Dyno ?'s

RADRB8 · April 12, 2009, 10:06:57 PM

I have a o6 R6 with a Leo Vince Full Ti race system and a PC mapped for U4.2 putting out pretty decent #'s (I think)... around 115hp (Dynojet)...

I'm racing a few selected ASRA events this year and have some questions...

1. Any of you who have raced ASRA Sportbike been over the 105hp limit on their factory pro dyno?

2. What kind of #'s are average for a set up like mine?

3. Is there anything special as far as bike tech that differs from CCS in any way that I need to be aware of?

Thanks in advance...

RAD

MELK-MAN · April 12, 2009, 11:57:00 PM

I think your bike will be ok. The 105hp limit is about 15% or so below what the dyno your bike is on typically. A supersport bike making 105hp on the asra dyno is a pretty strong supersport bike. Multiply your 115hp by .85 and that is about what the asra dyno would read..i think..

Greg_Williams · April 13, 2009, 09:43:59 AM

We run a Factory Pro dyno in the shop. I would expect a bike like yours with U4.2 and a good map to make somewhere in the range of 96 to 102 hp. Get your bike on the Dyno early int the weekend to check your hp.

123user · April 13, 2009, 11:38:26 AM

Quote from: Greg_Williams on April 13, 2009, 09:43:59 AM
We run a Factory Pro dyno in the shop. I would expect a bike like yours with U4.2 and a good map to make somewhere in the range of 96 to 102 hp. Get your bike on the Dyno early int the weekend to check your hp.

Really, only 96 hp for a newer 600 on a Factory Pro... They aught to move 600's to the lightweight class!!

Super Dave · April 13, 2009, 12:35:10 PM

Quote from: Greg_Williams on April 13, 2009, 09:43:59 AM
We run a Factory Pro dyno in the shop. I would expect a bike like yours with U4.2 and a good map to make somewhere in the range of 96 to 102 hp. Get your bike on the Dyno early int the weekend to check your hp.

I'd agree with Greg on that. Seems like a bike with 118HP on a Dynojet dyno will be below 104HP on the Factory Pro Dyno. Might be close if the weather swings. Always check it out on the dyno and go from there.

RoyHefner · April 13, 2009, 04:09:37 PM

So as a hypothetical situation:

You put your bike on the dyno before your race and you're over the 105 HP limit. What are the typical solutions to get it under the limit? Different fuel and/or map? Restrict the airflow?

123user · April 13, 2009, 04:42:51 PM

If I was in a hurry, I'd switch to a non-oxygenated fuel, or replace the oil with some 50 weight... that'll probably kill a couple of HP in parisitic loss.

But like Greg alluded to, 105hp on a Factory Pro is a lot. It would take some pretty meticulous tuning to get a stock motor'd 600 to that point.

The "corrected" hp equation should predict HP pretty closely regardless of weather... and it'll correct in either direction. This weekend in KC the weather was better than the ASME standard... which "corrected" my hp down instead of up. I kept seeing 98-99hp real-time on the screen, but after the correction it went down to 97.5 hp.

Super Dave · April 13, 2009, 05:24:24 PM

Duct tape.

123user · April 13, 2009, 05:53:04 PM

yes, yes how could I forgot about duct tape... should I apply that to my eyes or my ears?

Super Dave · April 13, 2009, 06:09:39 PM

To the air cleaner.

Noidly1 · April 13, 2009, 10:38:05 PM

How do #'s from the Factory Pro compare to the Dynojet 250IX Motorcycle Atv/Utv dynamometer ?

My '01 R6, after many, many adjustments, finally came up with 97.1 Hp, 44+ tq. (corrected) on the 250IX.
How will it differ?

BTW, for some reason, it likes to run a bit fat...

123user · April 14, 2009, 09:17:04 AM

There is a break down on factory pro's website. Also a large collection of dyno runs for lots of different bikes. According to FP, a stock R6 should make somewhere between 86-92 if its running properly.

If you're anywhere between 90 and 130 on a FP dyno, they claim that a DynoJet will read about 15% higher. However, builders will tell you that the difference can be as much as 18%.

The short answer is that there is no hard and fast correlation between FP and DJ. It'll be somewhere between 12%-20% depending on a large variety of factors.

After all, you're comparing a dyno that can hold the engine at any RPM and throttle position and measures the electrical power required to hold it there (a direct measurement of hp) to a dyno where a big heavy wheel is spun up and HP is calculated based upon how fast the wheel spins up... which is affected by crank weight, wheel/tire weight, throttle opening speed, and about a hundred other factors.

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Dyno ?'s