Thats quite alright, I wanted it for my own records as well.
If you can get PerformanceTrends to include the FOS 2-Stroke correction factor in their Dyno software, I would consider that payment in full![]()
I can not find SAE 890836 available as a free download anywhere so far;
It is available for direct purchase from the SAE MOBIUS here:
https://www.sae.org/publications/tec...ontent/890836/
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Kinky is using a feather. Perverted is using the whole chicken
Awesome!
Thank you very much!
The team I work with has also been in contact with PerformanceTrends, and we also requested that they add the FOS 2-Stroke correction factor.
Hopefully with enough pressure and with the support of the published data they will see fit to add it to their software.
I noticed you were talking about jetting and such, i´ll contribute with my redneck method of getting a lectron into the ballpark if having just one metering rod, and don't want to buy so many before getting it right =)
And the missing part:
Lastly, the result, not fully tuned yet, but full throttle seems to get close.
So Patrick ,after you telling the internet with absolute certainty, I was completely wrong about dyno losses , now suddenly - quote " I dont know".
As I told you several times, doing a run down with the clutch pulled in, is not even remotely a valid test of this metric.
SportDevices has an easily accessed % transmission losses entry page under Corrections - where you can enter 15% or anything that will give you the data as seen as crank power in your simulation.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
I am happy to report, thanks to R-Tech Racing's efforts and the collegiate sharing of research...
PerformanceTrends just sent over a new version of their Dyno DataMite Software for validation testing.
-Updated to include FOS 2-Stroke Weather Correction Factor!
Assuming all works as expected, the new update should be available for download pretty soon.
Thank you Frits, Wayne and R-Tech Racing!![]()
We had honestly given up hope, and were preparing to purchase the SportsDevices DAQ and Software.
This success saves my team ~$1,000 USD that we had basically already commited to spending.
We are VERY excited to have this result.
I have sent 2 screen shots with differing weather to Rein, showing the FOS corrections to send to Performance Trends so they can confirm the code changes needed are correct.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
I am VERY happy to hear it ApolloMotoMoto.
One small remark: I call it the FOS two-stroke air density correction factor instead of weather correction factor. Thankfully most dyno rooms are shielded from the weather so the air temperature and pressure in a good dyno room can adjusted independent from the weather.
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