SuzukiSavage.com - 5000 rpm safe?

batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: 5000 rpm safe? Reply #45 - 01/05/17 at 18:33:52 Life is hell! I was 99.068% right and .032% wrong ! take the stars ,take 'em take 'em!!!
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Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: 5000 rpm safe? Reply #46 - 01/05/17 at 18:52:54 justin_o_guy2 wrote on 01/04/17 at 21:12:29: I'm still trying to understand why the torque/HP graphs cross at That RPM. Because 5252 is in the denominator. HP and torque ALWAYS cross at 5252 RPM. It's just a function of the math involved.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: 5000 rpm safe? Reply #47 - 01/05/17 at 18:53:08 Ruttly wrote on 01/05/17 at 18:25:07: Armen would know why that is ! Yeah but nobody could read his explanation. You Know he'd drill the blasted thing full of holes.
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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: 5000 rpm safe? Reply #48 - 01/05/17 at 18:59:47 Well here we go!HP=TORQUE x rpm /5252 When Rpm reaches 5252 these numbers cancel each other out leaving hp=torque and this time I'm 100% right.
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Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: 5000 rpm safe? Reply #49 - 01/05/17 at 19:02:54 hp = torque * RPM / 5252 hp = torque * 5252 / 5252 hp = torque * 1 hp = torque ALWAYS!!
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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: 5000 rpm safe? Reply #50 - 01/05/17 at 19:40:05 Kris your a parrot one demerit!
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: 5000 rpm safe? Reply #51 - 01/05/17 at 19:49:31 HP = torque at 5252 ,,, But Why?
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Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: 5000 rpm safe? Reply #52 - 01/05/17 at 20:02:33 https://en.wikipedia.org/wiki/Horsepower Read History of the unit and Calculating Power. The constant 5252 is the rounded value of (33,000 ft·lbf/min)/(2π rad/rev).
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Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: 5000 rpm safe? Reply #53 - 01/05/17 at 20:04:20 batman wrote on 01/05/17 at 19:40:05: Kris your a parrot one demerit! Just for JOG!
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norm92de Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1180 El Paso TX Gender:	Re: 5000 rpm safe? Reply #54 - 01/05/17 at 21:29:11 This sounds like Chris Katan, Why, Why , Why.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: 5000 rpm safe? Reply #55 - 01/05/17 at 21:44:30 The constant 5252 is the rounded value of (33,000 ft·lbf/min)/(2π rad/rev). That's helpful, thanks.
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LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10668 Oklahoma Gender:	Re: 5000 rpm safe? Reply #56 - 01/06/17 at 01:01:53 So are HP & Torque values equal on the LS650 ? That is a bit high, especially on a stock unit. What about for a 650 twin ? 4 cylinder ? My truck engine ? I don't think the LS650 knows anything about math.
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Re: 5000 rpm safe?
Reply #57 - 01/06/17 at 03:22:24

LANCER wrote on 01/06/17 at 01:01:53:

So are HP & Torque values equal on the LS650 ?

I don't think the LS650 knows anything about math.

Your engine may not know anything about math - but the HP number is created by math.....Horsepower ratings are a function of math (torque x rpm.....with the 5,250 number added to make the numbers somewhat meaningful).

The engine produces torque at the crankshaft, and when you multiply that value times the rpm....you are creating a mathematical measure of the work (HP) that can be done over a specific period of time.

The formula doesn't care how many cylinders you have - but most likely the torque value does.

The stock Savage engine is listed as having 31 HP @5,400 rpm, and 37 ft/llbs @3,400 rpm. (This goes a long way toward explaining why your engine stops pulling hard as you approach the 6,500 rpm redline - the HP drops off for that last 1,100 rpm).

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Re: 5000 rpm safe?
Reply #58 - 01/06/17 at 12:15:14

as the speed of the ls -40 gets to 5252rpm (around 80+ mph) you have used about 27+ hp ,mean while the torque that peaked at 34/3500 rpm has slid down to 27+ ftlbs . (all figures approx.)so yes they still cross at 5252rpm.If you rebuild your motor like some have ,and use a better cam and piston you gain more hp and torque ,the torque may still peak at 3500 to 4000 rpm but the torque curve tends to flatten ,it still drops off but at a reduced rate. so at 5252 your hp and torque have higher values,but torque still drops of sharply after 5252 rpm.

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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5112 Manteca , CA Gender:	Re: 5000 rpm safe? Reply #59 - 01/06/17 at 12:47:17 Depends on the cam
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