iPhone dyno
 

Pretty cool that it works.

wow i might actualy buy something like an iphone now. maybe i fully agree with the gtech assesment. I was nvr happy with mine.

Ok somebody needs to write some code that'll let you do this with a Wii remote. I would PAY for that.

how much does it bill to itunes?

umm youtube sucks, Streetfire owns

http://px2.sfstatic.com/handlers/Get...d=175854&w=120iPhone Dynolicious Software More Accurate than G-T

the program I believe he said was 13 bux.

But it'll charge your iTunes eleventybillion dollars!

oh word? didnt know that

Naww. That's just to scare people away from the iPhone version, and increase the demand for whomever may create the Wiimote version.

Crap, maybe I should think before I change my avatar next time. Just realized hustler already has a crustacean.

that vr6 sounds good.

So, I tried out this app last night, I tried fucking around with the configuration over 8 passes, twice the app got no data, once it started the run while I was still sitting at the tree, and it was 5-8 tenths off the slip.

Seems like a POS so far, but I am still going to try to get some measurements on rollout and such and plug them in, instead of guessing.

how does it measure speed? how does it know when you've reached the end of the 1/4 mile?

The g's are easy enough to understand, but the solidstate "gyros" in the phone can't produce data for calculating rate of travel, right? Isn't a distance value needed? GPS related?

If you integrate acceleration you get speed, if you integrate speed you get distance.

No GPS needed, just a super accurate accelerometer.

Does it have a 3-axis accelerometer? Or does it require you to place it flat, and thus suspension squat affects accuracy?

does it work on the ipod touch too?

Some guys on the forum I found it on said they wanted to download it on their touch. A trip to their website would tell you I bet.

I have a g-tech pro and that guy obviously had no idea how to use his. Also, bitching that you have to configure it for each car? Duh, how the hell would it know how to calibrate for differences in spark (that's how it knows the RPM) and weight to figure out HP. What a moron.

FWIW, I made a dyno out of a digital sound recorder and timing gun one time. Pretty easy to build and it made some nice HP/TQ curve graphs.