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(OT) Question for the engineers on the list
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Tom,
You won't get any more horsepower, you will actually lose some due to
frictional losses in your reduction box. What you will get is a
multiplication of torque. Horsepower is TORQUE times RPM divided by 5252.
All things being equal, in a gearbox, when you reduce the RPMs by 4, the
torque available increases by 4. BTW, you can't make more power without
putting more energy into the system.
HTH.
-Dick-
78 Scirocco
Original Owner
http://members.aol.com/sailingfc/
(B.S. Mechanical Engineer & farm boy)
In a message dated 10/30/02 7:39:52 PM Pacific Standard Time,
VeeWdriver@aol.com writes:
OK, I need some mechanical engineering advice. I'm working with a small
tractor that has a diesel rated at 14HP. It has a mid-mounted PTO rated at
11HP at the shaft at 2200RPM. I am going to reduce that through a 1:4 gear
ratio chain and gear setup at the rear to run at the standard 540 RPM for a
tractor PTO. If I do this, will I in fact get more HP at the PTO? Like say
44HP???
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<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">Tom,<BR>
You won't get any more horsepower, you will actually lose some due to frictional losses in your reduction box. What you will get is a multiplication of torque. Horsepower is TORQUE times RPM divided by 5252. All things being equal, in a gearbox, when you reduce the RPMs by 4, the torque available increases by 4. BTW, you can't make more power without putting more energy into the system.<BR>
HTH.<BR>
<BR>
-Dick-<BR>
78 Scirocco<BR>
Original Owner<BR>
http://members.aol.com/sailingfc/<BR>
(B.S. Mechanical Engineer & farm boy)<BR>
<BR>
<BR>
In a message dated 10/30/02 7:39:52 PM Pacific Standard Time, VeeWdriver@aol.com writes:<BR>
<BR>
OK, I need some mechanical engineering advice. I'm working with a small <BR>
tractor that has a diesel rated at 14HP. It has a mid-mounted PTO rated at <BR>
11HP at the shaft at 2200RPM. I am going to reduce that through a 1:4 gear <BR>
ratio chain and gear setup at the rear to run at the standard 540 RPM for a <BR>
tractor PTO. If I do this, will I in fact get more HP at the PTO? Like say <BR>
44HP???</FONT></HTML>
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