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 Horse Power Into Newton
 TOP From Germany, joined May 2000, 264 posts, RR: 0Posted Wed May 31 2000 18:19:03 UTC (15 years 11 months 1 week 2 days 22 hours ago) and read 16858 times:

 Hello, can anybody tell me which is the conversion of Horse Power in Newton? Thank you, Stephan Duisburg, GERMANY
 Panman From Trinidad and Tobago, joined Aug 1999, 790 posts, RR: 0 Reply 1, posted Wed May 31 2000 19:48:39 UTC (15 years 11 months 1 week 2 days 20 hours ago) and read 16681 times:

 I've got it written down in my Piston Engine notes at home. Expect a reply in about 3-4 hours from now PANMAN
 Aaron atp From United States of America, joined Mar 2000, 533 posts, RR: 2 Reply 2, posted Wed May 31 2000 20:05:21 UTC (15 years 11 months 1 week 2 days 20 hours ago) and read 16677 times:

 Power = (force * distance) / time 1 HP is 746 Watts, which is 746 newton.meters per second aaron
 Sabenapilot From Belgium, joined Feb 2000, 2748 posts, RR: 46 Reply 3, posted Sun Jun 4 2000 17:13:44 UTC (15 years 11 months 5 days 23 hours ago) and read 16642 times:

 Carefull, there are two kinds of horsepower: English: 746 W French: 735 W (or simething close to that....)
 Dnalor From Australia, joined Mar 2000, 370 posts, RR: 0 Reply 4, posted Sun Jun 4 2000 19:12:11 UTC (15 years 11 months 5 days 21 hours ago) and read 16641 times:

 isnt it BHP and DIN then on dyno's there are two distinct methods of measuring horsepower/kilowatts and torque: one is where the engine is accelerating thru its rev range constantly and measured consatntly hence the engine has an accelerated momentum, then the other is where the computer allows the engine to accelerate in 1000 RPM increments then holds the engine under load and measures the power. Bit of useless information there for you to chew on
 Aaron atp From United States of America, joined Mar 2000, 533 posts, RR: 2 Reply 5, posted Sun Jun 4 2000 21:31:24 UTC (15 years 11 months 5 days 19 hours ago) and read 16645 times:

 BHP = (Brake Horsepower = SHP - system losses), a measurement of useful horsepower: "power at the prop" or "power at the wheels." 746 Watts SHP = (Shaft Horsepower) mechanical power produced by the engine with no system losses factored in. 746 Watts Kilowatt = Standard metric measurement of mechanical power, 1000 Watts [not Din, but Dyne = outdated measurement of force instead of power, compare to the newton] Notwithstanding, there are two types of HP Metric HP = (75 Kg.m)/s = 735 watts English HP = (550 lb.ft)/s = 746 watts -properly defined as 33,000 lb.ft per minute, but 33000/60 = 550 the terminology is damning in of itself... Dnalor is certainly right about the methods, but here is a more specific way to get brake horsepower/torque measurements to be done.... to measure BHP: 1.load the propulsion system (a car for instance) on the dyno so that 100% of the rated RPM is reached at full throttle 2. measure the torque in ft.lbs 3. increase the load to reduce RPM by 500 RPM (or any increment you choose 4. measure the torque in ft.lbs 5. go to (3) until you reach idle RPM Torque Produced * (RPM / 5252) = BHP at that RPM Then you can plot a Torque-RPM scale and a HP-RPM scale to get your respective curves. aaron
 TOP From Germany, joined May 2000, 264 posts, RR: 0 Reply 6, posted Sun Jun 4 2000 22:42:04 UTC (15 years 11 months 5 days 18 hours ago) and read 16623 times:

 Thank you! Stephan Duisburg, GERMANY
 Buff From Australia, joined Mar 2007, 0 posts, RR: 1 Reply 7, posted Tue Jun 6 2000 06:55:34 UTC (15 years 11 months 4 days 9 hours ago) and read 16609 times:

 One of you guys needs to give NASA a good heads up!!! Best Regards, Buff from Mars
 Sabenapilot From Belgium, joined Feb 2000, 2748 posts, RR: 46 Reply 8, posted Sun Jun 11 2000 18:07:48 UTC (15 years 10 months 4 weeks 22 hours ago) and read 16591 times:

 When are Americans finally going to quit calculations in: °F, ft, NM, HP, lbf, GAL, lbs. ... There is no relation between those units! Use: °C (or K), m, km, N, W, l, kg The relations between them are obvious.
 Dnalor From Australia, joined Mar 2000, 370 posts, RR: 0 Reply 9, posted Mon Jun 12 2000 04:12:01 UTC (15 years 10 months 4 weeks 12 hours ago) and read 16585 times:

 Aaron, sorry mate I'd have to disagree, if anyone lugged a my car down thru the rev range under boost in 500 rpm incraments they'd be building me a new motor, especially if its a turboed engine. Great way to detonate a motor. I have sat in on many dyno sessions and the load must only be held briefly UP thru the rev range to allow the motor/turbo some respsite, heat soak is always a major consideration while on a dyno, I have witnessed engine failures due to higher stress levels on the dyno than on the track or road
 Aaron atp From United States of America, joined Mar 2000, 533 posts, RR: 2 Reply 10, posted Mon Jun 12 2000 05:10:25 UTC (15 years 10 months 4 weeks 11 hours ago) and read 16581 times:

 sounds good to me... sorry for the inacurracy guys, just trying to show the relationship between horsepower and torque... I've never used a dyno, and just sort of hypothesized the process... aaron
 Dnalor From Australia, joined Mar 2000, 370 posts, RR: 0 Reply 11, posted Mon Jun 12 2000 16:23:20 UTC (15 years 10 months 4 weeks ago) and read 16569 times:

 Cheers Buff and Aaron
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