Go Back   6th Gen Accord DIY and Performance Forums > General > General Chat

General Chat For stuff that doesn't go anywhere else

Register to remove these ads


Reply
 
Thread Tools Search this Thread
  #1  
Old 09-01-2010, 04:45 PM
blacknight's Avatar
blacknight blacknight is offline
Superman, uh mod


Points: 82,497, Level: 89 Points: 82,497, Level: 89 Points: 82,497, Level: 89
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Sep 2005
Location: Bergen County, NJ
Posts: 6,707
Rep Power: 102
blacknight should be someone you can trustblacknight should be someone you can trustblacknight should be someone you can trust
Send a message via AIM to blacknight
The Difference Between Horsepower and Torque

Difference between HP & torque
__________________
380HP/415Ft. Lbs. Torq.
Yeah, It's got a HEMI
Yeah, its tuned by Predator
HID Kit Club #11
2008 Hayabusa (yeah, its fast)
Rest in Peace..THE BLACKNIGHT
Reply With Quote
  #2  
Old 09-01-2010, 05:02 PM
CG6Lemon's Avatar
CG6Lemon CG6Lemon is offline
Detailing Enthusiast


Points: 43,922, Level: 64 Points: 43,922, Level: 64 Points: 43,922, Level: 64
Activity: 3% Activity: 3% Activity: 3%
 
Join Date: Jun 2008
Location: S.F Bay Area, CA
Posts: 7,699
Rep Power: 47
CG6Lemon is somewhat reliable
Member Photo Albums
Send a message via Yahoo to CG6Lemon
Re: The Difference Between Horsepower and Torque

nice thread BN
__________________

DetailedByPrecision
Paint Correction - Ceramic Paint Coatings - Auto Detailing
Serving San Francisco Bay Area
Phone: 415-601-4291
Follow us on: Facebook
https://www.facebook.com/DetailedByPrecision
Follow us on: Instagram
https://www.instagram.com/detailedbyprecision
Reply With Quote
  #3  
Old 09-01-2010, 05:51 PM
98ExAccordwv's Avatar
98ExAccordwv 98ExAccordwv is offline
I'm Old


Points: 23,561, Level: 47 Points: 23,561, Level: 47 Points: 23,561, Level: 47
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Mar 2008
Location: WV
Age: 32
Posts: 2,641
Rep Power: 62
98ExAccordwv is more helpful than most
Member Photo Albums
Re: The Difference Between Horsepower and Torque

Nice find.
__________________
^^^ Clicky ^^^

Reply With Quote
  #4  
Old 11-14-2012, 09:44 AM
accordftw accordftw is offline
Member
Points: 773, Level: 7 Points: 773, Level: 7 Points: 773, Level: 7
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Nov 2012
Location: Rochester, NY
Posts: 51
Rep Power: 0
accordftw is an unknown quantity at this point
Re: The Difference Between Horsepower and Torque

Difference between Hp and Torque, HP is how fast you hit the wall torque is how far the wall moves.
__________________
04 spec v- totalled
99 accord LX- I/H/E Stage 2 clutch w/ flywheel FnF type 1's and more to come.
Reply With Quote
  #5  
Old 11-27-2012, 01:04 PM
CreepyWilly CreepyWilly is offline
Member
Points: 370, Level: 4 Points: 370, Level: 4 Points: 370, Level: 4
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Nov 2012
Location: Quebec
Posts: 76
Rep Power: 25
CreepyWilly is an unknown quantity at this point
Re: The Difference Between Horsepower and Torque

Or: Torque is the capacity to put an object into acceleration, HP is the capacity to maintain & produce force. So lets say you can accelerate at 10m/s² with X HP, torque definite how fast you will reach that acceleration rate.

That's how it goes engineering wise.
Reply With Quote
  #6  
Old 11-27-2012, 01:34 PM
blacknight's Avatar
blacknight blacknight is offline
Superman, uh mod


Points: 82,497, Level: 89 Points: 82,497, Level: 89 Points: 82,497, Level: 89
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Sep 2005
Location: Bergen County, NJ
Posts: 6,707
Rep Power: 102
blacknight should be someone you can trustblacknight should be someone you can trustblacknight should be someone you can trust
Send a message via AIM to blacknight
Re: The Difference Between Horsepower and Torque

Originally Posted by CreepyWilly View Post
Or: Torque is the capacity to put an object into acceleration, HP is the capacity to maintain & produce force. So lets say you can accelerate at 10m/sē with X HP, torque definite how fast you will reach that acceleration rate.

That's how it goes engineering wise.
OR

In laymans term..
Torque gets you moving.
HP keeps you moving

LOL
__________________
380HP/415Ft. Lbs. Torq.
Yeah, It's got a HEMI
Yeah, its tuned by Predator
HID Kit Club #11
2008 Hayabusa (yeah, its fast)
Rest in Peace..THE BLACKNIGHT
Reply With Quote
  #7  
Old 12-27-2012, 10:00 PM
Ksurk55 Ksurk55 is offline
Junior Member
Points: 72, Level: 1 Points: 72, Level: 1 Points: 72, Level: 1
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Dec 2012
Location: Hollidaysburg
Posts: 2
Rep Power: 0
Ksurk55 is an unknown quantity at this point
Re: The Difference Between Horsepower and Torque

very informing
Reply With Quote
  #8  
Old 08-21-2013, 11:41 PM
xci.ed6's Avatar
xci.ed6 xci.ed6 is offline
Senior Member
Points: 23,020, Level: 46 Points: 23,020, Level: 46 Points: 23,020, Level: 46
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Sep 2007
Location: Tampa Bay
Posts: 2,909
Rep Power: 58
xci.ed6 is more helpful than most
Member Photo Albums
Re: The Difference Between Horsepower and Torque

I like the analogy of a weight on the end of a wrench for torque. In fact, I use that method when I'm torquing something like lug nuts. If my wrench is 2ft long, I weight 150lbs, and I need to torque it to 100lb/ft, I divide the lb/ft in half (because of the 2ft wrench), and put 1/3 of my weight on it (50lbs).

The explanation of HP is a little ****ed though. HP = TQ x RPM / 5252.

Power is how fast you can make torque. The analogy to a bicycle was good there, but they didn't explain it very well. At the pedals (or crank), assume the pedal arms are 1ft long, and I still weigh 150lbs. The maximum torque I can make at the crank is 150lb/ft, at zero RPM. The faster I pedal, the less of my weight I can get onto the pedal before it's down and I must switch to the other foot. My redline would be the fastest I could possibly spin the pedals, probably about 60rpm, and I would make pretty much 0 torque there.

If you graphed that you would have my torque curve.

At 0 RPM I would make 0 HP. Because torque, without movement, is nothing.
At 60 RPM I would make 0 HP. Speed without torque is also nothing.

At 30 RPM....

30 x 75 = 2250
2250 / 5252 = 0.42 HP!!!

Remember this is all at the crank, no matter what gear, I make 0.42 HP at 30RPM

Power is conserved, sort of, we'll just ignore friction losses. Lets say the bike has only 3 gears. Low, Direct, & Overdrive. Low gear is 2:1, Direct is 1:1, and Overdrive is 1:2.

In low gear at 30rpm, my rear axle would spin half the speed of the crank, or 15rpm. I would still have 0.42HP, so torque, at the back, must go up. That's the point of low gear. I would have 150lb/ft of torque at the rear axle.

Direct is just that. What goes in is what goes out. On old RWD cars, before overdrive was common, this was the top gear, 3rd or 4th. Hence the nomenclature of 'over drive', which.....

In overdrive the rear axle spins faster than the crank. At my 30 RPM, the crank would spin at 60 RPM, but I still have only 0.42 HP so my torque MUST decrease. I would only have 37.5lb/ft of torque available at that rear axle. No hills in OD.


In a car, after the transmission is a final drive, the differential, which further reduces RPM to give torque. A '4.10' or '3.73' refers to the reduction, that's 4.10:1, or for every 4.1 turns of the driveshaft, you get 1 turn of the axle, of course that also multiplies the torque by 4.1 though. This is done in the differential because big torque needs big parts, like why you don't use a 1/4" ratchet to remove your lug nuts. If you're transmission had to do this, all of the gears would need to be about 4 times larger, and it would weigh about as much as the car.


You can apply this to electrical too. Watts are power, in fact there are 747 watts in one HP. Volts X Amps = Watts. Volts could be described as RPM, because it's potential. Amps would be like torque because the more there are, the bigger the parts need to be. And again, one without the other is nothing.
__________________
75 CB360-magnum cafe 81 GL1100-mild cafe 83 CB550/650SC- Awesomeness. 03 CB900-the wife's 06 CB600(a)-RIP 06 CB600(b) -led tail, undertail, db bars, shorty levers 00 Accord EX-V6-4d-SSM- 01/02 coupe fr, hitch, radiator push fans,TruHart coilovers, 18x9 & 215/45 tires, Honda CB600 mirrors, fakual trans, PVC CAI, 2x lights
Reply With Quote
  #9  
Old 08-22-2013, 10:09 AM
blacknight's Avatar
blacknight blacknight is offline
Superman, uh mod


Points: 82,497, Level: 89 Points: 82,497, Level: 89 Points: 82,497, Level: 89
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Sep 2005
Location: Bergen County, NJ
Posts: 6,707
Rep Power: 102
blacknight should be someone you can trustblacknight should be someone you can trustblacknight should be someone you can trust
Send a message via AIM to blacknight
Re: The Difference Between Horsepower and Torque

Originally Posted by xci.ed6 View Post
I like the analogy of a weight on the end of a wrench for torque. In fact, I use that method when I'm torquing something like lug nuts. If my wrench is 2ft long, I weight 150lbs, and I need to torque it to 100lb/ft, I divide the lb/ft in half (because of the 2ft wrench), and put 1/3 of my weight on it (50lbs).
But here's the kicker....
Without some type of measuring device, how can you accurately determine a 1/3 of your weight?
__________________
380HP/415Ft. Lbs. Torq.
Yeah, It's got a HEMI
Yeah, its tuned by Predator
HID Kit Club #11
2008 Hayabusa (yeah, its fast)
Rest in Peace..THE BLACKNIGHT
Reply With Quote
  #10  
Old 08-22-2013, 10:27 PM
xci.ed6's Avatar
xci.ed6 xci.ed6 is offline
Senior Member
Points: 23,020, Level: 46 Points: 23,020, Level: 46 Points: 23,020, Level: 46
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Sep 2007
Location: Tampa Bay
Posts: 2,909
Rep Power: 58
xci.ed6 is more helpful than most
Member Photo Albums
Re: The Difference Between Horsepower and Torque

You can't, but it's better than kicking the **** out of the lug wrench.

I probably can, but I turn wrenches every day. Though I typically use a digital torque wrench, but sometimes you just don't have one.
__________________
75 CB360-magnum cafe 81 GL1100-mild cafe 83 CB550/650SC- Awesomeness. 03 CB900-the wife's 06 CB600(a)-RIP 06 CB600(b) -led tail, undertail, db bars, shorty levers 00 Accord EX-V6-4d-SSM- 01/02 coupe fr, hitch, radiator push fans,TruHart coilovers, 18x9 & 215/45 tires, Honda CB600 mirrors, fakual trans, PVC CAI, 2x lights
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


» Featured Ride
CHECK OUT THIS WEEK'S FEATURED RIDE!



Powered by vBadvanced CMPS v3.2.3