[FSociety]

Originally Posted by Max Well

Engine sounds great, Rob. Have you noticed much difference in the acceleration and handling at the 5700 mile mark compared with delivery?

Big difference

Will show you soon the difference when the car sees some 3-5 gallons of Pure E85 is amazing.. Thanks to MyOmegaFuels.com

[Max Well]

Any new information to report, Rob? It appears this engine is a good fit for the X4's body, and I'm anxious to see how it translates to the G01 X3. I know you all are having fun with this one!

[FSociety]

Originally Posted by Max Well

Any new information to report, Rob? It appears this engine is a good fit for the X4's body, and I'm anxious to see how it translates to the G01 X3. I know you all are having fun with this one!

Yes I have a 12.8 slip from May 18th before the videos below
R/T... 194
60... 1.881
330... 5.277
1/8... 8.161
MPH... 84.32
1000... 10.693
E.T. ... 12.850
MPH... 104.07


Here's my last run against a 335 GT w/ ActiveAutowerke8
Weather was 80F and humid but i still beat a lighter car with better Aerodynamics run after run , going this friday will post slips on a slower track and videos

Any request?
I will be racing the following cars

M235 awd AT FBO Flash Tuned e85 blend
335 GT awd AT w/ DPs & Active8
335 6spd Rwd DPs JB4 e85 blend
335 awd AT RKTune Stg1 otherwise stock

I raced an E71 X6 50i (V8) a few weeks ago at the drag-strip about 2-3x and i had better ET twice by .1-.2 and one run we were the same.

[Max Well]

Those were some good runs, and it looks like those slips are the ones I graphed back on June 4th. Will be interested in seeing some new slips as well. Did you ever get a chance to run against Jamoka3? Wondering if there is a way for a digital stopwatch to be shown in a video as you make your run, like the NL video shared? It would be interesting to capture your vehicle's entire performance curve, which I can easily graph if simultaneous time and the instrument cluster are visible during the run, from start to finish. Because you will be running at a track which, by definition, should be relatively level, it would remove any potential grade issues which might have been present in the NL videos.

[FSociety]

Originally Posted by Max Well

Those were some good runs, and it looks like those slips are the ones I graphed back on June 4th. Will be interested in seeing some new slips as well. Did you ever get a chance to run against Jamoka3? Wondering if there is a way for a digital stopwatch to be shown in a video as you make your run, like the NL video shared? It would be interesting to capture your vehicle's entire performance curve, which I can easily graph if simultaneous time and the instrument cluster are visible during the run, from start to finish. Because you will be running at a track which, by definition, should be relatively level, it would remove any potential grade issues which might have been present in the NL videos.

I'm going today again with more cars to be tested against , I also have to show you some slips against the E71 X6 50i i ran against. jamoka3 is most likely coming today too

[Max Well]

I finally had a chance to analyze Rob's video from 5 Jul 2016. As the video did not have an imbedded digital stopwatch, I downloaded an online version, arranged it to half the screen, and Rob's video on the other half. Finally managed to get both to start at nearly the same time. There is a bit of parallax with the camera's viewing angle, and the video was a bit shaky at times, but I was able to capture at least a reasonable representation of time/mph for the 20 seconds. The sawtooth pattern is related to having to round up/down from 1/100ths sec to the closest 1/10th sec as that is how the sim is calculated, so if one smooths out the line you get the idea.

As with the NL video, road grade, wind direction and speed weren't included, but Rob if you remember the stretch of road this 20 sec encompasses, you can go to GoogleEarth and hover over the road to get a rough idea of the road elevations along that portion to get a feel for the degree of grade to see if that came into play at the upper end of the curve.

[FSociety]

Going to PM you some videos I've recorded

[Max Well]

Here is a photo of how one could set up data capture for a personal acceleration curve by using a simple digital timer which records to hundredth sec. These are readily available online for less than $20. A strip of blue painter's tape looped in a ring with the adhesive on the outside could attach to the dash as shown and would not leave any residue on the dash screen.

The best camera view is going to be one that is almost at chest height and straight on to the speedometer, tach, and timer. That will help to decrease the off-angle view which makes it difficult to really see the mph mark the speedometer indicator is over. If the video is made at night, I'm not sure if the timers illuminate enough to provide a good image, so if not, then some form of lighting would be needed.

It shouldn't be too difficult to push the start button of the timer exactly as the foot is let off the brake, and it doesn't matter when it is turned off, so that process should be straightforward.

With this it would seem to be a rather easy process to then develop personal acceleration curves from 0- X mph. But - and this is an important but - if the grade of the road is not level then all bets are off. Road grade is an important variable in the acceleration curves and plays a big role in either increasing or decreasing the acceleration performance.

Which is why the ideal would be at a drag strip where by definition most are designed with minimal grade differences along the track, or the salt flats (but who has access to that!) and where traffic is absent.

So it should be easy to find a timer for less than $20, attach it with painter's tape to the dash, and start the timer at brake release. What will take some practice and trial and error is arranging the camera at chest height centrally towards the dash with lighting and camera focus allowing enough detail to read the mph reasonably accurately at various timer points.