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 Yamaha R1 + Nitrous .. Data Logs From Tuning Power Commande 
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Joined: Fri Feb 08, 2013 2:37 pm
Posts: 1744
This link http://www.innovatemotorsports.com/support.php is to Innovate Motorsports Support page. Download and install the LogWorks software. The link to it is at the top of the page.

Or click on it here http://www.innovatemotorsports.com/supp ... 3Setup.exe

You will then be able to use LogWorks to view Innovate data logs containing information which will illustrate the subject of discussion, such as tuning changes and their effect on AFR, in posts with an attached Innovate LogWorks log.



The attached Innovate LogWorks data logs are from a Yamaha R1 with nitrous in a Banshee. The sessions were recorded tuning the Power Commander and then spraying it after the tune-up was safe. Sessions 3, 5, and 6 are nitrous passes. The logs include the burnout, staging, the pass and the return road.

The AFR spikes in these logs are from the Power Commander staging rev limiter and the spikes at the shifts are from “Quick Shifter” feature which allows clutchless shifting by controlling a momentary fuel cutoff when the shift lever is activated.

This data was recorded using a DL-32 powered by a 9V battery and an LC-1 powered by the Yamaha’s electrical system. The WBO2 sensor was about midway between the collector and the muffler. The Throttle % was the 0 to 5 V signal from the Yamaha TPS. The RPM was obtained from an injector power lead with an Induction Clamp. The accelerometer is internal in the DL-32.

The launches are erratic because the rider was new at it at the time and the machine was geared way too high, crossing the ¼ at 115 MPH and only 10,000 RPM in 5th (R1 has 6).

The link to the data log attachment is below the screenshot of the LogWorks graph. “R-1 Yamaha.log”


Attachments:
Yamaha R-1-1 log.jpg
Yamaha R-1-1 log.jpg [ 105.5 KiB | Viewed 845 times ]
R-1 Yamaha.log [1.23 MiB]
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Tue Feb 12, 2013 5:33 pm
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Joined: Fri Mar 01, 2013 3:32 am
Posts: 10
Eratic has a new meaning!! wow!


Fri Mar 29, 2013 1:33 am
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Site Admin

Joined: Fri Feb 08, 2013 2:37 pm
Posts: 1744
The AFR trace is accurately displaying the O2 sensor’s response to the staging rev-limiter and the shifts. The AFR spikes are from the Power Commander staging rev limiter and the spikes at the shifts are from “Quick Shifter” feature which allows clutchless shifting by causing a momentary fuel cutoff when the shift lever is activated.

What are you calling erratic? I was referring to the launch action shown in the accelerometer data.

You should have seen the Banshee doing aborted wheelies, first on one wheel then the other. It was geared too high so the initial launch off the staging rev-limiter was occasionally impressive if the clutch was slipped just exactly right, which wasn’t quite possible due to several reasons, mostly the rider’s inexperience, which he tried desperately to compensate for with bravado.

To appreciate the experience a little better, open the log

download/file.php?id=15

in LogWorks and on the Graph Screen use the Select Tool to highlight from about two seconds before staging to a few seconds after the pass and click on File, then Playback.

On the Playback Dashboard, select Gauges and “Add new gauge” and using LONGG and LATG make a new gauge using the Circular Graph gauge. Expand the gauge to nearly fill the screen by clicking on it and dragging a corner to stretch it larger.

When you hit the playback button it will display a red arrow describing the acceleration forces and show just how erratic it must have been to ride the thing. You can click the button that makes it loop the playback and it will repeat from the beginning of the selected area.

Too bad there wasn’t a vertical accelerometer because there was plenty of that going on. You’ll see varying degrees of erraticism on various axes in the different sessions. LOL


Fri Mar 29, 2013 12:13 pm
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