If one needed to know what the altitude is in his city, he can go to this site and input his city and get an altitude: http://geonames.usgs.gov/pls/gnispub...9739900::NO:::

Altitude is used/inputted in that ATP setting

 

Seems someone in Gilbert AZ has an interest.

 

Now how did you know that!

I set my Altitude to 1260 on the Rtek but my GPS says I'm 1200 and the gobment says I'm 1237. Close enough, huh.

 

*****Now how did you know that!***********8

'cause I'm a smartass!

Yep. Close enough for sure on the altitude.

You ever change that setting? Say to zero or maybe 3000ft???

I live at 650ft altitude and if I change the ATP to say 2000ft, it leans out the mixture. You can see it on a wideband at idle as you do it. Of course the engine idle changes with the altitude change. Even without a wideband to look at you can hear the engine tone change as you change the altitude (large change of altitude, not small changes) plus the rpms should also change a bit.

Bye.

EDIT: OH, ok, What I did was revisit this site quite a while after I wrote the thread. For kicks I clicked on the LINK just to see if it worked. Whoa! As soon as I linked up to the site it still had YOUR search still showing on the site with altitude and city.

By the way, I find that site a little odd to work with. I have to fiddle with it to make my search show up sometimes.

 

We messed with it on the way to SS9 in October.

If you were to take a trip like that, either put a switch in to switch back to the map sensor (as I remember) or your changing that slider every 300' or so. Ever try to change it while driving?
We were set at 1200 feet around Palm Springs then went up the mountain by all those wind mills. Soon I was at 2800 feet. Glen feel asleep and the engine started making little "pup pup" sounds. He woke up as soon as he heard that and corrected. We panicked and thought it was the dreaded detonation, but in hindsight, the higher altitude (thinner air) made for a rich engine and the sounds were probably plugs beginning to miss.

Hey, wouldn't a imbedded ATP/AFR Rtek switch be a good mod for the next release?

So yes, changing that slider is a fast AFR corrector. Good adjustment for emission testing.

Ya, when I tried that site I saw the last Query was from Texas.

 

I believe the next change/release does indeed have a slider that lets you set the altitude, AND, on the LOG screen it will have a listing of BAROMETER that will indicate what the altitude is in feet.

 

So instead of carrying the GPS for altitude, you can visually see what the altitude is and make changes.

Making those changes while driving using the slider is tricky. You can jump real fast and go rich/lean with a bump in the road. Maybe run the ATP adjustment through a tap scale or PDA buttons to adjust with more precision.

 

The next release will incorporate the VarRes as an aux input. Move the WB to the VarRes input and connect the ATP back up.

 

How does this sound? If you know what your idle mixture was when u started with the care idling and static couldn't you just move the slider to your original mixture?? I'm actually planning on having an altimeter with me. My uncle is a flight instructor so he has that kind of junk.

 

Great! No more adjustments on the fly and no need to carry a GPS/altimeter, although an altimeter gauge in the car would be a great conversation point.

turbo2lt, will we also have an altitude display?

 

This help?

 

Ya, but you must have the ATP un-checked as an input thus the altitude display, right.

The next release will allow us to run AFR inputs (Zeitronix) through the new linear input and connect my ATP back up for automatic altitude correction.

Now I read that there may be two 0-5V inputs in the next release, (as I recall). I can use the other one for EGT readings.

 

**********and connect the ATP back up*****************8

 

The update will have 2 inputs, the ATP being one of them. If you leave the ATP connected, then you only have one input (VarRes).