Android dyno

sd2649 · #1 10-27-2010, 05:27 PM

I am attempting to setup a dyno program on my evo 4g. I know they arent real reliable or accurate, but I wanted to see how the free dyno app did, and I could post you guys the charts when I'm done. Anyway, I need some help, there are a few pieces of data that the program needs that I just cannot find, please anyone with an idea or even a good guess, chime in!

Pitch characteristics - ? default is 2.00*/G (pitch angle in degrees @ 1 G acceleration)

Roll characteristics - ? default is 2.50*/G (roll angle in degrees @ 1 G cornering)

Weight - my 94 fwd should be 3375lbs according to the interwebs

Drive train losses - ? Whats typical for subies weird fwd trannies? default is 15%

Rolling resistance - ? Need to look at my tire manufacturer? Psi? Weight? default is 0.015%

Drag coefficient - 0.29 cd - interwebs

Frontal area - 0.557 m2 - interwebs

Alright... help!

sd2649 · #2 10-28-2010, 03:01 AM

Nobody????

1986nate · #3 10-28-2010, 04:45 AM

drivetrain loss on the awd auto is about 25-30%

sd2649 · #4 10-28-2010, 08:32 AM

Sooo... the fwd would be higher than 15%??

1986nate · #5 10-28-2010, 12:51 PM

Quote:

Originally Posted by sd2649

Sooo... the fwd would be higher than 15%??

Yes, the FWD still works very similar. I haven't seen any numbers, but it's still going to be 20-25% on a fwd auto on the SVX, more than likely closer to the 25%

sd2649 · #6 10-29-2010, 02:22 PM

Even with the rear diff, center viscous clutchplate for the awd hookup and all those drive shafts/cv axles missing, you think its still close to 25%..... no way, its gotta be a ton lower.

NikFu S. · #7 10-29-2010, 02:47 PM

Oh neat, I just downloaded the same app.

I would put 20% for the FWD auto, but I have no idea.

Johnybeas · #8 10-29-2010, 02:55 PM

look at edmunds etc. they typically have all the stats you need for it, I did the app and tried running it for my speed6 since my svx is still out of commission but i did it when that app first came out and was in beta, glitched like a mofo and never worked. last time i tried to calibrate it wouldn't let me... (garminfone)

sd2649 · #9 10-29-2010, 03:11 PM

Is it called adyno?

1986nate · #10 10-29-2010, 05:03 PM

Quote:

Originally Posted by sd2649

Even with the rear diff, center viscous clutchplate for the awd hookup and all those drive shafts/cv axles missing, you think its still close to 25%..... no way, its gotta be a ton lower.

The fwd still works in much the same way, input shaft goes to rear of transmission where it meets a reduction gear and has to get transferred all the way back up to the front differential. It's going to be in between 20 and 25%, definitely not lower than 20% since the AWD has been shown to be at around 28-30% on a true dyno...

Cam · #11 10-29-2010, 06:14 PM

I always thought that the parasitic drag from the driveline, rear diff, and rear axles would impact the drivetrain loss a lot more than just 5 percent. closer to 10...can anybody confirm actual numbers?

sd2649 · #12 10-29-2010, 08:51 PM

I cant, lol

Johnybeas · #13 10-31-2010, 08:12 PM

ya I had adyno, but my phone=suck right now I'm gonna have to go to tmobile and ***** tomorrow I can't even update any apps right now let alone download anything it's having a meltdown.... I'm going to beg for a free galaxy S wish me luck!

sd2649 · #14 12-25-2010, 09:49 PM

Any luck with that galaxy s? Anyone else messed with this app?

STeeL25T · #15 12-26-2010, 07:47 AM

I hear Dynolicious is a good one, but it isn't free, and I don't know if its for anything other than iPhone/iPod Touch.