I see most people go with a higher rpm stall why??
I have no idea what advantage or disadvantage this gives
please explain how all this works.
thanks
Is it different than the tourque converter lockup???
I see most people go with a higher rpm stall why??
I have no idea what advantage or disadvantage this gives
please explain how all this works.
thanks
Le Mans Master
Joined: May 1999
Posts: 6,520
Likes: 1,306
From: Windermere FL
Copied from another site, but a decent explanation I think...
So the advantage for a tweaked engine of a higher stall speed converter is that it will permit the engine to rev up into an RPM range (power band) where the engine is delivering better torque.
Stall Speed:
Think of the propeller of a single engine plane that is idling at the end of a runway. There is very little thrust created by the propeller due to the low speed at idle. Increase the engie speed (and the propeller speed) and it really pulls the plane forward because the prop really bites into the air. The vanes inside a torque converter do the same thing in the transmission fluid inside the converter. Change the angle or pitch of the vanes during manufacturing and you change the speed at which they "really bite" into the fluid and transfer that spin (and torque or force) to the other half of the converter which is connected to the drive train. Below that speed, just like the idling plane propeller, there is still bite, but not as much. That's the speed at which the converter "stalls" so to speak, or doesn't really transfer much power.
I belive the advantage of this is to allow the engine to rev up into the area of the power band in which it is developing torque, before the coverter begins to load it down by transfering that torque to the drive train.
Think of the propeller of a single engine plane that is idling at the end of a runway. There is very little thrust created by the propeller due to the low speed at idle. Increase the engie speed (and the propeller speed) and it really pulls the plane forward because the prop really bites into the air. The vanes inside a torque converter do the same thing in the transmission fluid inside the converter. Change the angle or pitch of the vanes during manufacturing and you change the speed at which they "really bite" into the fluid and transfer that spin (and torque or force) to the other half of the converter which is connected to the drive train. Below that speed, just like the idling plane propeller, there is still bite, but not as much. That's the speed at which the converter "stalls" so to speak, or doesn't really transfer much power.
I belive the advantage of this is to allow the engine to rev up into the area of the power band in which it is developing torque, before the coverter begins to load it down by transfering that torque to the drive train.
Drifting
Joined: Dec 2009
Posts: 1,854
Likes: 3
From: Boise Idaho
