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[joe_lyons50023]

I'm done with this project its all yours Bob.  I posted my data as did mayor.  You use it how you wish, it won't help me one bit and with no effort on your end I really don't care about it anymore.

[FLTRI]

Sorry Joe,
I only brought this whole thing up due to the complaints that WOT extension isn't reliable enough.
Soooo, I got the idea if the Dyno owners here would participate in a blind test to see if voltage = AFR would work for these bikes as it did for me some 20 years ago when I was a race engineer for teams.

I saw where it has been done in automotive forums with appearant success.

Definitely only started this thread to answer the question.
Seems answer is yes but no one posted their relationship of voltage to resultant AFR.

Joe, again this was not for the benefit of the Dyno owners, it was an attempt on my part to get the guys with the equipment to decide yes or no. If yes it would help to know the findings you guys came up with as far as voltage to resultant AFR.

A lot of misunderstanding and heated posts fighting the whole idea...probably due to it coming from me because of my relationship to SC.

Wanting to move on. Now the question becomes:
Will the folks who did the test be willing to share what the relationship of voltage to AFR is from their testing?

Sorry for all the misunderstanding surrounding this thread,

Bob

[whittlebeast]

I have see plenty of data over the years and would never consider doing this with any motor I care about. The only thing you can see on a narrow band is "It apparently is not way too lean."

Andy

[FLTRI]

I have see plenty of data over the years and would never consider doing this with any motor I care about. The only thing you can see on a narrow band is "It apparently is not way too lean."

Andy

So Andy, thanks for your input.
Please post up o2 voltage vs actual measured AFR so we can see why your HD data is different that the guys who ACTUALLY DID THE TEST.
Since you do not have a Dyno maybe you have WOT data from another engine with measured AFR you can share?
Show TP vs Sensor output and compared to actual measured AFR.

You're a bit late as we've determined there is a reliable relationship from voltage to AFR  at WOT.

Remember Andy, this is WOT ONLY.

Bob

[mayor]

I haven't given up yet on this topic yet, just haven't had time to do much with it lately.  I hope to play with my '09 DBW (205 cal) at some point this fall.  I just need about another 6 or 8 more hours in each day to get to where I can play again. 

[whittlebeast]

The test would be fairly time consuming but here is what it would take.

Set the bike up on the dyno at say 13 AFR at WOT and 13.0 on the target AFRs

Then uninstall the widebands and set the target AFRs to say 14 and do about 20 second gear pulls on the entrance ramp with the data loggers recording the Generic O2 data log.

Then repeat the same test with the target AFRs set at 13.5 and repeat the same test.

then repeat at 13, 12.5, 12 and say 11.5

Post up all that data and I will be happy to post up the results.  Heck, by the time you get that done, Phil should have MLVHD doing mean and standard deviation on the data.

Andy

[FLTRI]

Andy,
Go back to the beginning of this thread and read.
Testing has been done.
You are into this a day late and a dollar short! Lol
Bob

[whittlebeast]

Testing done by people that many of us are thinking had a predetermined conclusion.

I want to see the raw data.

Andy

[FLTRI]

Testing done by people that many of us are thinking had a predetermined conclusion.

I want to see the raw data.

Andy

Yep! That's for sure! Most everyone thought it could not be done.
So if that skews the results I agree but it skews it in the wrong direction if anything!
Bob

[whittlebeast]

Where did anyone post the raw data?

Andy

[FLTRI]

Where did anyone post the raw data?

Andy

Testing is done Andy. If YOU have conflicting data to offer great.
This was not a thread to generate data for scatter graphs or any other goal but to establish the relationship of sensor output to actual measured AFR FROM THE TAILPIPE.
Bob

[whittlebeast]

Scatter plots has everything to do with your very goal.

Andy

[FLTRI]

Scatter plots has everything to do with your very goal.

Andy

I love it! Thanks for your input!
Bob

[mayor]

Scatter plots has everything to do with your very goal.

Let's not loose sight that Bob is not suggesting to use the o2 sensors for fuel control, only using the reported value at WOT to determine whether a bike is in a safe enough range to prevent damage due to being to rich or lean when street tuned.  In saying that, the only way the scatter plots can be effectively tied into the end goal is if you limit the data on the scatter plot to wide open/full MAP only and can correspond that data to a secondary afr collection device for simultaneous comparison.  Anything outside of that is outside of Bob's original hypothesis.  If you wish to use scatter plots to show the reported data is all over the place, you must first realize that we are limiting the focus to a small area on purpose and only that area should be reviewed based on Bob's original stated test.

[Hilly13]

Well put Mr Mayor, we are concentrating on one area under one condition for one reason.......its not rocket science........don't know why people keep twisting this up into something its not!
I hope it leads to a means to check wot afr is in a safe range for the diy home tuner.