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Discussion Starter #1
Went to Matthews Fun Machines today where there was one of these trailers with a dyno. It was a Dynojet 168.They were offering free dyno runs to everyone. We registered and had a chance to watch a few bikes run.
Some I saw were:

GSXR-600 90 hp <<< (Appeared Stock)
RC-51 122 hp <<< (Pipes, PC111, Intake Mods, Etc)

Some cruisers and others at less than 100 hp.

I had never had any of my vehicles dyno'ed so I was not sure what to expect. And they were just pulling them in, two small straps, and letting them rip. No rpm readout, just speed and hp.

The 02 PMB with the Full Muzzy SS and Carbon Oval with PC111r and Muzzy map, on this dyno, made...159.9 HP and
was indicated at 145 mph in 4th gear with 17/47 gearing.

Seemed low to me, a fellow rider with previous dyno run was about 9 hp lower than his run a few months back.

It was a Dynojet 168 Mobile "Go-Kart" , I don't know that much about the different types of dynos, but hey, it was free <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">

Here's a few pics.....

Getting Ready...


Dyno Operator, Not me on the bike....


Sorry, No Scanner...







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</p>Edited by: <A HREF=http://pub56.ezboard.com/umwrzx12.showPublicProfile?language=EN>mwrzx12</A> 
at: 9/7/02 3:58:15 pm




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Personally, I pretty much consider dynoing on the same dyno and under similar weather conditions great for baselining and doing mods, but thats where it ends.

You could put your bike to 3 different dynos on the same day and have an 8-10 hp variance either way.

With that being said, if you take into account a vehicles hp reading on a given dyno as being from a "happy" dyno, and down the numbers from there, and they are still big hp or torque, you are probably looking at a very stout motor.

Case in point here on the site would be BigSaints truck. 450 hp, lets say it was a happy dyno, he was really making 420 hp. Those are still very big hp numbers, happy dyno or sad.

What I would like to see is 12's with varying mods dynoed on the same machine one right after another.

Check out this article, its pretty good.

kennedyp.iccom.com/pat/what_is_hp.htm

"Here, hold my trophy while I kiss your girlfriend."</p>
 

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Discussion Starter #3
Thats how I feel too. It was a free run, that was the main reason to do it<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">

There was an 01 zx12 right behind me. His pulled 170.
So 10 hp more than me. The curve looked about the same with mine pulling a little steeper and then flat.

The differences are he had a custom map built for his,
plus K & N filters, and kleen air removed, which may account for the extra 10 hp.
Or could have it been his full Akro system <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">

It was fun anyways, and free <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">

I found this most interesting:
his 17/46 was 148 mph in 4th
my 17/47 was 145 mph in 4th

Dyno guy was impressed with the speed <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">

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That's why I'll only dyno on the same Dynojet at the same shop. I'd go as far as to try to pick the same outside ambient air temp., elevation above sea level and humidity levels as well, makes a difference with the diesels.

Dyno results are best used as a baseline, as IWasBlitz stated. The best thing you can do is to dyno bone stock and then go back to the same dyno after you have made some mods. Not looking at the total RWHP # but the increase in the RWHP #.

That brings about my next question, are all the bikes dyno'd the same way, i.e., 4th gear as mwrzx12's was done ? With the trucks, we gently row through the gears until you are in top (6th) for me, then we coast down to real low rpm's , around 1200 or so, signal the operator to start recording and then put it to the floor and hold it until we reach the rpm cut out, which is about 3600 rpms. The dyno's place a simulated 5,000 lb. load on the wheels and this allows us to make the engine work to produce the highest numbers.

Curious on how you run them with a bike ?

Scott W.

2001 Dodge 3500 CTD making 450 RWHP on #2 alone. 2002 blue ZX-12R, stock, but not for long. I am my own warranty station. </p>
 

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Discussion Starter #6
Saint, on this mobile dyno, they were doing all the bikes in 4th gear. He used the exact same procedure on every one I watched him do. He was very consitent. No problems with how he was runing the show.

And I agree about how dyno numbers should be used.
I did not baseline mine, so I have nothing to compare too.

The bike is a beast, no matter what any dyno says <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">

Hey Saint, I hit my rev limiter finishing out a "minger" today,
how high you revved yours lately????..........Just kidding <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">

Get some miles on that thing <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">



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Thats why you were only getting 159 HP...Only ran 4th gear to redline!!!...He must have been a Harley Lover!!! <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">
'cause I have never seen a Dyno operator run one gear to Redline!!!...I guess thats what you get for nothing!!!


CrotchRocket

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9.67 @ 146.99</p>
 

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Ahhhhh I knew there was an Akra lurking in there somewhere...

Sorry, my Akra colors are showing. <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/eek.gif ALT=":eek">

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Discussion Starter #9
CR, I was watching and listening very closely to my bike when he ran it. They did not get an RPM reading, he was looking at the tach. He may have got close to indicated redline, but my limiter kicks in when the tach indicates 12,500 rpm. Peak HP would be before that anyways, but thought I would mention it.
He did not go there......

Hey we also got free food (if ya wanted a hot dog) free drinks,
a free t-shirt, and talked to motorcycle guys....

What a great way to spend a Saturday morning <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">

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LOL, today I hit a whopping 4 grand...yesterday I hit a whopping 4 grand...tomorrow I'll hit another whopping 4 grand, etc. I know it will pay off in the long run and you should have seen the look on my buddies face when we both took off from a stop today, he on a 2002 Kawa 800 Vulcan. I took it to 4000 in 1st, 4000 in 2nd, 3500 in 3rd, looked back and he was gone <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)"> . ZX12R, there is NO subsitute.

Scott W.

2001 Dodge 3500 CTD making 450 RWHP on #2 alone. 2002 blue ZX-12R, stock, but not for long. I am my own warranty station. </p>
 

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If he would have went to 5th and 6th you would have had around 175HP!!! Give or take a few HP...

My 2000 Red has 177HP @ RW...


CrotchRocket

" I just live my life a 1/4 mile at a time "





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Forgot to add...
How did you get the computer monitor attached to your windscreen and does it affect your WOT runs at all <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/eek.gif ALT=":eek"> . Just kidding, great looking bike. Which tailend is that ? Looks good <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)"> .

Scott W.

2001 Dodge 3500 CTD making 450 RWHP on #2 alone. 2002 blue ZX-12R, stock, but not for long. I am my own warranty station. </p>
 

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Discussion Starter #13
Saint, thats why I put that pic in, because I lined it up like that <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">

Just to see if anybody would notice <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">

I took several/many pics, just posted a couple for reference...

I mentioned the Akro just for you Bob <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">

Here's a couple more pics with Akro's....







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</p>Edited by: <A HREF=http://pub56.ezboard.com/umwrzx12.showPublicProfile?language=EN>mwrzx12</A> 
at: 9/7/02 6:11:12 pm




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Hmmmmmmmmmmmmmmm, a sweet looking faster Silver 01 and an 02 PMB. Looks an awful lot like my ride today.

We did a little "testing" today too now that WD also has 17t on.

01 faster Silver made more hp than 02 PMB.

01 faster Silver won three 2nd gear roll ons with an 02 PMB.

I'm sensing a trend.

01 Silvers Rule!

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I heard first hand (ROY)that it was a paint issue.....dam glad i got the silver lol cw

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Discussion Starter #16
I knew it was just a BAM matter of time....<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">

We better get WD's version first <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">

NO one has done any roll on's with me, I wonder why.....
that little 47 toofer does not add that much <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">

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Discussion Starter #18
Blitz...Thanks for the link....Here's a quote from the article...

<blockquote>Quote:<hr> It doesn't really matter that much
Finally, when we go to get our cars "dyno'd", we're asking someone to measure the power at the wheels. The power losses between the engine and wheels is different for every model of car, and not very well know at that. The dyno's built in the US are probably designed to be within a few percent of a calibrated standard, and are probably stating output in SAE horsepower. The way the car is setup, and the skill of the operator in calibrating the machine, as well as operating the machine, all contribute to inaccuracy. However, the purpose of these tests isn't to know the absolute value of the power at the wheels, but to know when we've made a modification that improves the power in our target operating range. <hr></blockquote>



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Discussion Starter #20
Get Roy to do a trick <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">

Maybe a 140 mph 5th gear 2 mile long "minger" <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">


Glad you liked it <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)">



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