HP vs Torques for dummies like me
The green machine demonstrates HP The rusty machine demonstrates torques Clicky
Forum Discussion
I've over heard engineers on my staff argue over this...
Torque is the twisting force on a shaft...say drive shaft for this discussion
HP is the work that drive shaft does...or...work it can do
When the drive shaft has 1,000,000 ft/lbs of torque on it and the drive shaft
does *NOT* turn...there is *NO* HP...
Once it turns, whether a fraction of a turn or whole turns...there is HP being
developed
Because the formula for HP is:
And shows the relationship between torque and HP...why there can be tons
of torque and no HP if that shaft does NOT turn...
Guess which engineer was my fav and which I transferred to another
design team... :B
PS...guess which was the one inherited and which I had hired... :C
They were designing wind-generator gear boxes...main input shaft
was IIRC ~8 inches in dia...and the output shaft about 16 inches
in dia...made from heat treated 4160 and Timken's dia around 20" or so...
Torque is the twisting force on a shaft...say drive shaft for this discussion
HP is the work that drive shaft does...or...work it can do
When the drive shaft has 1,000,000 ft/lbs of torque on it and the drive shaft
does *NOT* turn...there is *NO* HP...
Once it turns, whether a fraction of a turn or whole turns...there is HP being
developed
Because the formula for HP is:
HP = torque x RPM divided by 5252
And shows the relationship between torque and HP...why there can be tons
of torque and no HP if that shaft does NOT turn...
Guess which engineer was my fav and which I transferred to another
design team... :B
PS...guess which was the one inherited and which I had hired... :C
They were designing wind-generator gear boxes...main input shaft
was IIRC ~8 inches in dia...and the output shaft about 16 inches
in dia...made from heat treated 4160 and Timken's dia around 20" or so...
