New Innovate logging hardware

[coombehouse]

Oh yes I get what you are saying however I would have problems remembering at what throttle position I was when looking at the logged data later. I still think a tps is preferable & hey if you buy an Ignitech programmable ignition you can have a 3d ignition curve. Don't quite know what benefit it would be but its something to play with!!
Nick

[posplayr]

Oh yes I get what you are saying however I would have problems remembering at what throttle position I was when looking at the logged data later. I still think a tps is preferable & hey if you buy an Ignitech programmable ignition you can have a 3d ignition curve. Don't quite know what benefit it would be but its something to play with!!
Nick

I measured RPM and Speed and set up a test sequence as shown below

1st gear 1/4 - 1/2 - 3/4- WOT
2nd gear 1/4 - 1/2 - 3/4 - WOT
3rd gear 1/4 - 1/2 - 3/4 - WOT
4th gear 1/4 - 1/2 -3/4 - WOT

I would pause about 15 seconds on each setting (or until the RPM stabilized) and close the throttle to shift up making that transition very clear. At WOT you run beyond red-line even on a steep hill.

If you remember that you are going to do 4 settings per gear and go through the sequence it is quite easy to see AFR and deduce what the throttle condition was.

I have a nice long steep (6% grade) hill close by, if you don't then a Dyno would be better.

[trippivot]

cool thread and links ... AFR and EGT tuning. now on my list of things to get .

[gearhead13]

I am wondering about how engine temp affects readings. If it is cold will the readings be richer or leaner than if it is fully warmed up
And oil temp is an indicator of engine temp, but I would imagine the oil could be cold and the actual aluminum head could be hot. Maybe a temp probe should be a sensor to add. Anyone know what kind of sensor would work well to measure head temp?
Going from a 140 to 130 main has raised my WOT A/F about 1.5-2.0. I am seeing 10.x from 5 krpm up to 7krpm then 12.x from 7-9.

[landspeedrich]

Cylinder Head Temp

I am wondering about how engine temp affects readings. If it is cold will the readings be richer or leaner than if it is fully warmed up
And oil temp is an indicator of engine temp, but I would imagine the oil could be cold and the actual aluminum head could be hot. Maybe a temp probe should be a sensor to add. Anyone know what kind of sensor would work well to measure head temp?
Going from a 140 to 130 main has raised my WOT A/F about 1.5-2.0. I am seeing 10.x from 5 krpm up to 7krpm then 12.x from 7-9.

In my old kart racing days.Running a single cyl. 2 stroke.We had a sensor that went between the sparkplug and head.Which is what we'd get a CHT from.On a 4 cyl im not sure what you could do.That combined with an EGT is what we'd use for setting the carb up on the track.We used Digitron gages for CHT,RPM,EGT and RPM.
Actually thinking about using Digitron with egt and rpm for my landspeedbike,combined with afr datalogging to help me get carbs set for a given air density reading. Rich