stall speed
07-20-2005, 03:35 AM
#2
6th Gear Member
Join Date: Nov 2003
Location: Pittsburgh, PA
Posts: 5,182
RE: stall speed
stall speed is the amount of RPM that it takes before the converter fully engages without any slippage.
for ex. a 5 speed should start to move around 800 rpms to get it to start moving. now auto is the same way but it actually has some slippage to that amount of rpms where as a clutch is either on or off unless the driver is purposly slipping the clutch.
now say if you had a 3k stall. your car would be slipping till 3k and then youre power is fully engaged. with slippage is heat and thats why you need a cooler. now with a stick, its kinda the same as if you wanted to leave at 3k rpms you would have to slip the clutch till then.
with stalls you want a stall to be at peak torque or right about when the torque curve goes flat. this way you get the most out of your car for the dragstrip now if you were building a mud bogger or rock climber you would want a different stall and of course yo uwouldnt have a high rpm motor for rock climbing.
as for lock up.. its what alot of converters do in 3rd and 4th for better MPG. when it locks up it becomes a direct drive like a stick is. non lock up allows slippage which is bad on gas but better for NA cars on topend. now for a boosted car you would want a lockup converter. something with better boost to rpm to mph numbers.
hope this helps and im tired as hell so i may know more in the morning/afternoon
for ex. a 5 speed should start to move around 800 rpms to get it to start moving. now auto is the same way but it actually has some slippage to that amount of rpms where as a clutch is either on or off unless the driver is purposly slipping the clutch.
now say if you had a 3k stall. your car would be slipping till 3k and then youre power is fully engaged. with slippage is heat and thats why you need a cooler. now with a stick, its kinda the same as if you wanted to leave at 3k rpms you would have to slip the clutch till then.
with stalls you want a stall to be at peak torque or right about when the torque curve goes flat. this way you get the most out of your car for the dragstrip now if you were building a mud bogger or rock climber you would want a different stall and of course yo uwouldnt have a high rpm motor for rock climbing.
as for lock up.. its what alot of converters do in 3rd and 4th for better MPG. when it locks up it becomes a direct drive like a stick is. non lock up allows slippage which is bad on gas but better for NA cars on topend. now for a boosted car you would want a lockup converter. something with better boost to rpm to mph numbers.
hope this helps and im tired as hell so i may know more in the morning/afternoon
07-20-2005, 06:07 PM
#4
1st Gear Member
Join Date: May 2005
Location: PA
Posts: 73
RE: stall speed
ORIGINAL: Quik
stall speed is the amount of RPM that it takes before the converter fully engages without any slippage.
for ex. a 5 speed should start to move around 800 rpms to get it to start moving. now auto is the same way but it actually has some slippage to that amount of rpms where as a clutch is either on or off unless the driver is purposly slipping the clutch.
now say if you had a 3k stall. your car would be slipping till 3k and then youre power is fully engaged. with slippage is heat and thats why you need a cooler. now with a stick, its kinda the same as if you wanted to leave at 3k rpms you would have to slip the clutch till then.
with stalls you want a stall to be at peak torque or right about when the torque curve goes flat. this way you get the most out of your car for the dragstrip now if you were building a mud bogger or rock climber you would want a different stall and of course yo uwouldnt have a high rpm motor for rock climbing.
as for lock up.. its what alot of converters do in 3rd and 4th for better MPG. when it locks up it becomes a direct drive like a stick is. non lock up allows slippage which is bad on gas but better for NA cars on topend. now for a boosted car you would want a lockup converter. something with better boost to rpm to mph numbers.
hope this helps and im tired as hell so i may know more in the morning/afternoon
stall speed is the amount of RPM that it takes before the converter fully engages without any slippage.
for ex. a 5 speed should start to move around 800 rpms to get it to start moving. now auto is the same way but it actually has some slippage to that amount of rpms where as a clutch is either on or off unless the driver is purposly slipping the clutch.
now say if you had a 3k stall. your car would be slipping till 3k and then youre power is fully engaged. with slippage is heat and thats why you need a cooler. now with a stick, its kinda the same as if you wanted to leave at 3k rpms you would have to slip the clutch till then.
with stalls you want a stall to be at peak torque or right about when the torque curve goes flat. this way you get the most out of your car for the dragstrip now if you were building a mud bogger or rock climber you would want a different stall and of course yo uwouldnt have a high rpm motor for rock climbing.
as for lock up.. its what alot of converters do in 3rd and 4th for better MPG. when it locks up it becomes a direct drive like a stick is. non lock up allows slippage which is bad on gas but better for NA cars on topend. now for a boosted car you would want a lockup converter. something with better boost to rpm to mph numbers.
hope this helps and im tired as hell so i may know more in the morning/afternoon
exactly what he said!!!!!!!!!!!
Thread
Thread Starter
Forum
Replies
Last Post
BeatnikFink
New Member Area
6
10-01-2015 08:00 PM
