RE: Dyno for the 600RR
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RE: Dyno for the 600RR - 12/23/2005 11:26:27 PM
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chainstretcher
Posts: 4548
Joined: 11/5/2004
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Nah, an assclown would never learn from your mods - -that's why they're assclowns
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It's better to burn out ...
Than high side!
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RE: Dyno for the 600RR - 12/23/2005 11:32:48 PM
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05Tribal
Posts: 919
Joined: 5/23/2005
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I just want to see dyno proof of a slip-on or full exhaust system that solely gives any newer sport bike 10 HP increase. Anybody have proof of that?
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2006 Red & Black CBR1000RR
Street Bike With a few mods
2007 White & Silver CBR600RR
For the wife
2005 CBR600RR
Totally for the track!
Columbus, OH
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RE: Dyno for the 600RR - 12/24/2005 12:42:31 AM
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pizzle954rr
Posts: 194
Joined: 8/17/2005
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You can have two different types of dynos done. One being with the motor on the bike, the other with the motor off the bike and on a dyno stand. The first dyno will give a reading considering the amount of force used to turn the wheel. The second would give a more true reading of exactly how much power/torque the motor actually possess b/c their isnt any unsprung weight to factor in. You can however tell the person dynoing your bike that you have changed sprockets and he can compensate for that. This is the formula for figuring your percentage of torque gained after a sprocket change. ((new rear/new front)x(old front/old rear)-1)x100 After I went -1/+2 on my bike I gained 11.6% torque over factory. I havent however figured out how to convert this to ft. lbs.
< Message edited by pizzle954rr -- 12/24/2005 12:43:27 AM >
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CBR 954rr 2002
Flapper Mod
GPR STABILIZER
VORTEX REAR SETS
NIGHT STALKER LED KIT
REMOVED BLINKERS,GRAPHICS,ETC.
DandD slip-on
PAZZO SHORTY LEVERS
VORTEX FRAME SLIDERS
520 CONVERSION(RENTHAL SPROCKETS/DID CHAIN)
K&N FILTER,Galfer Lines
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RE: Dyno for the 600RR - 12/24/2005 1:24:08 AM
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Turnin20s
Posts: 854
Joined: 12/12/2005
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quote:
This is the formula for figuring your percentage of torque gained after a sprocket change. ((new rear/new front)x(old front/old rear)-1)x100
Good post, I thought there should be some kind of formula to adjust for the gearing. I can't wait to see your numbers and not the manufactures horsepower numbers.
-Jesse-
BTW Merry Christmas everyone
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RE: Dyno for the 600RR - 12/24/2005 11:25:48 PM
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clemson725
Posts: 151
Joined: 10/4/2005
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I'm not arguing. I'm stating a fact. When a front sprocket is changed like that, it makes the bike accelerate faster. That means the bike is overcoming the inertia with an force that is in the opposite direction. This force times the radius of the rear wheel is torque (ft*lbs). e.q. 140lbs of force at 1 foot radius is 140 ft-lbs. Everybody on this forum agrees that a lower gearing does this. They should, its basic physics. Since the horsepower equation is based on torque and RPM, when either of the two increase, horsepower also increases. Therefore, for any given RPM, with an increased torque, there is an increase in horsepower. I'm no "moderator" but i do know my physics. Thats one of the two degrees I have. Again, not arguing, just stating a fact. Dont take it personally.
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ALL polished,chrome bar ends,flush mount signals,carbon look mirrors,LP wind screen,carbon fiber fender,high mount 2 bro full system,keihen flat slides,k&n filters,mid range cams,cleaned up head,regeared,17" front wheel, single sided swing arm,fox shock
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RE: Dyno for the 600RR - 12/25/2005 1:24:49 PM
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chainstretcher
Posts: 4548
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Just can't let it die can ya? So as your torque is increasing with the gearing change what do you think is happening to the rpms? Well? I've witnessed dyno runs with different gearing and the POWER doesn't change. Yes, the torque curve will change in relation to rpms -- you cannot add HP by changing gearing. If you can do that then you've proven that conservation of energy theory wrong. I've never contended that changing the gearing won't yield you low end torque -- it does. Merely that it doesn't affect HP. Oh, the back to back runs with different sprockets weren't to prove or disprove any theorys -- just 1/4 tests.
I'm wondering if you've even ever put your bike on a dyno???? If you had then you'd know that the "sweet" gear for HP is 5th. There's a lot more torque in 1st but the best HP numbers almost always come from 5th. Seems like the bike would have 200hp in 1st and like 50hp in 6th according to your twisted logic.
So until you add some dyno experience to your physics degrees stop spouting what you really don't know for facts. I may just be a lowly moderator but I have wads of dyno experience.
Damn, wish I'd contacted you before I built my last turbo bike -- I coulda just went big on the back and made 1000hp while all those "unknowing" mechanics have to do extra engine work.
And ya didn't even wish me a Merry Christmas back -- what a bitter old man you are
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It's better to burn out ...
Than high side!
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RE: Dyno for the 600RR - 12/25/2005 6:29:17 PM
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clemson725
Posts: 151
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Ha.......and what do you think a dyno measures from? Certainly not just the motor which is the control volume you're claiming. The dyno runs that youre worlds best at, are taking from a spot outside the controled area you're talking of. YES POWER DOES CHANGE. The dyno may not pick it up but it does change. Dyno's dont notice every little thing, such as your extra large ego that makes you seem to believe you can rewrite Newton's laws of physics. Surely you're not one of the guys that thinks peak horsepower is important and regardless of if the torque and hp increases at lower rpms, its not different because the peak is still the same??????? Thats ludicrious. If you'd relieve the pressure in your big head and read what i actually wrote, you'd see that i said FOR ANY GIVEN RPM (That means RPM is a constant) torque increases so horsepower MUST, not maybe, not might, it MUST MUST increase. Draw your system out, circle your controlled volume and you'll realize the gearing is OUTSIDE of it. And the dyno also measures OUTSIDE of it. I have a mechanical engineering degree to go along with the physics degree. I'd be happy to scan them and show you.
I'm wondering if you've even ever put your bike on a dyno???? If you had then you'd know that the "sweet" gear for HP is 5th. There's a lot more torque in 1st but the best HP numbers almost always come from 5th. Seems like the bike would have 200hp in 1st and like 50hp in 6th according to your twisted logic
and that doesnt make any sense whatsoever. I'm only dumber for having read that. Think about what a dyno measures, and get back to me when you understand it. Like i said before, i couldnt give a rats rear what a dyno says because in the real world it means very little. Its just all relative on a dyno.
In brief for all of those reading that cant decide.....Lower gear = higher torque at lower rpm... horsepower will go up for any given rpm with an increased torque. Ol stretcher here seems to think think it doesnt. Just look at the dyno curve with different gearing. Your overall hp might not be different, but compare a specific RPM, such as 3000RPM. Betcha your torque will be more which by the equation, P=omega*T where omega is the radial velocity (rpm) and T is torque, means your P (power) must also go up.
_____________________________
ALL polished,chrome bar ends,flush mount signals,carbon look mirrors,LP wind screen,carbon fiber fender,high mount 2 bro full system,keihen flat slides,k&n filters,mid range cams,cleaned up head,regeared,17" front wheel, single sided swing arm,fox shock
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RE: Dyno for the 600RR - 12/25/2005 6:37:32 PM
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clemson725
Posts: 151
Joined: 10/4/2005
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Ya know what..... I dont even care. I'm retiring my membership from this forum because of the misleading information that i have seen from a certain person several times. I'm not necessarily talking about this thread either.
Chainstretcher, if you'd listen and try to learn every once in a while, maybe you could change the name to Chainbreaker.
Thanks to all the other guys on the forum.
Don, could you please remove my provile and info from the forum? Thank you.
< Message edited by clemson725 -- 12/25/2005 6:41:40 PM >
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ALL polished,chrome bar ends,flush mount signals,carbon look mirrors,LP wind screen,carbon fiber fender,high mount 2 bro full system,keihen flat slides,k&n filters,mid range cams,cleaned up head,regeared,17" front wheel, single sided swing arm,fox shock
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RE: Dyno for the 600RR - 12/25/2005 8:08:55 PM
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chainstretcher
Posts: 4548
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You're bringin me to tears sir --
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It's better to burn out ...
Than high side!
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RE: Dyno for the 600RR - 12/25/2005 10:19:03 PM
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doncollins
Posts: 6257
Joined: 7/21/2005
From: OH, KY & WV
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I try to start something nice and see what I do....
clemson725, if you read this.... you're debating with someone that has the same rights as me on this forum.
If you or anyone can prove to me or another moderator that someone is posting misleading information... that will cause harm to the rider or the bike, we'd be happy to remove it. You and chain seem to have, from my point of view, a difference of opinions. Try not to take things so personal. I do not have any experience with dynos and that is why I started this thread. I hate to see you go, but as they say, if you must go... don't go away mad.
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RE: Dyno for the 600RR - 12/27/2005 2:22:24 PM
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Anubis
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Joined: 6/27/2005
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WHooooooooooooooooooo, someones mad. Hey is it really worth arguing about, lets all kiss n make up
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Bla Bla Bla - Just Ride It !!
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RE: Dyno for the 600RR - 12/27/2005 8:43:41 PM
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NINE2NINE
Posts: 1495
Joined: 10/6/2005
From: Indiana
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wow. im going to overlook all the bickering and give my opinion to the original question at hand. i have zero dyno experience and nothing to add or facts to back up baseless comments about gearing changes and how they affect dyno numbers. but im more into how it feels when riding and don't worry about what numbers are on a paper. so here it goes.
my opinion is that you (doncollins) wants a baseline dyno sheet for comparisons after the modifications that you plan on adding. i would take the bike back to stock gearing and have a go at the dyno. then i would change it back, add all of the other stuff that you want, and dyno it again with everything done. that way you get to see what the sum of all the parts do for performance.
it would be awesome to dyno at each step in the build up, but that is totally unfeasable. if someone has that much expendable income i can point you in the direction of a great charity. the "buy nine2nine a newer bike fund". any and all donations are accepted!
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